[2.0.x] HAL for STM32F4 (#10434)

Marlin/src/HAL/HAL_STM32F4/EEPROM_Emul/eeprom_emul.cpp

@@ -0,0 +1,571 @@
+/**
+  ******************************************************************************
+  * @file    EEPROM/EEPROM_Emulation/src/eeprom.c
+  * @author  MCD Application Team
+  * @version V1.2.6
+  * @date    04-November-2016
+  * @brief   This file provides all the EEPROM emulation firmware functions.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright © 2016 STMicroelectronics International N.V.
+  * All rights reserved.</center></h2>
+  *
+  * Redistribution and use in source and binary forms, with or without
+  * modification, are permitted, provided that the following conditions are met:
+  *
+  * 1. Redistribution of source code must retain the above copyright notice,
+  *    this list of conditions and the following disclaimer.
+  * 2. Redistributions in binary form must reproduce the above copyright notice,
+  *    this list of conditions and the following disclaimer in the documentation
+  *    and/or other materials provided with the distribution.
+  * 3. Neither the name of STMicroelectronics nor the names of other
+  *    contributors to this software may be used to endorse or promote products
+  *    derived from this software without specific written permission.
+  * 4. This software, including modifications and/or derivative works of this
+  *    software, must execute solely and exclusively on microcontroller or
+  *    microprocessor devices manufactured by or for STMicroelectronics.
+  * 5. Redistribution and use of this software other than as permitted under
+  *    this license is void and will automatically terminate your rights under
+  *    this license.
+  *
+  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT
+  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
+  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT
+  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */
+/** @addtogroup EEPROM_Emulation
+  * @{
+  */
+#ifdef STM32F4
+
+/* Includes ------------------------------------------------------------------*/
+#include "eeprom_emul.h"
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+
+/* Global variable used to store variable value in read sequence */
+uint16_t DataVar = 0;
+
+/* Virtual address defined by the user: 0xFFFF value is prohibited */
+uint16_t VirtAddVarTab[NB_OF_VAR];
+
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+static HAL_StatusTypeDef EE_Format(void);
+static uint16_t EE_FindValidPage(uint8_t Operation);
+static uint16_t EE_VerifyPageFullWriteVariable(uint16_t VirtAddress, uint16_t Data);
+static uint16_t EE_PageTransfer(uint16_t VirtAddress, uint16_t Data);
+static uint16_t EE_VerifyPageFullyErased(uint32_t Address);
+
+/**
+  * @brief  Restore the pages to a known good state in case of page's status
+  *   corruption after a power loss.
+  * @param  None.
+  * @retval - Flash error code: on write Flash error
+  *         - FLASH_COMPLETE: on success
+  */
+uint16_t EE_Initialise(void) {
+  uint16_t PageStatus0 = 6, PageStatus1 = 6;
+  uint16_t VarIdx = 0;
+  uint16_t EepromStatus = 0, ReadStatus = 0;
+  int16_t x = -1;
+  HAL_StatusTypeDef  FlashStatus;
+  uint32_t SectorError = 0;
+  FLASH_EraseInitTypeDef pEraseInit;
+
+
+  /* Get Page0 status */
+  PageStatus0 = (*(__IO uint16_t*)PAGE0_BASE_ADDRESS);
+  /* Get Page1 status */
+  PageStatus1 = (*(__IO uint16_t*)PAGE1_BASE_ADDRESS);
+
+  pEraseInit.TypeErase = TYPEERASE_SECTORS;
+  pEraseInit.Sector = PAGE0_ID;
+  pEraseInit.NbSectors = 1;
+  pEraseInit.VoltageRange = VOLTAGE_RANGE;
+
+  /* Check for invalid header states and repair if necessary */
+  switch (PageStatus0) {
+    case ERASED:
+      if (PageStatus1 == VALID_PAGE) { /* Page0 erased, Page1 valid */
+          /* Erase Page0 */
+        if(!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS)) {
+          FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
+          /* If erase operation was failed, a Flash error code is returned */
+          if (FlashStatus != HAL_OK) {
+            return FlashStatus;
+          }
+        }
+      }
+      else if (PageStatus1 == RECEIVE_DATA) { /* Page0 erased, Page1 receive */
+        /* Erase Page0 */
+        if (!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS)) {
+          FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
+          /* If erase operation was failed, a Flash error code is returned */
+          if (FlashStatus != HAL_OK) return FlashStatus;
+        }
+        /* Mark Page1 as valid */
+        FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, PAGE1_BASE_ADDRESS, VALID_PAGE);
+        /* If program operation was failed, a Flash error code is returned */
+        if (FlashStatus != HAL_OK) return FlashStatus;
+      }
+      else { /* First EEPROM access (Page0&1 are erased) or invalid state -> format EEPROM */
+        /* Erase both Page0 and Page1 and set Page0 as valid page */
+        FlashStatus = EE_Format();
+        /* If erase/program operation was failed, a Flash error code is returned */
+        if (FlashStatus != HAL_OK) return FlashStatus;
+      }
+      break;
+
+    case RECEIVE_DATA:
+      if (PageStatus1 == VALID_PAGE) { /* Page0 receive, Page1 valid */
+        /* Transfer data from Page1 to Page0 */
+        for (VarIdx = 0; VarIdx < NB_OF_VAR; VarIdx++) {
+          if (( *(__IO uint16_t*)(PAGE0_BASE_ADDRESS + 6)) == VirtAddVarTab[VarIdx])
+            x = VarIdx;
+          if (VarIdx != x) {
+            /* Read the last variables' updates */
+            ReadStatus = EE_ReadVariable(VirtAddVarTab[VarIdx], &DataVar);
+            /* In case variable corresponding to the virtual address was found */
+            if (ReadStatus != 0x1) {
+              /* Transfer the variable to the Page0 */
+              EepromStatus = EE_VerifyPageFullWriteVariable(VirtAddVarTab[VarIdx], DataVar);
+              /* If program operation was failed, a Flash error code is returned */
+              if (EepromStatus != HAL_OK) return EepromStatus;
+            }
+          }
+        }
+        /* Mark Page0 as valid */
+        FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, PAGE0_BASE_ADDRESS, VALID_PAGE);
+        /* If program operation was failed, a Flash error code is returned */
+        if (FlashStatus != HAL_OK) return FlashStatus;
+        pEraseInit.Sector = PAGE1_ID;
+        pEraseInit.NbSectors = 1;
+        pEraseInit.VoltageRange = VOLTAGE_RANGE;
+        /* Erase Page1 */
+        if (!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS)) {
+          FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
+          /* If erase operation was failed, a Flash error code is returned */
+          if (FlashStatus != HAL_OK) return FlashStatus;
+        }
+      }
+      else if (PageStatus1 == ERASED) { /* Page0 receive, Page1 erased */
+        pEraseInit.Sector = PAGE1_ID;
+        pEraseInit.NbSectors = 1;
+        pEraseInit.VoltageRange = VOLTAGE_RANGE;
+        /* Erase Page1 */
+        if (!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS)) {
+          FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
+          /* If erase operation was failed, a Flash error code is returned */
+          if (FlashStatus != HAL_OK) return FlashStatus;
+        }
+        /* Mark Page0 as valid */
+        FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, PAGE0_BASE_ADDRESS, VALID_PAGE);
+        /* If program operation was failed, a Flash error code is returned */
+        if (FlashStatus != HAL_OK) return FlashStatus;
+      }
+      else { /* Invalid state -> format eeprom */
+        /* Erase both Page0 and Page1 and set Page0 as valid page */
+        FlashStatus = EE_Format();
+        /* If erase/program operation was failed, a Flash error code is returned */
+        if (FlashStatus != HAL_OK) return FlashStatus;
+      }
+      break;
+
+    case VALID_PAGE:
+      if (PageStatus1 == VALID_PAGE) { /* Invalid state -> format eeprom */
+        /* Erase both Page0 and Page1 and set Page0 as valid page */
+        FlashStatus = EE_Format();
+        /* If erase/program operation was failed, a Flash error code is returned */
+        if (FlashStatus != HAL_OK) return FlashStatus;
+      }
+      else if (PageStatus1 == ERASED) { /* Page0 valid, Page1 erased */
+        pEraseInit.Sector = PAGE1_ID;
+        pEraseInit.NbSectors = 1;
+        pEraseInit.VoltageRange = VOLTAGE_RANGE;
+        /* Erase Page1 */
+        if (!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS)) {
+          FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
+          /* If erase operation was failed, a Flash error code is returned */
+          if (FlashStatus != HAL_OK) return FlashStatus;
+        }
+      }
+      else { /* Page0 valid, Page1 receive */
+        /* Transfer data from Page0 to Page1 */
+        for (VarIdx = 0; VarIdx < NB_OF_VAR; VarIdx++) {
+          if ((*(__IO uint16_t*)(PAGE1_BASE_ADDRESS + 6)) == VirtAddVarTab[VarIdx])
+            x = VarIdx;
+
+          if (VarIdx != x) {
+            /* Read the last variables' updates */
+            ReadStatus = EE_ReadVariable(VirtAddVarTab[VarIdx], &DataVar);
+            /* In case variable corresponding to the virtual address was found */
+            if (ReadStatus != 0x1) {
+              /* Transfer the variable to the Page1 */
+              EepromStatus = EE_VerifyPageFullWriteVariable(VirtAddVarTab[VarIdx], DataVar);
+              /* If program operation was failed, a Flash error code is returned */
+              if (EepromStatus != HAL_OK) return EepromStatus;
+            }
+          }
+        }
+        /* Mark Page1 as valid */
+        FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, PAGE1_BASE_ADDRESS, VALID_PAGE);
+        /* If program operation was failed, a Flash error code is returned */
+        if (FlashStatus != HAL_OK) return FlashStatus;
+        pEraseInit.Sector = PAGE0_ID;
+        pEraseInit.NbSectors = 1;
+        pEraseInit.VoltageRange = VOLTAGE_RANGE;
+        /* Erase Page0 */
+        if (!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS)) {
+          FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
+          /* If erase operation was failed, a Flash error code is returned */
+          if (FlashStatus != HAL_OK) return FlashStatus;
+        }
+      }
+      break;
+
+    default:  /* Any other state -> format eeprom */
+      /* Erase both Page0 and Page1 and set Page0 as valid page */
+      FlashStatus = EE_Format();
+      /* If erase/program operation was failed, a Flash error code is returned */
+      if (FlashStatus != HAL_OK) return FlashStatus;
+      break;
+  }
+
+  return HAL_OK;
+}
+
+/**
+ * @brief  Verify if specified page is fully erased.
+ * @param  Address: page address
+ *   This parameter can be one of the following values:
+ *     @arg PAGE0_BASE_ADDRESS: Page0 base address
+ *     @arg PAGE1_BASE_ADDRESS: Page1 base address
+ * @retval page fully erased status:
+ *           - 0: if Page not erased
+ *           - 1: if Page erased
+ */
+uint16_t EE_VerifyPageFullyErased(uint32_t Address) {
+  uint32_t ReadStatus = 1;
+  uint16_t AddressValue = 0x5555;
+  /* Check each active page address starting from end */
+  while (Address <= PAGE0_END_ADDRESS) {
+    /* Get the current location content to be compared with virtual address */
+    AddressValue = (*(__IO uint16_t*)Address);
+    /* Compare the read address with the virtual address */
+    if (AddressValue != ERASED) {
+      /* In case variable value is read, reset ReadStatus flag */
+      ReadStatus = 0;
+      break;
+    }
