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- /**
- * Marlin 3D Printer Firmware
- *
- * Copyright (c) 2020 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 <https://www.gnu.org/licenses/>.
- *
- */
-
- /**
- * HAL for stm32duino.com based on Libmaple and compatible (STM32F1)
- */
-
- #ifdef __STM32F1__
-
- #include "../../inc/MarlinConfig.h"
- #include "HAL.h"
-
- #include <STM32ADC.h>
-
- // ------------------------
- // Types
- // ------------------------
-
- #define __I
- #define __IO volatile
- typedef struct {
- __I uint32_t CPUID; /*!< Offset: 0x000 (R/ ) CPUID Base Register */
- __IO uint32_t ICSR; /*!< Offset: 0x004 (R/W) Interrupt Control and State Register */
- __IO uint32_t VTOR; /*!< Offset: 0x008 (R/W) Vector Table Offset Register */
- __IO uint32_t AIRCR; /*!< Offset: 0x00C (R/W) Application Interrupt and Reset Control Register */
- __IO uint32_t SCR; /*!< Offset: 0x010 (R/W) System Control Register */
- __IO uint32_t CCR; /*!< Offset: 0x014 (R/W) Configuration Control Register */
- __IO uint8_t SHP[12]; /*!< Offset: 0x018 (R/W) System Handlers Priority Registers (4-7, 8-11, 12-15) */
- __IO uint32_t SHCSR; /*!< Offset: 0x024 (R/W) System Handler Control and State Register */
- __IO uint32_t CFSR; /*!< Offset: 0x028 (R/W) Configurable Fault Status Register */
- __IO uint32_t HFSR; /*!< Offset: 0x02C (R/W) HardFault Status Register */
- __IO uint32_t DFSR; /*!< Offset: 0x030 (R/W) Debug Fault Status Register */
- __IO uint32_t MMFAR; /*!< Offset: 0x034 (R/W) MemManage Fault Address Register */
- __IO uint32_t BFAR; /*!< Offset: 0x038 (R/W) BusFault Address Register */
- __IO uint32_t AFSR; /*!< Offset: 0x03C (R/W) Auxiliary Fault Status Register */
- __I uint32_t PFR[2]; /*!< Offset: 0x040 (R/ ) Processor Feature Register */
- __I uint32_t DFR; /*!< Offset: 0x048 (R/ ) Debug Feature Register */
- __I uint32_t ADR; /*!< Offset: 0x04C (R/ ) Auxiliary Feature Register */
- __I uint32_t MMFR[4]; /*!< Offset: 0x050 (R/ ) Memory Model Feature Register */
- __I uint32_t ISAR[5]; /*!< Offset: 0x060 (R/ ) Instruction Set Attributes Register */
- uint32_t RESERVED0[5];
- __IO uint32_t CPACR; /*!< Offset: 0x088 (R/W) Coprocessor Access Control Register */
- } SCB_Type;
-
- // ------------------------
- // Local defines
- // ------------------------
-
- #define SCS_BASE (0xE000E000UL) /*!< System Control Space Base Address */
- #define SCB_BASE (SCS_BASE + 0x0D00UL) /*!< System Control Block Base Address */
-
- #define SCB ((SCB_Type *) SCB_BASE ) /*!< SCB configuration struct */
-
- /* SCB Application Interrupt and Reset Control Register Definitions */
- #define SCB_AIRCR_VECTKEY_Pos 16 /*!< SCB AIRCR: VECTKEY Position */
- #define SCB_AIRCR_VECTKEY_Msk (0xFFFFUL << SCB_AIRCR_VECTKEY_Pos) /*!< SCB AIRCR: VECTKEY Mask */
-
- #define SCB_AIRCR_PRIGROUP_Pos 8 /*!< SCB AIRCR: PRIGROUP Position */
- #define SCB_AIRCR_PRIGROUP_Msk (7UL << SCB_AIRCR_PRIGROUP_Pos) /*!< SCB AIRCR: PRIGROUP Mask */
-
- // ------------------------
- // Serial ports
- // ------------------------
-
- #if defined(SERIAL_USB) && !HAS_SD_HOST_DRIVE
-
- USBSerial SerialUSB;
- DefaultSerial1 MSerial0(true, SerialUSB);
-
- #if ENABLED(EMERGENCY_PARSER)
- #include "../libmaple/usb/stm32f1/usb_reg_map.h"
- #include "libmaple/usb_cdcacm.h"
- // The original callback is not called (no way to retrieve address).
- // That callback detects a special STM32 reset sequence: this functionality is not essential
- // as M997 achieves the same.
