20 questions
0
votes
0
answers
79
views
SIM7600 and ESP32-S3 can't get long HTTPS requests
I'm trying to make a module that both works with WiFi and SIM7600 module. The module receives a long (~300 KB) JSON file from an HTTPS server and saves it to flash memory. The function that works with ...
1
vote
0
answers
103
views
Sending and Receiving AT Commands with a NUCLEO-F042K6 to a SIM7600G-H Modem
Let me preface this question with the statement that I am not, by any means, an expert in embedded systems engineering but a humble student trying to learn on the fly for a project that will ...
- 11
0
votes
0
answers
191
views
What am I doing wrong trying to create MQTTS connection to Azure IoTHub with SIM7670G modem
I am trying to use a T-SIM7670G S3 from LilyGo (https://www.lilygo.cc/products/t-sim-7670g-s3) to connect to an Azure IoTHub, using AT modem commands. I am unable to start the MQTT service, even ...
- 1
0
votes
1
answer
120
views
Connecting ESP32 to Azure IoT Through GSM
I have been trying to connect my ESP32, which is connected to SIMCOM's SIM7600 GSM Module, to Azure IoT Service. Connecting to Azure IoT Service over WiFi was rather easy because there were already ...
0
votes
0
answers
168
views
How to use Azure SDK for C on ESP32 with 4G modem (SIM7670G)?
I have created an application on an ESP32 (S3 Wroom) that uses the Azure SDK for C for provisioning to an IoT Hub using the Device Provisioning Service. Here I used the WiFi connection.
My board is a ...
- 1
0
votes
1
answer
87
views
why is sim7600 number from clip different depends on sim card
im trying to setup python script where if someone is calling, it will answer the call depended on if number is allowed. but when call is comming, CLIP service sometimes offer number in like : CLIP: &...
- 11
0
votes
0
answers
30
views
SIM7600 module sends 'CLOSED' after CIPOPEN command send
SIM7600 module sends 'CLOSED' after CIPOPEN command sending.
Sometimes it is responding as +CIPEVENT: NETWORK CLOSED UNEXPECTEDLY
Why it is sending CLOSED and what are the commands we need to send to ...
- 1
0
votes
0
answers
130
views
Sending long JWT tokens in a HTTP request in sim7600
I am using sim7600 module to make a GET request to a HTTPs site. The endpoint requires Tokens for authentication. The token is sent via HTTP parameters with the following AT command.
AT+HTTPPARA="...
- 379
2
votes
0
answers
125
views
+CME ERROR: retry operation when trying to set call fowarding
I am encountering an issue with my SIM7600E module. Whenever I try to execute the command "AT+CCFC=4,2" or 'AT+CCFC=0,3,"{number}",129,1', I receive the error message
"+CME ...
0
votes
0
answers
143
views
4G Hat for Raspberry Pi Zero trouble
I am currently trying to set up a 4G hat [SIM7600X 4G HAT(B)] for my Raspberry Pi 0, and I am following the guide found here:
https://forums.raspberrypi.com/viewtopic.php?t=224355
I have followed all ...
0
votes
0
answers
325
views
Unknown error sending SMS with SimCom SIM7600 module
I need to send SMS message with the SIM7600 module. When I tried some weeks ago, the module was able to send message normally, but from yesterday the module answer with "+CMS ERROR: Unknown error&...
- 1
0
votes
0
answers
46
views
SIMCOM 7600G-Pcie Audio Writing Blocked if Data written when call ends
I just wrote a C# application that waits for a call and picks up the call from the SIMCOM 7600g-Mini pcie module.
I have also connected to the Audio USB Port that is also available when connected, and ...
1
vote
0
answers
67
views
Garbage values when reading from a sim7600 module using jetson nano
I've got a python3 script to run on a jetson nano board and to that board, there's a sim7600 module connected. All the connections are being made correctly, and the voltages are what's expected. The ...
1
vote
1
answer
94
views
Reading multiple blocks from a CoAP block-wise transfer on SIM7080G modem
Problem:
The SIM7080G modem can detect there are multiple blocks in a CoAP response from a server but is only able to read the first block.
AT commands used:
AT+CCOAPINIT
AT+CCOAPURL="coap://coap....
- 31
2
votes
1
answer
96
views
Increase CoAP receive package size beyond 579 bytes on SIM7080G modem
Problem:
The SIM7080G modem is only able to receive a CoAP packet of maximum 579 bytes from a CoAP server (579 bytes total packet size, 566 bytes payload), even though the server sends a larger ...
- 31
0
votes
0
answers
428
views
Trouble Communicating with SIM7600X 4G HAT via Minicom on Raspberry Pi
I'm having trouble getting my Raspberry Pi to communicate with a SIM7600X 4G HAT using Minicom. I can't seem to input any AT commands into Minicom or any other terminal emulator.
Here's a summary of ...
- 643
0
votes
0
answers
222
views
How can I get data from the /dev/ttyS0 port on the SIM7600E-H Rpi 4 model when the internet is on?
When I want to receive data via GPS, the /dev/ttyS0 serial port is busy and I cannot receive data. I cannot make calls or SMS. I can receive GPS data when the internet is turned off.
I would like your ...
1
vote
0
answers
406
views
SIM7600 Module: "Connect socket failed" error after several successful HTTP requests
I'm using a SIM7600 module with an Arduino for cellular communication. I can successfully make a few HTTP requests using AT commands (AT+HTTPINIT, AT+HTTPPARA, AT+HTTPACTION), but after successful 5 ...
- 602
0
votes
1
answer
139
views
sim7600 MQTT connection loss GNSS enables
I am using Lilygosim7600e-h to get the GPS location. After getting it, I am connecting to the internet using pppos_example using gsm internet (TCP) to send the GPS data to the mqtt. but signal drops ...
0
votes
2
answers
860
views
No audio on voice call with SIM7600G-H M.2 4G HAT
I'm trying to place a voice call using a Raspberry Pi 4 and a SIM7600G-H M.2 4G HAT using minicom and AT commands. I can actually call my mobile phone and pick up the call, this workes fine. I have a ...
- 89