About aadiljaleel

aadiljaleel · 2021-09-01

I am using OSD32MP1 (based on STM32MP157c) in Production Mode with OpenSTLinux on Core A7 and FreeRTOS on M4. One of the tasks is to timestamp ADC data acquired by M4 at very highspeed, very precisely (think it order of nanosecond to microsecond). No...

aadiljaleel · 2021-09-02

Hi @PatrickF , Thanks for your reply! Your reply was helpful. It reinforced me belief that DWT should behave as ARM specifies it. Turned out the problem was very consistent packet drop between M4 and A7, exactly by factor of 2. I wasted too much tim...

aadiljaleel · 2021-09-01

Hi, thanks for your response. The goal is time-stamping. The main problem am currently facing is that Time != CYCCNT/Freq but rather CYCCNT/(2*Freq). Regarding your two points: thanks! I will see to them once everything else works.

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Precise Time Measurement in STM32MP1 with DWT CYCCNT

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Re: Precise Time Measurement in STM32MP1 with DWT CYCCNT