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Questions tagged [gsmcomm]

36 questions
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QUECTEL EC21 GSM module how to receive data wihtout sending a query?

I can communicate with a web server over HTTP functions like get and post with no problem. The algoritm works like this; I send a query with get Than start to listen If any data received, I read it. I need to if I didnt send any request to server,…
bladekel
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How to get data in python from arduino using SIM800L wirelessly

I'm working on a project where I use a SIM800L wireless module to transfer data from an Arduino to Python. I'm not sure how I can do that or what credentials I'll need. What would be the Python code and what would be the procedures. I scoured the…
vanshika srivastava
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AT+CUSD Follow code not working ( USSD Session )

i am having an issue with m35 gsm modem i tired both GSM mode and UCS2 Mode , and tried diffrent settings here is the issue , when i send a normal AT+CUSD that doesn't need actions , such as AT+CUSD=1,"*222#",15 i get a respond +CUSD: 2,"PixX 4G,…
Zack Heisenberg
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Issue using EC2-EUX module with Raspberry Pi for SMS communication

I am trying to use the EC2-EUX module with my Raspberry Pi to send SMS messages from my Raspberry Pi terminal. However, I couldn't find enough information on this communication and encountered a problem when using the 'sudo screen /dev/ttyUSB0…
jabe
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SMS Delivery Report using GSMComm ReadMessage Error

I've been trying to use GSMComm library in a C# app, in order to sent SMS messages(receive delivery report) , using a GSM modem (wavecom). I've read all similar threads in SO, but didn't help. Error: "Message type SmsDeliverReport recognized, but…
miss_rose
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file downloading issue over gsm module and esp32

I am trying to download 1.4 mb file using tinygsm library, and for that i am using FileDownload example. However my device downloads 96,000 bytes and then stops. After debugging the program i found out that client.connected() condition is turning…
java bee
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Not able to set storage of GSM modem using AT command AT+CPMS

I am trying to set the memory location of my phone (Nokia 2730 Classic) but I am not able to set the storage location. I have also tried with the 7 port multi sim card hub and got same issue there as well. I am using the Ubuntu system and using…
Nicole
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Send "Invisible" Message using C# to GSM modem

How can I send an “invisible” SMS via a GSM modem using the C# (the recipient won’t see it, but I will know the status of receipt) to find out if the phone is on or not - “Ping-SMS”
MIX TV
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How to pass the 'function value' in api address of thingSpeak.. I am using Arduino and sim900 GSM

I want to upload rain sensor data to thingspeak using HTTP POST method, But while using "Api key= data to be sent .." The sensor data is not being uploaded to server.. and also as it is in quotes so it is not taking as function may be.... How to…
Pankaj Rai
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Gsmcomm can open port but return no phone connected

I use GSM modem seimen to send SMS. I use library Gsmcomm to connect to modem Modem plug into PC by USB Serial Port My problem is i can open port with no error: GsmCommMain comm = new GsmCommMain("COM20", 19200, 300); comm.Open(); but after that i…
QViet
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AT+CUSD=1,"*101#" does not working with two diffence Operator

I'm bulding a program with AT Command to control my Gsm Modem. My country have 2 operators (VIETTEL and VINAPHONE). When i push SIM of VIETTEL to GSM Modem (on port COM21), I execute command AT+CUSD=1,"*101#",15 and then, i get result is +CUSD:…
J. Doe
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Can't send more than 160 characters sms C# using GSM Modem

I have searched a lot but still couldn't find exactly what am looking for. Actually i'm working on a winforms app that will allow user to send bulk sms using GSMCOMM library with the help of a GSM Modem. What i have achieved so far is that i can…
Omer
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Send At Command to gsm modem with Java to read sms

I have been searching about this problem; I read about rxtx, javacom, smslib etc. I have found several article but I can't really understand it because I'm a beginner. Actually I found some good article that can send SMS here here but the problem…
ikiSiTamvaaan
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how to connect cellphone with com port

I need to add sms service in my c# application. I am trying to use gsmcom sms library. It says to connect cell phone from com port. I have Nokia X2 and it only allows usb cable connection. After Downloading Nokia PC suite It shows connection to com…
Usman Ali Siddiqui Sabzwari
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How to Encode a string to PDU using GSMComm

C# 6.0 Huawei modems use PDU for USSD, I need a c# code or any library to Encode plain text to PDU and decode PDU to plain text ex: *222# ==> 2A994C3602 and vice versa. Thanks.
user1104916
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