About EThom.3

EThom.3 · 2025-03-27

This is a long and weird one.My boss gave me a board with an STM32L433 that wouldn't communicate or do anything after power-on. After a lot of debugging and code tracing, I discovered that the function HAL_RTC_WaitForSynchro returns a HAL_TIMEOUT err...

EThom.3 · 2025-01-27

Hi,I have a piece of CRC calculating code that I nicked from somewhere a couple of decades ago. I've been wondering about a few lines: *CRCVal ^= (*CRCVal << 8) << 4; *CRCVal ^= ((*CRCVal & 0xFF) << 4) << 1;(CRCVal is a pointer to a uint16_t varia...

EThom.3 · 2025-01-14

This may be such a basic question, that I may be embarrassing myself here. Not even sure if I've selected the best fitting location...I like to keep a "clean slate" when compiling, that is, no warnings should be present. It makes it easier to see if ...

EThom.3 · 2024-11-07

I was about to ask about this, but suddenly figured it out.My goal was to delete old irrelevant stuff from the "File path" drop-down box in STM32CubeProgrammer / Erasing & Programming, but it wasn't obvious how to do that. Now that I've figured it ou...

EThom.3 · 2024-08-26

I have an STM32G473 on an existing board, and now the need to trigger Timer 2 in "One Pulse Mode" from a hardware input has come up. No problem, I thought, as I knew that the MCU has an event system. I simply assumed that I could generate an event wi...

EThom.3 · 2025-03-31

Hmmm...I actually don't know.Well... thinking again, I would probably leave the motor windings connected, even though no current should flow through them (as the motor isn't rotating). And then just add the load resistor between one of the outputs an...

EThom.3 · 2025-03-31

I would probably select one of the STM32L433 versions. I have good experience with that.For about 15 years or more, I used Atmel AVRs, before switching to STM32. Despite the rather steep learning curve in the beginning, I have not regretted it. Edit:...

EThom.3 · 2025-03-31

Hi Ross,I have read parts of the datasheet again, in particular section 10. Figure 19 is too simplified for the circuitry to make sense to me. All they show is an extra N-channel FET on each output, which happens to have the same drain-gate voltage a...

EThom.3 · 2025-03-28

Of course it doesn't. That's what made the guy's attempts mildly amusing.

EThom.3 · 2025-03-27

Correction: I had missed this:"... the L6235 device features a non-dissipative overcurrent protection on the high-side power MOSFETs"However, it will only work if you have connected the DIAG output to EN as in the datasheet, figure 19.

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User Activity

HAL RTC synchronization gives timeout error - but only on one MCU

Shifting left – a general C question

Avoiding the "variable set but not used" warning

Deleting the "Recent files" list from STM32CubeProgrammer (Windows)

STM32 event system – connection to timers

Re: l6235 brake issue

Re: Help me choose MCU

Re: l6235 brake issue

Re: Shifting left – a general C question

Re: l6235 brake issue