rs232.c

来自「Software I2C implimntation」· C语言 代码 · 共 27 行

/**********************************************************************************************************
*									 RS-232 FUNCTIONS
*
* File name		: LCD.c
* Programmer 	: Vinay Kumar.Kondaparthi
* Language		: Keil C 8.xx  uVision3 IDE
* Hardware		: 89V51RD2 Controller and Max 232 RS232 driver
* Date			: Version 0.0 (20th FEB 2009)
*********************************************************************************************************
*											DESCRIPTION
*
* This module provides interface Rs232 Driver to Microcontroller.
*********************************************************************************************************
*/

#include"t89c51rd2.h"
#include"rs232.h"

void serial_init(void)
{

SCON = 0x50; /* uart in mode 1 (8 bit), REN=1 */								   
TMOD = TMOD | 0x20 ; /* Timer 1 in mode 2 */
TH1 = 0xFD; /* 9600 Bds at 11.059MHz */
TL1 = 0xFD; /* 9600 Bds at 11.059MHz */
TR1 = 1; /* Timer 1 run */
}