Sim800L cannot Init error

Deanr · February 17, 2022, 3:30pm

I have moved it to the top but it still has a connection error


#define BLYNK_TEMPLATE_ID "TMPLrKAvPedF"
#define BLYNK_DEVICE_NAME "Dev 2 GSM"
#define BLYNK_AUTH_TOKEN "OTQ0an_SSlPvkE6r7fZU46h2IZx0mxPi"
//-----------------------------------------------------------------------
/* Comment this out to disable prints and save space */
#define BLYNK_PRINT Serial
#define BLYNK_DEBUG
//-----------------------------------------------------------------------

//-----------------------------------------------------------------------
// Select your modem:
#define TINY_GSM_MODEM_SIM800
//#define TINY_GSM_MODEM_SIM900
//#define TINY_GSM_MODEM_M590
//#define TINY_GSM_MODEM_A6
//#define TINY_GSM_MODEM_A7
//#define TINY_GSM_MODEM_BG96
//#define TINY_GSM_MODEM_XBEE
//-----------------------------------------------------------------------
// Default heartbeat interval for GSM is 60
// If you want override this value, uncomment and set this option:
//#define BLYNK_HEARTBEAT 30
//-----------------------------------------------------------------------
#include <TinyGsmClient.h>
#include <BlynkSimpleTinyGSM.h>
//-----------------------------------------------------------------------
// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = BLYNK_AUTH_TOKEN;
//-----------------------------------------------------------------------
// Your GPRS credentials
// Leave empty, if missing user or pass
char apn[]  = "lte.vodacom.za";
char user[] = "";
char pass[] = "";
//-----------------------------------------------------------------------
// Hardware Serial on Mega, Leonardo, Micro
//#define SerialAT Serial1
//-----------------------------------------------------------------------
// or Software Serial on Uno, Nano
#include <SoftwareSerial.h>
SoftwareSerial SerialAT(2, 3); // RX, TX
TinyGsm modem(SerialAT);
//-----------------------------------------------------------------------
#include <DHT.h>
#define DHT11_PIN 4
#define DHTTYPE DHT11
DHT dht(DHT11_PIN, DHTTYPE);
//-----------------------------------------------------------------------
BlynkTimer timer;
#define INTERVAL 1000L
//-----------------------------------------------------------------------



/************************************************************************************
 *  This function sends Arduino's up time every second to Virtual Pin.
 *  In the app, Widget's reading frequency should be set to PUSH. This means
 *  that you define how often to send data to Blynk App.
 **********************************************************************************/
void SendDhtData()
{
  //-----------------------------------------------------------------------
  //Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
  float h = dht.readHumidity();
  //-----------------------------------------------------------------------
  //Read temperature as Celsius (the default)
  float t = dht.readTemperature();
  //-----------------------------------------------------------------------
  // Check if any reads failed and exit early (to try again).
  if (isnan(h) || isnan(t)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }
  //-----------------------------------------------------------------------
  //Compute heat index in Celsius (isFahreheit = false)
  float hic = dht.computeHeatIndex(t, h, false);
  //-----------------------------------------------------------------------
  Serial.print("Temperature: ");
  Serial.println(t);
  Serial.print("Humidity: ");
  Serial.println(h);
  Serial.println("------------------------------------------");
  //-----------------------------------------------------------------------
  // You can send any value at any time.
  // Please don't send more that 10 values per second.
  Blynk.virtualWrite(V0, t);
  Blynk.virtualWrite(V1, h);
  //-----------------------------------------------------------------------
}


/************************************************************************************
 *  setup() function
 **********************************************************************************/
void setup()
{
  //-----------------------------------------------------------
  // Debug console
  Serial.begin(115200);
  delay(10);
  //-----------------------------------------------------------
  // Set GSM module baud rate
  SerialAT.begin(9600);
  //SerialAT.begin(9600,SWSERIAL_8N1,D3,D4);
  delay(3000);
  //-----------------------------------------------------------
  dht.begin();
  //-----------------------------------------------------------
  // Restart takes quite some time
  // To skip it, call init() instead of restart()
  Serial.println("Initializing modem...");
  //modem.restart();
  // Unlock your SIM card with a PIN
  //modem.simUnlock("1234");
  //-----------------------------------------------------------
Blynk.begin(auth, modem, apn, user, pass, "blynk-cloud.com", 8080);
  //-----------------------------------------------------------
  // Setup a function to be called every second
  timer.setInterval(INTERVAL, SendDhtData);
  //-----------------------------------------------------------  
}


