M5Stack/examples/Modules/COM_SigFox/COM_SigFox.ino

/*
 * SPDX-FileCopyrightText: 2025 M5Stack Technology CO LTD
 *
 * SPDX-License-Identifier: MIT
 */
/*
 * @Hardwares: M5Core + Module COMX SigFox
 * @Platform Version: Arduino M5Stack Board Manager v2.1.3
 * @Dependent Library:
 * M5Stack@^0.4.6: https://github.com/m5stack/M5Stack
 */

#include <M5Stack.h>

// Description: Get device ID,PAC and Send "00FFEE" to Dongle.

#define rxPin 16
#define txPin 17

// Set to 0 if you don't need to see the messages in the console
#define DEBUG 1

// Message buffer
uint8_t msg[12];

// the setup function runs once when you press reset or power the board
void setup()
{
    M5.begin();
    Serial2.begin(9600, SERIAL_8N1, rxPin, txPin);

    delay(2000);
    getID();
    delay(1000);
    getPAC();
    delay(1000);
}

// the loop function runs over and over again forever
void loop()
{
    Serial2.write("AT$SF=00FFEE\r\n");
    delay(60000);
}

// Get Sigfox ID
String getID()
{
    String id = "";
    char output;

    Serial2.write("AT$I=10\r\n");
    while (!Serial2.available()) {
    }
    while (Serial2.available()) {
        output = Serial2.read();
        id += output;
        delay(10);
    }

    if (DEBUG) {
        Serial.println("Sigfox Device ID: ");
        Serial.println(id);
        M5.Lcd.println(id);
    }

    return id;
}

// Get PAC number
String getPAC()
{
    String pac = "";
    char output;

    Serial2.write("AT$I=11\r\n");
    while (!Serial2.available()) {
    }

    while (Serial2.available()) {
        output = Serial2.read();
        pac += output;
        delay(10);
    }

    if (DEBUG) {
        Serial.println("PAC number: ");
        Serial.println(pac);
        M5.Lcd.println(pac);
    }

    return pac;
}