Can you help me in this project

MajidMohammed · April 30, 2023, 2:23pm

Can you help me in this project? The problem that I have is that I want to fulfill the condition that the phone number only accepts the one from which the message was sent in the setup() .

#include <GPRS_Shield_Arduino.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <DFRobot_DHT11.h>

boolean started = false;
#define PIN_RX 11
#define PIN_TX 10
GPRS gprs(PIN_TX, PIN_RX, 9600);
int pos = 0;
#define MESSAGE_LENGTH 190
char smsbuffer[MESSAGE_LENGTH];
char n[16];
char p[16];
char phone[16];
char datetime[24];
char mytemp[40];
char myhum[40];

#define restgprs 38
DFRobot_DHT11 DHT;
#define DHT11_PIN 30
#define SIGNAL_PIN A0

#define LED1 34
#define LED2 35
#define LED3 36
#define LED4 37

#define FAN1 42
#define FAN2 43
#define FAN3 44
#define FAN4 45

LiquidCrystal_I2C lcd(0x27, 20, 4);
float v = 0.0;
float in_v = 0.0;
float R1 = 30000.0;
float R2 = 7500.0;
float v_value = 0;
float r_voltage = 5.0;
float AcsValue = 0.0;

void setup() {
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);
  pinMode(LED4, OUTPUT);
  pinMode(FAN1, OUTPUT);
  pinMode(FAN2, OUTPUT);
  pinMode(FAN3, OUTPUT);
  pinMode(FAN4, OUTPUT);
  pinMode(restgprs, OUTPUT);
  digitalWrite(LED1, HIGH);
  digitalWrite(LED2, HIGH);
  digitalWrite(LED3, HIGH);
  digitalWrite(LED4, HIGH);
  digitalWrite(FAN1, HIGH);
  digitalWrite(FAN2, HIGH);
  digitalWrite(FAN3, HIGH);
  digitalWrite(FAN4, HIGH);
  digitalWrite(restgprs, HIGH);
  lcd.init();
  lcd.backlight();
  Serial.begin(9600);
  delay(1000);
  if (gprs.init()) {
    deletsms();
    lcd.setCursor(1, 0);
    lcd.print("I'm waiting");
    lcd.setCursor(1, 1);
    lcd.print("Send: my phone");
    Serial.println("I'm waiting");
    pos = gprs.isSMSunread();
    gprs.readSMS(pos, smsbuffer, MESSAGE_LENGTH, p, datetime);
    if (!strcmp(smsbuffer, "My phone")) {
      Serial.println(p);
      Serial.println(smsbuffer);
      sprintf(phone, p);
      Serial.println(phone);
      gprs.sendSMS(p, "I saved your number");
      gprs.deleteSMS(pos);
      lcd.clear();
      lcd.setCursor(1, 0);
      lcd.print("saved");
      delay(1000);
      Serial.println("\nstatus = READY");
      started = true;
    } else {
      delay(1000);
      return (setup());
    }
  } else {
    digitalWrite(restgprs, LOW);
    Serial.println("\nstatus = NOT READY");
    delay(3000);
    return (setup());
  }
}

void loop() {
  if (started) {

    v_value = analogRead(SIGNAL_PIN);
    v = (v_value * r_voltage) / 1024.0;
    in_v = v / (R2 / (R1 + R2));
    AcsValue = in_v * (r_voltage / 1024) * 2.25;
    readsms();
    lcdsh();
    if (v_value < 100) {
      gprs.sendSMS(phone, "There is a fault with the volt");
      delay(1000);
    }
    if (DHT.temperature > 35) {
      /* digitalWrite(LED1, HIGH);
          digitalWrite(LED2, HIGH);
          digitalWrite(LED3, HIGH);*/
      digitalWrite(LED4, HIGH);
      gprs.sendSMS(phone, "The temperature level is high\r lights turned off");
    }
    if (DHT.temperature < 18) {
      //digitalWrite(LED1, LOW);
      digitalWrite(LED2, LOW);
      //digitalWrite(LED3, LOW);
      //digitalWrite(LED4, LOW);
      gprs.sendSMS(phone, "The heat level is low\r lights turned on");
    }
    if (DHT.humidity > 80) {
      //digitalWrite(FAN1, LOW);
      //digitalWrite(FAN2, LOW);
      //digitalWrite(FAN3, LOW);
      digitalWrite(FAN4, LOW);
      gprs.sendSMS(phone, "The humidity level is high\r fans turned on");
    }
    if (DHT.humidity < 45) {
      /*digitalWrite(FAN1, HIGH);
            digitalWrite(FAN2, HIGH);
            digitalWrite(FAN3, HIGH);*/
      digitalWrite(FAN4, HIGH);
      gprs.sendSMS(phone, "The humidity level is low\r fans turned off");
    }
  }
}