/************************************************************************************
 *  loop() function
 **********************************************************************************/
void loop()
{
  Blynk.run();
  timer.run();
}

John93 · February 17, 2022, 3:32pm

blynk-cloud.com belongs to the old blynk, now it’s blynk.cloud

Deanr · February 17, 2022, 3:42pm

I have changed it to

  // To skip it, call init() instead of restart()
  Serial.println("Initializing modem...");
  //modem.restart();
  // Unlock your SIM card with a PIN
  //modem.simUnlock("1234");
  //-----------------------------------------------------------
Blynk.begin(auth, modem, apn, user, pass, "blynk.cloud", 8080);
  //-----------------------------------------------------------
  // Setup a function to be called every second
  timer.setInterval(INTERVAL, SendDhtData);
  //-----------------------------------------------------------  
}

But still get an Login timeout

PeteKnight · February 17, 2022, 3:52pm

You should probably be using port 80, not 8080, but I’d just go with…

Blynk.begin(auth, modem, apn, user, pass);

Pete.

PeteKnight · February 17, 2022, 3:55pm

And if that doesn’t work then you should probably read this…

Pete.

Deanr · February 21, 2022, 11:59am

Hi Pete

I managed to get it to connect with a global sim card, the issue was with Vodacom.
I now have a error
13:56:03.389 → [33099] >ny3.blynk.cloud[00]80
13:56:03.389 → [33099] Redirecting to ny3.blynk.cloud:80
13:56:03.482 → [33185] Connecting to ny3.blynk.cloud:80
13:56:04.700 → [34425] <[1D|00|01|00] JKKBMrNTb6SM12jWdBtilx6gEFzhASCd
13:56:05.447 → [35168] >[00|00|01|00|C8]
13:56:05.447 → [35169] Ready (ping: 641ms).
13:56:05.447 → [35170] Free RAM: 598
13:56:05.447 → [35171] >[14|00|01|00|08]
13:56:05.447 → [35173] >pm[00]3[00]out
13:56:05.541 → [35236] <[11|00|02|00|8C]ver[00]1.0.1[00]h-beat[00]60[00]buff-in[00]256[00]dev[00]Arduino Uno[00]cpu[00]ATmega328P[00]con[00]SIM800[00]fw-type[00]TMPLV2vFKdqU[00]build[00]Feb 21 2022 13:55:16[00]tmpl[00]TMPLV2vFKdqU[00]
13:56:06.581 → [36269] Cmd error

Please see my code below


#define BLYNK_TEMPLATE_ID "TMPLV2vFKdqU"
#define BLYNK_DEVICE_NAME "Dev1"
#define BLYNK_AUTH_TOKEN "JKKBMrNTb6SM12jWdBtilx6gEFzhASCd"
//-----------------------------------------------------------------------
/* Comment this out to disable prints and save space */
#define BLYNK_PRINT Serial
#define BLYNK_DEBUG
//-----------------------------------------------------------------------

//-----------------------------------------------------------------------
// Select your modem:
#define TINY_GSM_MODEM_SIM800
//#define TINY_GSM_MODEM_SIM900
//#define TINY_GSM_MODEM_M590
//#define TINY_GSM_MODEM_A6
//#define TINY_GSM_MODEM_A7
//#define TINY_GSM_MODEM_BG96
//#define TINY_GSM_MODEM_XBEE
//-----------------------------------------------------------------------
// Default heartbeat interval for GSM is 60
// If you want override this value, uncomment and set this option:
//#define BLYNK_HEARTBEAT 30
//-----------------------------------------------------------------------
#include <TinyGsmClient.h>
#include <BlynkSimpleTinyGSM.h>
#include "DFRobot_INA219.h"
//-----------------------------------------------------------------------
// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = BLYNK_AUTH_TOKEN;
//-----------------------------------------------------------------------
// Your GPRS credentials
// Leave empty, if missing user or pass
char apn[]  = "Justworx";
char user[] = "";
char pass[] = "";
//-----------------------------------------------------------------------
// Hardware Serial on Mega, Leonardo, Micro
//#define SerialAT Serial1
//-----------------------------------------------------------------------
// or Software Serial on Uno, Nano
#include <SoftwareSerial.h>
SoftwareSerial SerialAT(2, 3); // RX, TX
TinyGsm modem(SerialAT);
//-----------------------------------------------------------------------
#include <DHT.h>
#define DHT11_PIN 7
#define DHTTYPE DHT22
DHT dht(DHT11_PIN, DHTTYPE);
DFRobot_INA219_IIC     ina219(&Wire, INA219_I2C_ADDRESS4);

