to HAL or not to HAL - THE definitive answer

This page summarizes the projects mentioned and recommended in the original post on /r/embedded
stm32cube-mcu-package keyboard-firmware C Olkb ergodox-ez

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  • STM32CubeL4

    STM32Cube MCU Full Package for the STM32L4 series - (HAL + LL Drivers, CMSIS Core, CMSIS Device, MW libraries plus a set of Projects running on all boards provided by ST (Nucleo, Evaluation and Discovery Kits))

    • St HAL had and still have huge issues, there is no repo for the code, so you need to download the zip, and for a long time there was not even a issue tracker, I had many time issues and found out someone on the forum reporting the problem. Now at least we have issue tracker, but that made mode clear there are some interesting decision, like missing volatile and no plan to fix it: https://github.com/STMicroelectronics/STM32CubeL4/issues/30 https://github.com/STMicroelectronics/STM32CubeF4/issues/10

  • qmk_firmware

    Open-source keyboard firmware for Atmel AVR and Arm USB families

    • The mechanical keyboard firmware https://qmk.fm/ even ports across different cpu architectures Atmel AVR (Arduino) and ARM more or less successfully. That HAL probably supports a smaller peripheral set over more architectures.

  • InfluxDB

    Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

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  • STM32CubeF4

    STM32Cube MCU Full Package for the STM32F4 series - (HAL + LL Drivers, CMSIS Core, CMSIS Device, MW libraries plus a set of Projects running on all boards provided by ST (Nucleo, Evaluation and Discovery Kits))

    • St HAL had and still have huge issues, there is no repo for the code, so you need to download the zip, and for a long time there was not even a issue tracker, I had many time issues and found out someone on the forum reporting the problem. Now at least we have issue tracker, but that made mode clear there are some interesting decision, like missing volatile and no plan to fix it: https://github.com/STMicroelectronics/STM32CubeL4/issues/30 https://github.com/STMicroelectronics/STM32CubeF4/issues/10

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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