I am trying to send SMS via a SIM 808 GSM Module. After using AT+CMEE = 1, I am getting CMS +CMS ERROR: 604.
AT + CMGL command is working fine but I am still not able to send SMS.
Here's the code :
#include<msp430.h>
void sms()
{
Serial.println("AT\r");
delay(1000);
Serial.println("AT+CMGF = 1\r");
delay(1000);
Serial.println("AT+CMGL = \"ALL\"\r");
Serial.println("AT+CMEE = 1\r");
Serial.println(" AT+CMGS =\"+91xxxxxxxxxx\"\r");
delay(1000);
Serial.println("HELLO WORLD");
delay(1000);
Serial.println((char)26);
delay(100);
}
void setup(){
Serial.begin(9600);
sms();
}
void loop(){
}
I have tested the code below. It worked. It was the \r's.
Shorter delays ok..
Serial.println("AT");
delay(50);
Serial.println("AT+CMGF=1");
delay(50);
Serial.println("AT+CMEE=1");
delay(50);
Serial.println("AT+CMGS=\"1xxxxxxxxxx\"");
delay(50);
Serial.println("HELLO WORLD");
delay(50);
Serial.println((char)26);
I am looking into your issues. First, and possibly the basis of all issues, you do not need the \r in a println.
Serial.println("AT+CMEE = 1") is proper way to send to SIM 808. I have a sim 808 online and will test what you have. I have just mastered the SMS world with my SIM 808 so this won't take long.
dy3
Related
I wanted to test out the send sms first before creating my project. I was able to test the calling function, it work out fine but sending sms gives me an error "+CME ERROR: invalid input value"
I tried to google it out to fix it but there are no forums that could help me with it. I did not create the code, i was able to follow tutorials from websites.. but here is the code
#include <SoftwareSerial.h>
SoftwareSerial SIM900A(10,11);
void setup()
{
SIM900A.begin(9600); // Setting the baud rate of GSM Module
Serial.begin(9600); // Setting the baud rate of Serial Monitor (Arduino)
Serial.println ("SIM900A Ready");
delay(100);
Serial.println ("Type s to send message or r to receive message");
}
void loop()
{
if (Serial.available()>0)
switch(Serial.read())
{
case 's':
SendMessage();
break;
case 'r':
RecieveMessage();
break;
}
if (SIM900A.available()>0)
Serial.write(SIM900A.read());
}
void SendMessage()
{
Serial.println ("Sending Message");
SIM900A.println("AT+CMGF=1"); //Sets the GSM Module in Text Mode
delay(1000);
Serial.println ("Set SMS Number");
SIM900A.println("AT+CMGS=\"+6281542787536\"\r"); //Mobile phone number to send message
delay(1000);
Serial.println ("Set SMS Content");
SIM900A.println("Good morning, how are you doing?");// Messsage content
delay(100);
Serial.println ("Finish");
SIM900A.println((char)26);// ASCII code of CTRL+Z
delay(1000);
Serial.println ("Message has been sent ->SMS Selesai dikirim");
}
void RecieveMessage()
{
Serial.println ("SIM900A Membaca SMS");
delay (1000);
SIM900A.println("AT+CNMI=2,2,0,0,0"); // AT Command to receive a live SMS
delay(1000);
Serial.write ("Unread Message done");
}
here is my arduino outputarduino output
hoping you could help me here.. if there are any lacking details i should send. i am glad to send it to you. thank you
I have an AI Thinker A9G module connected to an ESP8266 D1 mini. I have the following script to send and receive AT commands to/from the module. The idea is to get a SMS with the Google maps GPS location of the module onto my mobile phone.
