#define EN_SET EN = 1
void DelayUs2x(unsigned char t)
{
while(--t);
}
/*------------------------------------------------
mS延时函数,含有输入参数 unsigned char t,无返回值
unsigned char 是定义无符号字符变量,其值的范围是
0~255 这里使用晶振12M,精确延时请使用汇编
------------------------------------------------*/
void DelayMs(unsigned char t)
{
while(t--)
{
//大致延时1mS
DelayUs2x(245);
DelayUs2x(245);
}
}
/*------------------------------------------------
判忙函数 读状态 输入RS=L;RW=H;E=H;
------------------------------------------------*/
bit LCD_Check_Busy(void)
{
RS_CLR;
RW_SET;
_nop_();
EN_SET;
return (bit)(DataPort & 0x80);
EN_CLR;
}
/*------------------------------------------------
写入命令函数
------------------------------------------------*/
void LCD_Write_Com(unsigned char com)
{
while(LCD_Check_Busy()); //忙则等待
RS_CLR;
RW_CLR;
EN_CLR;
_nop_();
EN_SET;
DataPort= com;
_nop_();
EN_CLR;
}
/*------------------------------------------------
写入数据函数
------------------------------------------------*/
void LCD_Write_Data(unsigned char Data)
{
while(LCD_Check_Busy()); //忙则等待
RS_SET;
RW_CLR;
EN_CLR;
_nop_();
EN_SET;
DataPort= Data;
_nop_();
EN_CLR;
}
/*------------------------------------------------
清屏函数
------------------------------------------------*/
void LCD_Clear(void)
{
LCD_Write_Com(0x01);
DelayMs(5);
}
/*------------------------------------------------
写入字符串函数
------------------------------------------------*/
void LCD_Write_String(unsigned char x,unsigned char y,unsigned char *s)
{
if (y == 0)
{
LCD_Write_Com(0x80 + x); //表示第一行
}
else
{
LCD_Write_Com(0xC0 + x); //表示第二行
}
while (*s)
{
LCD_Write_Data( *s);
s ++;
}
}
/*------------------------------------------------
写入字符函数
------------------------------------------------*/
void LCD_Write_Char(unsigned char x,unsigned char y,unsigned char Data)
{
if (y == 0)
{
LCD_Write_Com(0x80 + x);
}
else
{
LCD_Write_Com(0xC0 + x);
}
LCD_Write_Data( Data);
}
/*------------------------------------------------
初始化函数
------------------------------------------------*/
void LCD_Init(void)
{
LCD_Write_Com(0x38); /*显示模式设置*/
DelayMs(5);
LCD_Write_Com(0x38);
DelayMs(5);
LCD_Write_Com(0x38);
DelayMs(5);
LCD_Write_Com(0x38);
LCD_Write_Com(0x08); /*显示关闭*/
LCD_Write_Com(0x01); /*显示清屏*/
LCD_Write_Com(0x06); /*显示光标移动设置*/
DelayMs(5);
LCD_Write_Com(0x0C); /*显示开及光标设置*/
}
/*------------------------------------------------
主函数
------------------------------------------------*/
// USER CODE END
void main(void)
{
// USER CODE BEGIN (Main,2)
// USER CODE END
MAIN_vInit();
// USER CODE BEGIN (Main,4)
LCD_Init();
LCD_Clear();//清屏
while (1)
{
// LCD_Write_Char(7,0,'o');
// LCD_Write_Char(8,0,'k');
LCD_Write_String(1,1,"www.hlmcu.com");
while(1);
}
// USER CODE END
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