标题: FM1821250CT6-00显示屏点不亮求助，VG接了104电容至GND，C+与C-间也是接了104电容 [打印本页]
作者: onetwoto    时间: 2025-8-19 09:19
标题: FM1821250CT6-00显示屏点不亮求助，VG接了104电容至GND，C+与C-间也是接了104电容
  1. #include <STC8G.H>
  2. #include <intrins.h>

  4. sbit LCD_CS  = P3^2;
  5. sbit LCD_RST = P3^3;
  6. sbit LCD_A0  = P3^4;
  7. sbit LCD_SCL = P3^5;
  8. sbit LCD_SDA = P3^6;

  10. void delay_ms(unsigned int ms) {
  11.     unsigned int i, j;
  12.     for(i=0; i<ms; i++)
  13.         for(j=0; j<1000; j++);
  14. }


  17. void SPI_WriteByte(unsigned char dat) {
  18.     unsigned char i;
  19.     LCD_CS = 0;
  20.     for(i=0; i<8; i++) {
  21.         LCD_SCL = 0;
  22.         if(dat & 0x80)
  23.             LCD_SDA = 1;
  24.         else
  25.             LCD_SDA = 0;
  26.         LCD_SCL = 1;
  27.         dat <<= 1;
  28.     }
  29.     LCD_CS = 1;
  30. }


  33. void LCD_WriteCmd(unsigned char cmd) {
  34.     LCD_A0 = 0;
  35.     SPI_WriteByte(cmd);
  36. }


  39. void LCD_WriteData(unsigned char dat) {
  40.     LCD_A0 = 1;
  41.     SPI_WriteByte(dat);
  42. }


  45. void LCD_Init() {
  46.     LCD_RST = 0;
  47.     delay_ms(100);
  48.     LCD_RST = 1;
  49.     delay_ms(100);
  50.    
  51.    
  52.    
  53.         LCD_WriteCmd(0xE2);   
  54.     delay_ms(100);
  55.     LCD_WriteCmd(0xA3);   
  56.     LCD_WriteCmd(0xA0);   
  57.     LCD_WriteCmd(0xC8);   
  58.     LCD_WriteCmd(0x24);   
  59.     LCD_WriteCmd(0x81);   
  60.    
  61.         LCD_WriteCmd(0x20);   
  62.     LCD_WriteCmd(0x2F);   
  63.     LCD_WriteCmd(0x40);   
  64.    
  65.         LCD_WriteCmd(0xA6);   
  66.     LCD_WriteCmd(0xA4);   
  67.     LCD_WriteCmd(0xAF);   
  68. }

  70. void LCD_Clear() {
  71.     unsigned int i;
  72.     LCD_WriteCmd(0xB0);   
  73.     LCD_WriteCmd(0x10);   
  74.    
  75.         LCD_WriteCmd(0x00);   
  76.    
  77.     for(i=0; i<1024; i++) {
  78.         LCD_WriteData(0x00);
  79.     }
  80. }

  82. void LCD_SetPos(unsigned char x, unsigned char y) {
  83.     LCD_WriteCmd(0xB0 + y);            
  84.     LCD_WriteCmd(0x10 + (x >> 4));     
  85.    
  86.         LCD_WriteCmd(x & 0x0F);            

  88.         }



  92. void main() {
  93.    
  94.    
  95.         P3M0 = 0x00;
  96.     P3M1 = 0x00;
  97.    
  98.    
  99.     LCD_Init();
  100.     LCD_Clear();
  101.    
  102.    
  103.    
  104.         LCD_SetPos(10, 0);
  105.     LCD_WriteData(0xFF);
  106.     LCD_WriteData(0xFF);
  107.     LCD_WriteData(0xFF);
  108.    
  109.     LCD_SetPos(20, 2);
  110.     LCD_WriteData(0x01);
  111.     LCD_WriteData(0x02);
  112.     LCD_WriteData(0x04);
  113.     LCD_WriteData(0x08);
  114.     LCD_WriteData(0x10);
  115.     LCD_WriteData(0x20);
  116.     LCD_WriteData(0x40);
  117.     LCD_WriteData(0x80);
  118.    
  119.     while(1) {
  120.    
  121.                 }
  122. }
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作者: joyb    时间: 2025-8-19 14:26
厂家有亮屏程序



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