Un programme pour recevoir des SMS sur l'ESP32

Cette fois le programme est plus "opérationnel", il s'agit de recevoir des SMS sur le module ESP32-SIM800. Ainsi, on pourra envoyer des commandes depuis un tel pouvant déclencher des actions sur l'ESP32.

Voici le code, qui s'appuie sur la bibliothèque AsyncSMS. Ce code envoie un accusé de réception "BIEN RECU".

Nous pourrons revenir sur tout cela en atelier, avec de plus amples explications.

https://github.com/centaq/arduino-async-sms

// Please select the corresponding model

// #define SIM800L_IP5306_VERSION_20190610
// #define SIM800L_AXP192_VERSION_20200327
// #define SIM800C_AXP192_VERSION_20200609
  #define SIM800L_IP5306_VERSION_20200811



#include "AsyncSMS.h"
#include "utilities.h"

#define SerialMon Serial
#define SerialAT  Serial1


AsyncSMS smsHelper(&SerialAT, 115200);

void messageReceived(char * number, char * message) {
  //Do something with your message
  Serial.println("Message received");
  Serial.println(number);
  Serial.println(message);
  // envoyer un message d'acquittement à l'émetteur
  String numberString = String(number); // Convertir en String
  Serial.println(numberString.c_str());
  smsHelper.send(numberString.c_str(), "BIEN RECU", 10);
}

void setup() {
  // Set console baud rate
  SerialMon.begin(115200);

  // Set GSM module baud rate and UART pins
  SerialAT.begin(115200, SERIAL_8N1, MODEM_RX, MODEM_TX);

  setupModem();
  smsHelper.init();
  smsHelper.smsReceived = *messageReceived;
}

void loop() {
  smsHelper.process();
}

Ajouter ce code en tant que fichier "utilities.h"

#include <Wire.h>

#if defined(SIM800L_IP5306_VERSION_20190610)

#define MODEM_RST             5
#define MODEM_PWRKEY          4
#define MODEM_POWER_ON       23
#define MODEM_TX             27
#define MODEM_RX             26

#define I2C_SDA              21
#define I2C_SCL              22
#define LED_GPIO             13
#define LED_ON               HIGH
#define LED_OFF              LOW

#define IP5306_ADDR          0x75
#define IP5306_REG_SYS_CTL0  0x00

// setPowerBoostKeepOn
bool setupPMU()
{
    bool en = true;
    Wire.begin(I2C_SDA, I2C_SCL);
    Wire.beginTransmission(IP5306_ADDR);
    Wire.write(IP5306_REG_SYS_CTL0);
    if (en) {
        Wire.write(0x37); // Set bit1: 1 enable 0 disable boost keep on
    } else {
        Wire.write(0x35); // 0x37 is default reg value
    }
    return Wire.endTransmission() == 0;
}


#elif defined(SIM800L_AXP192_VERSION_20200327)

#define MODEM_RST            5
#define MODEM_PWRKEY          4
#define MODEM_POWER_ON       23
#define MODEM_TX             27
#define MODEM_RX             26
#define MODEM_DTR            32
#define MODEM_RI             33

#define I2C_SDA              21
#define I2C_SCL              22
#define LED_GPIO             13
#define LED_ON               HIGH
#define LED_OFF              LOW


#elif defined(SIM800C_AXP192_VERSION_20200609)
// pin definitions
#define MODEM_PWRKEY          4
#define MODEM_POWER_ON       25
#define MODEM_TX             27
#define MODEM_RX             26
#define MODEM_DTR            32
#define MODEM_RI             33

#define I2C_SDA              21
#define I2C_SCL              22
#define LED_GPIO             12
#define LED_ON               LOW
#define LED_OFF              HIGH

#elif defined(SIM800L_IP5306_VERSION_20200811)


#define MODEM_RST             5
#define MODEM_PWRKEY          4
#define MODEM_POWER_ON       23
#define MODEM_TX             27
#define MODEM_RX             26

