基于ST7565的LCD12864测试程序+视频

ID:224782 · 发表于 2019-8-8 11:41

据说ST756很坑，最近做项目正好遇到，果然被坑的不轻

总结而言，不能求快，尤其是质量不太好的屏幕模块，快了就罢工

直接贴完整驱动函数（单片机是STC15LE5A32S2,指令按照使用手册重新排写的，可直接移植，基本不会出问题）
/************************底层驱动函数************************/
void ms_Delay_12864(unsigned int ms)//STC12, 11.0592M
{
unsigned char j;
while(ms --)
for(j = 0; j < 30; j ++); //20us=0.02ms//
}

void Delay_Buff( )/*数据缓冲，根据具体实物改动（下载后不显示可适当加长延时）*/
{
      unsigned char i;

      for(i = 0; i < 35; i ++)//16
      {
            _nop_( );
      }
}

void LCD_Write_Reg(unsigned char Command)
{
      unsigned char i, j;

      CS = 0;
      RS = 0;
      SCL = 0;

      for(i = 0; i < 8; i ++)
      {
            j = Command;
            SCL = 0;
            SI = Command & 0x80;
            SCL = 1;
            Command = j << 1;
            Delay_Buff( );/*根据具体硬件改写，某些硬件需要缓冲，有硬件缓冲时可取消延时*/
      }
      CS = 1;
      RS = 1;
}

void LCD_Write_Byte(unsigned char byte)
{
      unsigned char i, j;

      CS = 0;
      RS = 1;
      SCL = 0;

      for(i = 0; i < 8; i ++)
      {
            j = byte;
            SCL = 0;
            SI = byte & 0x80;
            SCL = 1;
            byte = j << 1;
            Delay_Buff( );/*根据具体硬件改写，某些硬件需要缓冲，有硬件缓冲时可取消延时*/
      }
      CS = 1;
      RS = 0;
}

void LCD_Clear( )
{
      unsigned char i, j;

      for(i = 0; i < 8; i ++)
      {
            LCD_Write_Reg(0xb0 + i);             // (Page = 0xB0)//设置位置
            LCD_Write_Reg(0x10);
            LCD_Write_Reg(0x00);
            for(j = 0; j < 132; j ++)          //发送数据
            {
                     LCD_Write_Byte(0);
            }
      }
}

void LCD_ALL( )
{
      unsigned char i, j;

      for(i = 0; i < 8; i ++)
      {
            LCD_Write_Reg(0xb0 + i);             // (Page = 0xB0)//设置位置
            LCD_Write_Reg(0x10);
            LCD_Write_Reg(0x00);
            for(j = 0; j < 132; j ++)          //发送数据
            {
                     LCD_Write_Byte(0xff);
            }
      }
}

void LCD_Init( )//有效命令基本已罗列
{
      RST = 0;
      ms_Delay_12864(50);
      RST = 1;
      ms_Delay_12864(20);

      LCD_Write_Reg(0xe2);//软件复位
      ms_Delay_12864(5);
      LCD_Write_Reg(0x2c);//电源控制0x28 ~ 0xf
      ms_Delay_12864(5);
      LCD_Write_Reg(0x2e);
      ms_Delay_12864(5);
      LCD_Write_Reg(0x2f);
      ms_Delay_12864(5);

      LCD_Write_Reg(0xa3);//偏压比: 0xa2 >> 1/9, 0xa3 >> 1/7
      LCD_Write_Reg(0x23);//内部电阻比例: 0x20 ~ 0x27

      LCD_Write_Reg(0x81);//设置内部液晶电压模式
      LCD_Write_Reg(0x1d);//L: 0x00 ~ 0x3f
      LCD_Write_Reg(0x24);//H: 0x21 ~ 0x27

      LCD_Write_Reg(0xf8);//设置升压倍数
      LCD_Write_Reg(0x01);//0x00 >> 2 ~ 4倍, 0x01 >> 5倍, 0x03 >> 6倍

      LCD_Write_Reg(0x40);//从首行开始显示
      LCD_Write_Reg(0xa6);//0xa6 >> 正显, 0xa7 >> 反显
      LCD_Write_Reg(0xc8);//0xc8 >> 反向扫描, 0xc0 >> 顺序扫描
      LCD_Write_Reg(0xa0);//0xa0 >> 正常显示, 0xa1 >> 左右镜像
      LCD_Write_Reg(0xa4);//0xa4 >> 显示全部点阵, 0xa5 >>不显示全部点阵
      LCD_Write_Reg(0xac);//0xac >> 静态图标显示, 0xad >> 无静态图标

      LCD_Write_Reg(0xaf);//0xaf >> 显示开, 0xae >> 显示关

      LCD_Clear( );
}
/************************************************************************/

附件里有视频、模块说明书和ST7565操作指令表:

LCD12864-ST7565.zip (18.82 MB, 下载次数: 102)