Enable RRDFGSC on Due

Marlin/src/HAL/HAL_DUE/u8g_com_HAL_DUE_st7920_sw_spi.cpp

@@ -0,0 +1,212 @@
+/**
+ * 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/>.
+ *
+ */
+
+/*
+
+  based on u8g_com_st7920_hw_spi.c
+
+  Universal 8bit Graphics Library
+
+  Copyright (c) 2011, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification,
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list
+    of conditions and the following disclaimer.
+
+  * 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.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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.
+
+*/
+
+#ifdef __SAM3X8E__
+
+  #include <U8glib.h>
+  #include <Arduino.h>
+  #include "../../core/macros.h"
+
+
+  void u8g_SetPIOutput_DUE(u8g_t *u8g, uint8_t pin_index) {
+     PIO_Configure(g_APinDescription[u8g->pin_list[pin_index]].pPort, PIO_OUTPUT_1,
+       g_APinDescription[u8g->pin_list[pin_index]].ulPin, g_APinDescription[u8g->pin_list[pin_index]].ulPinConfiguration);  // OUTPUT
+  }
+
+
+  void u8g_SetPILevel_DUE(u8g_t *u8g, uint8_t pin_index, uint8_t level) {
+    volatile Pio* port = g_APinDescription[u8g->pin_list[pin_index]].pPort;
+    uint32_t mask = g_APinDescription[u8g->pin_list[pin_index]].ulPin;
+    if (level) port->PIO_SODR = mask;
+    else port->PIO_CODR = mask;
+  }
+
+
+#define nop() __asm__ __volatile__("nop;\n\t":::)
+
+void __delay_4cycles(uint32_t cy) __attribute__ ((weak));
+FORCE_INLINE void __delay_4cycles(uint32_t cy) { // +1 cycle
+  #if ARCH_PIPELINE_RELOAD_CYCLES<2
+    #define EXTRA_NOP_CYCLES "nop"
+  #else
+    #define EXTRA_NOP_CYCLES ""
+  #endif
+
+  __asm__ __volatile__(
+    ".syntax unified" "\n\t" // is to prevent CM0,CM1 non-unified syntax
+
+    "loop%=:" "\n\t"
+    " subs %[cnt],#1" "\n\t"
+    EXTRA_NOP_CYCLES "\n\t"
+    " bne loop%=" "\n\t"
+    : [cnt]"+r"(cy) // output: +r means input+output
+    : // input:
+    : "cc" // clobbers:
+  );
+}
+
+  Pio *SCK_pPio, *MOSI_pPio;
+  uint32_t SCK_dwMask, MOSI_dwMask;
+
+  static void spiSend_sw_DUE(uint8_t val)  // 800KHz
+  {
+    for (uint8_t i = 0; i < 8; i++) {
+      if (val & 0x80)
+        MOSI_pPio->PIO_SODR = MOSI_dwMask;
+      else
+        MOSI_pPio->PIO_CODR = MOSI_dwMask;
+      val = val << 1;
+      __delay_4cycles(2);
+      SCK_pPio->PIO_SODR = SCK_dwMask;
+      __delay_4cycles(22);
+      SCK_pPio->PIO_CODR = SCK_dwMask;
+    }
+  }
+
+  static uint8_t rs_last_state = 255;
+
+  static void u8g_com_DUE_st7920_write_byte_sw_spi(uint8_t rs, uint8_t val)
+  {
+    uint8_t i;
+
+    if ( rs != rs_last_state) {  // time to send a command/data byte
+      rs_last_state = rs;
+
+      if ( rs == 0 )
+        /* command */
+        spiSend_sw_DUE(0x0f8);
+      else
+         /* data */
+        spiSend_sw_DUE(0x0fa);
+
+      for( i = 0; i < 4; i++ )   // give the controller some time to process the data
+        u8g_10MicroDelay();      // 2 is bad, 3 is OK, 4 is safe
+    }
+
+    spiSend_sw_DUE(val & 0x0f0);
+    spiSend_sw_DUE(val << 4);
+  }
+
+
+  uint8_t u8g_com_HAL_DUE_ST7920_sw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr)
+  {
+    switch(msg)
+    {
+      case U8G_COM_MSG_INIT:
+        SCK_pPio = g_APinDescription[u8g->pin_list[U8G_PI_SCK]].pPort;
+        SCK_dwMask = g_APinDescription[u8g->pin_list[U8G_PI_SCK]].ulPin;
+        MOSI_pPio = g_APinDescription[u8g->pin_list[U8G_PI_MOSI]].pPort;
+        MOSI_dwMask = g_APinDescription[u8g->pin_list[U8G_PI_MOSI]].ulPin;
+
+        u8g_SetPILevel_DUE(u8g, U8G_PI_CS, 0);
+        u8g_SetPIOutput_DUE(u8g, U8G_PI_CS);
+        u8g_SetPILevel_DUE(u8g, U8G_PI_SCK, 0);
+        u8g_SetPIOutput_DUE(u8g, U8G_PI_SCK);
+        u8g_SetPILevel_DUE(u8g, U8G_PI_MOSI, 0);
+        u8g_SetPILevel_DUE(u8g, U8G_PI_MOSI, 1);
+        u8g_SetPIOutput_DUE(u8g, U8G_PI_MOSI);
+        u8g_Delay(5);
+        u8g->pin_list[U8G_PI_A0_STATE] = 0;       /* inital RS state: command mode */
+        break;
+
+      case U8G_COM_MSG_STOP:
+        break;
+
+      case U8G_COM_MSG_RESET:
+         if (U8G_PIN_NONE != u8g->pin_list[U8G_PI_RESET]) u8g_SetPILevel_DUE(u8g, U8G_PI_RESET, arg_val);
+        break;
+
+      case U8G_COM_MSG_ADDRESS:                     /* define cmd (arg_val = 0) or data mode (arg_val = 1) */
+        u8g->pin_list[U8G_PI_A0_STATE] = arg_val;
+        break;
+
+      case U8G_COM_MSG_CHIP_SELECT:
+        if (U8G_PIN_NONE != u8g->pin_list[U8G_PI_CS])
+          u8g_SetPILevel_DUE(u8g, U8G_PI_CS, arg_val);  //note: the st7920 has an active high chip select
+        break;
+
+      case U8G_COM_MSG_WRITE_BYTE:
+
+        u8g_com_DUE_st7920_write_byte_sw_spi(u8g->pin_list[U8G_PI_A0_STATE], arg_val);
+        break;
+
+      case U8G_COM_MSG_WRITE_SEQ:
+        {
+          uint8_t *ptr = (uint8_t*) arg_ptr;
+          while( arg_val > 0 )
+          {
+            u8g_com_DUE_st7920_write_byte_sw_spi(u8g->pin_list[U8G_PI_A0_STATE], *ptr++);
+            arg_val--;
+          }
+        }
+        break;
+
+        case U8G_COM_MSG_WRITE_SEQ_P:
+        {
+          uint8_t *ptr = (uint8_t*) arg_ptr;
+          while( arg_val > 0 )
+          {
+            u8g_com_DUE_st7920_write_byte_sw_spi(u8g->pin_list[U8G_PI_A0_STATE], *ptr++);
+            arg_val--;
+          }
+        }
+        break;
+    }
+    return 1;
+  }
+#pragma GCC reset_options
+#endif  //ARDUINO_ARCH_SAM

