微處理器 - STCmicro STC15W4K56S4 - C/C++ - 1.30" TFT 240x240 ST7789V


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main.c

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#include "stc15w4k56s4.h"
 
#define CS    P22
#define RST   P24
#define SCK   P21
#define SDA   P20
#define DC    P23
#define BL    P25
 
void delayms(unsigned int ms)
{
    unsigned int cnt = 0;
 
    while (ms--) {
        for (cnt = 0; cnt < 1000; cnt++) {
        }
    }
}
 
void gpio_init(void)
{
    P0M0 = 0x00;
    P0M1 = 0x00;
    P1M0 = 0x00;
    P1M1 = 0x00;
    P2M0 = 0x00;
    P2M1 = 0x00;
    P3M0 = 0x00;
    P3M1 = 0x00;
    P4M0 = 0x00;
    P4M1 = 0x00;
 
    P0 = 0xff;
    P1 = 0xff;
    P2 = 0xff;
    P3 = 0xff;
    P4 = 0xff;
}
 
void spi_cmd(unsigned char cmd)
{
    unsigned char bit = 0;
 
    CS = 0;
    DC = 0;
    for (bit = 0; bit < 8; bit++) {
        SCK = 0;
        if ((cmd & 0x80) == 0x80) {
            SDA = 1;
        }
        else {
            SDA = 0;
        }
        SCK = 1;
        cmd <<= 1;
    }
    CS = 1;
}
 
void spi_dat(unsigned char dat)
{
    unsigned char bit = 0;
 
    CS = 0;
    DC = 1;
    for (bit = 0; bit < 8; bit++) {
        SCK = 0;
        if ((dat & 0x80) == 0x80) {
            SDA = 1;
        }
        else {
            SDA = 0;
        }
        SCK = 1;
        dat <<= 1;
    }
    CS = 1;
}
 
void lcd_init(void)
{
    spi_cmd(0x36);
    spi_dat(0x00);
 
    spi_cmd(0x3a);
    spi_dat(0x05);
 
    spi_cmd(0xb2);
    spi_dat(0x0c);
    spi_dat(0x0c);
    spi_dat(0x00);
    spi_dat(0x33);
    spi_dat(0x33);
 
    spi_cmd(0xb7);
    spi_dat(0x35); 
 
    spi_cmd(0xbb);
    spi_dat(0x19);
 
    spi_cmd(0xc0);
    spi_dat(0x2c);
 
    spi_cmd(0xc2);
    spi_dat(0x01);
 
    spi_cmd(0xc3);
    spi_dat(0x12);  
 
    spi_cmd(0xc4);
    spi_dat(0x20); 
 
    spi_cmd(0xc6);
    spi_dat(0x0f);   
 
    spi_cmd(0xd0);
    spi_dat(0xa4);
    spi_dat(0xa1);
 
    spi_cmd(0xe0);
    spi_dat(0xd0);
    spi_dat(0x04);
    spi_dat(0x0d);
    spi_dat(0x11);
    spi_dat(0x13);
    spi_dat(0x2b);
    spi_dat(0x3f);
    spi_dat(0x54);
    spi_dat(0x4c);
    spi_dat(0x18);
    spi_dat(0x0d);
    spi_dat(0x0b);
    spi_dat(0x1f);
    spi_dat(0x23);
 
    spi_cmd(0xe1);
    spi_dat(0xd0);
    spi_dat(0x04);
    spi_dat(0x0c);
    spi_dat(0x11);
    spi_dat(0x13);
    spi_dat(0x2c);
    spi_dat(0x3f);
    spi_dat(0x44);
    spi_dat(0x51);
    spi_dat(0x2f);
    spi_dat(0x1f);
    spi_dat(0x1f);
    spi_dat(0x20);
    spi_dat(0x23);
 
    spi_cmd(0x21);
    spi_cmd(0x11);
    spi_cmd(0x29);
}
 
void main(void)
{
    unsigned int x = 0;
    unsigned int y = 0;
 
    gpio_init();
    AUXR |= 0x80;
 
    BL = 1;
    RST = 0;
    delayms(300);
    RST = 1;
    delayms(300);
 
    lcd_init();
 
    spi_cmd(0x2c);
    for (y = 0; y < 240; y++) {
        for (x = 0; x < 240; x++) {
            spi_dat(0xf8);
            spi_dat(0x00);
        }
    }
 
    while (1) {
        P55 = 0;
        delayms(500);
        P55 = 1;
        delayms(500);
    }
}

Makefile 

all:
	sdcc main.c
	packihx main.ihx > main.hex

flash:
	sudo stcgal -p /dev/ttyO2 -P stc15 -o clock_source=external main.hex

clean:
	rm -rf main.ihx main.lst main.mem main.rst main.lk main.map main.rel main.sym main.hex

完成