Arduino for STM32

rather than waiting for someone to write the code for you, take a look at the reference manual and see how it can be done (easily as well).

comment out certain sections of the code and see if you still have the problem.

and gradually narrow down the possible cause.

you may want to consider switching the bus so that at a given point only one device is on the bus.

Much easier than having a gazillion i2c buses.

Wrote some routines to measure CPU usage. Basic concept is shown here, on a cortex-m0 chips: https://dannyelectronics.wordpress.com/2020/07/05/measuring-cpu-mcu-utilization-on-cortex-mx-chips/ it runs off of SysTick. Ported it over to Arduino here: https://dannyelectronics.wordpress.com/2020/07/06/m...

thanks. glad that you find it helpful.

my attempt, at benchmarking a variety of chips, and outside of the typical dhrystone / whetstone routines: https://dannyelectronics.wordpress.com/ ... -exercise/

Interesting to see how the chips fall. the numbers are measured in cycle counts.

not sure what happened. it has been a while and happy to be back.