sim900a | SIM900A chipsetli gsm modüllerinde EU ve TR simcardlarını
kandi X-RAY | sim900a Summary
kandi X-RAY | sim900a Summary
SIM900A chipsetli gsm modüllerinde EU ve TR simcardlarını çalıştırabilmeniz için gerekli olan firmaware upgrade aracı ve firmwareler. USB UART Kablosu ile RX ucunu TX'e VE TX ucunuda RX'e bağlayarak bilgisayarınıza bağlayın. daha sonra hangi porttan okuduğuna bakarak çalıştırdığınız uygulama içerisinden o portu seçin ( COM4 gibi ) ve firmaware seçip upgrade işlemini başlatın.
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Community Discussions
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QUESTION
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.
...ANSWER
Answered 2019-Jun-12 at 12:47From what I have understood so far, in this snippet
QUESTION
I am new to arduino and gsm sim900, and I currently working with the project when student scan their barcode it will input attendance to database and send sms to their guardians. My issue is when I try to input different numbers like "serial.available" and "readString(phonenumber)" it wont send a message, I get no errors and the sim have e-load/. Sorry for bad grammar. Here is the code:
...ANSWER
Answered 2020-Mar-06 at 09:24If you read the SoftwareSerial Library documentation, you will noticed it said:
The library has the following known limitations:
Not all pins on the Mega and Mega 2560 support change interrupts, so only the following can be used for RX: 10, 11, 12, 13, 14, 15, 50, 51, 52, 53, A8 (62), A9 (63), A10 (64), A11 (65), A12 (66), A13 (67), A14 (68), A15 (69).
So change your line on SoftwareSerial SIM900A(6,7); to something else than pin 6 and 7.
QUESTION
I am using raspberry Pi 3 for sending SMS using SIM900A. I configured Gammu to send SMS via SIM900A and it worked fine. But I was able to send only 156 characters(Max). I need to send more than 200 characters.
Command I used : " echo 'MESSAGE' | sudo gammu sendsms TEXT +91XXXXXXXXXX"
Is there any way to do that? I am open for both AT commands and Gammu way.
Thanks in advance...
P.S : I would prefer TEXT format than PDU
...ANSWER
Answered 2020-Feb-18 at 12:51This works for me.
Please try this.
QUESTION
I am trying to read some strings off a text file stored in my PC. My GSM Module is SIM900A I am using python to read the following line contained in the text file:
AT+CMGS=\"+9232xxxxxxxx\"\r
This line contains the AT command and the phone number to which I want to send the SMS.
The Python code is as follows:
...ANSWER
Answered 2017-Aug-20 at 06:41If the file contents is AT+CMGS=\"+9232xxxxxxxx\"\r as you posted, remove the escaping from the file. This should be the contents of the file:
QUESTION
I am trying to send a SMS using GSM SIM900A. But there is no compilation error and other interference there.
The code is executed properly but SMS isn't sent to the number mentioned in the code.
...ANSWER
Answered 2019-Nov-15 at 02:55GSM SIM900A only supports 2G SIM card.At first make sure that you are using a 2G SIM.
QUESTION
I'm new in the arduino community, I spent a lot of days to get up with my gsm sim900A module, but it seems not working it keeps blinking 1 sec, so the sim not registered to the network or something like that, I wonder if anybody has the same problem of me, but I really need help with that.
Thank you
...ANSWER
Answered 2017-Aug-27 at 03:56Steps :
- Insert sim and lock it.
- Connect the adapter and power it
- Now wait for some time (say 1 minute) and see the blinking rate of ‘status LED’ (GSM module will take some time to establish connection with mobile network)
- Once the connection is established successfully, the status LED will blink continuously every 3 seconds.
So just blinking an LED doesn't meant that your GSM is not working, it is how it works.
QUESTION
I wanted to inquire if there is a way in which we can change the sender ID of the SMS. I am sending out SMS through the SIM900A GSM Module and want the receiever to have an SMS with ID such as "KFC" for example instead of phone number +92xxxxxxxxxx?
...ANSWER
Answered 2017-Aug-20 at 13:05When you send a message directly from the arduino, it is not possible to mask your number. But if you want to have another id then you should make use of some message service providers. It requires you to perform HTTP request, thus the GSM module should support that. GSM900A supports http request so you can go for that.I found similar question in arduino forum.
In that you can request for a PHP code which would contain codes for invocation of message services.You can refer this for more details about online message services.
QUESTION
I am currently trying to to use two different serial ports on my arduino uno that is (2,3) for gsm and (8,9) for gps. I have tried both of this links;
1) arduino-uno-with-multiple-software-serial-devices
2) Two port receive using software serial on Arduino.
But nothing seems to be working. The serial monitor displayed nothing.
UPDATE
I changed the libraries of my gps and serial ports to AltSoftSerial and NeoSWSerial. Although both of them working just fine if I use it in the examples. But when I implement both of the libraries and run the code, there are no results in the serial monitor.
...ANSWER
Answered 2018-Apr-26 at 00:31You will not be able to use two software serial libraries to listen to the SIM900 and the GPS.
The main problem is that SIM900 characters can arrive at any time. They could arrive while you are listening to one software serial port.
The only way is to use the hardware serial port for one of the devices. I suggest connecting the GPS TX pin to the Arduino RX pin 0. Then you will read GPS characters on Serial. You will have to disconnect pin 0 to upload new sketches over USB. You can still use Serial.print to display information on the Serial Monitor window.
The SIM900 should be on pins 8 & 9, where you can use AltSoftSerial. This is much more efficient than SoftwareSerial. SoftwareSerial disables interrupts for long periods of time, which can interfere with other parts of your sketch or with other libraries. Avoid it at all costs.