+    /* Next address location */
+    Address += 4;
+  }
+  /* Return ReadStatus value: (0: Page not erased, 1: Sector erased) */
+  return ReadStatus;
+}
+
+/**
+ * @brief  Returns the last stored variable data, if found, which correspond to
+ *   the passed virtual address
+ * @param  VirtAddress: Variable virtual address
+ * @param  Data: Global variable contains the read variable value
+ * @retval Success or error status:
+ *           - 0: if variable was found
+ *           - 1: if the variable was not found
+ *           - NO_VALID_PAGE: if no valid page was found.
+ */
+uint16_t EE_ReadVariable(uint16_t VirtAddress, uint16_t* Data) {
+  uint16_t ValidPage = PAGE0;
+  uint16_t AddressValue = 0x5555, ReadStatus = 1;
+  uint32_t Address = EEPROM_START_ADDRESS, PageStartAddress = EEPROM_START_ADDRESS;
+
+  /* Get active Page for read operation */
+  ValidPage = EE_FindValidPage(READ_FROM_VALID_PAGE);
+
+  /* Check if there is no valid page */
+  if (ValidPage == NO_VALID_PAGE) return NO_VALID_PAGE;
+
+  /* Get the valid Page start Address */
+  PageStartAddress = (uint32_t)(EEPROM_START_ADDRESS + (uint32_t)(ValidPage * PAGE_SIZE));
+
+  /* Get the valid Page end Address */
+  Address = (uint32_t)((EEPROM_START_ADDRESS - 2) + (uint32_t)((1 + ValidPage) * PAGE_SIZE));
+
+  /* Check each active page address starting from end */
+  while (Address > (PageStartAddress + 2)) {
+    /* Get the current location content to be compared with virtual address */
+    AddressValue = (*(__IO uint16_t*)Address);
+
+    /* Compare the read address with the virtual address */
+    if (AddressValue == VirtAddress) {
+      /* Get content of Address-2 which is variable value */
+      *Data = (*(__IO uint16_t*)(Address - 2));
+      /* In case variable value is read, reset ReadStatus flag */
+      ReadStatus = 0;
+      break;
+    }
+    else /* Next address location */
+      Address -= 4;
+  }
+  /* Return ReadStatus value: (0: variable exist, 1: variable doesn't exist) */
+  return ReadStatus;
+}
+
+/**
+ * @brief  Writes/upadtes variable data in EEPROM.
+ * @param  VirtAddress: Variable virtual address
+ * @param  Data: 16 bit data to be written
+ * @retval Success or error status:
+ *           - FLASH_COMPLETE: on success
+ *           - PAGE_FULL: if valid page is full
+ *           - NO_VALID_PAGE: if no valid page was found
+ *           - Flash error code: on write Flash error
+ */
+uint16_t EE_WriteVariable(uint16_t VirtAddress, uint16_t Data) {
+  /* Write the variable virtual address and value in the EEPROM */
+  uint16_t Status = EE_VerifyPageFullWriteVariable(VirtAddress, Data);
+
+  /* In case the EEPROM active page is full */
+  if (Status == PAGE_FULL) /* Perform Page transfer */
+    Status = EE_PageTransfer(VirtAddress, Data);
+
+  /* Return last operation status */
+  return Status;
+}
+
+/**
+ * @brief  Erases PAGE and PAGE1 and writes VALID_PAGE header to PAGE
+ * @param  None
+ * @retval Status of the last operation (Flash write or erase) done during
+ *         EEPROM formating
+ */
+static HAL_StatusTypeDef EE_Format(void) {
+  HAL_StatusTypeDef FlashStatus = HAL_OK;
+  uint32_t SectorError = 0;
+  FLASH_EraseInitTypeDef pEraseInit;
+
+  pEraseInit.TypeErase = FLASH_TYPEERASE_SECTORS;
+  pEraseInit.Sector = PAGE0_ID;
+  pEraseInit.NbSectors = 1;
+  pEraseInit.VoltageRange = VOLTAGE_RANGE;
+  /* Erase Page0 */
+  if (!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS)) {
+    FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
+    /* If erase operation was failed, a Flash error code is returned */
+    if (FlashStatus != HAL_OK) return FlashStatus;
+  }
+  /* Set Page0 as valid page: Write VALID_PAGE at Page0 base address */
+  FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, PAGE0_BASE_ADDRESS, VALID_PAGE);
+  /* If program operation was failed, a Flash error code is returned */
+  if (FlashStatus != HAL_OK) return FlashStatus;
+
+  pEraseInit.Sector = PAGE1_ID;
+  /* Erase Page1 */
+  if (!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS)) {
+    FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
+    /* If erase operation was failed, a Flash error code is returned */
+    if (FlashStatus != HAL_OK) return FlashStatus;
+  }
+
+  return HAL_OK;
+}
+
+/**
+ * @brief  Find valid Page for write or read operation
+ * @param  Operation: operation to achieve on the valid page.
+ *   This parameter can be one of the following values:
+ *     @arg READ_FROM_VALID_PAGE: read operation from valid page
+ *     @arg WRITE_IN_VALID_PAGE: write operation from valid page
+ * @retval Valid page number (PAGE or PAGE1) or NO_VALID_PAGE in case
+ *   of no valid page was found
+ */
+static uint16_t EE_FindValidPage(uint8_t Operation) {
+  uint16_t PageStatus0 = 6, PageStatus1 = 6;
+
+  /* Get Page0 actual status */
+  PageStatus0 = (*(__IO uint16_t*)PAGE0_BASE_ADDRESS);
+
+  /* Get Page1 actual status */
+  PageStatus1 = (*(__IO uint16_t*)PAGE1_BASE_ADDRESS);
+
+  /* Write or read operation */
+  switch (Operation) {
+    case WRITE_IN_VALID_PAGE:   /* ---- Write operation ---- */
+      if (PageStatus1 == VALID_PAGE) {
+        /* Page0 receiving data */
+        if (PageStatus0 == RECEIVE_DATA) return PAGE0;         /* Page0 valid */
+        else                             return PAGE1;         /* Page1 valid */
+      }
+      else if (PageStatus0 == VALID_PAGE) {
+        /* Page1 receiving data */
+        if (PageStatus1 == RECEIVE_DATA) return PAGE1;         /* Page1 valid */
+        else                             return PAGE0;         /* Page0 valid */
+      }
+      else
+        return NO_VALID_PAGE;   /* No valid Page */
+
+    case READ_FROM_VALID_PAGE:  /* ---- Read operation ---- */
+      if (PageStatus0 == VALID_PAGE)
+        return PAGE0;           /* Page0 valid */
+      else if (PageStatus1 == VALID_PAGE)
+        return PAGE1;           /* Page1 valid */
+      else
+        return NO_VALID_PAGE;   /* No valid Page */
+
+    default:
+      return PAGE0;             /* Page0 valid */
+  }
+}
+
+/**
+ * @brief  Verify if active page is full and Writes variable in EEPROM.
+ * @param  VirtAddress: 16 bit virtual address of the variable
+ * @param  Data: 16 bit data to be written as variable value
+ * @retval Success or error status:
+ *           - FLASH_COMPLETE: on success
+ *           - PAGE_FULL: if valid page is full
+ *           - NO_VALID_PAGE: if no valid page was found
+ *           - Flash error code: on write Flash error
+ */
+static uint16_t EE_VerifyPageFullWriteVariable(uint16_t VirtAddress, uint16_t Data) {
+  HAL_StatusTypeDef FlashStatus = HAL_OK;
+  uint16_t ValidPage = PAGE0;
+  uint32_t Address = EEPROM_START_ADDRESS, PageEndAddress = EEPROM_START_ADDRESS+PAGE_SIZE;
+
+  /* Get valid Page for write operation */
+  ValidPage = EE_FindValidPage(WRITE_IN_VALID_PAGE);
+
+  /* Check if there is no valid page */
+  if (ValidPage == NO_VALID_PAGE) return NO_VALID_PAGE;
+
+  /* Get the valid Page start Address */
+  Address = (uint32_t)(EEPROM_START_ADDRESS + (uint32_t)(ValidPage * PAGE_SIZE));
+
+  /* Get the valid Page end Address */
+  PageEndAddress = (uint32_t)((EEPROM_START_ADDRESS - 1) + (uint32_t)((ValidPage + 1) * PAGE_SIZE));
+
+  /* Check each active page address starting from begining */
+  while (Address < PageEndAddress) {
+    /* Verify if Address and Address+2 contents are 0xFFFFFFFF */
+    if ((*(__IO uint32_t*)Address) == 0xFFFFFFFF) {
+      /* Set variable data */
+      FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, Address, Data);
+      /* If program operation was failed, a Flash error code is returned */
+      if (FlashStatus != HAL_OK) return FlashStatus;
+      /* Set variable virtual address */
+      FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, Address + 2, VirtAddress);
+      /* Return program operation status */
+      return FlashStatus;
+    }
+    else /* Next address location */
+      Address += 4;
+  }
+
+  /* Return PAGE_FULL in case the valid page is full */
+  return PAGE_FULL;
+}
+
+/**
+ * @brief  Transfers last updated variables data from the full Page to
+ *   an empty one.
+ * @param  VirtAddress: 16 bit virtual address of the variable
+ * @param  Data: 16 bit data to be written as variable value
+ * @retval Success or error status:
+ *           - FLASH_COMPLETE: on success
+ *           - PAGE_FULL: if valid page is full
+ *           - NO_VALID_PAGE: if no valid page was found
+ *           - Flash error code: on write Flash error
+ */
+static uint16_t EE_PageTransfer(uint16_t VirtAddress, uint16_t Data) {
+  HAL_StatusTypeDef FlashStatus = HAL_OK;
+  uint32_t NewPageAddress = EEPROM_START_ADDRESS;
+  uint16_t OldPageId=0;
+  uint16_t ValidPage = PAGE0, VarIdx = 0;
+  uint16_t EepromStatus = 0, ReadStatus = 0;
+  uint32_t SectorError = 0;
+  FLASH_EraseInitTypeDef pEraseInit;
+
+  /* Get active Page for read operation */
+  ValidPage = EE_FindValidPage(READ_FROM_VALID_PAGE);
+
+  if (ValidPage == PAGE1) {     /* Page1 valid */
+    /* New page address where variable will be moved to */
+    NewPageAddress = PAGE0_BASE_ADDRESS;
+    /* Old page ID where variable will be taken from */
+    OldPageId = PAGE1_ID;
+  }
+  else if (ValidPage == PAGE0) { /* Page0 valid */
+    /* New page address  where variable will be moved to */
+    NewPageAddress = PAGE1_BASE_ADDRESS;
+    /* Old page ID where variable will be taken from */
+    OldPageId = PAGE0_ID;
+  }
+  else
+    return NO_VALID_PAGE;       /* No valid Page */
+
+  /* Set the new Page status to RECEIVE_DATA status */
+  FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, NewPageAddress, RECEIVE_DATA);
+  /* If program operation was failed, a Flash error code is returned */
+  if (FlashStatus != HAL_OK) return FlashStatus;
+
+  /* Write the variable passed as parameter in the new active page */
+  EepromStatus = EE_VerifyPageFullWriteVariable(VirtAddress, Data);
+  /* If program operation was failed, a Flash error code is returned */
+  if (EepromStatus != HAL_OK) return EepromStatus;
+
+  /* Transfer process: transfer variables from old to the new active page */
+  for (VarIdx = 0; VarIdx < NB_OF_VAR; VarIdx++) {
+    if (VirtAddVarTab[VarIdx] != VirtAddress) { /* Check each variable except the one passed as parameter */
+      /* Read the other last variable updates */
+      ReadStatus = EE_ReadVariable(VirtAddVarTab[VarIdx], &DataVar);
+      /* In case variable corresponding to the virtual address was found */
+      if (ReadStatus != 0x1) {
+        /* Transfer the variable to the new active page */
+        EepromStatus = EE_VerifyPageFullWriteVariable(VirtAddVarTab[VarIdx], DataVar);
+        /* If program operation was failed, a Flash error code is returned */
+        if (EepromStatus != HAL_OK) return EepromStatus;
+      }
+    }
+  }
+
+  pEraseInit.TypeErase = TYPEERASE_SECTORS;
+  pEraseInit.Sector = OldPageId;
+  pEraseInit.NbSectors = 1;
+  pEraseInit.VoltageRange = VOLTAGE_RANGE;
+
+  /* Erase the old Page: Set old Page status to ERASED status */
+  FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
+  /* If erase operation was failed, a Flash error code is returned */
+  if (FlashStatus != HAL_OK) return FlashStatus;
+
+  /* Set new Page status to VALID_PAGE status */
+  FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, NewPageAddress, VALID_PAGE);
+  /* If program operation was failed, a Flash error code is returned */
+  if (FlashStatus != HAL_OK) return FlashStatus;
+
+  /* Return last operation flash status */
+  return FlashStatus;
+}
+
+#endif // STM32F4
+
+/**
+ * @}
+ */
+
+/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/

