c554.c

4510下的串口扩展

#include "c554.h"

void Init_St554(BYTE channel)
{
	*((volatile unsigned char *) (0x2200002+(channel<<3))) = 0xaf;
	delay(10);
	*((volatile unsigned char *) (0x2200002+(channel<<3))) = 0xa9|0x00;
	*((volatile unsigned char *) (0x2200004+(channel<<3))) = 0x08;  
	*((volatile unsigned char *) (0x2200003+(channel<<3))) = 0x83;    
         *((volatile unsigned char *) (0x2200000+(channel<<3))) = BAUDBASE;  
	*((volatile unsigned char *) (0x2200001+(channel<<3))) = 0;
	*((volatile unsigned char *) (0x2200003+(channel<<3))) = 0x03;
	*((volatile unsigned char *) (0x2200001+(channel<<3))) = 0x01; 
	delay(10);          	 
	IIR = *((volatile unsigned char *) (0x2200000+(channel<<3)));
}