单片机C语言 串口求教 求高手帮忙编一个程序要求:发送01时,灯1以400MS闪烁,发送02时,灯1以100MS闪烁

#include <reg51.h>
sbit LED = P1^0;
unsigned char DL=0;
void InitUART(void)
{
TMOD = 0x20;
SCON = 0x50;
TH1 = 0xFD;
TL1 = TH1;
PCON = 0x00;
EA = 1;
ES = 1;