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Hello,
I’m curious to know if there is a method to send data to an HTTP server or any other database using the GSM 5 click module in conjunction with the STM32 Nucleo board. If anyone has experience or knowledge in this area, I would greatly appreciate any guidance or insights on how to achieve this data transmission.
Thank you!
To send data to an HTTP server or any other database using the GSM 5 click module with STM32 Nucleo, you’ll need to utilize AT commands. These commands allow you to control and configure the GSM module for communication. Here’s a step-by-step outline:
AT+CFUN: Set the functionality of the GSM module to enable full functionality (normal mode).
AT+CGATT: Attach to the GPRS network to establish a data connection.
AT+CIPMUX: Set the GSM module to single connection mode.
AT+CSTT: Set the Access Point Name (APN) for your mobile network operator to enable GPRS connectivity.
AT+CIICR: Bring up the wireless GPRS connection.
AT+CIFSR: Retrieve the local IP address of the GSM module, required for communication.
AT+CIPSTART: Initiate a TCP or UDP connection to the server, specifying its IP address (or domain name) and port number.
AT+CIPSEND: Send data to the server, specifying the data length and content.
AT+CIPCLOSE: Close the TCP or UDP connection after data transmission.
Remember to handle error responses and implement proper error-checking in your code for reliable communication with the server. The specific implementation details may vary based on the GSM 5 click module and STM32 Nucleo board you are using. Always refer to the respective datasheets, user manuals, and application notes for accurate and up-to-date information.
If you face any challenges during the implementation, don’t hesitate to ask for further assistance. Good luck with your project!
I have tried these commands to establish the http connection actually but to no avail!
While executing the following command, i get error as response! Besides, here is the link for u-blox sara-g450 for gsm 5 click. May be you could suggest what could be the possible errors:
chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://www.mikrocontroller.net/attachment/243876/u-blox-ATCommands_Manual__UBX-13002752_.pdf
I have worked with GSM modem though didn’t used an external MCU with it but have fair Idea of how it should work:-
1. Get AT Command Manual for your GSM modem
2. Using a command line tool like minicom for Linux and CuteCom for Windows send AT Commands to your modem
[ Recommended functions to test:-
Network registration, data call, MQTT, HTTP POST/GET, FOTA/DFOTA , Low Power Mode, CFUN commands
3. Above steps will make sure your modem works and how it’s failure behaviour and AT responses. Time to do the external MCU part
4. Get UART up for STM and Find out what baud rates would work to send AT Command to Modem
5. Now plan the Architecture for you code, it’s the most important part for embedded system just a good code flow discussion with your team should be good to start with.
6. At this stage you need to code up the worker functions for sending and reading the AT responses to your modem, data handling threads, network threads and any worker functions like for MQTT HTTP etc
Tip:-
If this is a serious project
Then always Expect that your modem is bound to fail and become unresponsive at times.
The two weapons to save your ass:-
1. CFUN command
2. Saving the current states in UFS of the modem and then a planned reboot.