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: 100)
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