Marlin/src/HAL/HAL_STM32F4/EEPROM_Emul/eeprom_emul.h

@@ -0,0 +1,117 @@
+/**
+  ******************************************************************************
+  * @file    EEPROM/EEPROM_Emulation/inc/eeprom.h
+  * @author  MCD Application Team
+  * @version V1.2.6
+  * @date    04-November-2016
+  * @brief   This file contains all the functions prototypes for the EEPROM
+  *          emulation firmware library.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright � 2016 STMicroelectronics International N.V.
+  * All rights reserved.</center></h2>
+  *
+  * Redistribution and use in source and binary forms, with or without
+  * modification, are permitted, provided that the following conditions are met:
+  *
+  * 1. Redistribution of source code must retain the above copyright notice,
+  *    this list of conditions and the following disclaimer.
+  * 2. Redistributions in binary form must reproduce the above copyright notice,
+  *    this list of conditions and the following disclaimer in the documentation
+  *    and/or other materials provided with the distribution.
+  * 3. Neither the name of STMicroelectronics nor the names of other
+  *    contributors to this software may be used to endorse or promote products
+  *    derived from this software without specific written permission.
+  * 4. This software, including modifications and/or derivative works of this
+  *    software, must execute solely and exclusively on microcontroller or
+  *    microprocessor devices manufactured by or for STMicroelectronics.
+  * 5. Redistribution and use of this software other than as permitted under
+  *    this license is void and will automatically terminate your rights under
+  *    this license.
+  *
+  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT
+  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
+  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT
+  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __EEEPROM_EMUL_H
+#define __EEEPROM_EMUL_H
+
+// --------------------------------------------------------------------------
+// Includes
+// --------------------------------------------------------------------------
+#include "../../../inc/MarlinConfig.h"
+#include "../HAL.h"
+
+/* Exported constants --------------------------------------------------------*/
+/* EEPROM emulation firmware error codes */
+#define EE_OK      (uint32_t)HAL_OK
+#define EE_ERROR   (uint32_t)HAL_ERROR
+#define EE_BUSY    (uint32_t)HAL_BUSY
+#define EE_TIMEOUT (uint32_t)HAL_TIMEOUT
+
+/* Define the size of the sectors to be used */
+#define PAGE_SIZE               (uint32_t)0x4000  /* Page size = 16KByte */
+
+/* Device voltage range supposed to be [2.7V to 3.6V], the operation will
+   be done by word  */
+#define VOLTAGE_RANGE           (uint8_t)VOLTAGE_RANGE_3
+
+/* EEPROM start address in Flash */
+#define EEPROM_START_ADDRESS  ((uint32_t)0x08078000) /* EEPROM emulation start address:
+                                                  after 480KByte of used Flash memory */
+
+/* Pages 0 and 1 base and end addresses */
+#define PAGE0_BASE_ADDRESS    ((uint32_t)(EEPROM_START_ADDRESS + 0x0000))
+#define PAGE0_END_ADDRESS     ((uint32_t)(EEPROM_START_ADDRESS + (PAGE_SIZE - 1)))
+#define PAGE0_ID               FLASH_SECTOR_1
+
+#define PAGE1_BASE_ADDRESS    ((uint32_t)(EEPROM_START_ADDRESS + 0x4000))
+#define PAGE1_END_ADDRESS     ((uint32_t)(EEPROM_START_ADDRESS + (2 * PAGE_SIZE - 1)))
+#define PAGE1_ID               FLASH_SECTOR_2
+
+/* Used Flash pages for EEPROM emulation */
+#define PAGE0                 ((uint16_t)0x0000)
+#define PAGE1                 ((uint16_t)0x0001) /* Page nb between PAGE0_BASE_ADDRESS & PAGE1_BASE_ADDRESS*/
+
+/* No valid page define */
+#define NO_VALID_PAGE         ((uint16_t)0x00AB)
+
+/* Page status definitions */
+#define ERASED                ((uint16_t)0xFFFF)     /* Page is empty */
+#define RECEIVE_DATA          ((uint16_t)0xEEEE)     /* Page is marked to receive data */
+#define VALID_PAGE            ((uint16_t)0x0000)     /* Page containing valid data */
+
+/* Valid pages in read and write defines */
+#define READ_FROM_VALID_PAGE  ((uint8_t)0x00)
+#define WRITE_IN_VALID_PAGE   ((uint8_t)0x01)
+
+/* Page full define */
+#define PAGE_FULL             ((uint8_t)0x80)
+
+/* Variables' number */
+#define NB_OF_VAR             ((uint16_t)4096)
+
+/* Exported types ------------------------------------------------------------*/
+/* Exported macro ------------------------------------------------------------*/
+/* Exported functions ------------------------------------------------------- */
+uint16_t EE_Initialise(void);
+uint16_t EE_ReadVariable(uint16_t VirtAddress, uint16_t* Data);
+uint16_t EE_WriteVariable(uint16_t VirtAddress, uint16_t Data);
+
+#endif /* __EEEPROM_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

Marlin/src/HAL/HAL_STM32F4/EmulatedEeprom.cpp

@@ -0,0 +1,143 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifdef STM32F4
+
+/**
+ * Description: functions for I2C connected external EEPROM.
+ * Not platform dependent.
+ */
+
+#include "../../inc/MarlinConfig.h"
+
+#if ENABLED(EEPROM_SETTINGS) && DISABLED(I2C_EEPROM) && DISABLED(SPI_EEPROM)
+
+// --------------------------------------------------------------------------
+// Includes
+// --------------------------------------------------------------------------
+
+#include "HAL.h"
+#include "EEPROM_Emul/eeprom_emul.h"
+
+
+// --------------------------------------------------------------------------
+// Externals
+// --------------------------------------------------------------------------
+
+// --------------------------------------------------------------------------
+// Local defines
+// --------------------------------------------------------------------------
+
+// --------------------------------------------------------------------------
+// Types
+// --------------------------------------------------------------------------
+
+// --------------------------------------------------------------------------
+// Variables
+// --------------------------------------------------------------------------
+
+// --------------------------------------------------------------------------
+// Public Variables
+// --------------------------------------------------------------------------
+
+// --------------------------------------------------------------------------
+// Private Variables
+// --------------------------------------------------------------------------
+static bool eeprom_initialised = false;
+// --------------------------------------------------------------------------
+// Function prototypes
+// --------------------------------------------------------------------------
+
+// --------------------------------------------------------------------------
+// Private functions
+// --------------------------------------------------------------------------
+
+// --------------------------------------------------------------------------
+// Public functions
+// --------------------------------------------------------------------------
+
+// FLASH_FLAG_PGSERR (Programming Sequence Error) was renamed to
+// FLASH_FLAG_ERSERR (Erasing Sequence Error) in STM32F4
+// #define FLASH_FLAG_PGSERR FLASH_FLAG_ERSERR
+
+// --------------------------------------------------------------------------
+// EEPROM
+// --------------------------------------------------------------------------
+
+
+void eeprom_init() {
+  if (!eeprom_initialised) {
+    HAL_FLASH_Unlock();
+
+    __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR |FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR | FLASH_FLAG_PGSERR);
+
+    /* EEPROM Init */
+    if (EE_Initialise() != EE_OK)
+      for (;;) HAL_Delay(1); // Spin forever until watchdog reset
+
+    HAL_FLASH_Lock();
+    eeprom_initialised = true;
+  }
+}
+
+void eeprom_write_byte(unsigned char *pos, unsigned char value) {
+  uint16_t eeprom_address = (unsigned) pos;
+
+  eeprom_init();
+
+  HAL_FLASH_Unlock();
+  __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR |FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR | FLASH_FLAG_PGSERR);
+
+  if (EE_WriteVariable(eeprom_address, (uint16_t) value) != EE_OK)
+      for (;;) HAL_Delay(1); // Spin forever until watchdog reset
+
+  HAL_FLASH_Lock();
+}
+
+unsigned char eeprom_read_byte(unsigned char *pos) {
+  uint16_t data = 0xFF;
+  uint16_t eeprom_address = (unsigned)pos;
+
+  eeprom_init();
+
+  if (EE_ReadVariable(eeprom_address, &data) != EE_OK) {
+    return (unsigned char)data;
+  }
+  return (unsigned char)data;
+}
+
+void eeprom_read_block(void *__dst, const void *__src, size_t __n) {
+  uint16_t data = 0xFF;
+  uint16_t eeprom_address = (unsigned) __src;
+
+  eeprom_init();
+
+  for (uint8_t c = 0; c < __n; c++) {
+    EE_ReadVariable(eeprom_address+c, &data);
+    *((uint8_t*)__dst + c) = data;
+  }
+}
+
+void eeprom_update_block(const void *__src, void *__dst, size_t __n) {
+
+}
+
+#endif // ENABLED(EEPROM_SETTINGS) && DISABLED(I2C_EEPROM) && DISABLED(SPI_EEPROM)
+#endif // STM32F4
+

