使用Keil 注册过的
IDE-Version:
礦ision3 V3.34
Copyright (c) Keil Elektronik GmbH / Keil Software, Inc. 1995 - 2006
License Information:
mao hall
ailansoft
LIC=EXT9L-0FAGJ-ANFAZ-Y4U1E-SBXW4-CKWPP
Tool Version Numbers:
Toolchain Path: E:\Program Files\Keil\C51\BIN\
C Compiler: C51.Exe V8.06
Assembler: A51.Exe
Linker/Locator: BL51.Exe V6.05
Librarian: LIB51.Exe V4.24
Hex Converter: OH51.Exe V2.6
CPU DLL: S8051.DLL V3.10
Dialog DLL: DP51.DLL V2.48f
Target DLL: BIN\VDM51.DLL
Dialog DLL: TP51.DLL V2.48f
下面是我的程序::
#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit LED0 = P1^0;
sbit LED1 = P1^1;
sbit Sw = P1^2;
uchar buffer[8];
uchar sign = 0;
uchar rev_num = 0;
void delay(uint time)
{
int i = 1000;
for(time;time>0;time--)
for(i;i>0;i--);
}
void UART_init() /*串口初始化*/
{
SCON = 0x50; /*串行口工作方式1,10位异步收发*/
TMOD =0x20; /* TMOD: timer 1, mode 2, 8-bit reload */
TH1 = 243; /* TH1: reload value for 2400 baud @ 6MHz */
TL1 = 243;
PCON = 0x80; /*波特率加倍*/
RI = 0; //清收发标志
TI = 0;
TR1 = 1; /*启动T/C1*/
}
void serial() interrupt 4
{
RI=0;
buffer[rev_num] = SBUF;
rev_num += 1;
if(rev_num > 6)
{
sign = rev_num;
rev_num &= 0x00;
}
}
void main()
{
uchar i=0;
P0 = 0;
P2 = 0;
P1 = 0;
LED0 = 1;
LED1 = 1;
Sw = 1;
UART_init();
EA=1;
ES=1; //开串口中断
while(1)
{
if(sign>0 )
{
SBUF = 'A';
while(!TI);
TI = 0;
for(i=0;i< sign;i++)
{
SBUF = buffer;
TI = 0;
while(!TI);
SBUF = i + 0x30;
TI = 0;
while(!TI);
}
sign &= 0x00;
LED1 = ~LED1;
sign &= 0x00;
delay(1000);
}else{
delay(20000);
LED0 = ~LED0;
LED1 = 1;
}
}
}
这是整个代码,我想从PC发一个字符串,然后单片机接收到再把整个字符串发给PC机,但是这样实际却不是这样.
比如我发送abcdefg,单片机发回来是ggggggg,并且一直隔几百ms就发送一次,停不下来.并且并不是执行整个for循环,只发送g,而不发送'A'.
请问各位,问题出在哪里呢????
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