SKRmini support for Fysetc Mini Panel (#14319)

Marlin/src/HAL/HAL_STM32F1/u8g_com_stm32duino_swspi.cpp

+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2019 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 __STM32F1__
+
+#include "../../inc/MarlinConfig.h"
+
+#if HAS_GRAPHICAL_LCD
+
+#include "HAL.h"
+#include <U8glib.h>
+
+#undef SPI_SPEED
+#define SPI_SPEED 0 // Fastest
+//#define SPI_SPEED 2 // Slower
+
+static uint8_t SPI_speed = SPI_SPEED;
+
+static inline uint8_t swSpiTransfer_mode_0(uint8_t b, const uint8_t spi_speed, const pin_t miso_pin=-1) {
+  for (uint8_t i = 0; i < 8; i++) {
+    if (spi_speed == 0) {
+      WRITE(DOGLCD_MOSI, !!(b & 0x80));
+      WRITE(DOGLCD_SCK, HIGH);
+      b <<= 1;
+      if (miso_pin >= 0 && READ(miso_pin)) b |= 1;
+      WRITE(DOGLCD_SCK, LOW);
+    }
+    else {
+      const uint8_t state = (b & 0x80) ? HIGH : LOW;
+      for (uint8_t j = 0; j < spi_speed; j++)
+        WRITE(DOGLCD_MOSI, state);
+
+      for (uint8_t j = 0; j < spi_speed + (miso_pin >= 0 ? 0 : 1); j++)
+        WRITE(DOGLCD_SCK, HIGH);
+
+      b <<= 1;
+      if (miso_pin >= 0 && READ(miso_pin)) b |= 1;
+
+      for (uint8_t j = 0; j < spi_speed; j++)
+        WRITE(DOGLCD_SCK, LOW);
+    }
+  }
+  return b;
+}
+
+static inline uint8_t swSpiTransfer_mode_3(uint8_t b, const uint8_t spi_speed, const pin_t miso_pin=-1) {
+  for (uint8_t i = 0; i < 8; i++) {
+    const uint8_t state = (b & 0x80) ? HIGH : LOW;
+    if (spi_speed == 0) {
+      WRITE(DOGLCD_SCK, LOW);
+      WRITE(DOGLCD_MOSI, state);
+      WRITE(DOGLCD_MOSI, state);  // need some setup time
+      WRITE(DOGLCD_SCK, HIGH);
+    }
+    else {
+      for (uint8_t j = 0; j < spi_speed + (miso_pin >= 0 ? 0 : 1); j++)
+        WRITE(DOGLCD_SCK, LOW);
+
+      for (uint8_t j = 0; j < spi_speed; j++)
+        WRITE(DOGLCD_MOSI, state);
+
+      for (uint8_t j = 0; j < spi_speed; j++)
+        WRITE(DOGLCD_SCK, HIGH);
+    }
+    b <<= 1;
+    if (miso_pin >= 0 && READ(miso_pin)) b |= 1;
+  }
+  return b;
+}
+
+static void u8g_sw_spi_HAL_STM32F1_shift_out(uint8_t val) {
+  #if ENABLED(FYSETC_MINI_12864)
+    swSpiTransfer_mode_3(val, SPI_speed);
+  #else
+    swSpiTransfer_mode_0(val, SPI_speed);
+  #endif
+}
+
+static uint8_t swSpiInit(const uint8_t spi_speed) {
+  #if PIN_EXISTS(LCD_RESET)
+    SET_OUTPUT(LCD_RESET_PIN);
+  #endif
+  SET_OUTPUT(DOGLCD_A0);
+  OUT_WRITE(DOGLCD_SCK, LOW);
+  OUT_WRITE(DOGLCD_MOSI, LOW);
+  OUT_WRITE(DOGLCD_CS, HIGH);
+  return spi_speed;
+}
+
+uint8_t u8g_com_HAL_STM32F1_sw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr) {
+  switch (msg) {
+    case U8G_COM_MSG_INIT:
+      SPI_speed = swSpiInit(SPI_SPEED);
+      break;
+
+    case U8G_COM_MSG_STOP:
+      break;
+
+    case U8G_COM_MSG_RESET:
+      #if PIN_EXISTS(LCD_RESET)
+        WRITE(LCD_RESET_PIN, arg_val);
+      #endif
+      break;
+
+    case U8G_COM_MSG_CHIP_SELECT:
+      #if ENABLED(FYSETC_MINI_12864) // This LCD SPI is running mode 3 while SD card is running mode 0
+        if (arg_val) {               // SCK idle state needs to be set to the proper idle state before
+                                     // the next chip select goes active
+          WRITE(DOGLCD_SCK, HIGH);   // Set SCK to mode 3 idle state before CS goes active
+          WRITE(DOGLCD_CS, LOW);
+        }
+        else {
+          WRITE(DOGLCD_CS, HIGH);
+          WRITE(DOGLCD_SCK, LOW);  // Set SCK to mode 0 idle state after CS goes inactive
+        }
+      #else
+        WRITE(DOGLCD_CS, !arg_val);
+      #endif
+      break;
+
+    case U8G_COM_MSG_WRITE_BYTE:
+      u8g_sw_spi_HAL_STM32F1_shift_out(arg_val);
+      break;
+
+    case U8G_COM_MSG_WRITE_SEQ: {
+      uint8_t *ptr = (uint8_t *)arg_ptr;
+      while (arg_val > 0) {
+        u8g_sw_spi_HAL_STM32F1_shift_out(*ptr++);
+        arg_val--;
+      }
+    } break;
+
+    case U8G_COM_MSG_WRITE_SEQ_P: {
+      uint8_t *ptr = (uint8_t *)arg_ptr;
+      while (arg_val > 0) {
+        u8g_sw_spi_HAL_STM32F1_shift_out(u8g_pgm_read(ptr));
+        ptr++;
+        arg_val--;
+      }
+    } break;
+
+    case U8G_COM_MSG_ADDRESS: /* define cmd (arg_val = 0) or data mode (arg_val = 1) */
+      WRITE(DOGLCD_A0, arg_val);
+      break;
+  }
+  return 1;
+}
+
+#endif // HAS_GRAPHICAL_LCD
+#endif // STM32F1