Marlin/src/lcd/dogm/HAL_LCD_class_defines.h

@@ -62,14 +62,6 @@ class U8GLIB_ST7920_128X64_RRD : public U8GLIB
 };
 
 
-extern u8g_dev_t u8g_dev_st7920_128x64_custom_sw_spi;
-class U8GLIB_ST7920_128X64_CUSTOM_SW_SPI : public U8GLIB {
-  public:
-    U8GLIB_ST7920_128X64_CUSTOM_SW_SPI()
-    : U8GLIB(&u8g_dev_st7920_128x64_custom_sw_spi)
-    {  }
-};
-
 extern u8g_dev_t u8g_dev_sh1106_128x64_2x_i2c_2_wire;
 class U8GLIB_SH1106_128X64_2X_I2C_2_WIRE : public U8GLIB {
   public:

Marlin/src/lcd/dogm/HAL_LCD_com_defines.h

@@ -31,8 +31,13 @@
   uint8_t u8g_com_arduino_hw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr);
   #define U8G_COM_HAL_HW_SPI_FN u8g_com_arduino_hw_spi_fn
 
-  uint8_t u8g_com_arduino_st7920_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr);
-  #define U8G_COM_ST7920_HAL_SW_SPI u8g_com_arduino_st7920_spi_fn
+  #ifdef __SAM3X8E__
+    uint8_t u8g_com_HAL_DUE_ST7920_sw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr);
+    #define U8G_COM_ST7920_HAL_SW_SPI u8g_com_HAL_DUE_ST7920_sw_spi_fn
+  #else
+    uint8_t u8g_com_arduino_st7920_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr);
+    #define U8G_COM_ST7920_HAL_SW_SPI u8g_com_arduino_st7920_spi_fn
+  #endif
 
   uint8_t u8g_com_arduino_st7920_hw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr);
   #define U8G_COM_ST7920_HAL_HW_SPI u8g_com_arduino_st7920_hw_spi_fn