Marlin/src/HAL/HAL_STM32F4/HAL.cpp

@@ -0,0 +1,140 @@
+/**
+ * Marlin 3D Printer Firmware
+ *
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+ * Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
+ * Copyright (c) 2017 Victor Perez
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+
+#ifdef STM32F4
+
+// --------------------------------------------------------------------------
+// Includes
+// --------------------------------------------------------------------------
+
+#include "HAL.h"
+
+//#include <Wire.h>
+
+// --------------------------------------------------------------------------
+// Externals
+// --------------------------------------------------------------------------
+
+// --------------------------------------------------------------------------
+// Local defines
+// --------------------------------------------------------------------------
+
+// --------------------------------------------------------------------------
+// Types
+// --------------------------------------------------------------------------
+
+// --------------------------------------------------------------------------
+// Variables
+// --------------------------------------------------------------------------
+
+// --------------------------------------------------------------------------
+// Public Variables
+// --------------------------------------------------------------------------
+
+uint16_t HAL_adc_result;
+
+// --------------------------------------------------------------------------
+// Private Variables
+// --------------------------------------------------------------------------
+
+// --------------------------------------------------------------------------
+// Function prototypes
+// --------------------------------------------------------------------------
+
+// --------------------------------------------------------------------------
+// Private functions
+// --------------------------------------------------------------------------
+
+// --------------------------------------------------------------------------
+// Public functions
+// --------------------------------------------------------------------------
+
+/* VGPV Done with defines
+// disable interrupts
+void cli(void) { noInterrupts(); }
+
+// enable interrupts
+void sei(void) { interrupts(); }
+*/
+
+void HAL_clear_reset_source(void) { __HAL_RCC_CLEAR_RESET_FLAGS(); }
+
+uint8_t HAL_get_reset_source (void) {
+  if (__HAL_RCC_GET_FLAG(RCC_FLAG_IWDGRST) != RESET)
+    return RST_WATCHDOG;
+
+  if (__HAL_RCC_GET_FLAG(RCC_FLAG_SFTRST) != RESET)
+    return RST_SOFTWARE;
+
+  if (__HAL_RCC_GET_FLAG(RCC_FLAG_PINRST) != RESET)
+    return RST_EXTERNAL;
+
+  if (__HAL_RCC_GET_FLAG(RCC_FLAG_PORRST) != RESET)
+    return RST_POWER_ON;
+  return 0;
+}
+
+void _delay_ms(const int delay_ms) { delay(delay_ms); }
+
+extern "C" {
+  extern unsigned int _ebss; // end of bss section
+}
+
+// return free memory between end of heap (or end bss) and whatever is current
+
+/*
+#include "wirish/syscalls.c"
+//extern caddr_t _sbrk(int incr);
+#ifndef CONFIG_HEAP_END
+extern char _lm_heap_end;
+#define CONFIG_HEAP_END ((caddr_t)&_lm_heap_end)
+#endif
+
+extern "C" {
+  static int freeMemory() {
+    char top = 't';
+    return &top - reinterpret_cast<char*>(sbrk(0));
+  }
+  int freeMemory() {
+    int free_memory;
+    int heap_end = (int)_sbrk(0);
+    free_memory = ((int)&free_memory) - ((int)heap_end);
+    return free_memory;
+  }
+}
+*/
+
+// --------------------------------------------------------------------------
+// ADC
+// --------------------------------------------------------------------------
+
+void HAL_adc_start_conversion(const uint8_t adc_pin) {
+  HAL_adc_result = analogRead(adc_pin);
+}
+
+uint16_t HAL_adc_get_result(void) {
+  return HAL_adc_result;
+}
+
+#endif // STM32F4

Marlin/src/HAL/HAL_STM32F4/HAL.h

@@ -0,0 +1,249 @@
+/**
+ * Marlin 3D Printer Firmware
+ *
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+ * Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
+ * Copyright (c) 2017 Victor Perez
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+
+
+#ifndef _HAL_STM32F4_H
+#define _HAL_STM32F4_H
+
+#define CPU_32_BIT
+#undef DEBUG_NONE
+
+#ifndef vsnprintf_P
+  #define vsnprintf_P vsnprintf
+#endif
+
+// --------------------------------------------------------------------------
+// Includes
+// --------------------------------------------------------------------------
+
+#include <stdint.h>
+
+#include "Arduino.h"
+
+#include "../math_32bit.h"
+#include "../HAL_SPI.h"
+#include "fastio_STM32F4.h"
+#include "watchdog_STM32F4.h"
+
+#include "HAL_timers_STM32F4.h"
+
+
+// --------------------------------------------------------------------------
+// Defines
+// --------------------------------------------------------------------------
+
+//Serial override
+//extern HalSerial usb_serial;
+
+#if SERIAL_PORT == 0
+  #error "Serial port 0 does not exist"
+#endif
+
+#if !WITHIN(SERIAL_PORT, -1, 6)
+  #error "SERIAL_PORT must be from -1 to 6"
+#endif
+#if SERIAL_PORT == -1
+  #define MYSERIAL0 SerialUSB
+#elif SERIAL_PORT == 1
+  #define MYSERIAL0 SerialUART1
+#elif SERIAL_PORT == 2
+  #define MYSERIAL0 SerialUART2
+#elif SERIAL_PORT == 3
+  #define MYSERIAL0 SerialUART3
+#elif SERIAL_PORT == 4
+  #define MYSERIAL0 SerialUART4
+#elif SERIAL_PORT == 5
+  #define MYSERIAL0 SerialUART5
+#elif SERIAL_PORT == 6
+  #define MYSERIAL0 SerialUART6
+#endif
+
+#ifdef SERIAL_PORT_2
+  #if SERIAL_PORT_2 == 0
+    #error "Serial port 0 does not exist"
+  #endif
+
+  #if !WITHIN(SERIAL_PORT_2, -1, 6)
+    #error "SERIAL_PORT_2 must be from -1 to 6"
+  #elif SERIAL_PORT_2 == SERIAL_PORT
+    #error "SERIAL_PORT_2 must be different than SERIAL_PORT"
+  #endif
+  #define NUM_SERIAL 2
+  #if SERIAL_PORT_2 == -1
+    #define MYSERIAL1 SerialUSB
+  #elif SERIAL_PORT_2 == 1
+    #define MYSERIAL1 SerialUART1
+  #elif SERIAL_PORT_2 == 2
+    #define MYSERIAL1 SerialUART2
+  #elif SERIAL_PORT_2 == 3
+    #define MYSERIAL1 SerialUART3
+  #elif SERIAL_PORT_2 == 4
+    #define MYSERIAL1 SerialUART4
+  #elif SERIAL_PORT_2 == 5
+    #define MYSERIAL1 SerialUART5
+  #elif SERIAL_PORT_2 == 6
+    #define MYSERIAL1 SerialUART6
+  #endif
+#else
+  #define NUM_SERIAL 1
+#endif
+
+#define _BV(b) (1 << (b))
+
+/**
+ * TODO: review this to return 1 for pins that are not analog input
+ */
+#ifndef analogInputToDigitalPin
+  #define analogInputToDigitalPin(p) (p)
+#endif
+
+#define CRITICAL_SECTION_START  noInterrupts();
+#define CRITICAL_SECTION_END    interrupts();
+
+// On AVR this is in math.h?
+#define square(x) ((x)*(x))
+
+#ifndef strncpy_P
+  #define strncpy_P(dest, src, num) strncpy((dest), (src), (num))
+#endif
+
+// Fix bug in pgm_read_ptr
+#undef pgm_read_ptr
+#define pgm_read_ptr(addr) (*(addr))
+
+#define RST_POWER_ON   1
+#define RST_EXTERNAL   2
+#define RST_BROWN_OUT  4
+#define RST_WATCHDOG   8
+#define RST_JTAG       16
+#define RST_SOFTWARE   32
+#define RST_BACKUP     64
+
+// --------------------------------------------------------------------------
+// Types
+// --------------------------------------------------------------------------
+
+typedef int8_t pin_t;
+
+#define HAL_SERVO_LIB libServo
+
+// --------------------------------------------------------------------------
+// Public Variables
+// --------------------------------------------------------------------------
+
+/** result of last ADC conversion */
+extern uint16_t HAL_adc_result;
+
+// --------------------------------------------------------------------------
+// Public functions
+// --------------------------------------------------------------------------
+
+// Disable interrupts
+#define cli() do {  DISABLE_TEMPERATURE_INTERRUPT(); DISABLE_STEPPER_DRIVER_INTERRUPT(); } while(0)
+
+// Enable interrupts
+#define sei() do {  ENABLE_TEMPERATURE_INTERRUPT(); ENABLE_STEPPER_DRIVER_INTERRUPT(); } while(0)
+
+// Memory related
+#define __bss_end __bss_end__
+
+/** clear reset reason */
+void HAL_clear_reset_source (void);
+
+/** reset reason */
+uint8_t HAL_get_reset_source (void);
+
+void _delay_ms(const int delay);
+
+/*
+extern "C" {
+  int freeMemory(void);
+}
+*/
+
+extern "C" char* _sbrk(int incr);
+/*
+static int freeMemory() {
+  volatile int top;
+  top = (int)((char*)&top - reinterpret_cast<char*>(_sbrk(0)));
+  return top;
+}
+*/
+static int freeMemory() {
+  volatile char top;
+  return &top - reinterpret_cast<char*>(_sbrk(0));
+}
+
+// SPI: Extended functions which take a channel number (hardware SPI only)
+/** Write single byte to specified SPI channel */
+void spiSend(uint32_t chan, byte b);
+/** Write buffer to specified SPI channel */
+void spiSend(uint32_t chan, const uint8_t* buf, size_t n);
+/** Read single byte from specified SPI channel */
+uint8_t spiRec(uint32_t chan);
+
+
+// EEPROM
+
+/**
+ * TODO: Write all this eeprom stuff. Can emulate eeprom in flash as last resort.
+ * Wire library should work for i2c eeproms.
+ */
+void eeprom_write_byte(unsigned char *pos, unsigned char value);
+unsigned char eeprom_read_byte(unsigned char *pos);
+void eeprom_read_block (void *__dst, const void *__src, size_t __n);
+void eeprom_update_block (const void *__src, void *__dst, size_t __n);
+
+// ADC
+
+#define HAL_ANALOG_SELECT(pin) pinMode(pin, INPUT)
+
+inline void HAL_adc_init(void) {}
+
+#define HAL_START_ADC(pin)  HAL_adc_start_conversion(pin)
+#define HAL_READ_ADC        HAL_adc_result
+
+void HAL_adc_start_conversion(const uint8_t adc_pin);
+
+uint16_t HAL_adc_get_result(void);
+
+/* Todo: Confirm none of this is needed.
+uint16_t HAL_getAdcReading(uint8_t chan);
+
+void HAL_startAdcConversion(uint8_t chan);
+uint8_t HAL_pinToAdcChannel(int pin);
+
+uint16_t HAL_getAdcFreerun(uint8_t chan, bool wait_for_conversion = false);
+//uint16_t HAL_getAdcSuperSample(uint8_t chan);
+
+void HAL_enable_AdcFreerun(void);
+//void HAL_disable_AdcFreerun(uint8_t chan);
+
+*/
+
+#define GET_PIN_MAP_PIN(index) index
+#define GET_PIN_MAP_INDEX(pin) pin
+#define PARSED_PIN_INDEX(code, dval) parser.intval(code, dval)
+
+#endif // _HAL_STM32F4_H

