基于STM8单片机建立LCD1602操作库的程序

#define PORT_busy PB_DDR=0x00;PB_CR1=0xff;
#define busy PB_IDR


#define PORT_OUT PB_DDR=0xff;PB_CR1=0xff;
#define PORT PB_ODR
#define EN_SET ***i(PC_DDR,5);***i(PC_CR1,5);***i(PC_ODR,5);
#define EN_CLR ***i(PC_DDR,5);***i(PC_CR1,5);cbi(PC_ODR,5);


#define RW_SET ***i(PC_DDR,6);***i(PC_CR1,6);***i(PC_ODR,6);
#define RW_CLR ***i(PC_DDR,6);***i(PC_CR1,6);cbi(PC_ODR,6);


#define RS_SET ***i(PE_DDR,5);***i(PE_CR1,5);***i(PE_ODR,5);
#define RS_CLR ***i(PE_DDR,5);***i(PE_CR1,5);cbi(PE_ODR,5);
_Bool lcd1602_busy(void)
{
_Bool result;
RS_CLR;
RW_SET;
EN_SET;
delay(5);
PORT_busy;
result=(busy & 0x80);
EN_CLR;
return result;
}


void lcd1602_write_com(u8 com)
{
while(lcd1602_busy());
RS_CLR;
RW_CLR;
EN_CLR;
PORT_OUT;
PORT=com;
EN_SET;
delay(5);
EN_CLR;
}


void lcd1602_write_data(u8 dat)
{
while(lcd1602_busy());
RS_SET;
RW_CLR;
EN_CLR;
PORT_OUT;
PORT=dat;
EN_SET;
delay(5);
EN_CLR;
}


void lcd1602_gotoxy(u8 x,u8 y)
{
u8 add;
if(y==0)
add=0x80+x;
else
add=0xc0+x;
lcd1602_write_com(add);


}


void lcd1602_init(void)
{
delay(100);
lcd1602_write_com(0x38);
lcd1602_write_com(0x0c);
lcd1602_write_com(0x06);
lcd1602_write_com(0x01);
}




void lcd1602_display(void)
{
for(num=0;num<12;num++)
{
lcd1602_write_data(table[num]);
delay(5);
}
}