Marlin/src/lcd/dogm/u8g_dev_st7920_128_64_sw_spi.cpp

@@ -1,276 +0,0 @@
-/**
- * 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/>.
- *
- */
-
-/*
- * PLEASE NOTE >>>
- *  We need our custom implementation for Software SPI, as the default implementation
- * of U8GLIB, when running in an ARM based board, is too fast and the display will not
- * recognize commands and/or data at such speeds. This implementation autoderives the
- * required delays to get the maximum possible performance by using the F_CPU macro that
- * specifies the CPU speed. According to the ST7920 datasheet, the maximum SCLK is 1MHz.
- */
-
-#ifndef ULCDST7920_SWSPI_H
-#define ULCDST7920_SWSPI_H
-
-#include "../../inc/MarlinConfig.h"
-
-#if ENABLED(U8GLIB_ST7920)
-
-#include <U8glib.h>
-#include "HAL_LCD_com_defines.h"
-
-#define ST7920_CLK_PIN  LCD_PINS_D4
-#define ST7920_DAT_PIN  LCD_PINS_ENABLE
-#define ST7920_CS_PIN   LCD_PINS_RS
-
-//#define PAGE_HEIGHT 8   //128 byte framebuffer
-#define PAGE_HEIGHT 16    //256 byte framebuffer
-//#define PAGE_HEIGHT 32  //512 byte framebuffer
-
-#define LCD_PIXEL_WIDTH 128
-#define LCD_PIXEL_HEIGHT 64
-
-//set optimization so ARDUINO optimizes this file
-#pragma GCC optimize (3)
-
-/* ---------------- Delay Cycles routine -------------- */
-
-#ifdef __arm__
-/* https://blueprints.launchpad.net/gcc-arm-embedded/+spec/delay-cycles */
-
-#define nop() __asm__ __volatile__("nop;\n\t":::)
-
-FORCE_INLINE static void __delay_4cycles(uint32_t cy) { // +1 cycle
-  #if ARCH_PIPELINE_RELOAD_CYCLES<2
-    #define EXTRA_NOP_CYCLES "nop"
-  #else
-    #define EXTRA_NOP_CYCLES ""
-  #endif
-
-  __asm__ __volatile__(
-    ".syntax unified" "\n\t" // is to prevent CM0,CM1 non-unified syntax
-
-    "loop%=:" "\n\t"
-    " subs %[cnt],#1" "\n\t"
-    EXTRA_NOP_CYCLES "\n\t"
-    " bne loop%=" "\n\t"
-    : [cnt]"+r"(cy) // output: +r means input+output
-    : // input:
-    : "cc" // clobbers:
-  );
-}
-
-FORCE_INLINE static void DELAY_CYCLES(uint32_t x) {
-
-  if (__builtin_constant_p(x)) {
-
-    #define MAXNOPS 4
-
-    if (x <= (MAXNOPS)) {
-      switch(x) { case 4: nop(); case 3: nop(); case 2: nop(); case 1: nop(); }
-    }
-    else { // because of +1 cycle inside delay_4cycles
-      const uint32_t rem = (x - 1) % (MAXNOPS);
-      switch(rem) { case 3: nop(); case 2: nop(); case 1: nop(); }
-      if ((x = (x - 1) / (MAXNOPS)))
-        __delay_4cycles(x); // if need more then 4 nop loop is more optimal
-    }
-  }
-  else
-    __delay_4cycles(x / 4);
-  }
-
-#ifdef __TEST_DELAY
-
-  void calibrateTimer() {
-
-    // Use DWT to calibrate cycles
-    uint32_t count = 0;
-
-    // addresses of registers
-    volatile uint32_t *DWT_CONTROL = (uint32_t *)0xE0001000,