Marlin/src/HAL/HAL_STM32F4/HAL_Servo_STM32F4.cpp

@@ -0,0 +1,53 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ * Copyright (C) 2017 Victor Perez
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifdef STM32F4
+
+#include "../../inc/MarlinConfig.h"
+
+#if HAS_SERVOS
+
+#include "HAL_Servo_STM32F4.h"
+
+int8_t libServo::attach(const int pin) {
+  return Servo::attach(pin);
+}
+
+int8_t libServo::attach(const int pin, const int min, const int max) {
+  return Servo::attach(pin, min, max);
+}
+
+void libServo::move(const int value) {
+  constexpr uint16_t servo_delay[] = SERVO_DELAY;
+  static_assert(COUNT(servo_delay) == NUM_SERVOS, "SERVO_DELAY must be an array NUM_SERVOS long."); 
+  if (this->attach(0) >= 0) {
+    this->write(value);
+    safe_delay(servo_delay[this->servoIndex]);
+    #if ENABLED(DEACTIVATE_SERVOS_AFTER_MOVE)
+      this->detach();
+    #endif
+  }
+}
+#endif // HAS_SERVOS
+
+#endif // STM32F4

Marlin/src/HAL/HAL_STM32F4/HAL_Servo_STM32F4.h

@@ -0,0 +1,41 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ * Copyright (C) 2017 Victor Perez
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef HAL_SERVO_STM32F4_H
+#define HAL_SERVO_STM32F4_H
+
+#include <Servo.h>
+
+// Inherit and expand on the official library
+class libServo : public Servo {
+public:
+    int8_t attach(const int pin);
+    int8_t attach(const int pin, const int min, const int max);
+    void move(const int value);
+private:
+    uint16_t min_ticks;
+    uint16_t max_ticks;
+    uint8_t servoIndex;               // index into the channel data for this servo
+};
+
+#endif // HAL_SERVO_STM32F4_H

Marlin/src/HAL/HAL_STM32F4/HAL_spi_STM32F4.cpp

@@ -0,0 +1,165 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ * Copyright (C) 2017 Victor Perez
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/**
+ * Software SPI functions originally from Arduino Sd2Card Library
+ * Copyright (C) 2009 by William Greiman
+ */
+
+/**
+ * Adapted to the STM32F4 HAL
+ */
+
+#ifdef STM32F4
+
+// --------------------------------------------------------------------------
+// Includes
+// --------------------------------------------------------------------------
+
+#include "HAL.h"
+#include "../HAL_SPI.h"
+#include "pins_arduino.h"
+#include "spi_pins.h"
+#include "../../core/macros.h"
+#include <SPI.h>
+
+// --------------------------------------------------------------------------
+// Public Variables
+// --------------------------------------------------------------------------
+
+static SPISettings spiConfig;
+
+// --------------------------------------------------------------------------
+// Public functions
+// --------------------------------------------------------------------------
+
+#if ENABLED(SOFTWARE_SPI)
+  // --------------------------------------------------------------------------
+  // Software SPI
+  // --------------------------------------------------------------------------
+  #error "Software SPI not supported for STM32F4. Use hardware SPI."
+
+#else
+
+// --------------------------------------------------------------------------
+// Hardware SPI
+// --------------------------------------------------------------------------
+
+/**
+ * VGPV SPI speed start and F_CPU/2, by default 72/2 = 36Mhz
+ */
+
+/**
+ * @brief  Begin SPI port setup
+ *
+ * @return Nothing
+ *
+ * @details Only configures SS pin since libmaple creates and initialize the SPI object
+ */
+void spiBegin(void) {
+  #if !PIN_EXISTS(SS)
+    #error SS_PIN not defined!
+  #endif
+
+  SET_OUTPUT(SS_PIN);
+  WRITE(SS_PIN, HIGH);
+}
+
+/** Configure SPI for specified SPI speed */
+void spiInit(uint8_t spiRate) {
+  // Use datarates Marlin uses
+  uint32_t clock;
+  switch (spiRate) {
+  case SPI_FULL_SPEED:    clock = 20000000; break; // 13.9mhz=20000000  6.75mhz=10000000  3.38mhz=5000000  .833mhz=1000000
+  case SPI_HALF_SPEED:    clock =  5000000; break;
+  case SPI_QUARTER_SPEED: clock =  2500000; break;
+  case SPI_EIGHTH_SPEED:  clock =  1250000; break;
+  case SPI_SPEED_5:       clock =   625000; break;
+  case SPI_SPEED_6:       clock =   300000; break;
+  default:
+    clock = 4000000; // Default from the SPI libarary
+  }
+  spiConfig = SPISettings(clock, MSBFIRST, SPI_MODE0);
+  SPI.begin();
+}
+
+/**
+ * @brief  Receives a single byte from the SPI port.
+ *
+ * @return Byte received
+ *
+ * @details
+ */
+uint8_t spiRec(void) {
+  SPI.beginTransaction(spiConfig);
+  uint8_t returnByte = SPI.transfer(0xFF);
+  SPI.endTransaction();
+  return returnByte;
+}
+
+/**
+ * @brief  Receives a number of bytes from the SPI port to a buffer
+ *
+ * @param  buf   Pointer to starting address of buffer to write to.
+ * @param  nbyte Number of bytes to receive.
+ * @return Nothing
+ *
+ * @details Uses DMA
+ */
+void spiRead(uint8_t* buf, uint16_t nbyte) {
+  SPI.beginTransaction(spiConfig);
+  SPI.dmaTransfer(0, const_cast<uint8_t*>(buf), nbyte);
+  SPI.endTransaction();
+}
+
+/**
+ * @brief  Sends a single byte on SPI port
+ *
+ * @param  b Byte to send
+ *
+ * @details
+ */
+void spiSend(uint8_t b) {
+  SPI.beginTransaction(spiConfig);
+  SPI.transfer(b);
+  SPI.endTransaction();
+}
+
+/**
+ * @brief  Write token and then write from 512 byte buffer to SPI (for SD card)
+ *
+ * @param  buf   Pointer with buffer start address
+ * @return Nothing
+ *
+ * @details Use DMA
+ */
+void spiSendBlock(uint8_t token, const uint8_t* buf) {
+  SPI.beginTransaction(spiConfig);
+  SPI.transfer(token);
+  SPI.dmaSend(const_cast<uint8_t*>(buf), 512);
+  SPI.endTransaction();
+}
+
+#endif // SOFTWARE_SPI
+
+#endif // STM32F4

Marlin/src/HAL/HAL_STM32F4/HAL_timers_STM32F4.cpp

@@ -0,0 +1,156 @@
+/**
+ * Marlin 3D Printer Firmware
+ *
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+ * Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifdef STM32F4
+
+// --------------------------------------------------------------------------
+// Includes
+// --------------------------------------------------------------------------
+
+#include "HAL.h"
+
+#include "HAL_timers_STM32F4.h"
+
+// --------------------------------------------------------------------------
+// Externals
+// --------------------------------------------------------------------------
+
+// --------------------------------------------------------------------------
+// Local defines
+// --------------------------------------------------------------------------
+
+#define NUM_HARDWARE_TIMERS 2
+
+//#define PRESCALER 1
+// --------------------------------------------------------------------------
+// Types
+// --------------------------------------------------------------------------
+
+// --------------------------------------------------------------------------
+// Public Variables
+// --------------------------------------------------------------------------
+
+// --------------------------------------------------------------------------
+// Private Variables
+// --------------------------------------------------------------------------
+
+tTimerConfig timerConfig[NUM_HARDWARE_TIMERS];
+
+// --------------------------------------------------------------------------
+// Function prototypes
+// --------------------------------------------------------------------------
+
+// --------------------------------------------------------------------------
+// Private functions
+// --------------------------------------------------------------------------
+
+// --------------------------------------------------------------------------
+// Public functions
+// --------------------------------------------------------------------------
+
+bool timers_initialised[NUM_HARDWARE_TIMERS] = {false};
+
+void HAL_timer_start(const uint8_t timer_num, const uint32_t frequency) {
+
+  if (!timers_initialised[timer_num]) {
+    switch (timer_num) {
+    case STEP_TIMER_NUM:
+      //STEPPER TIMER TIM5 //use a 32bit timer
+      __HAL_RCC_TIM5_CLK_ENABLE();
+      timerConfig[0].timerdef.Instance            = TIM5;
+      timerConfig[0].timerdef.Init.Prescaler      = (STEPPER_TIMER_PRESCALE);
+      timerConfig[0].timerdef.Init.CounterMode    = TIM_COUNTERMODE_UP;
+      timerConfig[0].timerdef.Init.ClockDivision  = TIM_CLOCKDIVISION_DIV1;
+      timerConfig[0].IRQ_Id = TIM5_IRQn;
+      timerConfig[0].callback = (uint32_t)TC5_Handler;
+      HAL_NVIC_SetPriority(timerConfig[0].IRQ_Id, 1, 0);
+      break;
+    case TEMP_TIMER_NUM:
+      //TEMP TIMER TIM7 // any available 16bit Timer (1 already used for PWM)
+      __HAL_RCC_TIM7_CLK_ENABLE();
+      timerConfig[1].timerdef.Instance            = TIM7;
+      timerConfig[1].timerdef.Init.Prescaler      = (TEMP_TIMER_PRESCALE);
+      timerConfig[1].timerdef.Init.CounterMode    = TIM_COUNTERMODE_UP;
+      timerConfig[1].timerdef.Init.ClockDivision  = TIM_CLOCKDIVISION_DIV1;
+      timerConfig[1].IRQ_Id = TIM7_IRQn;
+      timerConfig[1].callback = (uint32_t)TC7_Handler;
+      HAL_NVIC_SetPriority(timerConfig[1].IRQ_Id, 2, 0);
+      break;
+    }
+    timers_initialised[timer_num] = true;
+  }
+
+  timerConfig[timer_num].timerdef.Init.Period = (((HAL_TIMER_RATE) / timerConfig[timer_num].timerdef.Init.Prescaler) / frequency) - 1;
+
+  if (HAL_TIM_Base_Init(&timerConfig[timer_num].timerdef) == HAL_OK)
+    HAL_TIM_Base_Start_IT(&timerConfig[timer_num].timerdef);
+}
+
+//forward the interrupt
+extern "C" void TIM5_IRQHandler() {
+  ((void(*)(void))timerConfig[0].callback)();
+}
+extern "C" void TIM7_IRQHandler() {
+  ((void(*)(void))timerConfig[1].callback)();
+}
+
+void HAL_timer_set_compare(const uint8_t timer_num, const uint32_t compare) {
+  __HAL_TIM_SetAutoreload(&timerConfig[timer_num].timerdef, compare);
+}
+
+void HAL_timer_enable_interrupt(const uint8_t timer_num) {
+  HAL_NVIC_EnableIRQ(timerConfig[timer_num].IRQ_Id);
+}
+
+void HAL_timer_disable_interrupt(const uint8_t timer_num) {
+  HAL_NVIC_DisableIRQ(timerConfig[timer_num].IRQ_Id);
+}
+
+hal_timer_t HAL_timer_get_compare(const uint8_t timer_num) {
+  return __HAL_TIM_GetAutoreload(&timerConfig[timer_num].timerdef);
+}
+
+uint32_t HAL_timer_get_count(const uint8_t timer_num) {
+  return __HAL_TIM_GetCounter(&timerConfig[timer_num].timerdef);
+}
+
+void HAL_timer_restrain(const uint8_t timer_num, const uint16_t interval_ticks) {
+  const hal_timer_t mincmp = HAL_timer_get_count(timer_num) + interval_ticks;
+  if (HAL_timer_get_compare(timer_num) < mincmp) HAL_timer_set_compare(timer_num, mincmp);
+}
+
+void HAL_timer_isr_prologue(const uint8_t timer_num) {
+  if (__HAL_TIM_GET_FLAG(&timerConfig[timer_num].timerdef, TIM_FLAG_UPDATE) == SET) {
+    __HAL_TIM_CLEAR_FLAG(&timerConfig[timer_num].timerdef, TIM_FLAG_UPDATE);
+  }
+}
+
+bool HAL_timer_interrupt_enabled(const uint8_t timer_num) {
+  if (NVIC->ISER[(uint32_t)((int32_t)timerConfig[timer_num].IRQ_Id) >> 5] & (uint32_t)(1 << ((uint32_t)((int32_t)timerConfig[timer_num].IRQ_Id) & (uint32_t)0x1F))) {
+    return true;
+  }
+  else {
+    return false;
+  }
+}
+
+#endif // STM32F4

