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st7789s显示芯片驱动代码

st7789s显⽰芯⽚驱动代码

gpiofd_write(resetIO, 1);

usleep(50000);

gpiofd_write(resetIO, 0);

usleep(100000);

gpiofd_write(resetIO, 1);

usleep(100000);

st7789s芯⽚是分⼤⼩端的，当使⽤RGB16位⽅式发送数据时要注意发送数据的⼤⼩端问题

send_ctrl_cmd(0x11);

usleep(120000);

做文明有礼的北京人send_ctrl_cmd(0x36);

send_data_cmd(0x00);//更改显⽰⽅式

send_ctrl_cmd(0x3a);

send_data_cmd(0x06);//更改rgb颜⾊为多少位

send_ctrl_cmd(0xb0);

send_data_cmd(0xa0);//06

小松930e>武林大会八卦掌send_ctrl_cmd(0xb2);

send_data_cmd(0x28);

send_data_cmd(0x05);

send_data_cmd(0x33);

send_ctrl_cmd(0xb7);

send_data_cmd(0x35);

send_ctrl_cmd(0xbb);

send_data_cmd(0x3c);//23

send_ctrl_cmd(0xb1);

send_data_cmd(0x80);

send_data_cmd(0x10);

send_ctrl_cmd(0xc0);

send_data_cmd(0x2c);

send_ctrl_cmd(0xc2);

send_data_cmd(0x01);

send_ctrl_cmd(0xc3);

send_data_cmd(0x05);//14

send_ctrl_cmd(0xc4);

send_data_cmd(0x20);

send_ctrl_cmd(0xc6);

send_data_cmd(0x14); // 14

send_ctrl_cmd(0xd0);

send_data_cmd(0xa4);

send_data_cmd(0xa1);

send_ctrl_cmd(0xe0);

send_data_cmd(0xd0);

send_data_cmd(0x00);

send_data_cmd(0x02);

send_data_cmd(0x07);

send_data_cmd(0x19);

send_data_cmd(0x2e);

send_data_cmd(0x54);

send_data_cmd(0x41);

send_data_cmd(0x2d);

send_data_cmd(0x17);

send_data_cmd(0x18);

周渝斐

send_data_cmd(0x14);

send_data_cmd(0x18);

send_ctrl_cmd(0xe1);

send_data_cmd(0xd0);

send_data_cmd(0x00);

send_data_cmd(0x02);

send_data_cmd(0x07);

send_data_cmd(0x04);

send_data_cmd(0x24);

send_data_cmd(0x2c);

send_data_cmd(0x44);

send_data_cmd(0x42);

send_data_cmd(0x1c);

send_data_cmd(0x1a);

send_data_cmd(0x17);

send_data_cmd(0x15);

send_data_cmd(0x18);

send_ctrl_cmd(0x35);

send_data_cmd(0x00);//40

send_ctrl_cmd(0x44);

send_data_cmd(0x19);

send_ctrl_cmd(0x29);

********************************清屏代码，把屏幕全部刷成⼀个⾊判断驱动是否有问题**********************

static void sw_clear_panel(unsigned int color)

{

unsigned short x0, y0, x1, y1, x, y;

unsigned short h_X_start,l_X_start,h_X_end,l_X_end,h_Y_start,l_Y_start,h_Y_end,l_Y_end;

x0 = (unsigned short)0;

y0 = (unsigned short)0;

x1 = (unsigned short)FRAME_WIDTH-1;

y1 = (unsigned short)FRAME_HEIGHT-1;

h_X_start=((x0&0xFF00)>>8);

l_X_start=(x0&0x00FF);

h_X_end=((x1&0xFF00)>>8);

l_X_end=(x1&0x00FF);

h_Y_start=((y0&0xFF00)>>8);

l_Y_start=(y0&0x00FF);

h_Y_end=((y1&0xFF00)>>8);

l_Y_end=(y1&0x00FF);

send_ctrl_cmd(0x2A);

send_data_cmd(h_X_start);

send_data_cmd(l_X_start);

send_data_cmd(h_X_end);

send_data_cmd(l_X_end);

send_ctrl_cmd(0x2B);

send_data_cmd(h_Y_start);

send_data_cmd(l_Y_start);

send_data_cmd(h_Y_end);

send_data_cmd(l_Y_end);

send_ctrl_cmd(0x29);

send_ctrl_cmd(0x2C);

for (y = y0; y <= y1; ++ y) {

for (x = x0; x <= x1; ++ x) { //采⽤了RGB24位的数据，所以发送三次

send_data_cmd(0xff);

send_data_cmd(0);

开封市人事局

send_data_cmd(0);

}

我使⽤这个2.8⼨的屏幕有IO引脚控制发送的是数据还是命令给主控芯⽚，所以在发送时候要注意在主控芯⽚控制命令和数据引脚的⾼低电平VOID send_ctrl_cmd (UCHAR cmd) {

gpiofd_write(cmdDataIO, 0);

lib_bzero(&spiMsg, sizeof(spiMsg));

spiMsg.SPIMSG_pucRdBuffer =pucDestBuffer;

spiMsg.SPIMSG_pucWrBuffer = &cmd;

spiMsg.SPIMSG_uiLen = 1;

if (API_SpiDeviceTransfer(pSpiDevice, &spiMsg, 1) != 1) {

printf("failed to spi transfer!\n");

API_SpiDeviceDelete(pSpiDevice);

API_VmmDmaFree(pucSrcBuffer);

return;

}

gpiofd_write(cmdDataIO, 1);

}

VOID send_data_cmd (UCHAR data) {

gpiofd_write(cmdDataIO, 1);

哥本哈根协议

lib_bzero(&spiMsg, sizeof(spiMsg));

spiMsg.SPIMSG_pucRdBuffer = pucDestBuffer;

spiMsg.SPIMSG_pucWrBuffer = &data;

spiMsg.SPIMSG_uiLen = 1;

if (API_SpiDeviceTransfer(pSpiDevice, &spiMsg, 1) != 1) { printf("failed to spi transfer!\n");

API_SpiDeviceDelete(pSpiDevice);

API_VmmDmaFree(pucSrcBuffer);

return;

}

gpiofd_write(cmdDataIO, 0);

}

本文发布于:2024-09-23 22:29:54，感谢您对本站的认可！

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标签：数据屏幕引脚

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