-                      *DWT_CYCCNT = (uint32_t *)0xE0001004,
-                      *DEMCR = (uint32_t *)0xE000EDFC;
-
-    cli();
-
-    // enable the use DWT
-    *DEMCR = *DEMCR | 0x01000000;
-
-    // Reset cycle counter
-    *DWT_CYCCNT = 0;
-
-    // enable cycle counter
-    *DWT_CONTROL = *DWT_CONTROL | 1;
-
-    // Perform a delay of 10000 cycles
-    DELAY_CYCLES(10000U);
-
-    // number of cycles stored in count variable
-    count = *DWT_CYCCNT;
-
-    sei();
-
-    SERIAL_ECHO_START();
-    SERIAL_ECHOLNPAIR("calibrated Cycles: ", (int)count);
-  }
-
-#endif // __TEST_DELAY
-
-#elif defined(__AVR__)
-  #define DELAY_CYCLES(cycles) __builtin_avr_delay_cycles(cycles)
-#else
-  #error "DELAY_CYCLES not implemented for this architecture."
-#endif
-
-/* ---------------- Delay in nanoseconds and in microseconds */
-
-#define DELAY_NS(x) DELAY_CYCLES( (x) * (F_CPU/1000000) / 1000)
-#define DELAY_US(x) DELAY_CYCLES( (x) * (F_CPU/1000000))
-
-/* ---------------- ST7920 commands ------------------------ */
-
-#ifdef __arm__
-
-  /* ARM: Plain implementation is more than enough */
-  static void ST7920_SWSPI_SND_8BIT(uint8_t val) {
-    uint8_t n = 8;
-    do {
-      WRITE(ST7920_CLK_PIN, LOW);
-      WRITE(ST7920_DAT_PIN, val & 0x80);
-      DELAY_NS(700); /* RE-ARM requires 700ns to be stable, RAMPS4DUE works with 500ns */
-      WRITE(ST7920_CLK_PIN, HIGH);
-      DELAY_NS(700); /* RE-ARM requires 700ns to be stable, RAMPS4DUE works with 500ns */
-      val <<= 1;
-    } while (--n);
-  }
-
-#else // !ARM
-
-  /* AVR: Unrolling loop makes sense */
-  #define ST7920_SND_BIT(nr)              \
-    WRITE(ST7920_CLK_PIN, LOW);           \
-    WRITE(ST7920_DAT_PIN, TEST(val, nr)); \
-    DELAY_NS(700);                        \
-    WRITE(ST7920_CLK_PIN, HIGH);          \
-    DELAY_NS(700);
-
-  static void ST7920_SWSPI_SND_8BIT(const uint8_t val) {
-    ST7920_SND_BIT(7); // MSBit
-    ST7920_SND_BIT(6); //
-    ST7920_SND_BIT(5); //
-    ST7920_SND_BIT(4); //
-    ST7920_SND_BIT(3); //
-    ST7920_SND_BIT(2); //
-    ST7920_SND_BIT(1); //
-    ST7920_SND_BIT(0); // LSBit
-  }
-
-#endif // !ARM
-
-#define ST7920_CS()              { WRITE(ST7920_CS_PIN,1); DELAY_NS(200); }
-#define ST7920_NCS()             { WRITE(ST7920_CS_PIN,0); }
-#define ST7920_SET_CMD()         { ST7920_SWSPI_SND_8BIT(0xF8); DELAY_US(3); }
-#define ST7920_SET_DAT()         { ST7920_SWSPI_SND_8BIT(0xFA); DELAY_US(3); }
-#define ST7920_WRITE_BYTE(a)     { ST7920_SWSPI_SND_8BIT((uint8_t)((a)&0xF0u)); ST7920_SWSPI_SND_8BIT((uint8_t)((a)<<4u)); DELAY_US(3); }
-#define ST7920_WRITE_BYTES(p,l)  { for (uint8_t i = l + 1; --i;) { ST7920_SWSPI_SND_8BIT(*p&0xF0); ST7920_SWSPI_SND_8BIT(*p<<4); p++; } DELAY_US(3); }
