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最近我在做单片机和GSM模块连接的实验.主要是想运用AT指令实现短信的收发，现在还在起始阶段，遇到一些编程方面的问题，向各位请教。<br />关于发送短信的命令比方说，我先把GSM模块和电脑串口相连，我在超级终端（或串口调试助手）里输入命令：<br />输入: AT<br />输出：OK<br />输入：AT+CMGF=0 （这里把它设为PDU格式）<br />输出：OK<br />输入：AT+CMGS=21<br />输出： ><br />输入：0891683108200505F011000D91683119032069F000000006C8329BFD0E01<br />接着按CTRL+Z短信就被发送<br />我想把这些转换成C语言，写入单片机，然后把单片机和电脑串口相连，<br />我看到一些介绍说是要把输入的命令都改写成ASCII形式，我试着写了下面的程序<br />#include <REG52.H><br />#include <stdio.h><br />void main(void)<br />{int i,j;<br />SCON = 0x50; <br />TMOD = 0x20; <br />TH1 = 0xFA; <br />TL1 = 0xFA;<br />TI = 1;<br />TR1 = 1;<br />printf("41H54H2BH43H4DH47H46H3DH30H0DH"); //AT+CMGF=0<br />for(i=0;i<=10000;i++)<br />for(j=0;j<=20;j++);<br />printf("41H54H2BH43H4DH47H53H3DH32H31H0DH"); //AT+CMGS=21<br />for(i=0;i<=10000;i++)<br />for(j=0;j<=20;j++);<br />printf("30H38H39H31H36H38H33H31H30H38H32H30H30H35H30H35H46H30H31H31H30H30H30H44H39H31H36H38H33H31H31H39H30H33H32H30H36H39H46H30H30H30H30H30H30H30H30H36H43H38H33H32H39H42H46H44H30H45H30H31H0DH"); //0891683108200505F011000D91683119032069F000000006C8329BFD0E01 <br />for(i=0;i<=10000;i++)<br />for(j=0;j<=10000;j++);<br />}<br />但是连接后gsm模块没有什么反应，希望能得到您的指点，我的程序哪里有问题，要发送短信需要怎样的步骤，谢谢你的指教<br /> |
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