All Questions
Tagged with at-command embedded
31 questions
0
votes
1
answer
992
views
603 HTTP response while using at commands
I am using AT commands to get a response but when I run it I get 603 status message
these are the at commands
AT
OK
AT+SAPBR=3,1,"APN","internet"
OK
AT+SAPBR=1,1
OK
AT+HTTPINIT
OK
...
0
votes
0
answers
204
views
Quectel MC25 Module not giving AT response
I'm using the Quectel MC25 Module with an STM32 for a tracking device. The module works well for a few hours, then stops responding to AT commands and gets stuck. How can I fix this issue?
The module ...
- 1
0
votes
0
answers
270
views
How reject incomming calls using AT-commands in simcom module a76xx (a7672e)
On the sim800/900 modules, this was done using the AT+GSMBUSY=1 command. Please, help me.
I need incoming calls not to interfere with me and could not intercept control that was in the other work ...
0
votes
0
answers
118
views
How can I add data after the '>' character in my Neoway N58 using qcom tool?
I am trying to send data from my Neoway N58 to my phone. The application note mentions that the command to do the same is
AT+NWBLEPSEND=<srv_id>,<crt_id>,<op>,<mode>, len<CR&...
0
votes
0
answers
512
views
How can i forward a phone call on sim800 to a number using AT command
Hello everyone am trying to forward an incoming call on a gsm module, sim800f to a my other line.
I'm communicating with the gsm module over a serial to USB converter and Putty terminal.
The AT ...
0
votes
1
answer
969
views
Integrating a 4G modem to STM controller using USB Host CDC class
I have a STM controller with usb host and device functionality, How can i connect Quectel EC25 4G modem with USB to the stm micro controller. Whether configuring stm to USB Host CDC class will detect ...
2
votes
1
answer
1k
views
How To "clear non volatile memory" on u-blox sara r410 using AT commands
I'm working on a customized device using STM32L4xx and the Sara R410m u-blox modem via UART interface. The firmware is written in C. There's an additional USB port so it's possible to send AT-Commands ...
- 21
0
votes
0
answers
571
views
How to find the port (/dev/smdX) to which the AT commands should be sent?
I've been using the following format for sending AT commands from the Application processor (AP) to the modem subsystem:
cat /dev/smd7 &
echo -e "ati\r" > /dev/smd7
It has always ...
- 344
0
votes
0
answers
725
views
Send APDU to sim868 via AT+CSIM
I have GSM/GPRS/GNSS/Bluetooth HAT for Raspberry Pi with SIM868
I want to communicate with sim card over APDU command with AT+CSIM command. The datasheet says that this at command is supported by ...
- 328
1
vote
3
answers
470
views
What's the relationship between AT commands and device vendor's C API?
I'm doing an embedded-system project now. From my view, AT commands can be sent to a device to retrieve 4G information, dial and so on. On the other hand, we can also do that by calling APIs provided ...
- 141
1
vote
1
answer
2k
views
SIM800l Httpaction. Can't get 0,200 or 0,200
I'm playing with HTTP GET and POST methods and I have problem. My problem is next one: Last week my GET method was work perfect and then suddenly stop working. Problem occur because MCU can't got ...
- 159
1
vote
2
answers
2k
views
GSM Telit GL865-QUAD AT command, error: 314 (SIM card busy)
I'm trying to communicate with GSM click module (Telit GL865-QUAD module) via UART with AT command. First I want to read all received messages, but for some reason I got error 314, meaning that SIM ...
- 159
0
votes
1
answer
4k
views
Sending HTTP requests with AT commands on the ESP32
I'm trying to send AT commands to my ESP32* module and am not getting any response back.
I need to perform a POST request that contains the username and password and other requests later on. I am not ...
- 147
8
votes
1
answer
4k
views
SIM800L Blank SMS issue
I am using a SIM800L module with a Texas Instrument Launchpad, with a MSP430G2553 microcontroller, not using an external library for SIM800L.
Problem Statement:
A Simple text message (SMS with Text ...
- 3,872
0
votes
1
answer
220
views
SIM5360E GPS/GSM Module UART communication
While I'm connecting the SIM5360E module with USB to uart converter and am sending at+commands through putty, I am getting some null values as shown below.
Please help me to rectify the issue:
AT+...