-
-
-uint8_t u8g_dev_st7920_custom_sw_spi_128x64_fn(u8g_t *u8g, u8g_dev_t *dev, uint8_t msg, void *arg) {
-
-  uint8_t i, y;
-  switch (msg) {
-    case U8G_DEV_MSG_INIT: {
-
-      /* Set to output and write */
-      OUT_WRITE(ST7920_CS_PIN, LOW);
-      OUT_WRITE(ST7920_DAT_PIN, LOW);
-      OUT_WRITE(ST7920_CLK_PIN, HIGH);
-
-      ST7920_CS();
-      u8g_Delay(120);                //initial delay for boot up
-
-      ST7920_SET_CMD();
-      ST7920_WRITE_BYTE(0x08);       //display off, cursor+blink off
-      ST7920_WRITE_BYTE(0x01);       //clear CGRAM ram
-      u8g_Delay(15);                 //delay for CGRAM clear
-      ST7920_WRITE_BYTE(0x3E);       //extended mode + GDRAM active
-      for (y = 0; y < (LCD_PIXEL_HEIGHT) / 2; y++) { //clear GDRAM
-        ST7920_WRITE_BYTE(0x80 | y); //set y
-        ST7920_WRITE_BYTE(0x80);     //set x = 0
-        ST7920_SET_DAT();
-        for (i = 0; i < 2 * (LCD_PIXEL_WIDTH) / 8; i++) //2x width clears both segments
-          ST7920_WRITE_BYTE(0);
-        ST7920_SET_CMD();
-      }
-
-      ST7920_WRITE_BYTE(0x0C);       //display on, cursor+blink off
-      ST7920_NCS();
-    }
-    break;
-
-    case U8G_DEV_MSG_STOP:
-      break;
-
-    case U8G_DEV_MSG_PAGE_NEXT: {
-      u8g_pb_t* pb = (u8g_pb_t*)(dev->dev_mem);
-      y = pb->p.page_y0;
-      uint8_t* ptr = (uint8_t*)pb->buf;
-
-      ST7920_CS();
-      for (i = 0; i < PAGE_HEIGHT; i ++) {
-        ST7920_SET_CMD();
-        if (y < 32) {
-          ST7920_WRITE_BYTE(0x80 | y);   //y
-          ST7920_WRITE_BYTE(0x80);       //x=0
-        }
-        else {
-          ST7920_WRITE_BYTE(0x80 | (y - 32)); //y
-          ST7920_WRITE_BYTE(0x80 | 8);   //x=64
-        }
-        ST7920_SET_DAT();
-        ST7920_WRITE_BYTES(ptr, (LCD_PIXEL_WIDTH) / 8); //ptr is incremented inside of macro
-        y++;
-      }
-
-      ST7920_NCS();
-    }
-    break;
-  }
-  #if PAGE_HEIGHT == 8
-    return u8g_dev_pb8h1_base_fn(u8g, dev, msg, arg);
-  #elif PAGE_HEIGHT == 16
-    return u8g_dev_pb16h1_base_fn(u8g, dev, msg, arg);
-  #else
-    return u8g_dev_pb32h1_base_fn(u8g, dev, msg, arg);
-  #endif
-}
-
-static uint8_t   u8g_dev_st7920_128x64_custom_sw_spi_buf[(LCD_PIXEL_WIDTH) * (PAGE_HEIGHT) / 8] U8G_NOCOMMON;
-static u8g_pb_t  u8g_dev_st7920_128x64_custom_sw_spi_pb = {{PAGE_HEIGHT, LCD_PIXEL_HEIGHT, 0, 0, 0}, LCD_PIXEL_WIDTH, u8g_dev_st7920_128x64_custom_sw_spi_buf};
-u8g_dev_t u8g_dev_st7920_128x64_custom_sw_spi = {u8g_dev_st7920_custom_sw_spi_128x64_fn, &u8g_dev_st7920_128x64_custom_sw_spi_pb, &u8g_com_null_fn};
-
-#pragma GCC reset_options
-
-#endif // U8GLIB_ST7920
-#endif // ULCDST7920_SWSPI_H