- void my_rx_callback(unsigned int, void*) {
- // max length of 16 is enough to contain all emergency commands
- uint8 buf[16];
-
- //rx is usbSerialPart.endpoints[2]
- uint16 len = usb_get_ep_rx_count(USB_CDCACM_RX_ENDP);
- uint32 total = usb_cdcacm_data_available();
-
- if (len == 0 || total == 0 || !WITHIN(total, len, COUNT(buf)))
- return;
-
- // cannot get character by character due to bug in composite_cdcacm_peek_ex
- len = usb_cdcacm_peek(buf, total);
-
- for (uint32 i = 0; i < len; i++)
- emergency_parser.update(MSerial0.emergency_state, buf[i + total - len]);
- }
- #endif
- #endif
-
- // ------------------------
- // Watchdog Timer
- // ------------------------
-
- #if ENABLED(USE_WATCHDOG)
-
- #include <libmaple/iwdg.h>
-
- void watchdogSetup() {
- // do whatever. don't remove this function.
- }
-
- /**
- * The watchdog clock is 40Khz. So for a 4s or 8s interval use a /256 preescaler and 625 or 1250 reload value (counts down to 0).
- */
- #define STM32F1_WD_RELOAD TERN(WATCHDOG_DURATION_8S, 1250, 625) // 4 or 8 second timeout
-
- /**
- * @brief Initialize the independent hardware watchdog.
- *
- * @return No return
- *
- * @details The watchdog clock is 40Khz. So for a 4s or 8s interval use a /256 preescaler and 625 or 1250 reload value (counts down to 0).
- */
- void MarlinHAL::watchdog_init() {
- #if DISABLED(DISABLE_WATCHDOG_INIT)
- iwdg_init(IWDG_PRE_256, STM32F1_WD_RELOAD);
- #endif
- }
-
- // Reset watchdog. MUST be called every 4 or 8 seconds after the
- // first watchdog_init or the STM32F1 will reset.
- void MarlinHAL::watchdog_refresh() {
- #if DISABLED(PINS_DEBUGGING) && PIN_EXISTS(LED)
- TOGGLE(LED_PIN); // heartbeat indicator
- #endif
- iwdg_feed();
- }
-
- #endif // USE_WATCHDOG
-
- // ------------------------
- // ADC
- // ------------------------
-
- // Watch out for recursion here! Our pin_t is signed, so pass through to Arduino -> analogRead(uint8_t)
-
- uint16_t analogRead(const pin_t pin) {
- const bool is_analog = _GET_MODE(pin) == GPIO_INPUT_ANALOG;
- return is_analog ? analogRead(uint8_t(pin)) : 0;
- }
-
- // Wrapper to maple unprotected analogWrite
- void analogWrite(const pin_t pin, int pwm_val8) {
- if (PWM_PIN(pin)) analogWrite(uint8_t(pin), pwm_val8);
- }
-
- uint16_t MarlinHAL::adc_result;
-
- // ------------------------
- // Private functions
- // ------------------------
-
- static void NVIC_SetPriorityGrouping(uint32_t PriorityGroup) {
- uint32_t reg_value;
- uint32_t PriorityGroupTmp = (PriorityGroup & (uint32_t)0x07); // only values 0..7 are used
-
- reg_value = SCB->AIRCR; // read old register configuration
- reg_value &= ~(SCB_AIRCR_VECTKEY_Msk | SCB_AIRCR_PRIGROUP_Msk); // clear bits to change
- reg_value = (reg_value |
- ((uint32_t)0x5FA << SCB_AIRCR_VECTKEY_Pos) |
- (PriorityGroupTmp << 8)); // Insert write key & priority group
- SCB->AIRCR = reg_value;
- }
-
- // ------------------------
- // Public functions
- // ------------------------
-
- void flashFirmware(const int16_t) { hal.reboot(); }
-
- //
- // Leave PA11/PA12 intact if USBSerial is not used
- //
- #if SERIAL_USB
- namespace wirish { namespace priv {
- #if SERIAL_PORT > 0
- #if SERIAL_PORT2
- #if SERIAL_PORT2 > 0
- void board_setup_usb() {}
- #endif
- #else
- void board_setup_usb() {}
- #endif
- #endif
- } }
- #endif
-
- TERN_(POSTMORTEM_DEBUGGING, extern void install_min_serial());
-
- // ------------------------
- // MarlinHAL class
- // ------------------------
-
- void MarlinHAL::init() {
- NVIC_SetPriorityGrouping(0x3);
- #if PIN_EXISTS(LED)
- OUT_WRITE(LED_PIN, LOW);
- #endif
- #if HAS_SD_HOST_DRIVE
- MSC_SD_init();
- #elif BOTH(SERIAL_USB, EMERGENCY_PARSER)
- usb_cdcacm_set_hooks(USB_CDCACM_HOOK_RX, my_rx_callback);
- #endif
- #if PIN_EXISTS(USB_CONNECT)
- OUT_WRITE(USB_CONNECT_PIN, !USB_CONNECT_INVERTING); // USB clear connection
- delay(1000); // Give OS time to notice
- WRITE(USB_CONNECT_PIN, USB_CONNECT_INVERTING);
- #endif
- TERN_(POSTMORTEM_DEBUGGING, install_min_serial()); // Install the minimal serial handler
- }
-
- // HAL idle task
- void MarlinHAL::idletask() {
- #if HAS_SHARED_MEDIA
- // If Marlin is using the SD card we need to lock it to prevent access from
- // a PC via USB.