// GPS tracker with AI Thinker A9G module and AZ Delivery D1 Mini ESP8266 module
#include <SoftwareSerial.h>
#define rxPin D7
#define txPin D8
SoftwareSerial A9modem(rxPin, txPin); // Pins D7 Rx and D8 Tx are used as used as software serial pins
String incomingData; // For storing incoming serial data
String gpsData; // For storing location data
char msg;
char call;
void setup()
{
Serial.begin(115200); // Baud rate for serial monitor
A9modem.begin(115200); // Baud rate for GSM shield
Serial.println("GPS/GSM A9G BEGIN");
Serial.println("Enter character for control option: ");
Serial.println("h : to disconnect a call");
Serial.println("s : to send a message");
Serial.println("r : to receive a message");
Serial.println("c : to make a call");
Serial.println("l : to read location");
Serial.println("d : to disconnect gps");
Serial.println();
delay(100);
// Set SMS mode to text mode
A9modem.print("AT+CMGF=1\r");
delay(100);
// Set GSM module to TP show the output on serial out
A9modem.print("AT+CNMI=2,2,0,0,0\r");
delay(100);
}
void loop()
{
ReceiveMessage();
gpsData = incomingData.substring(33, 52);
Serial.print("Location: ");
Serial.println(gpsData);
delay(2000);
if (Serial.available() > 0)
switch(Serial.read())
{
case 's':
SendMessage();
break;
case 'r':
ReceiveMessage();
break;
case 'c':
MakeCall();
break;
case 'h':
HangupCall();
break;
case 'l':
ReadLocation();
break;
case 'd':
DisconnectGps();
break;
}
}
void ReceiveMessage()
{
if (A9modem.available() > 0)
{
incomingData = A9modem.readString(); // Get the data from the serial port
Serial.print(incomingData);
delay(100);
}
}
void SendMessage()
{
A9modem.println("AT+CMGF=1"); // Sets the GSM Module into text mode
delay(1000); // Delay of one second
A9modem.println("AT+CMGS=\"xxxxxxxxxxxxx\"\r"); // Replace your mobile number here
delay(1000);
String sms = "http://maps.google.com/maps?q=" + gpsData; // Create the SMS location string
A9modem.println(sms);
delay(100);
A9modem.println((char)26); // ASCII code of CTRL+Z
delay(1000);
}
void MakeCall()
{
A9modem.println("ATD+xxxxxxxxxxxxx;"); // Replace your mobile number here
Serial.println("Calling "); // Print response over serial port
delay(1000);
}
void HangupCall()
{
A9modem.println("ATH");
Serial.println("Hangup Call");
delay(1000);
}
void DisconnectGps()
{
A9modem.println("AT+GPS=0");
Serial.println("Disconnect GPS");
delay(1000);
}
void ReadLocation()
{
A9modem.println("AT+GPS=1");
delay(1000);
A9modem.println("AT+LOCATION=2"); // Check location every two seconds
delay(2000);
}
So if I use the commands "l" and "s" in Arduino IDE serial monitor everything is working well but I don't know how to change the code in a way that I get a fully automated GPS tracker. The idea is the following: Power on starts the tracker. When gpsData string is not empty the first SMS will be send to my mobile phone. The next SMS follows 20 minutes later and so on until power is switched off. Could you help please?
Thanks in advance!
Finally I came up with this solution but I'm not very happy with it (it is working but I have to restart the module from time to time because there are no GPS data). There are 3 reasons for this: There is no error handling for the GPS function, I set the delays in a more ore less random way to get everything working but I don't know if the values make sense and I don't know if the substring() function is the best way to get the location from the serial response.
// GPS tracker with AI Thinker A9G module and AZ Delivery D1 Mini
ESP8266 module
#include <SoftwareSerial.h>
#define rxPin D7
#define txPin D8
SoftwareSerial A9modem(rxPin, txPin); // Pins D7 Rx and D8 Tx are used as used as software serial pins
String incomingData; // For storing incoming serial data
String gpsData; // For storing location data
int runGps = 1;
int sendSms = 0;
void setup()
{
pinMode(LED_BUILTIN, OUTPUT); // Use builtin LED for correct GPS status
Serial.begin(115200); // Baud rate for serial monitor
A9modem.begin(115200); // Baud rate for GSM shield
// Set SMS mode to text mode
A9modem.print("AT+CMGF=1\r");
delay(300);
// Set GSM module to TP show the output on serial out
A9modem.print("AT+CNMI=2,2,0,0,0\r");
delay(1000);
Serial.end();
delay(500);
}
void loop()
{
Serial.begin(115200);
ReceiveMessage(); // Start a new serial stream
gpsData = incomingData.substring(33, 52); // Strip all unnessesary data from the stream
Serial.print("Location: "); // Check if the location data are correct
Serial.println(gpsData);
delay(1000);
if(runGps == 1) { // Start GPS
ReadLocation();
delay(20000); // Wait for GPS to be ready
}
if(gpsData.length() == 19 && sendSms == 0) { // If the location string is correct send SMS
if (isdigit(gpsData.charAt(0))) { // Check if the stream starts with a number
SendMessage();
digitalWrite(LED_BUILTIN, HIGH);
delay(300);
digitalWrite(LED_BUILTIN, LOW);
delay(300);
digitalWrite(LED_BUILTIN, HIGH);
delay(300);
digitalWrite(LED_BUILTIN, LOW);
delay(300);
digitalWrite(LED_BUILTIN, HIGH);
}
}
if(runGps == 0 && sendSms == 1) {