Marlin/src/lcd/dogm/u8g_dev_st7920_128x64_HAL.cpp

@@ -199,7 +199,7 @@ U8G_PB_DEV(u8g_dev_st7920_128x64_HAL_hw_spi, WIDTH, HEIGHT, PAGE_HEIGHT, u8g_dev
 u8g_dev_t u8g_dev_st7920_128x64_HAL_4x_hw_spi = { u8g_dev_st7920_128x64_HAL_4x_fn, &u8g_dev_st7920_128x64_HAL_4x_pb, U8G_COM_ST7920_HAL_HW_SPI };
 
 
-#ifdef U8G_HAL_LINKS
+#if defined(U8G_HAL_LINKS) || defined(__SAM3X8E__)
   // Also use this device for HAL version of rrd class. This results in the same device being used
   // for the ST7920 for HAL systems no matter what is selected in ultralcd_impl_DOGM.h.
   u8g_dev_t u8g_dev_st7920_128x64_rrd_sw_spi = { u8g_dev_st7920_128x64_HAL_4x_fn, &u8g_dev_st7920_128x64_HAL_4x_pb, U8G_COM_ST7920_HAL_SW_SPI };

Marlin/src/lcd/dogm/ultralcd_st7920_u8glib_rrd_AVR.cpp

@@ -27,7 +27,7 @@
 
 #if ENABLED(U8GLIB_ST7920)
 
-#ifndef U8G_HAL_LINKS
+#if !(defined(U8G_HAL_LINKS) || defined(__SAM3X8E__))
 
 #define ST7920_CLK_PIN  LCD_PINS_D4
 #define ST7920_DAT_PIN  LCD_PINS_ENABLE

Marlin/src/lcd/ultralcd_impl_DOGM.h

@@ -169,9 +169,6 @@
   #else
     U8GLIB_ST7920_128X64_4X u8g(LCD_PINS_RS); // 2 stripes, HW SPI (shared with SD card)
   #endif
-#elif ENABLED(U8GLIB_ST7920) && defined(__arm__)
-  // RepRap Discount Full Graphics Smart Controller on an ARM target
-    U8GLIB_ST7920_128X64_CUSTOM_SW_SPI u8g;
 
 #elif ENABLED(U8GLIB_ST7920)
   // RepRap Discount Full Graphics Smart Controller
@@ -190,6 +187,7 @@
   // Based on the Adafruit ST7565 (http://www.adafruit.com/products/250)
     //U8GLIB_LM6059 u8g(DOGLCD_CS, DOGLCD_A0);  // 8 stripes
     U8GLIB_LM6059_2X u8g(DOGLCD_CS, DOGLCD_A0); // 4 stripes
+    
 #elif ENABLED(U8GLIB_ST7565_64128N)
   // The MaKrPanel, Mini Viki, and Viki 2.0, ST7565 controller
     //U8GLIB_64128N_2X_HAL u8g(DOGLCD_CS, DOGLCD_A0);  // using HW-SPI

platformio.ini

@@ -95,6 +95,7 @@ framework   = arduino
 board       = due
 build_flags = ${common.build_flags} -I $BUILDSRC_DIR
 lib_deps    = ${common.lib_deps}
+lib_ignore  = TMC26XStepper
 src_filter  = ${common.default_src_filter}
 
 #