//-----------------------------------------------------------------------

//-----------------------------------------------------------------------
BlynkTimer timer;
#define INTERVAL 1000L

//-----------------------------------------------------------------------
float busvoltage = 0;
float ina219Reading_mA = 1000;
float extMeterReading_mA = 1000;
//-----------------------------------------------------------------------


/************************************************************************************
 *  This function sends Arduino's up time every second to Virtual Pin.
 *  In the app, Widget's reading frequency should be set to PUSH. This means
 *  that you define how often to send data to Blynk App.
 **********************************************************************************/


void SendDhtData()
{
  //-----------------------------------------------------------------------
  //Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
  float h = dht.readHumidity();
  //-----------------------------------------------------------------------
  //Read temperature as Celsius (the default)
  float t = dht.readTemperature();
  //-----------------------------------------------------------------------
 float Voltage = ina219.getBusVoltage_V();
 //------------------------------------------------------------------------
 
  // Check if any reads failed and exit early (to try again).
  if (isnan(h) || isnan(t)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }
  //-----------------------------------------------------------------------
  //Compute heat index in Celsius (isFahreheit = false)
  float hic = dht.computeHeatIndex(t, h, false);
  //-----------------------------------------------------------------------
  Serial.print("Temperature: ");
  Serial.println(t);
  Serial.print("Humidity: ");
  Serial.println(h);
  Serial.println("------------------------------------------");
  //-----------------------------------------------------------------------
  // You can send any value at any time.
  // Please don't send more that 10 values per second.
  Blynk.virtualWrite(V5, t);
  Blynk.virtualWrite(V6, h);
  Blynk.virtualWrite(V2,Voltage);
  //-----------------------------------------------------------------------
}


/************************************************************************************
 *  setup() function
 **********************************************************************************/
void setup()
{
  //-----------------------------------------------------------
  // Debug console
  Serial.begin(115200);
  delay(10);
  //-----------------------------------------------------------
  // Set GSM module baud rate
  SerialAT.begin(9600);
  //SerialAT.begin(9600,SWSERIAL_8N1,D3,D4);
  delay(3000);
  //-----------------------------------------------------------
  dht.begin();
  //-----------------------------------------------------------
  // Restart takes quite some time
  // To skip it, call init() instead of restart()
  Serial.println("Initializing modem...");
  //modem.restart();
  // Unlock your SIM card with a PIN
  //modem.simUnlock("1234");
  //-----------------------------------------------------------
  Serial.println();
  while (ina219.begin() != true) {
    Serial.println("INA219 begin faild");
    delay(2000);
  }
  ina219.linearCalibrate(ina219Reading_mA, extMeterReading_mA);
  Serial.println();
  
  //-----------------------------------------------------------
Blynk.begin(auth, modem, apn, user, pass);
  //-----------------------------------------------------------
  // Setup a function to be called every second
  timer.setInterval(INTERVAL, SendDhtData);
  //-----------------------------------------------------------  
}


/************************************************************************************
 *  loop() function
 **********************************************************************************/
void loop()
{
  Blynk.run();
  timer.run();
}

PeteKnight · February 21, 2022, 1:14pm

That seems like a very low number.

Pete.

Deanr · February 21, 2022, 1:40pm

Would that cause the Cmd Error?

Deanr · February 22, 2022, 5:59am

I am using the same code with an ethernet shield an it is working

psoro · February 22, 2022, 7:55pm

It seems you are commenting the lines where SIM800 is being initialized…
Use mode.init() or modem.restart(), but use one of them…

HTH

Deanr · February 23, 2022, 8:38am

Would that affect the cmd error