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neoxic · 2022-08-07

I'm completely baffled as to how to make DMA and sleep mode work together on an STM32F0. I presume though that the issue is not family specific. It appears when the CPU enters sleep mode via the WFI instruction, DMA stops working. If a busy loop is u...

neoxic · 2022-02-18

I'm confused as to what MMS bits I should choose as TRGO for an "interfacing" timer.A timer is used to trigger COM events on another timer.Its slave controller is configured in Reset mode, so it's automatically reset on any edge change on TI1, for ex...

neoxic · 2022-02-12

I'm trying to adapt a piece of BLDC control firmware that already works for the STM32F0 family for use with an STSPIN32F0 chip using a STEVAL-SPIN3201 board. But for some weird reason, I am unable to figure out what's going on with the gate driver, a...

neoxic · 2022-08-14

Answering my own question. The problem with DMA not working in Sleep mode stems from the fact that DMA needs SRAM and possibly FLASH clocked in Sleep mode. Hence SRAMEN and possibly FLITF in RCC_AHBENR must be set. Both bits are set by default after ...

neoxic · 2022-08-08

Well, I tried different ways to wake up. And it seems waking up is not the root of the problem. The correct way to wake up would be by (Half) Transfer Complete interrupt from the DMA channel. And it works! It wakes up the CPU. But the core of the pro...

neoxic · 2022-02-13

Ok, it looks like it's a self-induced screw-up.:-) I was measuring with respect to ground instead of OUTx.

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Problem using DMA and a timer while CPU is in sleep mode

Correct TRGO selection for interfacing timer

STSPIN32F0 gate driver HS open by default

Re: Problem using DMA and a timer while CPU is in sleep mode

Re: Problem using DMA and a timer while CPU is in sleep mode

Re: STSPIN32F0 gate driver HS open by default