serio.c

单片机控制LCD1602液晶显示的驱动程序

/*******************************************************************/
#include "serio.h"
#include "reg52.h"
#include "lcd1602.h"
#define uchar unsigned char
#define uint32 unsigned long
uchar count=0;
/*******************************************************************/
void UART0_Init()//initial uart
{
SCON  = 0x50;       //SCON: serail mode 1, 8-bit UART, REN=1,Buard＝(2^SMOD)(Timer1 溢出率 )/32 
TMOD |= 0x20;       //TMOD:timer1 mode 2，8位reload 
PCON |= 0x80;       //SMOD=1; 
TH1   = 0xFD;       //fosc=11.0592MHz,smod=0, Baud:4.8k--TH:F4,9.6K--TH:FD; 
TL1   = 0xFD;       //fosc=11.0592MHz,smod=1, Baud:19.2K--TH:FD; 
IE   |= 0x90;       //ea=1,es=1,Enable Serial Interrupt 
TR1   = 1;          // timer 1 run 
}
/*******************************************************************/
void UART0_SendByte(uchar da)//send one byte to pc
{
EA  =  0;
SBUF = da;
while(TI==0);
TI=0;
EA = 1;
}
/******************************************************************/
void UART0_SendStr(uchar  *str)//send one string to pc
{
uchar i;
i=0;
while((*(str+i))!='\0')
	{
	UART0_SendByte(*(str+i));
	i=i+1;
	}
}