Marlin/src/inc/Conditionals_LCD.h

   #define ADC_KEY_NUM 8
   #define ULTIPANEL
 
-  // this helps to implement ADC_KEYPAD menus
+  // This helps to implement ADC_KEYPAD menus
   #define REVERSE_MENU_DIRECTION
   #define ENCODER_PULSES_PER_STEP 1
   #define ENCODER_STEPS_PER_MENU_ITEM 1
 
   #define U8GLIB_SSD1306
   #define ULTIPANEL
-  #define REVERSE_ENCODER_DIRECTION
-  #define REVERSE_MENU_DIRECTION
 
 #elif ENABLED(RA_CONTROL_PANEL)
 
   #define DEFAULT_LCD_CONTRAST 150
   #define LCD_CONTRAST_MAX 255
 
-#elif ANY(FYSETC_MINI_12864_1_2, FYSETC_MINI_12864_2_0, FYSETC_MINI_12864_2_1)
+#elif ANY(FYSETC_MINI_12864_X_X, FYSETC_MINI_12864_1_2, FYSETC_MINI_12864_2_0, FYSETC_MINI_12864_2_1)
 
   #define FYSETC_MINI_12864
   #define DOGLCD
   #define ULTIPANEL
   #define LCD_CONTRAST_MIN 0
   #define LCD_CONTRAST_MAX 255
-  #define DEFAULT_LCD_CONTRAST 255
+  #define DEFAULT_LCD_CONTRAST 220
   #define LED_COLORS_REDUCE_GREEN
   #if POWER_SUPPLY > 0 && EITHER(FYSETC_MINI_12864_2_0, FYSETC_MINI_12864_2_1)
     #define LED_BACKLIGHT_TIMEOUT 10000
 
 #if ENABLED(ULTI_CONTROLLER)
   #define U8GLIB_SSD1309
-  #define REVERSE_ENCODER_DIRECTION
   #define LCD_RESET_PIN LCD_PINS_D6 //  This controller need a reset pin
   #define LCD_CONTRAST_MIN 0
   #define LCD_CONTRAST_MAX 254

Marlin/src/inc/SanityCheck.h

   + ENABLED(G3D_PANEL) \
   + (ENABLED(MINIPANEL) && DISABLED(MKS_MINI_12864)) \
   + ENABLED(MKS_MINI_12864) \
+  + ENABLED(FYSETC_MINI_12864_X_X) \
   + ENABLED(FYSETC_MINI_12864_1_2) \
   + ENABLED(FYSETC_MINI_12864_2_0) \
   + ENABLED(FYSETC_MINI_12864_2_1) \