runGps = 1;
sendSms = 0;
delay(6000); // Make sure that all SMS serial communication is over
while (A9modem.available()) {
A9modem.read(); // Delete all data from serial buffer
}
delay(300000); // If SMS was sent wait 5 minutes before running the main loop again
Serial.end();
delay(500);
}
}
void ReceiveMessage()
{
if (A9modem.available() > 0)
{
incomingData = A9modem.readString(); // Get the data from the serial port
Serial.print(incomingData);
delay(500);
}
}
void SendMessage()
{
sendSms = 1; // Stop starting the SendMessage function
A9modem.println("AT+CMGF=1"); // Sets the GSM Module into text mode
delay(1000);
A9modem.println("AT+CMGS=\"xxxxxxxxxx\"\r"); // Replace your mobile number here
delay(1000);
String sms = "http://maps.google.com/maps?q=" + gpsData; // Create the SMS string
A9modem.println(sms);
delay(500);
A9modem.println((char)26); // ASCII code of CTRL+Z
delay(500);
}
void ReadLocation()
{
runGps = 0; // Stop starting the ReadLocation function
A9modem.println("AT+GPS=1");
delay(1000);
A9modem.println("AT+LOCATION=2"); // Check location every two seconds
delay(2000);
}
Try turning ON the NMEA stream from the A9G. Say you want to get the NMEA data every t seconds, you can add and then call the following function once in the void setup()
void TurnOnNMEA(int t)
{
if(t > 3600)
t = 3600; // Because the max time is 3600s
A9modem.print("AT+GPSRD=");
A9modem.println(t);
while(!A9modem.available()); // wait till the A9G sends a response
char c;
while(A9modem.available())
{
c = A9modem.read();
Serial.print(c);
delay(2); // Time needed for the next character
}
}
This will start the NMEA data stream every t seconds which you can print using the following function,
void ReadNMEA()
{
char c; // Read each character from the stream as it comes
if(A9modem.available())
{
c = A9modem.read();
Serial.print(c);
delay(2); // Time needed for the next character
}
}
Parsing and decoding the NMEA is a bit tricky thing to do. There is a lot of information inside it and the decoding depends on what you want to do with it. If you just want the location, you can parse the $GNGGA line.
When parsing the data, DO NOT USE Arduino String() class. It is a very bad idea when handling this kind of stream. Instead, use char array.
I'm desperately looking for a solution for my SIM800l v2. The network LED just keeps blinking every second. It does not restart but it keeps blinking and not picking up a signal.
I tried powering up using a laptop USB port but it does not solve it. I also used a charger adapter that is 5V and 2A but still does not solve the problem. I also tried changing the sim card but still does not solve the problem.
Here is the Wiring diagram that I followed:
Credits to miliohm.com
Code:
SoftwareSerial sim(10, 11);
int _timeout;
String _buffer;
String number = "+6281222329xxx"; //-> change with your number
void setup() {
//delay(7000); //delay for 7 seconds to make sure the modules get the signal
Serial.begin(9600);
_buffer.reserve(50);
Serial.println("Sistem Started...");
sim.begin(9600);
delay(1000);
Serial.println("Type s to send an SMS, r to receive an SMS, and c to make a call");
}
void loop() {
if (Serial.available() > 0)
switch (Serial.read()) {
case 's':
SendMessage();
break;
case 'r':
RecieveMessage();
break;
case 'c':
callNumber();
break;
}
if (sim.available() > 0)
Serial.write(sim.read());
}
void SendMessage() {
//Serial.println ("Sending Message");
sim.println("AT+CMGF=1"); //Sets the GSM Module in Text Mode
delay(200);
//Serial.println ("Set SMS Number");
sim.println("AT+CMGS=\"" + number + "\"\r"); //Mobile phone number to send message
delay(200);
String SMS = "Hello, how are you? greetings from miliohm.com admin";
sim.println(SMS);
delay(100);
sim.println((char)26);// ASCII code of CTRL+Z
delay(200);
_buffer = _readSerial();
}
void RecieveMessage() {
Serial.println ("SIM800L Read an SMS");
sim.println("AT+CMGF=1");
delay(200);
sim.println("AT+CNMI=1,2,0,0,0"); // AT Command to receive a live SMS
delay(200);
Serial.write ("Unread Message done");
}
String _readSerial() {
_timeout = 0;
while (!sim.available() && _timeout < 12000) {
delay(13);
_timeout++;
}
if (sim.available()) {
return sim.readString();
}
}
void callNumber() {
sim.print (F("ATD"));
sim.print (number);
sim.print (F(";\r\n"));
_buffer = _readSerial();
Serial.println(_buffer);
}
I was also stuck on this for ages. Got a DC-DC converter to ensure I had the right voltage. I connected caps on both sides of the DC-DC. I tried most everything to no avail.
My issue in the end was the inefficiency of breadboards and jumper wires. So if you are using a breadboard or jumper wires, shorten them as much as possible, like 2-3cm to ensure that enough current can be delivered to the SIM800L module
Try to connect a cap as close as possible between Vcc and GND. If the module connects to the network after you entered the SIM pin the current rises and may causes a voltage drop.
I am trying to control a LED from Thingspeak server by using the GSM module.
