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dejan · 2020-07-03

Are there some working hrtimer examples for STM32H7 floating around?

dejan · 2015-06-11

Posted on June 12, 2015 at 01:26I have been hit with an odd issue - we have a very complex board, using practically all of STM32F429 device's peripherals (Ethernet, USB HS device, SDCARD, I2C , SDRAM interface, 3 SPI channels...). When USB HS (with...

dejan · 2020-07-12

Well, aside from these results - what I meant is that HIRES timer on H7 looks very similar (if not the same ) as the one on F3 family, but for some reason ST decided to cut it out from the specs & ref. manual (even HIRES cookbook states that H7 has n...

dejan · 2020-07-10

Yes, I understand that there's no multiplier, but it's a pity ST did not explain in detail how that "multiplying" works - and that applies to other families that have HIRES timer.

dejan · 2020-07-06

Here's the code. This one uses TimerA and TimerB, where period registers are programmed with 3200 and 3201. CHA1 (PC6) and CH2B (PA8) are programmed to generate squarewave outputs. You should get 4.0Mhz on PC6 and 3.998750MHz on PA8.

dejan · 2020-07-06

Chip version register is 0x2003. Again - I am using relatively simple configuration, where I generate two signals in anti-phase with dead time, using single timer and two outputs. My Nucleo board does not have crystal mounted, so I use internal 64Mhz...

dejan · 2020-07-06

Actually, it's even better - I just realized that HRTIMSEL bit in CFGR was reset, so HRTIM was supplied with 200MHz clock. Now I set it to 1 (HRTIM base clock is now 400Mhz) and thing still works - calculated clock is now 12.8GHz !!!

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STM32H7 hrtimer example(s)

STM32F4xx SPI2 and USB-HS conflict

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