Marlin/src/HAL/HAL_STM32F4/HAL_timers_STM32F4.h

@@ -0,0 +1,105 @@
+/**
+ * Marlin 3D Printer Firmware
+ *
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+ * Copyright (c) 2017 Victor Perez
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef _HAL_TIMERS_STM32F4_H
+#define _HAL_TIMERS_STM32F4_H
+
+// --------------------------------------------------------------------------
+// Includes
+// --------------------------------------------------------------------------
+
+#include <stdint.h>
+
+// --------------------------------------------------------------------------
+// Defines
+// --------------------------------------------------------------------------
+
+#define FORCE_INLINE __attribute__((always_inline)) inline
+
+#define hal_timer_t uint32_t  // TODO: One is 16-bit, one 32-bit - does this need to be checked?
+#define HAL_TIMER_TYPE_MAX 0xFFFF
+
+#define STEP_TIMER_NUM 0  // index of timer to use for stepper
+#define TEMP_TIMER_NUM 1  // index of timer to use for temperature
+
+#define HAL_TIMER_RATE         (HAL_RCC_GetSysClockFreq() / 2)  // frequency of timer peripherals
+#define STEPPER_TIMER_PRESCALE 54            // was 40,prescaler for setting stepper timer, 2Mhz
+#define HAL_STEPPER_TIMER_RATE (HAL_TIMER_RATE / STEPPER_TIMER_PRESCALE)   // frequency of stepper timer (HAL_TIMER_RATE / STEPPER_TIMER_PRESCALE)
+#define HAL_TICKS_PER_US       ((HAL_STEPPER_TIMER_RATE) / 1000000) // stepper timer ticks per µs
+
+#define PULSE_TIMER_NUM STEP_TIMER_NUM
+#define PULSE_TIMER_PRESCALE STEPPER_TIMER_PRESCALE
+
+#define TEMP_TIMER_PRESCALE     1000 // prescaler for setting Temp timer, 72Khz
+#define TEMP_TIMER_FREQUENCY    1000 // temperature interrupt frequency
+
+#define STEP_TIMER_MIN_INTERVAL    8 // minimum time in µs between stepper interrupts
+
+#define ENABLE_STEPPER_DRIVER_INTERRUPT() HAL_timer_enable_interrupt(STEP_TIMER_NUM)
+#define DISABLE_STEPPER_DRIVER_INTERRUPT() HAL_timer_disable_interrupt(STEP_TIMER_NUM)
+#define STEPPER_ISR_ENABLED() HAL_timer_interrupt_enabled(STEP_TIMER_NUM)
+
+#define ENABLE_TEMPERATURE_INTERRUPT() HAL_timer_enable_interrupt(TEMP_TIMER_NUM)
+#define DISABLE_TEMPERATURE_INTERRUPT() HAL_timer_disable_interrupt(TEMP_TIMER_NUM)
+
+#define HAL_ENABLE_ISRs() do { if (thermalManager.in_temp_isr)DISABLE_TEMPERATURE_INTERRUPT(); else ENABLE_TEMPERATURE_INTERRUPT(); ENABLE_STEPPER_DRIVER_INTERRUPT(); } while(0)
+// TODO change this
+
+
+extern void TC5_Handler();
+extern void TC7_Handler();
+#define HAL_STEP_TIMER_ISR  void TC5_Handler()
+#define HAL_TEMP_TIMER_ISR  void TC7_Handler()
+
+// --------------------------------------------------------------------------
+// Types
+// --------------------------------------------------------------------------
+
+typedef struct {
+  TIM_HandleTypeDef timerdef;
+  IRQn_Type   IRQ_Id;
+  uint32_t callback;
+} tTimerConfig;
+
+// --------------------------------------------------------------------------
+// Public Variables
+// --------------------------------------------------------------------------
+
+//extern const tTimerConfig timerConfig[];
+
+// --------------------------------------------------------------------------
+// Public functions
+// --------------------------------------------------------------------------
+
+void HAL_timer_start(const uint8_t timer_num, const uint32_t frequency);
+void HAL_timer_enable_interrupt(const uint8_t timer_num);
+void HAL_timer_disable_interrupt(const uint8_t timer_num);
+bool HAL_timer_interrupt_enabled(const uint8_t timer_num);
+
+void HAL_timer_set_compare(const uint8_t timer_num, const uint32_t compare);
+hal_timer_t HAL_timer_get_compare(const uint8_t timer_num);
+uint32_t HAL_timer_get_count(const uint8_t timer_num);
+void HAL_timer_restrain(const uint8_t timer_num, const uint16_t interval_ticks);
+
+void HAL_timer_isr_prologue(const uint8_t timer_num);
+
+#endif // _HAL_TIMERS_STM32F4_H

Marlin/src/HAL/HAL_STM32F4/README.md

@@ -0,0 +1,12 @@
+# This HAL is for the STM32F407 MCU used with STM32Generic Arduino core by danieleff.
+
+# Arduino core is located at:
+
+https://github.com/danieleff/STM32GENERIC
+
+Unzip it into [Arduino]/hardware folder
+
+# This HAL is in development.
+
+This HAL is a modified version of Chris Barr's Picoprint STM32F4 HAL.
+

Marlin/src/HAL/HAL_STM32F4/SanityCheck.h

@@ -0,0 +1,66 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016, 2017 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/**
+ * Test Re-ARM specific configuration values for errors at compile-time.
+ */
+#if ENABLED(SPINDLE_LASER_ENABLE)
+  #if !PIN_EXISTS(SPINDLE_LASER_ENABLE)
+    #error "SPINDLE_LASER_ENABLE requires SPINDLE_LASER_ENABLE_PIN."
+  #elif SPINDLE_DIR_CHANGE && !PIN_EXISTS(SPINDLE_DIR)
+    #error "SPINDLE_DIR_PIN not defined."
+  #elif ENABLED(SPINDLE_LASER_PWM) && PIN_EXISTS(SPINDLE_LASER_PWM)
+    #if !PWM_PIN(SPINDLE_LASER_PWM_PIN)
+      #error "SPINDLE_LASER_PWM_PIN not assigned to a PWM pin."
+    #elif !(SPINDLE_LASER_PWM_PIN == 4 || SPINDLE_LASER_PWM_PIN == 6 || SPINDLE_LASER_PWM_PIN == 11)
+      #error "SPINDLE_LASER_PWM_PIN must use SERVO0, SERVO1 or SERVO3 connector"
+    #elif SPINDLE_LASER_POWERUP_DELAY < 1
+      #error "SPINDLE_LASER_POWERUP_DELAY must be greater than 0."
+    #elif SPINDLE_LASER_POWERDOWN_DELAY < 1
+      #error "SPINDLE_LASER_POWERDOWN_DELAY must be greater than 0."
+    #elif !defined(SPINDLE_LASER_PWM_INVERT)
+      #error "SPINDLE_LASER_PWM_INVERT missing."
+    #elif !defined(SPEED_POWER_SLOPE) || !defined(SPEED_POWER_INTERCEPT) || !defined(SPEED_POWER_MIN) || !defined(SPEED_POWER_MAX)
+      #error "SPINDLE_LASER_PWM equation constant(s) missing."
+    #elif PIN_EXISTS(CASE_LIGHT) && SPINDLE_LASER_PWM_PIN == CASE_LIGHT_PIN
+      #error "SPINDLE_LASER_PWM_PIN is used by CASE_LIGHT_PIN."
+    #elif PIN_EXISTS(E0_AUTO_FAN) && SPINDLE_LASER_PWM_PIN == E0_AUTO_FAN_PIN
+      #error "SPINDLE_LASER_PWM_PIN is used by E0_AUTO_FAN_PIN."
+    #elif PIN_EXISTS(E1_AUTO_FAN) && SPINDLE_LASER_PWM_PIN == E1_AUTO_FAN_PIN
+      #error "SPINDLE_LASER_PWM_PIN is used by E1_AUTO_FAN_PIN."
+    #elif PIN_EXISTS(E2_AUTO_FAN) && SPINDLE_LASER_PWM_PIN == E2_AUTO_FAN_PIN
+      #error "SPINDLE_LASER_PWM_PIN is used by E2_AUTO_FAN_PIN."
+    #elif PIN_EXISTS(E3_AUTO_FAN) && SPINDLE_LASER_PWM_PIN == E3_AUTO_FAN_PIN
+      #error "SPINDLE_LASER_PWM_PIN is used by E3_AUTO_FAN_PIN."
+    #elif PIN_EXISTS(E4_AUTO_FAN) && SPINDLE_LASER_PWM_PIN == E4_AUTO_FAN_PIN
+      #error "SPINDLE_LASER_PWM_PIN is used by E4_AUTO_FAN_PIN."
+    #elif PIN_EXISTS(FAN) && SPINDLE_LASER_PWM_PIN == FAN_PIN
+      #error "SPINDLE_LASER_PWM_PIN is used FAN_PIN."
+    #elif PIN_EXISTS(FAN1) && SPINDLE_LASER_PWM_PIN == FAN1_PIN
+      #error "SPINDLE_LASER_PWM_PIN is used FAN1_PIN."
+    #elif PIN_EXISTS(FAN2) && SPINDLE_LASER_PWM_PIN == FAN2_PIN
+      #error "SPINDLE_LASER_PWM_PIN is used FAN2_PIN."
+    #elif PIN_EXISTS(CONTROLLERFAN) && SPINDLE_LASER_PWM_PIN == CONTROLLERFAN_PIN
+      #error "SPINDLE_LASER_PWM_PIN is used by CONTROLLERFAN_PIN."
+    #endif
+  #endif
+#endif // SPINDLE_LASER_ENABLE

