Arduino - punctual atom sim800c module

sim800c

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foreword

Recently, I need to use sim800c for a project, so let’s drive it with arduino.

When using sim800c, it’s better to use 12v1A power supply, so that the test will be very stable. Sometimes the communication of SMS and phone has a lot to do with the power supply. .
Use STXD and RTXD for wiring, remember to share the same ground, otherwise the communication will fail.

1. Arduino code

#include <SoftwareSerial.h>        // 采用软件的串口
 
SoftwareSerial SIM800C(10, 11);     // Serial RX, TX
boolean bState, bOldState;
int incomingByte = 0;               // for incoming serial data
int Infrared_NUM = 0;
 
void setup() {
    
    
  // put your setup code here, to run once:
  // Open serial communications and wait for port to open
  pinMode(13, OUTPUT);
  pinMode(12, OUTPUT);

  digitalWrite(13,LOW);
  digitalWrite(12,LOW);
  
  Serial.begin(9600);
  SIM800C.begin(9600);
}
 
void loop() {
    
    
  // put your main code here, to run repeatedly:
  if (SIM800C.available()) {
    
    
    Serial.write(SIM800C.read());
    digitalWrite(13, HIGH);// 如果通信成功，则把Arduino上面的L13 LED 灯打开
  }
  if (Serial.available()) {
    
    
    SIM800C.write(Serial.read());
//    incomingByte = Serial.read();
//    Serial.print("I received: ");
//    Serial.println(incomingByte, DEC);
//    digitalWrite(13, !digitalRead(13));
  }
     sendMeg();//发送短信例程代码
    SIM800C.println("AT");
     delay(2000);
    SIM800C.println("ATD173**********;\r");//12345678900改成你要拨打的电话号码


  
}
 
//发送短信例程代码
void sendMeg()
  {
    
    
   
  SIM800C.println("AT");
  delay(2000);
  SIM800C.println("AT+CMGF=1");
  delay(2000);
  SIM800C.println("AT+CMGS=\"173********\"");//这里改成你的号码 \"转义
  delay(2000);
  SIM800C.print("fire");//这里写内容
  delay(2000);
  SIM800C.write(0x1A);//发送：0x1A，即“CTRL+Z”的键值，用于告诉 SIM800C，要执行发送操作
                      //发送： 0x1B，即“ESC”的键值，用于告诉 SIM800C，取消本次操作，不执行发送。 
  }
 

The phone number filled in will receive calls and text messages.