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標題: 1.8 TFT st7735s顯示顏色不對，請幫看看 [打印本頁]

作者: jxcrgt35 時間: 2023-10-12 08:54
標題: 1.8 TFT st7735s顯示顏色不對，請幫看看
調試字體顏色為#define PURPLE 0xF81F //紫，實際顯示為綠色
調試字體顏色為#define WHITE 0xFFFF //白，實際顯示為黃色

不知道哪設置不對
//屏幕轉向和RGB格式
tft_write_reg(0x36);
tft_write_byte(0xA0);

//設置A8也不行
tft_write_byte(0xA8);

//***********************************************************************
//TFT常用顏色(RGB565采用兩個字節表示顏色,前5位表示紅色,中間6位表示綠色,后面5位表示藍色)
#define RED    0xF800 //紅
#define YELLOW  0xFFE0 //黃
#define GREEN 0x07E0 //綠
#define CYAN 0x07FF //青
#define BLUE 0x001F //藍
#define PURPLE 0xF81F //紫
#define BLACK 0x0000 //黑
#define WHITE 0xFFFF //白
#define GRAY 0x7BEF //灰

//LCD初始化
void tft_init(void)
{
sys_delay = 20/10;
LCD_RST = 0;
while(sys_delay){rst_wdi();}
LCD_RST = 1;

//等待芯片復位時間200ms
sys_delay = 200/10;
while(sys_delay){rst_wdi();}

//端口初始化
LCD_CS = 1;
LCD_CLK = 0;

//芯片初始化
tft_write_reg(0x11);
sys_delay = 200/10;
while(sys_delay){rst_wdi();}

//tft_write_reg(0x21); //顯示反轉

//幀速率設置
tft_write_reg(0xB1);
tft_write_byte(0x01);
tft_write_byte(0x2c);
tft_write_byte(0x2d);

tft_write_reg(0xB2);
tft_write_byte(0x01);
tft_write_byte(0x2c);
tft_write_byte(0x2d);

tft_write_reg(0xB3);
tft_write_byte(0x01);
tft_write_byte(0x2c);
tft_write_byte(0x2d);
tft_write_byte(0x01);
tft_write_byte(0x2c);
tft_write_byte(0x2d);

//列反轉模式設置
tft_write_reg(0xB4);
tft_write_byte(0x07);
//POWER CONTROL
tft_write_reg(0xC0);
tft_write_byte(0xa2);
tft_write_byte(0x02);
tft_write_byte(0x84);
//電壓設置
tft_write_reg(0xC1);
tft_write_byte(0xC5);

tft_write_reg(0xC2);
tft_write_byte(0x0a);
tft_write_byte(0x00);

tft_write_reg(0xC3);
tft_write_byte(0x8a);
tft_write_byte(0x2A);

tft_write_reg(0xC4);
tft_write_byte(0x8a);
tft_write_byte(0xEE);

tft_write_reg(0xC5);  //VCOM/
tft_write_byte(0x0e);

//屏幕轉向和RGB格式
tft_write_reg(0x36);
tft_write_byte(0xA0);

tft_write_reg(0xe0);
tft_write_byte(0x0f);
tft_write_byte(0x1a);
tft_write_byte(0x0f);
tft_write_byte(0x18);
tft_write_byte(0x2f);
tft_write_byte(0x28);
tft_write_byte(0x20);
tft_write_byte(0x22);
tft_write_byte(0x1f);
tft_write_byte(0x1b);
tft_write_byte(0x23);
tft_write_byte(0x37);
tft_write_byte(0x00);
tft_write_byte(0x07);
tft_write_byte(0x02);
tft_write_byte(0x10);

tft_write_reg(0xe1);
tft_write_byte(0x0f);
tft_write_byte(0x1b);
tft_write_byte(0x0f);
tft_write_byte(0x17);
tft_write_byte(0x33);
tft_write_byte(0x2c);
tft_write_byte(0x29);
tft_write_byte(0x2e);
tft_write_byte(0x30);
tft_write_byte(0x30);
tft_write_byte(0x39);
tft_write_byte(0x3f);
tft_write_byte(0x00);
tft_write_byte(0x07);
tft_write_byte(0x03);
tft_write_byte(0x10);

//interface 16bit / pixle
tft_write_reg(0x3A);
tft_write_byte(0x05);

tft_write_reg(0x29);

tft_clear();
}

void tft_write_char (uint8_t sx,uint8_t sy,uint8_t in_data)
{
uint8_t i = 0, j= 0,temp;
uint8_t *ptr = ASCII + ((in_data - 0x20) * 16);

tft_window_set(sx,sy,sx+7,sy+15);
for (i = 0;i < 16; i++)
{
temp = *ptr;
for (j = 0; j < 8; j++)
{
if(temp & 0x01){tft_write_word(PURPLE);}
else{tft_write_word(BLACK);}
temp >>= 1;
}
ptr++;
}
}

void tft_write_msg(uint8_t sx,uint8_t sy,uint8_t *str)
{
unsigned char i = 0;

rst_wdi();

while((*str != '\0')&&(i < 20))//最大限制為20字符
{
tft_write_char (sx,sy,*str++);
sx += 8;
i++;
}
}

作者: jxcrgt35 時間: 2023-10-12 20:17
結題，范了一個初級錯誤，16bit需要移位是0x8000去取位

作者: jxcrgt35 時間: 2023-10-12 20:43
犯了初級錯誤，在移位16bit，取高位應為 data & 0x8000

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