Marlin/src/HAL/HAL_STM32F4/endstop_interrupts.h

@@ -0,0 +1,77 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ * Copyright (C) 2017 Victor Perez
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef _ENDSTOP_INTERRUPTS_H_
+#define _ENDSTOP_INTERRUPTS_H_
+
+volatile uint8_t e_hit = 0; // Different from 0 when the endstops should be tested in detail.
+                            // Must be reset to 0 by the test function when finished.
+
+// This is what is really done inside the interrupts.
+FORCE_INLINE void endstop_ISR_worker( void ) {
+  e_hit = 2; // Because the detection of a e-stop hit has a 1 step debouncer it has to be called at least twice.
+}
+
+// One ISR for all EXT-Interrupts
+void endstop_ISR(void) { endstop_ISR_worker(); }
+
+void setup_endstop_interrupts(void) {
+  #if HAS_X_MAX
+    pinMode(X_MAX_PIN, INPUT);
+    attachInterrupt(X_MAX_PIN, endstop_ISR, CHANGE); // assign it
+  #endif
+  #if HAS_X_MIN
+    pinMode(X_MIN_PIN, INPUT);
+    attachInterrupt(X_MIN_PIN, endstop_ISR, CHANGE);
+  #endif
+  #if HAS_Y_MAX
+    pinMode(Y_MAX_PIN, INPUT);
+    attachInterrupt(Y_MAX_PIN, endstop_ISR, CHANGE);
+  #endif
+  #if HAS_Y_MIN
+    pinMode(Y_MIN_PIN, INPUT);
+    attachInterrupt(Y_MIN_PIN, endstop_ISR, CHANGE);
+  #endif
+  #if HAS_Z_MAX
+    pinMode(Z_MAX_PIN, INPUT);
+    attachInterrupt(Z_MAX_PIN, endstop_ISR, CHANGE);
+  #endif
+  #if HAS_Z_MIN
+    pinMode(Z_MIN_PIN, INPUT);
+    attachInterrupt(Z_MIN_PIN, endstop_ISR, CHANGE);
+  #endif
+  #if HAS_Z2_MAX
+    pinMode(Z2_MAX_PIN, INPUT);
+    attachInterrupt(Z2_MAX_PIN, endstop_ISR, CHANGE);
+  #endif
+  #if HAS_Z2_MIN
+    pinMode(Z2_MIN_PIN, INPUT);
+    attachInterrupt(Z2_MIN_PIN, endstop_ISR, CHANGE);
+  #endif
+  #if HAS_Z_MIN_PROBE_PIN
+    pinMode(Z_MIN_PROBE_PIN, INPUT);
+    attachInterrupt(Z_MIN_PROBE_PIN, endstop_ISR, CHANGE);
+  #endif
+}
+
+#endif //_ENDSTOP_INTERRUPTS_H_

Marlin/src/HAL/HAL_STM32F4/fastio_STM32F4.h

@@ -0,0 +1,54 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ * Copyright (C) 2017 Victor Perez
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/**
+ * Fast I/O interfaces for STM32F4
+ * These use GPIO functions instead of Direct Port Manipulation, as on AVR.
+ */
+
+#ifndef _FASTIO_STM32F4_H
+#define _FASTIO_STM32F4_H
+
+#define _BV(b) (1 << (b))
+
+#define READ(IO)              digitalRead(IO)
+#define WRITE(IO, v)          digitalWrite(IO,v)
+#define TOGGLE(IO)            do{ _SET_OUTPUT(IO); digitalWrite(IO,!digitalRead(IO)); }while(0)
+#define WRITE_VAR(IO, v)      digitalWrite(IO,v)
+
+#define _GET_MODE(IO)
+#define _SET_MODE(IO,M)       pinMode(IO, M)
+#define _SET_OUTPUT(IO)       pinMode(IO, OUTPUT)                               /*!< Output Push Pull Mode & GPIO_NOPULL   */
+
+#define SET_INPUT(IO)         _SET_MODE(IO, INPUT)                              /*!< Input Floating Mode                   */
+#define SET_INPUT_PULLUP(IO)  _SET_MODE(IO, INPUT_PULLUP)                       /*!< Input with Pull-up activation         */
+#define SET_INPUT_PULLDOW(IO) _SET_MODE(IO, INPUT_PULLDOWN)                     /*!< Input with Pull-down activation       */
+#define SET_OUTPUT(IO)        do{ _SET_OUTPUT(IO); WRITE(IO, LOW); }while(0)
+
+#define GET_INPUT(IO)
+#define GET_OUTPUT(IO)
+#define GET_TIMER(IO)
+
+#define OUT_WRITE(IO, v) { _SET_OUTPUT(IO); WRITE(IO, v); }
+
+#endif // _FASTIO_STM32F4_H

Marlin/src/HAL/HAL_STM32F4/persistent_store_impl.cpp

@@ -0,0 +1,75 @@
+/**
+ * Marlin 3D Printer Firmware
+ *
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+ * Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
+ * Copyright (c) 2016 Victor Perez victor_pv@hotmail.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifdef STM32F4
+
+#include "../persistent_store_api.h"
+
+#include "../../inc/MarlinConfig.h"
+
+#if ENABLED(EEPROM_SETTINGS)
+
+namespace HAL {
+namespace PersistentStore {
+
+bool access_start() { return true; }
+
+bool access_finish() { return true; }
+
+bool write_data(int &pos, const uint8_t *value, uint16_t size, uint16_t *crc) {
+  while (size--) {
+    uint8_t * const p = (uint8_t * const)pos;
+    uint8_t v = *value;
+    // EEPROM has only ~100,000 write cycles,
+    // so only write bytes that have changed!
+    if (v != eeprom_read_byte(p)) {
+      eeprom_write_byte(p, v);
+      if (eeprom_read_byte(p) != v) {
+        SERIAL_ECHO_START();
+        SERIAL_ECHOLNPGM(MSG_ERR_EEPROM_WRITE);
+        return true;
+      }
+    }
+    crc16(crc, &v, 1);
+    pos++;
+    value++;
+  };
+  return false;
+}
+
+bool read_data(int &pos, uint8_t* value, uint16_t size, uint16_t *crc, const bool writing) {
+  do {
+    uint8_t c = eeprom_read_byte((unsigned char*)pos);
+    if (writing) *value = c;
+    crc16(crc, &c, 1);
+    pos++;
+    value++;
+  } while (--size);
+  return false;
+}
+
+} // PersistentStore
+} // HAL
+
+#endif // EEPROM_SETTINGS
+#endif // STM32F4

Marlin/src/HAL/HAL_STM32F4/pinsDebug.h

@@ -0,0 +1 @@
+#error Debug pins is not supported on this Platform!

Marlin/src/HAL/HAL_STM32F4/spi_pins.h

@@ -0,0 +1,41 @@
+/**
+* Marlin 3D Printer Firmware
+* Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+*
+* This program is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*/
+
+#ifndef SPI_PINS_H_
+#define SPI_PINS_H_
+
+
+/**
+ * Define SPI Pins: SCK, MISO, MOSI, SS
+ *
+ */
+#ifndef SCK_PIN
+    #define SCK_PIN   PA5
+#endif
+#ifndef MISO_PIN
+    #define MISO_PIN  PA6
+#endif
+#ifndef MOSI_PIN
+    #define MOSI_PIN  PA7
+#endif
+#ifndef SS_PIN
+    #define SS_PIN    PA8
+#endif
+
+#endif // SPI_PINS_H_

Marlin/src/HAL/HAL_STM32F4/watchdog_STM32F4.cpp

@@ -0,0 +1,57 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifdef STM32F4
+
+#include "../../inc/MarlinConfig.h"
+
+#if ENABLED(USE_WATCHDOG)
+
+  #include "watchdog_STM32F4.h"
+
+  IWDG_HandleTypeDef hiwdg;
+
+  void watchdog_init() {
+    hiwdg.Instance = IWDG;
+    hiwdg.Init.Prescaler = IWDG_PRESCALER_32; //32kHz LSI clock and 32x prescalar = 1024Hz IWDG clock
+    hiwdg.Init.Reload = 4095;           //4095 counts = 4 seconds at 1024Hz
+    if (HAL_IWDG_Init(&hiwdg) != HAL_OK) {
+      //Error_Handler();
+    }
+  }
+
+  void watchdog_reset() {
+    /* Refresh IWDG: reload counter */
+    if (HAL_IWDG_Refresh(&hiwdg) != HAL_OK) {
+      /* Refresh Error */
+      //Error_Handler();
+    }
+    else {
+    #if PIN_EXISTS(LED)
+      TOGGLE(LED_PIN);  // heart beat indicator
+    #endif
+    }
+  }
+
+#endif // USE_WATCHDOG
+
+#endif // STM32F4

Marlin/src/HAL/HAL_STM32F4/watchdog_STM32F4.h

@@ -0,0 +1,33 @@
+/**
+* Marlin 3D Printer Firmware
+* Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+*
+* Based on Sprinter and grbl.
+* Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+*
+* This program is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*/
+
+#ifndef WATCHDOG_STM32F4_H
+#define WATCHDOG_STM32F4_H
+
+#include "../../inc/MarlinConfig.h"
+
+extern IWDG_HandleTypeDef hiwdg;
+
+void watchdog_init();
+void watchdog_reset();
+
+#endif // WATCHDOG_STM32F1_H

Marlin/src/HAL/platforms.h

@@ -13,6 +13,8 @@
   #define HAL_PLATFORM HAL_LPC1768
 #elif defined(__STM32F1__) || defined(TARGET_STM32F1)
   #define HAL_PLATFORM HAL_STM32F1
+#elif defined(STM32F4)
+  #define HAL_PLATFORM HAL_STM32F4  
 #elif defined(STM32F7)
   #define HAL_PLATFORM HAL_STM32F7
 #else

Marlin/src/HAL/servo.cpp

@@ -54,7 +54,7 @@
 
 #include "../inc/MarlinConfig.h"
 
-#if HAS_SERVOS && !(IS_32BIT_TEENSY || defined(TARGET_LPC1768))
+#if HAS_SERVOS && !(IS_32BIT_TEENSY || defined(TARGET_LPC1768) || defined(STM32F4))
 