void lcdsh() {
  DHT.read(DHT11_PIN);
  lcd.begin(16, 2);
  lcd.print("temp:");
  lcd.print(DHT.temperature);
  lcd.print(" humi:");
  lcd.print(DHT.humidity);
  if (v_value < 100) {
    lcd.setCursor(0, 1);
    lcd.print("V:");
    lcd.print(0.00);
    lcd.print("  A:");
    lcd.print(0.00);
  } else {
    lcd.setCursor(0, 1);
    lcd.print("V:");
    lcd.print(in_v);
    lcd.print("  A:");
    lcd.print(AcsValue);
  }
}

void readsms() {
  sprintf(mytemp, "temp: %d", DHT.temperature);
  sprintf(myhum, "humidity: %d", DHT.humidity);
  pos = gprs.isSMSunread();
  if (pos > 0) {
    gprs.readSMS(pos, smsbuffer, MESSAGE_LENGTH, n, datetime);
    /* if (n != phone) {
      //Serial.println(n);
     
      //return (setup());
    } 
     else {*/
    if (n == phone) {
      if (!strcmp(smsbuffer, "Read sensor")) {
        Serial.println(smsbuffer);
        gprs.sendSMS(phone, mytemp);
        gprs.sendSMS(phone, myhum);
        //gprs.deleteSMS(pos);
      }
      if (!strcmp(smsbuffer, "Open all led")) {
        Serial.println(smsbuffer);
        digitalWrite(LED1, LOW);
        digitalWrite(LED2, LOW);
        /*digitalWrite(LED3, LOW);
      digitalWrite(LED4, LOW);*/
        gprs.sendSMS(phone, "Light turned on successfully");
        //gprs.deleteSMS(pos);
      }
      if (!strcmp(smsbuffer, "Close all led")) {
        Serial.println(smsbuffer);
        digitalWrite(LED1, HIGH);
        digitalWrite(LED2, HIGH);
        digitalWrite(LED3, HIGH);
        digitalWrite(LED4, HIGH);
        gprs.sendSMS(phone, "Light turned off successfully");
        // gprs.deleteSMS(pos);
      }
      if (!strcmp(smsbuffer, "Open all fan")) {
        Serial.println(smsbuffer);
        /*digitalWrite(FAN1, LOW);
      digitalWrite(FAN2, LOW);*/
        digitalWrite(FAN3, LOW);
        digitalWrite(FAN4, LOW);
        gprs.sendSMS(phone, "Fans turned on successfully");
        // gprs.deleteSMS(pos);
      }
      if (!strcmp(smsbuffer, "Close all fan")) {
        Serial.println(smsbuffer);
        digitalWrite(FAN1, HIGH);
        digitalWrite(FAN2, HIGH);
        digitalWrite(FAN3, HIGH);
        digitalWrite(FAN4, HIGH);
        gprs.sendSMS(phone, "Fans turned off successfully");
        //gprs.deleteSMS(pos);
      }
    } else {
      gprs.sendSMS(n, "Sorry, the phone number is unknown");
      gprs.deleteSMS(pos);
    }
  }
}

void deletsms() {
  for (int i = 0; i < 20; i++) {
    //pos = gprs.isSMSunread();
    if (pos != 0) {
      Serial.println("delsms");
      Serial.print("\nFind SMS at the pos ");
      Serial.println(pos);
      if (gprs.deleteSMS(pos) == 1) {
        Serial.print("\nDeleted SMS at the pos ");
        Serial.println(pos);
      } else {
        Serial.print("\nCant del SMS at the pos ");
        Serial.println(pos);
        return (setup());
      }
    }
  }
}

UKHeliBob · April 30, 2023, 2:29pm

Welcome to the forum

            return (setup());

What is the purpose of these lines of code ?

jremington · April 30, 2023, 2:39pm

Instead of the above, which will probably crash an Arduino, use a while loop.

