- Sim800l Delete All Sms Email
- Sim800l Delete All Sms Free
- Sim800l Delete All Sms In Hindi
- Sim800l Delete All Sms In Outlook
- Try the below script in the AT Command Tester tool //Script: atcmgd.at //Use this script to AT+cmgd AT command //Get the command support AT+cmgd=? WAIT=2 //Delete SMS message at index 1 AT+cmgd=1 WAIT=1 //Delete SMS message at index 2 AT+cmgd=2 WAIT=1 //Delete SMS message at index 3 AT+cmgd=3 WAIT=1 //Delete all read messages SMS messages, leave unread //messages and stored MO messages.
- The SIM800L has a vendor specific command to delete all messages, this may clear up enough space for it to receive additional messages. To find out which mode you need to use. The modem responds with (1-6) or lists the responses in text mode. Then run AT+CMGDA=6 if the modem responded with numbers, or AT+CMGDA='DEL ALL'.
The PP3 battery you are trying to use is far from powerful enough to run a SIM800L. It's barely powerful enough to run an Arduino by itself for more than a couple of hours if you're lucky. The SIM800L, as the datasheet tells us, must be powered by a supply which can provide at least 2A. The power supply range of SIM800L is from 3.4V to 4.4V.
ATAT+CMGF=1
AT+CPMS='SM'
AT+CMGL = 'ALL'
63
AT
OK
AT+CMGF=1
OK
AT+CPMS='SM'
+CPMS: 2,25,2,25,2,2
The sim has two SMSes that can be viewed when you run the commands via USD
The code is
byte gsmDriverPin[3] ={3,4,5};
int numdata;
boolean started=false;
char smsbuffer[160];
char n[20];
String inData;
void setup() {
//pinMode(13, OUTPUT);
digitalWrite(5,HIGH);//Output GSM Timing
delay(1500);
digitalWrite(5,LOW);
digitalWrite(3,LOW);//Enable the GSM mode
digitalWrite(4,HIGH);//Disable the GPS mode
delay(2000);
mySerial.begin(9600); // the GPRS baud rate
mySerial.print('r');
delay(1000);
Serial.begin(9600); //set the baud rate
Sim800l Delete All Sms Email
delay(5000);//call ready
delay(5000);
delay(5000);
//Init the driver pins for GSM function
for(int i = 0 ; i < 3; i++)
{
pinMode(gsmDriverPin[i],OUTPUT);
}
}
void loop()
{
Serial.println('AT'); //AT is sent to the GSM / GPRS modem to test the connection
delay(2000);
//Serial.println('AT');
// p_char=Serial.read();
//Serial.write(p_char);
// delay(2000);
Serial.println('AT+CMGF=1'); //instruct the GSM/GPRS modem or mobile phone to operate in SMS text mode.
delay(2000);
// p_char=Serial.read();
//Serial.write(p_char);
delay(2000);
Serial.println('AT+CPMS='SM'); // instruct the GSM/GPRS modem or mobile phone to use the message storage area in the SIM card
delay(2000);
//Serial.write(Serial.read());
//delay(2000);
Serial.println('AT+CMGL = 'ALL'); //retrieve all SMS messages received
delay(2000);
if (Serial.available() )
{
int h=Serial.available();
Serial.println(h);
for (int i=0;i<h;i++)
{
inData += (char)Serial.read();
}
// if you are getting escape -characters try Serial.read(); here
//print it out
Serial.println(inData);
}
else
{
Serial.println('Not Available');
}
Sim800l Delete All Sms Free
while (1);
}
any ideas where I am going wrong
Sim800l Delete All Sms In Hindi
Tell the Arduino to send you a specified sensor data to your phone all via SMS. Used DHT11+MLX90614 for example
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About this project
Sponsored by: DigitSpace
Product used: SIM800L Module Replace SIM900A GSM GPRS 5V Serial with Antenna
Product used: SIM800L Module Replace SIM900A GSM GPRS 5V Serial with Antenna
Hello there, this is my third tutorial concerning SIM800L EVB version, make sure to take a look at previous ones, to not make this one long:
So here in this tutorial, I'm going to use the same module 'SIM800L EVB version' with Arduino Uno board, and I took for example 'DHT11' and 'MLX90614 contactless thermal sensor'.
And the idea is that I'm going to ask the Arduino via SMS to send me either the DHT values or the MLX values via SMS too, the project is relatively easy, the tricky part was to detect a substring withing the SMS content to be able to decide wheter the user asks for DHT values or MLX values.
HALT !!!
The Sim card used shouldn't be locked with a pin code otherwise use the AT commands to do it, and make sure you have enough credit to be able to send SMS... depends on your network provider.
This is the module I'm using:
And as said before the module works with AT commands, we saw some of them on the previous tutorials.
And for the power I'm using A Lithium Battery with A Buck converter:
Test 1
So the test #1 consist of just reading a SMS sent from the phone, and display it on the serial monitor.
Wiring
The wiring 1 can be found below, it's the basic wiring of the module, it's practical for all kind of tests.
Libraries
No special libraries are required here just the default SoftwareSerial.
Code
Code 1 can be found below.
The code is really easy first in the 'Setup()' we just send some 'AT commands' to make the module on the receiving text mode and set the way those SMS received should be handled.
And on the loop there is a classic communication function that permits the communication between the Arduino IDE Serial Monitor and Sim800L 'send/receive' between them
The functions used can be found in the code, but if you want to check them closely here's the document:
Result
Test 2
On the test#2 we will add DHT11 sensor and MLX90614 contactless thermal sensor... I used these two just as an example you can use whatever you want.
Sim800l Delete All Sms In Outlook
And in the code I integrated a part where I read the SMS received and check for the keywords 'DHT' or 'MLX'... and here of course you can replace it by your own or make a whole command i.e:'Send DHT data'.... to sum up with just look for a substring within a string :D
Wiring
The wiring 2 can be found below, we have just add the DHT11 and MLX90614
Libraries
Two libraries should be add (Because of the modules) depending on what you are using.
Code
Code 2 can be found below.
So in this code we:
- Set the module to receiving SMS mode
- Set the way to handle the SMS
- If something is received -> Transmit to Arduino
- Arduino will check for the 'Keywords' (DHT or MLX)
- If one of them is found -> check which one
- Make the reading
- Send the Data to the programmed phone number
Result
The use of the serial monitor is optional, the device can work without it, here used just to troubleshoot in case of a problem or to check the state.
The method we used is just to look for a specified keyword within the message, doesn't care what's being sent with it
Go further
You can improve the way to detect the keywords in the SMS sent, it will be useful to do other projects that will be more interesting.
You can do multiple readings before sending the SMS to be more precise.
Send error SMS in case the sensor is not working properly.
Check the code and if you have a better method for this share it with us, Thanks.
That's all folks.
Code
With comments to help you.
With comments to help you
Schematics
Author
SurtrTech
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Published on
January 18, 2020Write a comment
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