我正在尝试将 stm32f103c8t6板与 ILI9325 LCD显示器连接。我在 Atollic TrueStudio 中为它创建了一个驱动程序并成功运行它。现在，我正在尝试将驱动程序传输到 Arduino IDE，因为在这里将我的代码与该项目的其他代码集成起来会更容易。但是，该驱动程序在 Arduino IDE 中不起作用。LCD只是空白。
我已经在 Arduino IDE 中为 stm32f1 测试了基本的 GPIO 操作，它工作正常。我检查了 LCD 上的引脚。他们似乎收到了董事会的命令。所有接线都是正确的，因为屏幕使用 Atollic 的代码工作，无需任何接线更改。
这是我在 Arduino IDE 中使用的驱动程序代码。它与 Atollic 中的基本相同。我改变的只是初始化和设置GPIO的功能。
#define LCD_RESET_Pin 9
#define LCD_CS_Pin 8
#define LCD_RS_Pin 7
#define LCD_WR_Pin 6
#define LCD_RD_Pin 5
#define TFT_W 320
#define TFT_H 240
#define WHITE 0xFFFF
#define BLACK 0x0000
#define BLUE 0x001F
#define RED 0xF800
#define MAGENTA 0xF81F
#define GREEN 0x07E0
#define CYAN 0x7FFF
#define YELLOW 0xFFE0
#define BROWN 0xBC40
#define BRRED 0xFC07 // brownish red
#define GRAY 0x8430 // gray
#define DARKBLUE 0x01CF // dark blue
#define LIGHTBLUE 0x7D7C // blue
#define GRAYBLUE 0x5458 // gray-blue
#define LIGHTGREEN 0x841F // light green
#define LIGHTGRAY 0xC618 // light gray
void write_cmd_tft(uint16_t command)
{
gpio_write_bit(GPIOA, LCD_RS_Pin, LOW);
gpio_write_bit(GPIOA, LCD_CS_Pin, LOW);
GPIOB->regs->ODR = command;
gpio_write_bit(GPIOA, LCD_WR_Pin, LOW);
delayMicroseconds(10);
gpio_write_bit(GPIOA, LCD_WR_Pin, HIGH);
gpio_write_bit(GPIOA, LCD_CS_Pin, HIGH);
}
void write_data16_tft(uint16_t data)
{
gpio_write_bit(GPIOA, LCD_RS_Pin, HIGH);
gpio_write_bit(GPIOA, LCD_CS_Pin, LOW);
GPIOB->regs->ODR = data;
gpio_write_bit(GPIOA, LCD_WR_Pin, LOW);
delayMicroseconds(10);
gpio_write_bit(GPIOA, LCD_WR_Pin, HIGH);
gpio_write_bit(GPIOA, LCD_CS_Pin, HIGH);
}
#define cmd_write_ROM() write_cmd_tft(0x22)
#define cmd_write_pixel(color) write_data16_tft(color)
void write_reg_tft(uint16_t registerTFT, uint16_t dataTFT)
{
write_cmd_tft(registerTFT);
write_data16_tft(dataTFT);
}
void set_frame( uint16_t w1, uint16_t h1,
uint16_t w2, uint16_t h2)
{
if ((w1 >= TFT_W)||(h1 >= TFT_H)||(w2 >= TFT_W)||(h2 >= TFT_H));
write_reg_tft(0x50,h1);
write_reg_tft(0x51,h2);
write_reg_tft(0x52,w1);
write_reg_tft(0x53,w2);
write_reg_tft(0x20,h1);
write_reg_tft(0x21,w1);
}
void draw_pixel(uint16_t w, uint16_t h, uint16_t color)
{
write_reg_tft(0x20,h);
write_reg_tft(0x21,w);
write_reg_tft(0x22,color);
}
void draw_point(uint16_t w, uint16_t h,
uint8_t size,
uint16_t color)
{
uint16_t i = (uint16_t)size*size;
set_frame(w, h, w+size-1, h+size-1);
write_cmd_tft(0x22);
while(i--) write_data16_tft(color);
}
void fill_color (uint16_t color)
{
uint32_t i = (uint32_t)(TFT_W)*(TFT_H);
Serial2.print("Число пикселей: ");
Serial2.println(i);
set_frame(0, 0, TFT_W-1, TFT_H-1);
write_cmd_tft(0x22);
