mega2560做的SIM900A模块接收任意短信后发送短信。为什么不行
本帖最后由 ruan2570406 于 2016-3-21 15:04 编辑#include <Arduino.h>
boolean test_boot=false;
boolean test_net_register=false;
const int LED = 13;
const int Power_key=2;
void setup()
{
pinMode(LED, OUTPUT);
pinMode(Power_key, OUTPUT);
Serial.begin(9600);
Serial1.begin(9600);
digitalWrite(Power_key,LOW);
}
void loop()
{
receiveMessage();
}
/*.................................*/
void SendMessage()
{
Serial.println("begin!");
//GSM启动
digitalWrite(Power_key,HIGH);
delay(1000);
digitalWrite(Power_key,LOW);
//测试GSM是否启动
while(test_boot==false)
{
Serial1.println("AT");
while (Serial1.available() > 0)
{
char comdata;
comdata = char(Serial1.read());
delay(2);
if(comdata='K')
test_boot=true;
}
delay(300);
}
Serial.println("boot is ok!");
//测试SIM卡是否已经注册网络
while(test_net_register==false)
{
Serial1.println("AT+COPS?");
unsigned char comdata;
unsigned char GSMDATA_count=0;
while (Serial1.available() > 0)
{
unsigned char comdata_bytes;
comdata_bytes = char(Serial1.read());
delay(2);
if(comdata_bytes=='\n')
{
if(comdata=='C')
test_net_register=true;
GSMDATA_count=0;
}
else
{
comdata =comdata_bytes;
GSMDATA_count++;
}
}
delay(1000);
}
Serial.println("sim register is ok!");
Serial1.println("AT+CMGF=1");
delay(200);
Serial1.println("AT+CSMP=17,167,2,25");
delay(200);
Serial1.println("AT+CSCS=\"UCS2\"");
delay(200);
Serial1.println("AT+CMGS=\"00310030003000380036\"");//此处填写的是自己的手机号码
delay(200);
Serial1.print("006C006F006E0020003100320031002E003400380037002C006C00610074002000320039002E003800390032");
delay(200);
Serial1.write(30);
delay(200);
Serial.println("send over!");
delay(30000);
//关闭GSM
digitalWrite(Power_key,HIGH);
delay(1000);
digitalWrite(Power_key,LOW);
digitalWrite(LED,LOW);
delay(1000);
digitalWrite(LED,HIGH);
delay(1000);
}
/*.........................*/
void receiveMessage()
{
if(Serial1.available() > 0 )
{
SendMessage();
}
}
以上是程序 我想用mega2560+sim900A做一个手机发送一条任意一条短信给SIM900A模块然后模块再返回一条短信。
为什么手机收不到短信。光发送短信是可以的，而且我
if(Serial1.available() > 0 )
{
SendMessage();
}
通过蓝牙接串口1是可以实现的，我把sim900A接串口调试软件然后发送短信是也是有提示的
但是我接sim900a就收不到短信呢？
求大神帮忙QQ495679329.
我把sim900A接串口调试软件然后发送短信是有提示的
:L:L:L:L:L
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