谢谢大家,现在改成这样了,还有个小问题
#include <reg51.h>
#include <string.h>
void init_serialcomm(void)
{
SCON = 0x50; //SCON: serail mode 1, 8-bit UART, enable ucvr
TMOD |= 0x20; //TMOD: timer 1, mode 2, 8-bit reload
PCON |= 0x80; //SMOD=1;
TH1 = 0xF5; //Baud:9600 fosc=120MHz
IE |= 0x90; //Enable Serial Interrupt
TR1 = 1; // timer 1 run
// TI=1;
}
void send_char_com(unsigned char ch)
{
SBUF=ch;
while(TI==0);
TI=0;
}
main()
{
init_serialcomm();
send_char_com('a');
能在电脑上显示字符'a',但总连续显示,我本来想让让单片机只发送一次,再次请教各位大侠,程序哪个地方设置的不对
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楼主
