MicroPython libraries for the SIM800 module

[Andreas]

Introduction

After some quick research, we want to add a collection of MicroPython code offering driver support for the SIM800 modem. While the UpyPhone is already supported by corresponding code, there are also others we would like to list and investigate here.

Let’s face it: As the communication is done using regular AT-commands over UART, this is not exactly rocket science, but there’s lots of nitty gritty details to work out to get things right, so we should definitively build upon work done by others already.

MicroPython

• Drivers/SIM800L.py at master · pythings/Drivers · GitHub
  A pure-MicroPython driver for the SIM800L GPRS module with both HTTP(S) GET and POST support by Stefano Alberto Russo (@sarusso).

• GitHub - jeffmer/micropython-upyphone: A gsm phone using pyboard and sim800l
  The MicroPython implementation used for the UpyPhone, a Pyboard based GSM phone by Jeff.

• GitHub - loboris/MicroPython_ESP32_psRAM_LoBo: MicroPython for ESP32 with psRAM support, see gsm · loboris/MicroPython_ESP32_psRAM_LoBo Wiki · GitHub
  An ESP32 C++ module with bindings to MicroPython by Boris Lovosevic.

• GitHub - olablt/micropython-sim800
  A spike using an early variant of MicroPython’s uasyncio-implementation by Melitonas.

• UART with GSM SIM800L - MicroPython Forum
  Discussions on the MicroPython forum.

Regular Python

… but also worth a look. Probably suitable for SBC machines and other hardware running a full Linux/Python installation.

• GitHub - JFF-Bohdan/pygsmmodule

[sarusso]

If anyone is interested, I built a one-file, pure-MicroPython driver for the SIM800L GPRS module with both HTTP(S) GET and POST support. Works out of the box on the TTGO T-Call SIM800 v1.3 board, but SIM800L pins are parametrized in the Modem() constructor class so it should work on any hardware. Does not use asyncio but for simple, sequential tasks it seems to work pretty well. You can find it here: GitHub - pythings/Drivers: A collection of Drivers for various peripherals.

[poesel]

Thanks a lot! @Andreas - would that suffice to get data to Grafana?

[clemens]

Just for reference, the example from the T-Call repo: TTGO-T-Call/examples/MicroPython_LoBo at master · Xinyuan-LilyGO/TTGO-T-Call · GitHub

[Andreas]

Dear Stefano,

@sarusso

I built a one-file, pure-MicroPython driver for the SIM800L GPRS module with both HTTP(S) GET and POST support.

This is great news! I’ve deliberately diverted further discussions around your implementation to Unlocking and improving the Pythings SIM800 GPRS module for MicroPython.

@poesel

Thanks a lot! Would that suffice to get data to Grafana?

Out-of-the-box support for HTTP POST within a pure-Python module was the main thing missing from all the other implementations referenced above. So: Yes, my conclusion is that this is the way to go right now.

Thanks a bunch and with kind regards,
Andreas.

[sarusso]

Thank you @Andreas for appreciating my work and for starting the new thread on integrating it!
My pleasure to have contributed!

[Andreas]

Dear @sarusso,

@Andreas

I’ve deliberately diverted further discussions around your implementation to Unlocking and improving the Pythings SIM800 GPRS module for MicroPython.

I just recognized your implementation hasn’t made it back to be added to the canonical list of MicroPython-compatible implementations above. I have just caught up on this.

With kind regards,
Andreas.

[Andreas]

Hi. I didn’t have a closer look yet, but wanted to share a recent discovery at least.

GitHub - Bhagyarsh/usim800: usim800 is a Python driver module for SIM800...