main3.c

基于at89c51单片机的mp3串口设计及通讯实验代码

#include "AT89C51SND1_REG.H"
#include "MCU_UART.H"

#define LED	     P3_5


main()
{
    char ch;
	init_uart();  //波特率9600
	printu("Welcome to JMBIE.\n");
	printu("感谢您对JMBIE的支持！\n");
	printuf("The Hex value of %dD is ",100);
	printuf("%xH\n",100);
	printu("\nExp3 please input some characters.\n");
	printu("a =LED light,b = LED blank.\n");

	while(1)
	{
		ch = uart_getch();
		if(ch=='\r')
			uart_putch('\n');
		uart_putch(ch);
		if(ch == 'a')
			LED = 0;
		if(ch == 'b')
		    LED = 1;
	}

}