Marlin/src/lcd/dogm/HAL_LCD_com_defines.h

   #ifdef __SAM3X8E__
     uint8_t u8g_com_HAL_DUE_sw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr);
     #define U8G_COM_HAL_SW_SPI_FN  u8g_com_HAL_DUE_sw_spi_fn
-
     uint8_t u8g_com_HAL_DUE_shared_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_HAL_DUE_shared_hw_spi_fn
-
     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
+  #elif defined(__STM32F1__)
+    uint8_t u8g_com_HAL_STM32F1_sw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr);
+    #define U8G_COM_HAL_SW_SPI_FN u8g_com_HAL_STM32F1_sw_spi_fn
+    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
   #else
     uint8_t u8g_com_HAL_AVR_sw_sp_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr);
-    #define U8G_COM_HAL_SW_SPI_FN  u8g_com_HAL_AVR_sw_sp_fn
-
+    #define U8G_COM_HAL_SW_SPI_FN  u8g_com_HAL_AVR_sw_sp_fn // AVR ?
     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
   #endif

Marlin/src/lcd/dogm/u8g_dev_tft_320x240_upscale_from_128x64.cpp

 
 #include "../../inc/MarlinConfig.h"
 
-#if HAS_GRAPHICAL_LCD
+#if HAS_GRAPHICAL_LCD && PIN_EXISTS(FSMC_CS)
 
 #include "U8glib.h"
 #include "HAL_LCD_com_defines.h"

Marlin/src/pins/pins_BIGTREE_SKR_MINI_V1_1.h

   #define BOARD_NAME "BIGTREE SKR mini V1.1"
 #endif
 
-  //#define DISABLE_DEBUG
-  #define DISABLE_JTAG
+//#define DISABLE_DEBUG
+#define DISABLE_JTAG
 
 // Ignore temp readings during develpment.
 //#define BOGUS_TEMPERATURE_FAILSAFE_OVERRIDE
  *  (MOSI)   PB5 | · · | PB8 (BTN_EN2)               (LCD_D5)  PB7 | · · | PC13 (LCD_D4)
  * (SD_SS)  PA15 | · · | PD2 (BTN_EN1)               (LCD_RS) PC12 | · · | PB6  (LCD_EN)
  *   (SCK)   PB3 | · · | PB4 (MISO)                 (BTN_ENC) PC11 | · · | PC10 (BEEPER)
- *                ￣￣￣                                             ￣￣￣
+ *                -----                                             -----
  *                EXP2                                              EXP1
  */
 
 #if ENABLED(ULTRA_LCD)
-
   #define BEEPER_PIN       PC10
   #define BTN_ENC          PC11
   #define LCD_PINS_RS      PC12
   #define BTN_EN2          PB8
 
   #define LCD_PINS_ENABLE  PB6
-  #define LCD_PINS_D4      PC13
 
-  #if ENABLED(ULTIPANEL)
-    #define LCD_PINS_D5    PB7
-    #define LCD_PINS_D6    PC15
-    #define LCD_PINS_D7    PC14
-  #endif
+  #if ENABLED(FYSETC_MINI_12864)
+
+    #define LCD_BACKLIGHT_PIN -1
+    #define LCD_RESET_PIN  PC13
+    #define DOGLCD_A0      PC12
+    #define DOGLCD_CS      PB6
+    #define DOGLCD_SCK     PB3
+    #define DOGLCD_MOSI    PB5
+
+    #define FORCE_SOFT_SPI   // SPI MODE3
+
+    #define LED_PIN        PB7   // red pwm
+    //#define LED_PIN        PC15   // green
+    //#define LED_PIN        PC14   // blue
+
+    //#if EITHER(FYSETC_MINI_12864_1_2, FYSETC_MINI_12864_2_0)
+    //  #ifndef RGB_LED_R_PIN
+    //    #define RGB_LED_R_PIN PB7
+    //  #endif
+    //  #ifndef RGB_LED_G_PIN
+    //    #define RGB_LED_G_PIN PC15
+    //  #endif
+    //  #ifndef RGB_LED_B_PIN
+    //    #define RGB_LED_B_PIN PC14
+    //  #endif
+    //#elif ENABLED(FYSETC_MINI_12864_2_1)
+    //  #define NEOPIXEL_PIN    PB7
+    //#endif
+
+  #else // !FYSETC_MINI_12864
+
+    #define LCD_PINS_D4    PC13
+    #if ENABLED(ULTIPANEL)
+      #define LCD_PINS_D5  PB7
+      #define LCD_PINS_D6  PC15
+      #define LCD_PINS_D7  PC14
+    #endif
+
+  #endif // !FYSETC_MINI_12864
 
 #endif // ULTRA_LCD