在调试ST72F561和PC上位机的串口通讯,程序如下,单片机向上位机发送16进制数0x32,结果在上位机总是显示00 00 00.请指点!注:ST72F561是LINSCI通讯接口,这是不是和平常遇到的有所不同?
#include "ST72_F_561_A_R9.h"
#define SR_TC 0x40
#define CR2_TCIE 0x40
#define CR2_TE 0x08
typedef unsigned char uchar;
uchar *OutString;
void SCISend(unsigned char Data);
void main(void)
{
//PDDDR=0x00;
//PDOR=0x00;
//SCI1ETPR = 0;
SCI2BRR =0xd2; // 设置发送接收波特率为9600
SCI2CR1 = 0; // 允许SCI，1个停止位，8个数据位，一个结束位，无奇偶校
SCI2CR2=0x2C; //enable TE,RE,RIE
SCISend(0x32); // 发送字符串
}
void SCISend(unsigned char Data)
{
unsigned char SCItemp;
SCItemp=SCI2SR; //it's used to clear TDRE which is useful for the check of sending process
SCI2DR=Data;
while((SCI2SR&0x80)!=0x80);
}
|
楼主
标题置顶
标题高亮