The while condition for exit should be success in obtaining the desired data.

johnwasser · April 30, 2023, 3:43pm

You can't directly compare two character arrays. If the arrays contain strings then you would use the 'strcmp()' function:

    if (strcmp(n, phone) != 0) // n does not match phone
    {
      Serial.println(n);
      return;
    } 
    else // n is equal to phone
    {

MajidMohammed · April 30, 2023, 4:30pm

I tested it, but it tells me that the phone number is wrong even though it is the same number sent from it.

johnwasser · April 30, 2023, 5:47pm

Show us your serial output.

anon56112670 · April 30, 2023, 5:54pm

Better still, show how your code looks now.

MajidMohammed · May 2, 2023, 8:52am

Unfortunately, no solution worked. I will remove this option from the project. Thank you all.

#include <GPRS_Shield_Arduino.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <DFRobot_DHT11.h>

boolean started = false;
#define restgprs 38
#define PIN_RX 11
#define PIN_TX 10
GPRS gprs(PIN_TX, PIN_RX, 9600);
int pos = 0;
#define MESSAGE_LENGTH 190
char smsbuffer[MESSAGE_LENGTH];
char n[16];
char p[16];
char datetime[24];
char mytemp[40];
char myhum[40];

DFRobot_DHT11 DHT;
#define DHT11_PIN 30
#define SIGNAL_PIN A0
#define SIGNAL_AMP A8

#define LED1 34
#define LED2 35
#define LED3 36
#define LED4 37

#define FAN1 42
#define FAN2 43
#define FAN3 44
#define FAN4 45

LiquidCrystal_I2C lcd(0x27, 20, 4);
float v = 0.0;
float in_v = 0.0;
float R1 = 30000.0;
float R2 = 7500.0;
float v_value = 0;
float r_voltage = 5.0;
double  AcsValue = 0.0;

void setup() {
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);
  pinMode(LED4, OUTPUT);
  pinMode(FAN1, OUTPUT);
  pinMode(FAN2, OUTPUT);
  pinMode(FAN3, OUTPUT);
  pinMode(FAN4, OUTPUT);
  pinMode(restgprs, OUTPUT);
  digitalWrite(LED1, HIGH);
  digitalWrite(LED2, HIGH);
  digitalWrite(LED3, HIGH);
  digitalWrite(LED4, HIGH);
  digitalWrite(FAN1, HIGH);
  digitalWrite(FAN2, HIGH);
  digitalWrite(FAN3, HIGH);
  digitalWrite(FAN4, HIGH);
  digitalWrite(restgprs, HIGH);
  lcd.init();
  lcd.backlight();
  Serial.begin(9600);
  if (gprs.init()) {
    //deletsms();
    lcd.setCursor(1, 0);
    lcd.print("I'm waiting");
    lcd.setCursor(1, 1);
    lcd.print("Send: my phone");
    Serial.println("I'm waiting");
    pos = gprs.isSMSunread();
    gprs.readSMS(pos, smsbuffer, MESSAGE_LENGTH, p, datetime);
    if (!strcmp(smsbuffer, "My phone")) {
      Serial.println(smsbuffer);
      Serial.println(p);
      gprs.sendSMS(p, "I saved your number");
      gprs.deleteSMS(pos);
      lcd.clear();
      lcd.setCursor(1, 0);
      lcd.print("It's saved");
      Serial.println("\nstatus = READY");
      started = true;
    } else {
      gprs.deleteSMS(pos);
      return (setup());
    }
  } else if (!gprs.init()) {
    digitalWrite(restgprs, LOW);
    Serial.println("\nstatus = NOT READY");
    delay(3000);
    return (setup());
  }
}

