Meteomodem M20 radiosonde alternative firmware

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meteomodem_m20_custom_firmware

Alternative firmware for new models of radiosondes : Meteomodem M20 (including STM32L051R6T6 ADF7012 XM1110)

Made with STM32CubeIDE

Currently working on, I have been able to send a valid POCSAG frame for the moment.

More updates coming later on this Youtube playlist :

You can join us on Discord if you wanna talk about this project : https://discord.gg/QCYmcGjAeA

Thanks to:

Salim CHIAD F4IFB (@schiad) who encouraged me a lot to start this project, he made some very useful functions like sending data to the transmitter registers or a function that translate frequency into the coorresponding register instruction.
Jarek Surmacz (@infrat) who I think made the first opensource project on the M20, a simple thing that collect GPS data and print it to serial TX, it was inspiring for our first sandboxes.
Tobias and Matthias who did an incredible M20 Reverse Enginering work on their personnal blog.
The magical PDF: PDF_M20_REVERSE