More detailed information in this answer and on my NeoGPS library Installation page: Choosing a Serial Port.
NeoGPS and AltSoftSerial are available from the Arduino IDE, under the menu Sketch -> Include Library -> Manage Libraries.
QUESTION
I am using a SIM900A GSM module and a NEO-6m GPS module. I want to send the location via the GSM module when the GSM module receives a message.
My code is working when I am receiving and sending any message with the help of the GSM module, but it is not working when I join the two, i.e. GPS and GSM modules.
Here is my code for the two.
...ANSWER
Answered 2017-Dec-17 at 14:15#include
//#include
#include
// GPS
#include
// GSM
static const int RXPin = 8, TXPin = 9;
AltSoftSerial SIM900A(RXPin, TXPin);
NeoSWSerial mySerial(5, 6);
TinyGPS gps;
void setup()
{
Serial.begin(9600);
SIM900A.begin(9600);
SIM900A.println("AT+CNMI=2,2,0,0,0");
mySerial.begin(9600);
delay(1000);
}
void loop()
{
bool newdata = false;
String buffer = readSIM900A();
if(SIM900A.available() > 0)
Serial.println(SIM900A.read());
if (buffer.startsWith("\r\n+CMT: "))
{
// printing the number
Serial.println(buffer.substring(9, 22));
// Remove first 51 characters
// buffer.remove(0, 51);
int len = buffer.length();
// Remove \r\n from tail
// buffer.remove(len - 2, 2);
// printing message
Serial.println(buffer.substring(51, len-2));
if (buffer.substring(51, len-2) == "location")
{
Serial.println("Sending location");
// GPS
if (mySerial.available())
{
char c = mySerial.read();
if (gps.encode(c))
{
newdata = true;
}
}
if (newdata)
{
long int lat, lon;
unsigned long age, age1, date, time, chars;
gps.get_position(&lat, &lon, &age);
gps.get_datetime(&date, &time, &age);
Serial.print("Lat/Long(10^-5 deg): ");
Serial.print(lat);
Serial.print(", ");
Serial.print(lon);
Serial.print(" Fix age: ");
Serial.print(age); Serial.println("ms.");
Serial.print("Date(ddmmyy): "); Serial.print(date); Serial.print("
Time(hhmmsscc): ");
Serial.print(time);
Serial.print(" Fix age: "); Serial.print(age);
Serial.println("ms.");
Serial.print("Alt(cm): "); Serial.print(gps.altitude());
Serial.print(" Speed(mps): "); Serial.print(gps.f_speed_mps());
// setting GSM module
SIM900A.println("AT+CMGF=1"); //Sets the GSM Module in Text Mode
delay(1000); // Delay of 1000 milli seconds or 1 second
// sending location from which code word had come
SIM900A.println("AT+CMGS=\"" + buffer.substring(9, 22) + "\"\r"); //
Replace x with mobile number
Serial.println("AT+CMGS=\"" + buffer.substring(9, 22) + "\"\r");
delay(1000);
SIM900A.print("Lat/Long(10^-5 deg): ");
SIM900A.print(lat);
SIM900A.print(", ");
SIM900A.print(lon);
SIM900A.print(" Fix age: ");
SIM900A.print(age); SIM900A.println("ms.");
SIM900A.print("Date(ddmmyy): "); SIM900A.print(date);
SIM900A.print(" Time(hhmmsscc): ");
SIM900A.print(time);
SIM900A.print(" Fix age: "); SIM900A.print(age);
SIM900A.println("ms.");
SIM900A.print("Alt(cm): "); SIM900A.print(gps.altitude());
SIM900A.print(" Speed(mps): "); SIM900A.print(gps.f_speed_mps());
SIM900A.println((char)26);// ASCII code of CTRL+Z
delay(1000);
}
}
}
delay(100);
}
String readSIM900A()
{
String buffer;
while (SIM900A.available())
{
char c = SIM900A.read();
buffer.concat(c);
delay(10);
}
return buffer;
}
QUESTION
I have been trying to do this for 2 days now. I am able to send the GPS lat,lang as a text message to a receiving number. However what i want now is to send this using GPRS. I am using a SIM900A GSM/GPRS module. I am a Software Engineering student and I'm quite new to Arduino. This is my code to use GSM.
...ANSWER
Answered 2017-Jan-02 at 02:43First, SoftwareSerial is very, very inefficient. It disables interrupts for long periods of time, which interferes with other parts of your sketch.
To summarize this answer:
- AltSoftSerial is best, but it only works on pins 8 & 9 (on an UNO).
- NeoSWSerial is next best. It works on any two pins, but it only supports baud rates 9600, 19200 and 38400
Second, your because your program talks to two devices, you have to be careful about using delay or "blocking" at any part of your program. While the program is "stuck" at a delay, nothing else is being processed. GPS characters continue to come in, and they will eventually overflow the input buffer (64 char limit). The smartDelay function tries to work around that.
You should use a Finite-state Machine to handle the sending, without calling delay. Every time through loop, the FSM will check to see if it's time to do the next step. This is very easy to implement with a switch statement and a case for each "step" of the sending process (i.e., the current "state").
This allows loop to constantly handle all the GPS characters, even though the FSM is "waiting" for some time to elapse. The FSM isn't using delay, it is constantly checking millis() to see if the time has elapsed. It checks once per loop.
I would also recommend using my NeoGPS library. It is smaller, faster and more accurate than all other libraries, and it can be configured to parse only the fields and NMEA messages that you really use. If you'd like to try it, it is available from the Arduino IDE menu Sketch -> Include Library -> Manage Libraries.
Here is a NeoGPS version of your sketch:
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Install sim900a
You can use sim900a like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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