void loop() {
  if (started) {
    v_value = analogRead(SIGNAL_PIN);
    v = (v_value * r_voltage) / 1024.0;
    in_v = v / (R2 / (R1 + R2));
    AcsValue = in_v * (R2 / (R1 + R2))/2.5;
    readsms();
    lcdsh();
    if (in_v < 5.5) {
      gprs.sendSMS(p, "There is a fault with the volt");
      delay(1000);
    }
    if (DHT.temperature > 35) {
      digitalWrite(LED1, HIGH);
      digitalWrite(LED2, HIGH);
      digitalWrite(LED3, HIGH);
      digitalWrite(LED4, HIGH);
      gprs.sendSMS(p, "temperature is high\r lights turned off");
    }
    if (DHT.temperature < 15) {
      digitalWrite(LED1, LOW);
      digitalWrite(LED2, LOW);
      digitalWrite(LED3, LOW);
      digitalWrite(LED4, LOW);
      gprs.sendSMS(p, "temperature is low\r lights turned on");
    }
    if (DHT.humidity > 70) {
      digitalWrite(FAN1, LOW);
      digitalWrite(FAN2, LOW);
      digitalWrite(FAN3, LOW);
      digitalWrite(FAN4, LOW);
      gprs.sendSMS(p, "humidity is high\r fans turned on");
    }
    if (DHT.humidity < 35) {
      digitalWrite(FAN1, HIGH);
      digitalWrite(FAN2, HIGH);
      digitalWrite(FAN3, HIGH);
      digitalWrite(FAN4, HIGH);
      gprs.sendSMS(p, "humidity is low\r fans turned off");
    }
  }
}

void lcdsh() {
  DHT.read(DHT11_PIN);
  lcd.begin(16, 2);
  lcd.print("temp:");
  lcd.print(DHT.temperature);
  lcd.print(" humi:");
  lcd.print(DHT.humidity);
  if (v_value < 100) {
    lcd.setCursor(0, 1);
    lcd.print("V:");
    lcd.print(0.00);
  } else {
    lcd.setCursor(0, 1);
    lcd.print("V:");
    lcd.print(in_v);
  }
  if (v_value < 100) {
    lcd.print("  A:");
    lcd.print(0.00);
  } else {
    lcd.print("  A:");
    lcd.print(AcsValue);
  }
}

void readsms() {
  sprintf(mytemp, "temp: %d", DHT.temperature);
  sprintf(myhum, "humidity: %d", DHT.humidity);
  pos = gprs.isSMSunread();
   gprs.readSMS(pos, smsbuffer, MESSAGE_LENGTH, n, datetime);
  if (pos > 0) {
   
    if (!strcmp(smsbuffer, "Read sensor")) {
      Serial.println(smsbuffer);
      gprs.sendSMS(p, mytemp);
      gprs.sendSMS(p, myhum);
      gprs.deleteSMS(pos);
    }
    if (!strcmp(smsbuffer, "Open all led")) {
      Serial.println(smsbuffer);
      digitalWrite(LED1, LOW);
      digitalWrite(LED2, LOW);
      digitalWrite(LED3, LOW);
      digitalWrite(LED4, LOW);
      gprs.sendSMS(p, "Light turned on successfully");
      gprs.deleteSMS(pos);
    }
    if (!strcmp(smsbuffer, "Close all led")) {
      Serial.println(smsbuffer);
      digitalWrite(LED1, HIGH);
      digitalWrite(LED2, HIGH);
      digitalWrite(LED3, HIGH);
      digitalWrite(LED4, HIGH);
      gprs.sendSMS(p, "Light turned off successfully");
      gprs.deleteSMS(pos);
    }
    if (!strcmp(smsbuffer, "Open all fan")) {
      Serial.println(smsbuffer);
      digitalWrite(FAN1, LOW);
      digitalWrite(FAN2, LOW);
      digitalWrite(FAN3, LOW);
      digitalWrite(FAN4, LOW);
      gprs.sendSMS(p, "Fans turned on successfully");
      gprs.deleteSMS(pos);
    }
    if (!strcmp(smsbuffer, "Close all fan")) {
      Serial.println(smsbuffer);
      digitalWrite(FAN1, HIGH);
      digitalWrite(FAN2, HIGH);
      digitalWrite(FAN3, HIGH);
      digitalWrite(FAN4, HIGH);
      gprs.sendSMS(p, "Fans turned off successfully");
      gprs.deleteSMS(pos);
    }
    deletsms();
  }
}
void deletsms() {
  for (int i = 0; i <= 5; i++) {
    if (pos != 0) {
      gprs.readSMS(pos, smsbuffer, MESSAGE_LENGTH, p, datetime);
      Serial.println(smsbuffer);
      Serial.println(pos);
      gprs.deleteSMS(pos);
      Serial.println("delete SMS");
      pos--;
      return (loop());
    }
  }
}

anon56112670 · May 2, 2023, 9:01am

You've got that, in a (nominally) six iteration for loop.
What do expect to happen?

system · October 29, 2023, 9:02am

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Can you help me in this project

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