betaflight VS RIOT

Op, it seems your gps has m10 chipset, am I right? Because the m10 is not supported on betaflight. Or rather, it works, but betaflight sets it up incorrectly. There is a fix, but not released yet, or you have to set gps to 10hz in ucenter and disable auto convig in betaflight (and lose some features). See https://github.com/betaflight/betaflight/issues/12737 for more information. This might not be your issue, but it might be related.

I got older betaflight configurator 10.3.1 and when I look at boards in firmware flasher there's a small selection of boards and OMNIBUS is missing. So I've downloaded .hex file from here https://github.com/betaflight/betaflight/releases/tag/4.0.0 for 4.0.0 and tried to flash it from local file but nothing happens in betaflight and the quad has a constant beep sound. When I disconnect it from usb and reconnect it still works fine but its on old 3.1.0 version. I'm not sure what to do here.

Which typically run open source firmware called Betaflight https://github.com/betaflight/betaflight

I think the rc.c file has what you’re looking for.

It’s a known issue specific with the M10. I think there a workaround if you need it asap. https://github.com/betaflight/betaflight/issues/12737

Sorry for missing your question, here's a link to the PR: https://github.com/betaflight/betaflight/pull/12738

github-issue

Blackbox logging doesn’t work reliably since the Blackbox and OSD use the same SPI bus (https://github.com/betaflight/betaflight/issues/12583)

You can select between PID profiles 1, 2, or 3 via the OSD or stick commands fairly easily, and there are options to modify the individual P, I, and D terms per axis in flight using AUX channels via the adjustments tab. If you want the option to configure a 3-posiiton switch to select between PID profiles like you currently can with rate profiles, maybe bump the thread for the BF devs here.

I looked on GitHub for a similiar Issue with Darwin AiOs just now and found this from January 6th concercing 4.4 Update Errors with Accel/Gyro: https://github.com/betaflight/betaflight/issues/12145

RIOT-OS is somewhat popular in academia, it tries to be very approachable but there are still plenty of low hanging fruits with all kinds of hardware and you can use it for software and thesis projects.

Just one example: https://github.com/RIOT-OS/RIOT

You could also take a look at RIOT-OS. http://riot-os.org

RIOT-OS has a lot of unit tests for all the boards they support. And it's written in C. https://github.com/RIOT-OS/RIOT/tree/master/tests

Another option is using RIOT-OS. But that unfortunately doesn't support PWM for the Weact. It does support PWM for the Bluepill and Blackpill STM32f103 and the Nucleo-f446 After quick search. \ https://riot-os.org

If you want to use C, I would suggest trying out RIOT-OS. It's a modern embedded operating system, written in C and focussed on IOT. It works on a lot of different boards. https://github.com/RIOT-OS/RIOT

Alternatively, you can also write your code in an RTOS. They often have scripts that make flashing and debugging easy. One that I personally like, and also supports Arduino, is RIOT-OS.