1,436 questions
0
votes
2
answers
57
views
How to detect the end of an ESP-01 (ESP8266 AT command) UART response when receiving with interrupts?
I’m working with an ESP-01 (ESP8266, AT firmware) connected to an STM32 “Bluepill”.
I receive data from the ESP using UART interrupt (HAL_UART_Receive_IT) and I want to detect when a full response ...
0
votes
2
answers
108
views
SIM7600E + ESP32: Unable to Send HTTPS POST to Firebase, HTTP_PEER_CLOSED
Got a project using ESP32 with SIM7600E 4g LTE module, and im trying to get it to send data to firebase realtime database. i can get it to successfully initialise and connect to cellular network. ive ...
1
vote
0
answers
310
views
SIM7600E AT+CNMP strange problems
I am using this SIM7600E module in QMI mode, by uqmi cli and accessing it using AT commands through the terminal.
The new module was reporting
AT+CNMP?
+CNMP: 1
OK
which was kind of strange for me, ...
- 751
1
vote
0
answers
73
views
How to setup modem iRZ MC55iT | GPRS | Connection between PR200 and server
I have:
PC-server (Windows 10) with Java program
OWEN PR200 (ПР200, programmable relay)
GSM modem iRZ MC55iT
PC-client with installed Owen OPC Server and Scada
I need to make a two-side ...
- 21
1
vote
0
answers
74
views
Bluetooth Serial Port RFCOMM / SPP
We are trying to connect to a device in SPP. The device sends an "AT+RFCOMM=?" command three times after it closes the SPP link.
I couldn't find any documentation about this command and how ...
- 11
1
vote
0
answers
67
views
Huawei Modem E3531i-2 - Unable to Send USSD via AT Commands
Problem Description
I am using a Huawei E3531i-2 modem on Windows 10 to send USSD requests via AT commands in PuTTY and Python.
SMS sending works fine using AT+CMGS, so the modem is in Modem Mode (not ...
1
vote
1
answer
209
views
A7672S gsm modem not working with Https Get method
Hi i am trying to send some data to my website using https get method by A7672S module, if i am transfer data through http get method means it is working fine, but while accessing via https it throw ...
- 445
1
vote
1
answer
123
views
Get current time via AT Cmds and UART
I'm working on a small microcontroller project with the Raspberry Pi pico. Since the Pico doesn't support WiFi I added the ESP8266-01. In MicroPython, I cannot access the sockets or ntptime libraries.
...
- 25
0
votes
1
answer
913
views
Send AT Commands to USB LTE Modem on PC
I'm trying to develop a program that can interact with the a particular SIM network to send & read SMSs and dial USSD codes.
I built a protoype using an old modem (iBall Airways 3G Modem - ...
- 11
1
vote
1
answer
193
views
AT commands to set LED activity indicators SIM800C not working
I've recently bought a LC SIM800C V3 which is a USB board which looks a bit like this
When plugged in, despite 5V, and connected to network with SIM, I'm not getting any LED activity light show up?
...
- 3,063
0
votes
0
answers
55
views
How to get idToken ( Auth key) for firebase with ESP8266 using AT commands
I was trying to connect to firebase using AT commands on ESP8266 (ESP01).
Without authenticated rules I'm able to write to a node.
But with authenticated rules, I'm having a trouble getting Auth Key.
...
- 93
1
vote
0
answers
823
views
Issues Interfacing SIM A7670C Module with ESP32 Using AT Commands
I'm trying to interface a SIM A7670C GSM/GPRS module with an ESP32, but I'm encountering some issues in receiving proper responses using AT commands. Below are the steps I've taken so far:
Direct ...
0
votes
0
answers
254
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
1
vote
0
answers
74
views
Unexpected Behavior When Using Optional Arguments in Function
I'm experiencing an issue with sending AT commands through a serial port in my code. The problem is that when I send the following commands:
while (true) {
thread_sleep_for(5000);
...
user26775248
0
votes
1
answer
198
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
148
views
How to send binary data containing 0x0D without triggering a carriage return using AT commands
I am using AT Commands to interface with a satellite modem. I need to send bytes of data through this serial connection. My problem is that the AT command is terminated when it finds a carriage return,...
- 75
2
votes
0
answers
201
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 ...
-1
votes
1
answer
740
views
I got AT+CREG? +CREG: 0,0 OK response and at+cops? +COPS: 0 OK Can anyone suggest what is the error occured here
I got AT+CREG?
+CREG: 0,0
OK
response and
at+cops?
+COPS: 0
OK
Can anyone suggest what is the error occured here
The gsm module I have used here is simcom7070g
I got AT+CREG?
+CREG: 0,2
OK
response ...
1
vote
1
answer
290
views
How to know the access condition of EF_MSISDN in SIM card?
I am connected to the phone (USB Debug mode, plus enabling 3GPP AT commands). I need to write my own MSISDN in the SIM. I managed to do it in Physical SIM, but for the eSIM I got an error. I suspect ...
- 13
1
vote
1
answer
157
views
I can't send AT command to my backend server from ESP-01. Error 400 Bad Request
Hi I have been trying to use stm and esp-01 and cominicate with firebase with backend server. my backend server js is this:
const express = require('express');
const app = express();
const ...
- 11
1
vote
0
answers
83
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 ...
0
votes
0
answers
487
views
Problem with AT command in new GSM module A7672S
My project is to send data to ThingSpeak server using GSM module. I had successfully send data to server using Sim900 module. Now due to some reason I need to migrate Sim900 to A7672S GSM. Now I am ...
2
votes
1
answer
125
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
54
views
AT Commands HTTP request to JSON source with status 200 but response that I get is incomplete (just some part of Response I received)
AT Commands HTTP request to JSON source with status 200 but response that I get is incomplete (just some part of Response I received).
#include <SoftwareSerial.h>
#define RX_PIN 2
#define ...
1
vote
1
answer
125
views
Sending Multi part message with AT Commands & PDU Mode Node.js
Im attempting to send a multi part message with at commands, single part works fine and so do special characters but when its multi part so more than 160 characters it says its sent but nothing is ...