 //#include <Arduino.h>
 #include "servo.h"

Marlin/src/HAL/servo.h

@@ -74,7 +74,8 @@
 
 #elif defined(TARGET_LPC1768)
   #include "HAL_LPC1768/LPC1768_Servo.h"
-
+#elif defined(STM32F4)
+  #include "HAL_STM32F4/HAL_Servo_STM32F4.h"
 #else
   #include <stdint.h>
 

Marlin/src/backtrace/unwmemaccess.cpp

@@ -62,6 +62,17 @@
 #define END_FLASH_ADDR    0x00080000
 #endif
 
+#ifdef STM32F4
+// For STM32F407VET
+//  SRAM  (0x20000000 - 0x20030000) (192kb)
+//  FLASH (0x08000000 - 0x08080000) (512kb)
+//
+#define START_SRAM_ADDR   0x20000000
+#define END_SRAM_ADDR     0x20030000
+#define START_FLASH_ADDR  0x08000000
+#define END_FLASH_ADDR    0x08080000
+#endif
+
 #ifdef STM32F7
 // For STM32F765 in BORG
 //  SRAM  (0x20000000 - 0x20080000) (512kb)

Marlin/src/core/boards.h

@@ -207,6 +207,7 @@
 #define BOARD_MALYAN_M200      1801   // STM32C8T6 Libmaple based stm32f1 controller
 #define BOARD_BEAST            1802   // STM32FxxxVxT6 Libmaple based stm32f4 controller
 #define BOARD_STM3R_MINI       1803   // STM32 Libmaple based stm32f1 controller
+#define BOARD_STM32F4          1804   // STM32 STM32GENERIC based STM32F4 controller
 
 //
 // ARM Cortex M7

Marlin/src/pins/pins.h

@@ -359,6 +359,8 @@
   #include "pins_COHESION3D_REMIX.h"
 #elif MB(COHESION3D_MINI)
   #include "pins_COHESION3D_MINI.h"
+#elif MB(STM32F4)
+  #include "pins_STM32F4.h"
 #else
   #error "Unknown MOTHERBOARD value set in Configuration.h"
 #endif

Marlin/src/pins/pins_STM32F4.h

@@ -0,0 +1,204 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#if !defined(STM32F4)
+  #error "Oops!  Make sure you have an STM32F4 board selected from the 'Tools -> Boards' menu."
+#endif
+
+#define DEFAULT_MACHINE_NAME "STM32F407VET6"
+#define BOARD_NAME "Marlin for STM32"
+
+// #define I2C_EEPROM
+
+// #define LARGE_FLASH true
+
+#define E2END 0xFFF // EEPROM end address (4kB)
+
+// Ignore temp readings during develpment.
+// #define BOGUS_TEMPERATURE_FAILSAFE_OVERRIDE
+
+#if E_STEPPERS > 2 || HOTENDS > 2
+  #error "STM32F4 supports up to 2 hotends / E-steppers."
+#endif
+
+#define PORTA 0
+#define PORTB 1
+#define PORTC 2
+#define PORTD 3
+#define PORTE 4
+
+#define _STM32_PIN(_PORT,_PIN) ((_PORT * 16) + _PIN)
+
+//
+// Limit Switches
+//
+#define X_MIN_PIN          _STM32_PIN(PORTE, 0)
+#define X_MAX_PIN          -1
+#define Y_MIN_PIN          _STM32_PIN(PORTE, 1)
+#define Y_MAX_PIN          -1
+#define Z_MIN_PIN          _STM32_PIN(PORTE, 14)
+#define Z_MAX_PIN          -1
+
+//
+// Z Probe (when not Z_MIN_PIN)
+//
+
+// #ifndef Z_MIN_PROBE_PIN
+//   #define Z_MIN_PROBE_PIN  _STM32_PIN(PORTA, 4)
+// #endif
+
+//
+// Steppers
+//
+
+#define X_STEP_PIN         _STM32_PIN(PORTD, 3)
+#define X_DIR_PIN          _STM32_PIN(PORTD, 2)
+#define X_ENABLE_PIN       _STM32_PIN(PORTD, 0)
+// #ifndef X_CS_PIN
+//   #define X_CS_PIN         _STM32_PIN(PORTD, 1)
+// #endif
+
+#define Y_STEP_PIN         _STM32_PIN(PORTE, 11)
+#define Y_DIR_PIN          _STM32_PIN(PORTE, 10)
+#define Y_ENABLE_PIN       _STM32_PIN(PORTE, 13)
+// #ifndef Y_CS_PIN
+//   #define Y_CS_PIN         _STM32_PIN(PORTE, 12)
+// #endif
+
+#define Z_STEP_PIN         _STM32_PIN(PORTD, 6)
+#define Z_DIR_PIN          _STM32_PIN(PORTD, 7)
+#define Z_ENABLE_PIN       _STM32_PIN(PORTD, 4)
+// #ifndef Z_CS_PIN
+//   #define Z_CS_PIN         _STM32_PIN(PORTD, 5)
+// #endif
+
+#define E0_STEP_PIN        _STM32_PIN(PORTB, 5)
+#define E0_DIR_PIN         _STM32_PIN(PORTB, 6)
+#define E0_ENABLE_PIN      _STM32_PIN(PORTB, 3)
+// #ifndef E0_CS_PIN
+//   #define E0_CS_PIN         _STM32_PIN(PORTB, 4)
+// #endif
+
+#define E1_STEP_PIN        _STM32_PIN(PORTE, 4)
+#define E1_DIR_PIN         _STM32_PIN(PORTE, 2)
+#define E1_ENABLE_PIN      _STM32_PIN(PORTE, 3)
+// #ifndef E1_CS_PIN
+//   #define E1_CS_PIN         _STM32_PIN(PORTE, 5)
+// #endif
+
+#define SCK_PIN            _STM32_PIN(PORTA, 5)
+#define MISO_PIN           _STM32_PIN(PORTA, 6)
+#define MOSI_PIN           _STM32_PIN(PORTA, 7)
+
+//
+// Temperature Sensors
+//
+
+#define TEMP_0_PIN         _STM32_PIN(PORTC, 0)   // Analog Input
+#define TEMP_1_PIN         _STM32_PIN(PORTC, 1)   // Analog Input
+#define TEMP_BED_PIN       _STM32_PIN(PORTC, 2)   // Analog Input
+
+//
+// Heaters / Fans
+//
+
+#define HEATER_0_PIN       _STM32_PIN(PORTA, 1)
+#define HEATER_1_PIN       _STM32_PIN(PORTA, 2)
+#define HEATER_BED_PIN     _STM32_PIN(PORTA, 0)
+
+#define FAN_PIN            _STM32_PIN(PORTC, 6)
+#define FAN1_PIN           _STM32_PIN(PORTC, 7)
+#define FAN2_PIN           _STM32_PIN(PORTC, 8)
+
+#define ORIG_E0_AUTO_FAN_PIN  FAN1_PIN // Use this by NOT overriding E0_AUTO_FAN_PIN
+
+//
+// Misc. Functions
+//
+
+//#define CASE_LIGHT_PIN_CI _STM32_PIN(PORTF, 13)  
+//#define CASE_LIGHT_PIN_DO _STM32_PIN(PORTF, 14)  
+//#define NEOPIXEL_PIN      _STM32_PIN(PORTF, 13)
+
+//
+// Prusa i3 MK2 Multi Material Multiplexer Support
+//
+
+// #define E_MUX0_PIN         _STM32_PIN(PORTG, 3)
+// #define E_MUX1_PIN         _STM32_PIN(PORTG, 4)
+
+//
+// Servos
+//
+
+// #define SERVO0_PIN         _STM32_PIN(PORTE, 13)
+// #define SERVO1_PIN         _STM32_PIN(PORTE, 14)
+
+
+#define SDSS               _STM32_PIN(PORTE, 7)
+#define SS_PIN             _STM32_PIN(PORTE, 7)
+#define LED_PIN            _STM32_PIN(PORTB, 7)         //Alive
+#define PS_ON_PIN          _STM32_PIN(PORTA, 10)
+#define KILL_PIN           _STM32_PIN(PORTA, 8)     
+#define PWR_LOSS           _STM32_PIN(PORTA, 4)         //Power loss / nAC_FAULT
+
+//
+// LCD / Controller
+//
+
+#define SD_DETECT_PIN      _STM32_PIN(PORTA, 15)     
+#define BEEPER_PIN         _STM32_PIN(PORTC, 9)      
+#define LCD_PINS_RS        _STM32_PIN(PORTE, 9)      
+#define LCD_PINS_ENABLE    _STM32_PIN(PORTE, 8)      
+#define LCD_PINS_D4        _STM32_PIN(PORTB, 12)     
+#define LCD_PINS_D5        _STM32_PIN(PORTB, 13)     
+#define LCD_PINS_D6        _STM32_PIN(PORTB, 14)     
+#define LCD_PINS_D7        _STM32_PIN(PORTB, 15)     
+#define BTN_EN1            _STM32_PIN(PORTC, 4)      
+#define BTN_EN2            _STM32_PIN(PORTC, 5)      
+#define BTN_ENC            _STM32_PIN(PORTC, 3)      
+
+//
+// Filament runout
+//
+
+#define FIL_RUNOUT_PIN     _STM32_PIN(PORTA, 3)
+
+//
+// ST7920 Delays
+//
+
+#define STM_NOP __asm__("nop\n\t")
+#define STM_DELAY_SHORT { STM_NOP; STM_NOP; STM_NOP; STM_NOP; }
+#define STM_DELAY_LONG  { STM_DELAY_SHORT; STM_DELAY_SHORT; STM_NOP; STM_NOP; }
+
+#ifndef ST7920_DELAY_1
+  #define ST7920_DELAY_1 { STM_DELAY_SHORT; STM_DELAY_SHORT; }
+#endif
+
+#ifndef ST7920_DELAY_2
+  #define ST7920_DELAY_2 { STM_DELAY_SHORT; }
+#endif
+
+#ifndef ST7920_DELAY_3
+  #define ST7920_DELAY_3 { STM_DELAY_LONG; STM_DELAY_LONG; STM_DELAY_LONG; STM_DELAY_LONG; STM_DELAY_LONG; STM_DELAY_LONG; }
+#endif

platformio.ini

@@ -242,6 +242,16 @@ lib_ldf_mode = 1
 src_filter   = ${common.default_src_filter}
 monitor_baud = 250000
 
+[env:STM32F4]
+platform    = ststm32
+framework   = arduino
+board       = disco_f407vg
+build_flags = ${common.build_flags} -DUSE_STM32GENERIC -DMENU_USB_SERIAL -DMENU_SERIAL=SerialUSB
+lib_deps    = ${common.lib_deps}
+lib_ignore  = Adafruit NeoPixel, c1921b4, TMC2130Stepper
+src_filter  = ${common.default_src_filter}
+monitor_baud = 250000
+
 #
 # Teensy++ 2.0
 #