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Questions tagged [sim800]

The SIM800 is a complete Quad-band GSM/GPRS solution in a SMT module which can be embedded in the customer applications. It is the successor of the SIMCom [tag:sim900].

Use this tag for questions related to SIMCom 800 series modules.

145 questions
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AT commands Module SIM7000E

I am programming some functions in a STM32 board. This functions consist in sequences of AT commands, which are sent over UART to the SIM7000E module, to do different tasks. The module uses a SIM with GSM. The configuration function sends the…
user10206903
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Proper AT-command sequence for an UDP datagram sending

Could you please help to eliminate my confusion? I am reading AT commands manual for my SIM800L module, everything is clear in scope of a single command. But it is not clear which sequence is best when sending a UDP packet. So, I know the order of…
eugene-nikolaev
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Should a response be appended right to an AT command if ATE1 (echo) enabled?

I am about to implement a console program for PC which works with a GPRS modem (SIM800L, particularly). I've just learnt what it is hard to parse the responses due to appearance of UCR (Unsolicited Result Codes). So I had a bit googling and found…
eugene-nikolaev
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Why GSM/GPRS SIM800Lmodule is not working in England,UK

I am from England and I am using SIM800L Module for sending the SMS. My module is not connecting with the network(LED blinks every second instead of after 3 seconds). I don't know what's the issue, I wanna know whether this module (SIM800L) works in…
i130233 Ammar Ashraf
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Couldn't send data to thingspeak via Sim 800

I have connected the sim800L to my PC via TTL connector. Using "putty" I tried to send data to thingspeak through sim 800 GSM module by using following AT…
fayaaz
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Unable to GET data from the server using sim808 module

I am using FONA808 module (making use of sim808 chip) to retrieve the data from a website. However, I am unable to do so. I have checked the following: - GPRS connectivity : OK (AT+CGATT? returns ok) - Properly configured APN (AT+CSTT="web2") -…
Muhammad Akram Karimi
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SIM 800 GPRS modem for HTTP GET and POST to AWS IoT and AWS API gateway

I was trying to POST and GET some JSON data to and from the AWS cloud respectively using the SIM 800 module. I'm initially trying it out directly from my PC over a terminal UART software and inputting AT commands in manually. HTTP GET is working…
Xavier Gonsalves
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SMS Alphanumeric Sender Id Encoding

When I receive sms on my sim808 module, i can see it as AT+CMGL="REC UNREAD" +CMGL: 21,"REC UNREAD","+919538634187","","18/01/28,13:20:31+22" test1455 OK When I send the message using a service that uses alphanumeric sender id, I get…
Ankit
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Bluetooth SPP profile on SIM800H

I'm having issues when trying to use bluetooth on my project. On previous version I used the HC-05 module for bluetooth and it gives me a simple serial connection right after any device connects. Now the project evolved and we opted on using SIM800H…
William Monteiro
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When I try to write data to my sdcard , My sim7600 Module doesnt send HTTP values to thingspeak

I have a sdcard connected to arduino uno with chipselect 10, and sim7600EI connected to sofware serial pins (6,5) of arduino. When I trying to upload data to thingspeak with an HTTP request it works seamlessly, however When I begin to add sdcard…
dachu darshan
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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 mosquitto disconnects connection after handshake…
Rotanic
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Arduino UNO - SIM808/GPRS Module is not making POST request

Good night, I am opened a ngrok tunnel for my web project and I am trying to make a POST request from SIM808 module. The codes and output given below: // Libraries / Defines ... char httpLogin[] = "POST /api/device/login HTTP/1.1\r\nHost:…
Beresyus
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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) } APP_RAM 0xF0380000 0x00060000 { main.o …
Hossein
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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 version 4.0 and SIM_EAT SDK. I checked the source…
Hossein
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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…
BehicMV
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