#define MODEM_DTR            32
#define MODEM_RI             33

#define I2C_SDA              21
#define I2C_SCL              22
#define LED_GPIO             13
#define LED_ON               HIGH
#define LED_OFF              LOW

#define IP5306_ADDR          0x75
#define IP5306_REG_SYS_CTL0  0x00

// setPowerBoostKeepOn
bool setupPMU()
{
    bool en = true;
    Wire.begin(I2C_SDA, I2C_SCL);
    Wire.beginTransmission(IP5306_ADDR);
    Wire.write(IP5306_REG_SYS_CTL0);
    if (en) {
        Wire.write(0x37); // Set bit1: 1 enable 0 disable boost keep on
    } else {
        Wire.write(0x35); // 0x37 is default reg value
    }
    return Wire.endTransmission() == 0;
}

#else

#error "Please select the corresponding model"

#endif


#if defined(SIM800L_AXP192_VERSION_20200327) || defined(SIM800C_AXP192_VERSION_20200609)
#include <axp20x.h>         //https://github.com/lewisxhe/AXP202X_Library

AXP20X_Class axp;

bool setupPMU()
{
// For more information about the use of AXP192, please refer to AXP202X_Library https://github.com/lewisxhe/AXP202X_Library
    Wire.begin(I2C_SDA, I2C_SCL);
    int ret = axp.begin(Wire, AXP192_SLAVE_ADDRESS);

    if (ret == AXP_FAIL) {
        Serial.println("AXP Power begin failed");
        return false;
    }

    //! Turn off unused power
    axp.setPowerOutPut(AXP192_DCDC1, AXP202_OFF);
    axp.setPowerOutPut(AXP192_LDO2, AXP202_OFF);
    axp.setPowerOutPut(AXP192_LDO3, AXP202_OFF);
    axp.setPowerOutPut(AXP192_DCDC2, AXP202_OFF);
    axp.setPowerOutPut(AXP192_EXTEN, AXP202_OFF);

    //! Do not turn off DC3, it is powered by esp32
    // axp.setPowerOutPut(AXP192_DCDC3, AXP202_ON);

    // Set the charging indicator to turn off
    // Turn it off to save current consumption
    // axp.setChgLEDMode(AXP20X_LED_OFF);

    // Set the charging indicator to flash once per second
    // axp.setChgLEDMode(AXP20X_LED_BLINK_1HZ);


    //! Use axp192 adc get voltage info
    axp.adc1Enable(AXP202_VBUS_VOL_ADC1 | AXP202_VBUS_CUR_ADC1 | AXP202_BATT_CUR_ADC1 | AXP202_BATT_VOL_ADC1, true);

    float vbus_v = axp.getVbusVoltage();
    float vbus_c = axp.getVbusCurrent();
    float batt_v = axp.getBattVoltage();
    // axp.getBattPercentage();   // axp192 is not support percentage
    Serial.printf("VBUS:%.2f mV %.2f mA ,BATTERY: %.2f\n", vbus_v, vbus_c, batt_v);

    return true;
}

#endif



void setupModem()
{

    // Start power management
    if (setupPMU() == false) {
        Serial.println("Setting power error");
    }

#ifdef MODEM_RST
    // Keep reset high
    pinMode(MODEM_RST, OUTPUT);
    digitalWrite(MODEM_RST, HIGH);
#endif

    pinMode(MODEM_PWRKEY, OUTPUT);
    pinMode(MODEM_POWER_ON, OUTPUT);

    // Turn on the Modem power first
    digitalWrite(MODEM_POWER_ON, HIGH);

    // Pull down PWRKEY for more than 1 second according to manual requirements
    digitalWrite(MODEM_PWRKEY, HIGH);
    delay(100);
    digitalWrite(MODEM_PWRKEY, LOW);
    delay(1000);
    digitalWrite(MODEM_PWRKEY, HIGH);

    // Initialize the indicator as an output
    pinMode(LED_GPIO, OUTPUT);
    digitalWrite(LED_GPIO, LED_OFF);
}