0
votes
0
answers
59
views
Trouble storing responses of AT commands
I'm using MSP430 and SIM900 modules to send and receive SMS. When I receive a SMS, I want to read the message and store the information in a variable. I even want to store the sender number.
AT+CPBR=...
- 1
1
vote
0
answers
72
views
Elimination of double quotes added in string of buffer while sending string of data
I'm storing a string of data in an array:
BUFTYPE txBufmes1[] = "AT+CSCS=\"GSM\";\r\n";
BUFTYPE txBufmes2[] = "AT+CSMP=17,167,0,0\r\n";
BUFTYPE txBufmes3[]="AT+CMGF=1\r\n";
BUFTYPE txBufmes4[] = "AT+...
- 41
0
votes
1
answer
425
views
Setting Cinterion BGS2-W modem certificates in code
I'm trying to use AT commands to setup a BGS2-W modem on a custom board to connect to a site over TLS, but the modem is not reacting to my commands and no certificates are being set.
I'm using the ...
- 1,503
0
votes
1
answer
269
views
Send SMS with STM32l152 and SIM900
I send the SMS "Hello World", but on my cellular I get this message ATAT+CMGS="xxxxxx">HelloWorld instead. What can be causing this?
void controlAT()
{
clearString();
wait_ms(100);
...
- 281
3
votes
1
answer
400
views
Getting tower location instead of gps
I have a GSM/GPS unit connected to a Microcontroller, the communication between them works fine. I am able to get the GPS and send it to the Microcontroller but there are times when the unit is inside ...
- 1,233
1
vote
2
answers
1k
views
How to handle GSM buffer on the Microcontroller?
I have a GSM module hooked up to PIC18F87J11 and they communicate just fine . I can send an AT command from the Microcontroller and read the response back. However, I have to know how many characters ...
- 1,233
0
votes
1
answer
4k
views
Arduino: AT Commands - Read the last line of the serial output using Serial.read()
I constantly pass AT commands to get GSM Signal Strength
My code copies the entire serial output
Kindly advise how to read the latest serial output (last line)
find the output below, in which i need ...
2
votes
0
answers
1k
views
Modem GPRS indicates be connected but doesn't receive or send any data
I'm implementing an application that sends data to a server and also receives. So, to always be able to receive data, I choosed keep it always connected. To get this, I use GL865 Telit modem into the ...
- 1,160
1
vote
1
answer
261
views
Sending AT commands from an embedded system to a Fastrack Supreme Wavecom Module
I have an embedded system that controls a motor using pwm and some other things, I send commands through a serial connection, which is connected to a Fastrack Wavecom Supreme GSM Module. However, the ...
- 661
2
votes
1
answer
695
views
How to know whether a call is made or not using AT Command terminal output
I am using SIM908 (it includes a GPS and GSM modem in one module) to call someone.
I issued the ATD command along with the phone number to call.
Sometimes it will call, and in sometimes it wont.
I ...
- 3,784
0
votes
1
answer
997
views
GSM Modem GPRS Data Send Delays
I'm trying to make a TCP connection between a server(in this case, my PC) and my telit gl865-dual modem.
I am connecting the modem via serial port(ftdi adaptor) and send or recieve data and commands ...
- 331
0
votes
1
answer
183
views
Do we need drivers for micro controller which has to communicate with mobile phones?
I am planning to build a micro controller (a switch will be attached to the embedded system which contains this micro controller) and this embedded system will be connected through a wire to mobile ...
- 189
4
votes
5
answers
16k
views
End of response to an AT command
How to be sure what is end of an AT command send to GSM module?
I need some character or string that represent end of AT command for every case due to finding when whole response is received.
I ...
- 518
1
vote
3
answers
3k
views
AT commands in embedded systems
I am using embedded C and trying to make application for GPRS terminal. My main problem is working with AT commands. I send AT command using serial line, but if it is some network oriented command its ...
- 518
5
votes
3
answers
5k
views
How to read SMS using AT on an embedded system with limited memory?
I'm developing a piece of embedded software, which also communicates with a modem through the AT protocol. Now I want to read messages, but I have come across a problem with my memory capacity. It ...
user504451
2
votes
2
answers
13k
views
Internet through GPRS using telit GL 865 GSM/GPRS modem
I'm working on the Telit GL-865 GSM/GPRS Modem kit for research purposes. I have connected it to my pc using a serial port and got the terminal access using Putty.
I can successfully execute all AT ...
- 621