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.
Questions tagged [sim800]
145 questions
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SIM808: Cancel a HTTP request by AT-command
When I send a HTTP request (AT+HTTPACTION=0) with my SIM808 it sometimes does not response with +HTTPACTION: 0,200,2. My goal is to check whether the SIM808 is still waiting for the response or is ready to send another one. Another solution would be…
Lopuch
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1 answer
How to send serial data (URL) to the sim800l for long strings
I try to send a post request with sim800l but, when I send a long string i have a strange problem
the ouput of my Serial console
AT+SAPBR=3,1,"APN","free"
OK
AT+SAPBR=1,1
OK
AT+SAPBR=2,1
+SAPBR:…
jiere zffeff
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I get the sent at command and the response , both in the same response buffer
I am using SIM800 with STM32F0 in a project. I am using UART protocol for communication between them.
After sending the AT-COMMAND and I am waiting for response, I got both (AT-CMD + RESP)
Example:
sent: AT+FSLS=C:\ \r\n
resp: AT+FSLS=E:\ \r\n…
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votes
1 answer
SIM800 close the FTP GET session lonely
I am using SIM868 for a project. Exactly I am using FTP.
After setting the bearer configuration, opened it and setting all the FTP paramaters (like Server address, User name, password..) and when I am trying to open the GET session with…
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votes
2 answers
Can't set ssl certificate on SIM800H module
I am trying to set a custom ssl certificate on a SIM800H module on my arduino (Adafruit FONA), in order to use it on mqtt with a secure TLS connection.
I am able to create and write the C:\ca.crt file in the module's filesystem, thanks to the…
Guilhem Fry
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GSM noise on lm35
i use lm35 temperature sensor and stm32 f030k6 for reading sensor output
when i call sim800 , lm35 output is noisy and incorrect value and When I open the antenna, the noise disappears.
How can I remove this noise?
thanks
M3R ELEC
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3 answers
Python code for network location using SIM800c GSM module
I am trying to get network location using SIM800c GSM module.
I need python code to get latitude and longitude of network location.
There are existing AT commands to get lat…
Rushabh Sudame
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Software serial not displaying anything (SIM 800L)
I am using a LCD with a temperature sensor and wanting to send a text whenever the temperature reaches a certain degree Celsius. The GSM module SIM 800L is currently blinking every once every 3 seconds so it seems to work. Other scripts used seem to…
Hashim Shakil
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1 answer
Receiving data from SIM808
I am trying to use SIM808 module but I have no response even after sending only "AT". I am using 5V/2.5A AC/DC adapter. The board (ecb-v3.2) is rather connected well because two diodes are on all the time and one is blinking every three seconds. I…
quark
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2 answers
Arduino receive data from software serial
Sorry for my weak English. I'm trying to receive the json data from Sim800 on my Arduino. To read the data on the serial port I used the following code:
while(serialSIM800.available()==0); //Wait until the data is received
String content = "";
…
omid ebrahimi
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votes
1 answer
strstr cannot find substring but buffer contains the value
I was trying UART using STM32F407V6T6 and CubeMx.
My UART is working fine. The problem I'm getting while comparing the buffer: I am using strstr() to check that my buffer contains valid substring or not.
Here is the code:
uint8_t buff[10];
int…
sourav maity
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1 answer
SIM800C not registering on network
I'm desperately trying to set up the SIM800C controller, but to no avail.
It seems I cannot register on any network. The AT+COPS=? comaand returns:
AT+COPS:",(0-4),(0-2)
I'm trying to figure out what the " means in that return as it's not defined in…
Helgard Muller
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1 answer
Connect to Azure MQTT using SIM808
I want to send SIM808 GPS data to the Azure IoT hub using MQTT.
As mentioned in docs of azure, I have used the same parameters.
https://learn.microsoft.com/en-us/azure/iot-hub/iot-hub-mqtt-support#using-the-mqtt-protocol-directly
But it doesn't…
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votes
2 answers
Send data to php server using gsm module
I am using SIM800c gsm module to send data to php server
These are the commands i am trying to send…
Devjeet Mandal
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Gsm PDU to Text decoding Algorithm not working in stm32
I have written a PDU to Text decoding algorithm in C which compiles and runs perfectly with dev C or code blocks for more than one messages(where i provide the PDU messages manually). Now i have applied the same algorithm to stm32f103rc connected…
Devjeet Mandal
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