- // Other HALs use IS_SD_PRINTING() and IS_SD_FILE_OPEN() to check for access but
- // this will not reliably detect delete operations. To be safe we will lock
- // the disk if Marlin has it mounted. Unfortunately there is currently no way
- // to unmount the disk from the LCD menu.
- // if (IS_SD_PRINTING() || IS_SD_FILE_OPEN())
- /* copy from lpc1768 framework, should be fixed later for process HAS_SD_HOST_DRIVE*/
- // process USB mass storage device class loop
- MarlinMSC.loop();
- #endif
- }
-
- void MarlinHAL::reboot() { nvic_sys_reset(); }
-
- // ------------------------
- // Free Memory Accessor
- // ------------------------
-
- extern "C" {
- extern unsigned int _ebss; // end of bss section
- }
-
- /**
- * TODO: Change this to correct it for libmaple
- */
-
- // 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
- // ------------------------
-
- enum ADCIndex : uint8_t {
- OPTITEM(HAS_TEMP_ADC_0, TEMP_0)
- OPTITEM(HAS_TEMP_ADC_1, TEMP_1)
- OPTITEM(HAS_TEMP_ADC_2, TEMP_2)
- OPTITEM(HAS_TEMP_ADC_3, TEMP_3)
- OPTITEM(HAS_TEMP_ADC_4, TEMP_4)
- OPTITEM(HAS_TEMP_ADC_5, TEMP_5)
- OPTITEM(HAS_TEMP_ADC_6, TEMP_6)
- OPTITEM(HAS_TEMP_ADC_7, TEMP_7)
- OPTITEM(HAS_HEATED_BED, TEMP_BED)
- OPTITEM(HAS_TEMP_CHAMBER, TEMP_CHAMBER)
- OPTITEM(HAS_TEMP_ADC_PROBE, TEMP_PROBE)
- OPTITEM(HAS_TEMP_COOLER, TEMP_COOLER)
- OPTITEM(HAS_TEMP_BOARD, TEMP_BOARD)
- OPTITEM(FILAMENT_WIDTH_SENSOR, FILWIDTH)
- OPTITEM(HAS_ADC_BUTTONS, ADC_KEY)
- OPTITEM(HAS_JOY_ADC_X, JOY_X)
- OPTITEM(HAS_JOY_ADC_Y, JOY_Y)
- OPTITEM(HAS_JOY_ADC_Z, JOY_Z)
- OPTITEM(POWER_MONITOR_CURRENT, POWERMON_CURRENT)
- OPTITEM(POWER_MONITOR_VOLTAGE, POWERMON_VOLTS)
- ADC_COUNT
- };
-
- static uint16_t adc_results[ADC_COUNT];
-
- // Init the AD in continuous capture mode
- void MarlinHAL::adc_init() {
- static const uint8_t adc_pins[] = {
- OPTITEM(HAS_TEMP_ADC_0, TEMP_0_PIN)
- OPTITEM(HAS_TEMP_ADC_1, TEMP_1_PIN)
- OPTITEM(HAS_TEMP_ADC_2, TEMP_2_PIN)
- OPTITEM(HAS_TEMP_ADC_3, TEMP_3_PIN)
- OPTITEM(HAS_TEMP_ADC_4, TEMP_4_PIN)
- OPTITEM(HAS_TEMP_ADC_5, TEMP_5_PIN)
- OPTITEM(HAS_TEMP_ADC_6, TEMP_6_PIN)
- OPTITEM(HAS_TEMP_ADC_7, TEMP_7_PIN)
- OPTITEM(HAS_HEATED_BED, TEMP_BED_PIN)
- OPTITEM(HAS_TEMP_CHAMBER, TEMP_CHAMBER_PIN)
- OPTITEM(HAS_TEMP_ADC_PROBE, TEMP_PROBE_PIN)