The data received is successfully being printed on serial monitor(which is '1' as last updated) but when I am trying to assign that data to a variable so as to control the inbuilt LED of Arduino, nothing happens.
#include <SoftwareSerial.h>
SoftwareSerial SIM900A(10, 11);
void setup()
{
pinMode(LED_BUILTIN, OUTPUT);
SIM900A.begin(9600);
Serial.begin(9600);
while (!Serial)
;
Serial.println("Arduino is ready");
SIM900A.begin(9600);
Serial.println("SIM900A started at 9600");
delay(1000);
Serial.println("Setup Complete");
}
void loop()
{
SIM900A.println("AT");
delay(1000);
ShowSerialData();
SIM900A.println("AT+CIPSHUT");
delay(2000);
ShowSerialData();
SIM900A.println("AT+CIPMUX=0");
delay(2000);
ShowSerialData();
SIM900A.println("AT+CGATT=1");
delay(5000);
SIM900A.println("AT+CSTT=\"INTERNET\",\"\",\"\"");
delay(4000);
SIM900A.println("AT+CIICR");
delay(3000);
ShowSerialData();
SIM900A.println("AT+CIFSR");
delay(5000);
ShowSerialData();
SIM900A.println("AT+CIPSTART=\"TCP\",\"184.106.153.149\",\"80\"");
delay(4000);
ShowSerialData();
SIM900A.println("AT+CIPSEND");
delay(4000);
SIM900A.print("GET /channels/798173/fields/1/last");
SIM900A.print("\r\n\x1A");
ShowSerialData();
char led = SIM900A.read();
Serial.print(led);
if (led == '1')
{
digitalWrite(LED_BUILTIN, HIGH);
}
else if (led == '0')
{
digitalWrite(LED_BUILTIN, LOW);
}
delay(8000);
}
void ShowSerialData()
{
while (SIM900A.available() != 0)
Serial.print(char(SIM900A.read()));
}
Last portion of the output from the serial monitor:
CONNECT OK
AT+CIPSEND
> ⸮GET /channels/798173/fields/1/last
SEND OK
1
As pointed out by #Saurabh P Bhandari, you cannot read the same data from the serial twice, thus you'd need to read the data in a variable in the first place if you wish to use it.
String getSerialData(){
String buffer="";
while (SIM900A.available() ){
char c = SIM900A.read();
buffer+=c;
}
return buffer;
}
Then you can use String led = getSerialData() to populate led with the buffer.
Here, you need to beware that the function getSerialData would return anything present on the buffer and would look something like:
GET /channels/798173/fields/1/last
SEND
HTTP RESPONSE
It appears that you're only interested in HTTP RESPONSE, thus you can update your conditionals to be
if(led.endsWith("1"))
...
else if(led.endsWith("0"))
From what I have understood so far, in this snippet
SIM900A.print("GET /channels/798173/fields/1/last");
SIM900A.print("\r\n\x1A");
ShowSerialData();
ShowSerialData() is printing the output which is '1'. Then immediately your are reading data into the variable led. Since, the actual data received is being printed already from ShowSerialData(), the next time you call SIM900A.read() will return either nothing or next set of data being sent by your module.
You are likely getting rate limited because you are hitting ThingSpeak servers too frequently. You can only update a channel once every 15s with a free account. Obviously, it makes no sense to ask for a value faster than it can be updated, i.e., once every 15s with a free account.
Consider putting some required delays in your code to ensure your device is not blacklisted for abuse of terms.
#include <SoftwareSerial.h>
SoftwareSerial mySerial(0, 1);
void setup()
{
mySerial.begin(9600); // Setting the baud rate of GSM Module
Serial.begin(9600); // Setting the baud rate of Serial Monitor (Arduino)
delay(100);
}
void loop()
{
if (Serial.available()>0)
SendMessage();
if (mySerial.available()>0)
Serial.write(mySerial.read());
}
void SendMessage()
{
mySerial.println("AT+CMGF=1"); //Sets the GSM Module in Text Mode
delay(1000); // Delay of 1000 milli seconds or 1 second
mySerial.println("AT+CMGS=\"+1876xxxxxxx\"\r"); // Replace x with mobile number
delay(1000);
mySerial.println("I am SMS from GSM Module");// The SMS text you want to send
delay(100);
mySerial.println((char)26);// ASCII code of CTRL+Z
delay(1000);
}
I am trying to send a sms using SIM 800 RPI GSM ADD-on v2.3 module through the arduino platform however everything I try fails. Please assist and explain where i am going wrong. Thank you. My code is above. Thanks
You are missing a carriage return in "AT+CMGF=1".
Change "AT+CMGF=1" to "AT+CMGF=1\r"
Although having delays between command works and suffices the purpose but is not recommended.
It is preferable to catch and analyze the messages returned by the SIM800 especially in case of error has occurred.