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SIM800C doesn't go to sleep
My goal is to make my SIM800C sleep for a few seconds using my Blue Pill and STM32CubeIDE. I did the following steps:
configured PA6 and PB6 as (Output) Output Pull Pull and No pull up/down.
used ...
1
vote
1
answer
200
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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?
...
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194
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How to Record Calls to an SD Card using AT Commands with SIM800C GSM Module and Arduino UNO?
Im working on a project using an Arduino Uno and a SIM800C GSM module where I need to record phone calls directly to an external SD card. However, I'm unsure which AT commands to use and how to ...
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vote
2
answers
286
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AT commands to connect Firebase using modem a9g
I`d like to know how can I send data from modem gsm connected! to esp32 with at commands?
I use this at command to send to thingspeak
String cmdString = "AT+HTTPGET="``http://api.thingspeak....
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248
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Arduino UNO + SIM808 GSM shield , +CME error: operation not allowed at AT+CSTT, AT+CIICR and AT+CIPSEND
I'm pretty new to programming and hope that someone knows what's the cause of the issue. I'm building a remote IoT weather station for vineyards which should send the sensor data to a python tcp ...
1
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0
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303
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HTTP POST Request Sometimes Can't Get Response (PHP and SIM800L)
I'm working on getting location from google geolocation api and sending this data to firebase. Theese two service using https ssl connections. And SIM800L very bad at ssl/tls connections. So I added ...
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394
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How do i send message via PHP using SIM800c USB Modem
Hi I'm currently having this script
<?php
//SMS via GSM Modem - A PHP class to send SMS messages via a GSM modem attached to the computers serial port.
//Windows only (tested on XP ...
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166
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ESP32 with SIM800L
Do you have a code for auto-answering a call using ESP32 and SIM800L? What I want is, I will call the number that is inserted in the SIM800L and I am expecting it to answer automatically. I am trying ...
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2
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381
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I cannot make a get request using ESP32 connected SIM800L
I have a API key in openweathermap and I use it to get temperature data of cities. I tested that api on python however I want to make something fancy with esp32 however I couldnt make it and I got 603 ...
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485
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Mosquitto TLS connection and SNI
I am using sim800c module as client to server mosquitto with ssl (tls 1.2) conection.
sim800c when sending ssl handshake , does not send extensions parameter (SNI) in Transport Layer Security and ...
-1
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1
answer
290
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Atmega 2560 UART serial data limit
Hello I am working atmega 2560 with SIM800L. I require to extract data of 100KB from server but i am able achieve only 5KB (RAM constraints) but I have SD card to store the data.
I am trying to ...
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1
answer
193
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what differences between two bellow scatter files for CPP compiler and linker?
In the project this scatter file:
APP 0x90309000 0x000B0000
{
APPCFG +0
{
* (APP_CFG)
}
APP0 +0
{
main.o* (APPENTRY)
}
APP1 +0
{
main.o* (+RO)
*.o* (+RO)
}
...
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384
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how can I solve this "armlink : error L6220: Load region APP size (197016 bytes) exceeds limit (196608 bytes)."?
I want to customize the firmware for the SIMCOM SIM808 module, in one other similar project it's ok but in this project, I faced this problem.
I developed firmware using Real View ARM Workbench IDE ...
0
votes
1
answer
291
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SIM800L Network Error While Sending E-Mail
I have a SIM-800L module and I am trying to send an email using my various email accounts. I tried using manual serial port AT commands and finally, I got this "Network Error":
OK
AT+EMAILTO=...
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486
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How to change MSISDN on USIM Card
I bought new USIM Card. It has not MSISDN written in the MSISDN list (Phone storage = "ON").
I tried to write MSISDN to the USIM card using AT commands of the modem (SIM800X GSM/GPRS HAT).
...