Added LCD test code.

Core/Inc/st7302_lcd.h

@@ -0,0 +1,28 @@
+#ifndef __ST7302_LCD_H
+#define __ST7302_LCD_H
+
+#include <stdint.h>
+
+#define ST7302_PANEL_SELECTION st7302_gd_unknown_init_sequence
+
+typedef enum {
+    ST7302_OK,
+    ST7302_ERROR
+} st7302_ret_t;
+
+typedef struct {
+    st7302_ret_t (*reset_cb)(void *handle);
+    st7302_ret_t (*write_cmd_cb)(void *handle, uint8_t *cmd, uint8_t len);
+    st7302_ret_t (*write_data_cb)(void *handle, uint8_t *data, uint16_t len);
+} st7302_cb_t;
+
+typedef struct {
+    void *user_data;
+    st7302_cb_t cb;
+} st7302_t;
+
+#define ST7302_ERROR_CHECK(x) if(x != ST7302_OK) return ST7302_ERROR
+
+st7302_ret_t st7302_init(st7302_t *lcd);
+
+#endif

Core/Src/main.c

@@ -23,6 +23,8 @@
 /* Private includes ----------------------------------------------------------*/
 /* USER CODE BEGIN Includes */
 
+#include "st7302_lcd.h"
+
 /* USER CODE END Includes */
 
 /* Private typedef -----------------------------------------------------------*/
@@ -65,6 +67,28 @@ static void MX_SPI1_Init(void);
 /* Private user code ---------------------------------------------------------*/
 /* USER CODE BEGIN 0 */
 
+st7302_ret_t _lcd_write_cmd(void *handle, uint8_t *command, uint8_t len) {
+  HAL_GPIO_WritePin(SPI1_A0_GPIO_Port, SPI1_A0_Pin, GPIO_PIN_RESET);
+  if(HAL_SPI_Transmit(&hspi1, command, 0x01, 1000) != HAL_OK) {
+    return ST7302_ERROR;
+  }
+  if(len > 1) {
+    HAL_GPIO_WritePin(SPI1_A0_GPIO_Port, SPI1_A0_Pin, GPIO_PIN_SET);
+    if(HAL_SPI_Transmit(&hspi1, &command[1], len - 1, 1000) != HAL_OK) {
+      return ST7302_ERROR;
+    }
+  }
+  return ST7302_OK;
+}
+
+st7302_ret_t _lcd_write_data(void *handle, uint8_t *data, uint16_t len) {
+  HAL_GPIO_WritePin(SPI1_A0_GPIO_Port, SPI1_A0_Pin, GPIO_PIN_SET);
+  if(HAL_SPI_Transmit(&hspi1, data, len, 1000) != HAL_OK) {
+    return ST7302_ERROR;
+  }
+  return ST7302_OK;
+}
+
 /* USER CODE END 0 */
 
 /**
@@ -112,6 +136,18 @@ int main(void)
   MX_SPI1_Init();
   /* USER CODE BEGIN 2 */
 
+  HAL_GPIO_WritePin(SPI1_RST_GPIO_Port, SPI1_RST_Pin, GPIO_PIN_SET);
+
+  st7302_t lcd = {
+    .cb = {
+      .write_cmd_cb = _lcd_write_cmd,
+      .write_data_cb = _lcd_write_data
+    },
+    .user_data = &hspi1
+  };
+
+  st7302_init(&lcd);
+
   /* USER CODE END 2 */
 
   /* Infinite loop */

Core/Src/st7302_lcd.c

@@ -0,0 +1,45 @@
+#include "st7302_lcd.h"
+
+#include "stm32h7xx_hal.h"
+
+uint8_t st7302_gd_unknown_init_sequence[] = {
+    0x01, 0xEB, 0x02, // Enable OTP
+    0x01, 0xD7, 0x68, // OTP Load Control
+    0x01, 0xD1, 0x01, // Auto Power Control
+    0x01, 0xC0, 0x40, // Gate Voltage setting
+    0x06, 0xC1, 0x22, 0x22, 0x22, 0x22, 0x14, 0x00, // VSH Setting
+    0x04, 0xC2, 0x00, 0x00, 0x00, 0x00, // VSL Setting
+    0x01, 0xCB, 0x0E, // VCOMH Setting
+    0x0A, 0xB4, 0xE5, 0x66, 0x85, 0xFF, 0xFF, 0x52, 0x85, 0xFF, 0xFF, 0x52, // Gate EQ
+    0x02, 0xC7, 0xA6, 0xE9, // OSC Setting
+    0x01, 0xB0, 0x3F, // Duty Setting
+    0x01, 0x36, 0x00, // Memory Access Mode
+    0x01, 0x3A, 0x11, // Data Format
+    0x01, 0xB9, 0x23, // Source Setting
+    0x01, 0xB8, 0x09, // Source Setting
+    0x02, 0x2A, 0x19, 0x23, // Column Address Setting
+    0x02, 0x2B, 0x00, 0x7C, // Row Address Setting
+};
+
+st7302_ret_t _st7302_init_seq(st7302_t *lcd) {
+    uint16_t i = 0;
+    
+    while(i < sizeof(ST7302_PANEL_SELECTION)) {
+        ST7302_ERROR_CHECK(lcd->cb.write_cmd_cb(lcd->user_data, &ST7302_PANEL_SELECTION[i + 1], ST7302_PANEL_SELECTION[i] + 1));
+        i += ST7302_PANEL_SELECTION[i] + 2;
+    }
+
+    return ST7302_OK;
+}
+
+st7302_ret_t st7302_init(st7302_t *lcd) {
+    ST7302_ERROR_CHECK(_st7302_init_seq(lcd));
+    uint8_t command[3] = {0xB2, 0x01, 0x05};
+    command[0] = 0x11;
+    ST7302_ERROR_CHECK(lcd->cb.write_cmd_cb(lcd->user_data, command, 0x01)); // Sleep Out
+    HAL_Delay(100);
+    command[0] = 0x29;
+    ST7302_ERROR_CHECK(lcd->cb.write_cmd_cb(lcd->user_data, command, 0x01)); // Display ON
+
+    return ST7302_OK;
+}

Makefile

@@ -39,6 +39,7 @@ C_SOURCES =  \
 Core/Src/main.c \
 Core/Src/stm32h7xx_it.c \
 Core/Src/stm32h7xx_hal_msp.c \
+Core/Src/st7302_lcd.c \
 Drivers/STM32H7xx_HAL_Driver/Src/stm32h7xx_hal_cortex.c \
 Drivers/STM32H7xx_HAL_Driver/Src/stm32h7xx_hal_qspi.c \
 Drivers/STM32H7xx_HAL_Driver/Src/stm32h7xx_hal_rcc.c \