I'm pretty sure the guy doing MakerLabMe said he was no longer actively developing any of it. (I have listed it in a previous posting)
The only Core that i was not aware of, is the SeeedStudio one.
I took a quick look on GitHub and the CMSIS dates back to Dec 2014, and when i did a search for HAL on the repo, there were only a few comments.
So ad far as I can tell, its not a HAL based implementation, and consequentially we cant directly use it without modifying all the calls in the Wiring code to the Standard Peripheral Lib .
So at the moment I think our best option is to continue with @sheepdoll's excellent work
dharmendra wrote:how to work on STM32F401RE with arduino? please help me
martinayotte wrote:If you don't have F401 hardware yet, I would suggest to go with an F405, since it is already proven working.
But if you have some F401 hardware, maybe you should start by adding a new variant in STM32F4/board.txt that would match with your hardware.
RAM size, FLASH size needed to be tweaked as well as F_CPU.
Also, check the crystal frequency of your board, since maybe you will have to tweak that too in STM32F4/cores/maple/libmaple/rccF2.c
Then, start slowly with simple Blinker sketch, and gradually ramp up with more stuff like Serial, USB, etc.
sheepdoll wrote:As noted the non F1 Cores are based on an older version of lib maple which does not support some of the more recent Arduino features like serial stream.
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