- OPTITEM(HAS_TEMP_COOLER, TEMP_COOLER_PIN)
- OPTITEM(HAS_TEMP_BOARD, TEMP_BOARD_PIN)
- OPTITEM(FILAMENT_WIDTH_SENSOR, FILWIDTH_PIN)
- OPTITEM(HAS_ADC_BUTTONS, ADC_KEYPAD_PIN)
- OPTITEM(HAS_JOY_ADC_X, JOY_X_PIN)
- OPTITEM(HAS_JOY_ADC_Y, JOY_Y_PIN)
- OPTITEM(HAS_JOY_ADC_Z, JOY_Z_PIN)
- OPTITEM(POWER_MONITOR_CURRENT, POWER_MONITOR_CURRENT_PIN)
- OPTITEM(POWER_MONITOR_VOLTAGE, POWER_MONITOR_VOLTAGE_PIN)
- };
- static STM32ADC adc(ADC1);
- // configure the ADC
- adc.calibrate();
- adc.setSampleRate((F_CPU > 72000000) ? ADC_SMPR_71_5 : ADC_SMPR_41_5); // 71.5 or 41.5 ADC cycles
- adc.setPins((uint8_t *)adc_pins, ADC_COUNT);
- adc.setDMA(adc_results, uint16_t(ADC_COUNT), uint32_t(DMA_MINC_MODE | DMA_CIRC_MODE), nullptr);
- adc.setScanMode();
- adc.setContinuous();
- adc.startConversion();
- }
-
- void MarlinHAL::adc_start(const pin_t pin) {
- #define __TCASE(N,I) case N: pin_index = I; break;
- #define _TCASE(C,N,I) TERN_(C, __TCASE(N, I))
- ADCIndex pin_index;
- switch (pin) {
- default: return;
- _TCASE(HAS_TEMP_ADC_0, TEMP_0_PIN, TEMP_0)
- _TCASE(HAS_TEMP_ADC_1, TEMP_1_PIN, TEMP_1)
- _TCASE(HAS_TEMP_ADC_2, TEMP_2_PIN, TEMP_2)
- _TCASE(HAS_TEMP_ADC_3, TEMP_3_PIN, TEMP_3)
- _TCASE(HAS_TEMP_ADC_4, TEMP_4_PIN, TEMP_4)
- _TCASE(HAS_TEMP_ADC_5, TEMP_5_PIN, TEMP_5)
- _TCASE(HAS_TEMP_ADC_6, TEMP_6_PIN, TEMP_6)
- _TCASE(HAS_TEMP_ADC_7, TEMP_7_PIN, TEMP_7)
- _TCASE(HAS_HEATED_BED, TEMP_BED_PIN, TEMP_BED)
- _TCASE(HAS_TEMP_CHAMBER, TEMP_CHAMBER_PIN, TEMP_CHAMBER)
- _TCASE(HAS_TEMP_ADC_PROBE, TEMP_PROBE_PIN, TEMP_PROBE)
- _TCASE(HAS_TEMP_COOLER, TEMP_COOLER_PIN, TEMP_COOLER)
- _TCASE(HAS_TEMP_BOARD, TEMP_BOARD_PIN, TEMP_BOARD)
- _TCASE(HAS_JOY_ADC_X, JOY_X_PIN, JOY_X)
- _TCASE(HAS_JOY_ADC_Y, JOY_Y_PIN, JOY_Y)
- _TCASE(HAS_JOY_ADC_Z, JOY_Z_PIN, JOY_Z)
- _TCASE(FILAMENT_WIDTH_SENSOR, FILWIDTH_PIN, FILWIDTH)
- _TCASE(HAS_ADC_BUTTONS, ADC_KEYPAD_PIN, ADC_KEY)
- _TCASE(POWER_MONITOR_CURRENT, POWER_MONITOR_CURRENT_PIN, POWERMON_CURRENT)
- _TCASE(POWER_MONITOR_VOLTAGE, POWER_MONITOR_VOLTAGE_PIN, POWERMON_VOLTS)
- }
- adc_result = (adc_results[(int)pin_index] & 0xFFF) >> (12 - HAL_ADC_RESOLUTION); // shift out unused bits
- }
-
- #endif // __STM32F1__
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