while(i--) write_data16_tft(color);
}
void init_tft (void)
{
gpio_write_bit(GPIOA, LCD_RD_Pin, HIGH);
gpio_write_bit(GPIOA, LCD_RESET_Pin, LOW);
delay(100);
gpio_write_bit(GPIOA, LCD_RESET_Pin, HIGH);
delay(100);
write_reg_tft(0x01,0x0000);
write_reg_tft(0x02,0x0700);
write_reg_tft(0x03,0x1038);
write_reg_tft(0x04,0x0000);
write_reg_tft(0x07,0x0000);
write_reg_tft(0x08,0x0302);
write_reg_tft(0x09,0x0000);
write_reg_tft(0x0A,0x0000);
write_reg_tft(0x0C,0x0000);
write_reg_tft(0x0D,0x0000);
write_reg_tft(0x0F,0x0000);
write_reg_tft(0x10,0x1290);
write_reg_tft(0x11,0x0007);
delay(100);
write_reg_tft(0x12,0x0092);
delay(100);
write_reg_tft(0x13,0x0E00);
delay(100);
write_reg_tft(0x29,0x0005);
write_reg_tft(0x2B,0x000E);
write_reg_tft(0x30,0x0004);
write_reg_tft(0x31,0x0307);
write_reg_tft(0x32,0x0002);
write_reg_tft(0x35,0x0206);
write_reg_tft(0x36,0x0A00);
write_reg_tft(0x37,0x0507);
write_reg_tft(0x38,0x0204);
write_reg_tft(0x39,0x0707);
write_reg_tft(0x3C,0x0405);
write_reg_tft(0x3D,0x0000);
write_reg_tft(0x50,0x0000);
write_reg_tft(0x51,0x00EF);
write_reg_tft(0x52,0x0000);
write_reg_tft(0x53,0x013F);
write_reg_tft(0x60,0xA700);
write_reg_tft(0x61,0x0001);
write_reg_tft(0x6A,0x0000);
write_reg_tft(0x80,0x0000);
write_reg_tft(0x81,0x0000);
write_reg_tft(0x82,0x0000);
write_reg_tft(0x83,0x0000);
write_reg_tft(0x84,0x0000);
write_reg_tft(0x85,0x0000);
write_reg_tft(0x90,0x0029);
write_reg_tft(0x92,0x0600);
write_reg_tft(0x93,0x0003);
write_reg_tft(0x95,0x0110);
write_reg_tft(0x97,0x0000);
write_reg_tft(0x98,0x0000);
write_reg_tft(0x07,0x0133);
fill_color(BLUE);
}
// the setup function runs once when you press reset or power the board
void setup() {
// initialize GPIO pins
pinMode(PA9, OUTPUT); //LCD_RESET_Pin
pinMode(PA8, OUTPUT); //LCD_CS_Pin
pinMode(PA7, OUTPUT); //LCD_RS_Pin
pinMode(PA6, OUTPUT); //LCD_WR_Pin
pinMode(PA5, OUTPUT); //LCD_RD_Pin
gpio_write_bit(GPIOA, LCD_RESET_Pin, HIGH);
gpio_write_bit(GPIOA, LCD_CS_Pin, HIGH);
gpio_write_bit(GPIOA, LCD_RS_Pin, HIGH);
gpio_write_bit(GPIOA, LCD_WR_Pin, HIGH);
gpio_write_bit(GPIOA, LCD_RD_Pin, HIGH);
pinMode(PB15, OUTPUT);
pinMode(PB14, OUTPUT);
pinMode(PB13, OUTPUT);
pinMode(PB12, OUTPUT);
pinMode(PB11, OUTPUT);
pinMode(PB10, OUTPUT);
pinMode(PB9, OUTPUT);
pinMode(PB8, OUTPUT);
pinMode(PB7, OUTPUT);
pinMode(PB6, OUTPUT);
pinMode(PB5, OUTPUT);
pinMode(PB4, OUTPUT);
pinMode(PB3, OUTPUT);
pinMode(PB2, OUTPUT);
pinMode(PB1, OUTPUT);
pinMode(PB0, OUTPUT);
init_tft();
}
// the loop function runs over and over again forever
void loop() {
}
它应该做的是初始化 LCD 并将其填充为蓝色。相反，它只是一个空白屏幕。