I am having trouble with the PWM. While it works, the resolution is very coarse. With 64kHz, the duty cycle (measured with a scope) stays the same for set values 0.51 … 0.56 (it seems to take 6.4% steps). with 32 kHz this is 3.2%. Indicating there is a fixed 1µs hiding somewhere. I did try fast_PWM…

STM32F103, PWM very coarse

gabber (Silvan Geissmann) June 28, 2020, 8:32pm 4

As I mentioned, I did try fastpwm. But then the CAN Bus stops working.

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