[Arduino IDE demo source code for KC868-A8S]--#12-Send SMS to many phone numbers

[admin]

This demo source code, you just replace with your 10 phone numbers, then will send one SMS to 10 mobile phone, you can also send to many many mobile phone number in loop() function.
   
   
// make sure set your Serial2 pins in your "HardwareSerial.cpp" for ESP32 as follows:
//#define RX2  15
//#define TX2  13

   

Code:

//code use for KC868-A8S board

int data;
String message;
unsigned long int last;

void setup()
{
String phone1,phone2,phone3,phone4,phone5,phone6,phone7,phone8,phone9,phone10;
Serial.begin(115200);
Serial2.begin(115200);
 
 
  Serial.print("start test");
  phone1="15381100000";
  phone2="15381100001";
  phone3="15381100002";
  phone4="15381100003";
  phone5="15381100004";
  phone6="15381100005";
  phone7="15381100006";
  phone8="15381100007";
  phone9="15381100008";
  phone10="15381100009";
 
  send_sms("Test message from KinCony KC868-A8S",phone1);
  send_sms("Test message from KinCony KC868-A8S",phone2);
  send_sms("Test message from KinCony KC868-A8S",phone3);
  send_sms("Test message from KinCony KC868-A8S",phone4);
  send_sms("Test message from KinCony KC868-A8S",phone5);
  send_sms("Test message from KinCony KC868-A8S",phone6);
  send_sms("Test message from KinCony KC868-A8S",phone7);
  send_sms("Test message from KinCony KC868-A8S",phone8);
  send_sms("Test message from KinCony KC868-A8S",phone9);
  send_sms("Test message from KinCony KC868-A8S",phone10);

}

void loop()
{
check_sms_responce();
}

void send_sms ( String sms, String number)
{
      Serial2.print("AT+CMGF=1\r");  //Set text mode
      delay(1000);
      Serial2.print("AT+CMGS=\""+ number +"\"\r"); //Send message
      delay(1000);
      Serial2.print(sms);//Text message
      Serial2.println((char)0x1A); //Ctrl+Z
}

void check_sms_responce()
{
   if(Serial2.available()>0)
  {
    delay(60);
    message="";
    while(Serial2.available())
    {
      message+=(char)Serial2.read();
    }
    Serial.print(message);
  }
}