About Stefan Hamminga

Stefan Hamminga · 2021-06-21

I designed a board for a client using the STM32F405RGT6. The first batch worked fine, but once the client ordered another batch of boards none of them worked. The used MCU has different markings. A quick image search in Google shows the style of mark...

Stefan Hamminga · 2021-05-17

Stefan Hamminga · 2021-01-05

I'm trying to create a very simple baseline project for an STM32L552CCTx MCU: FDCAN1, USB (device), SWD and a LED. No HSE / LSE clocks present. The 'Clock Configuration' tab works well and a proper clock is found, but in the 'RCC' configuration the p...

Stefan Hamminga · 2020-02-01

Stefan Hamminga · 2018-04-24

Posted on April 24, 2018 at 13:46I understand the older vl6180x works underwater, but I could not find any information regarding the VL53L1. Anyone tried it? If so, how well does it work?I'm looking mainly for proximity detection / distance measurem...

Stefan Hamminga · 2021-06-22

Update: I got some pictures of each MCU type. The newer boards seem to have a revision 2 IC, the older ones a revision 4. The date code seems to indicate the problem MCUs are at least 6 years old?This is the MCU on the second (later) batch of boards,...

Stefan Hamminga · 2021-05-17

Thank you both for answering!@Peter BENSCH I saw that line about the interlocking feature and also the bit Dario quoted about being able to disable it. Would disabling the feature, as proposed by Dario, not work?@Dario CUCCHI Thank you for the deta...

Stefan Hamminga · 2021-01-06

I ran the clock configuration solver again and it seems to only find solutions that cause the MSI issue. Manually changing the PLL configuration to use the HSI does seem to fix it as you said. Should't the clock resolver try to find a solution that f...

Stefan Hamminga · 2021-01-05

Thank you for clearing up the Makefile point. I hope it'll come available at some point!I'll await your feedback on the RCC issue, thanks so far!

Stefan Hamminga · 2021-01-05

The MSI Auto Calibration parameter gets enabled as soon as USB Device support is activated, from that moment the RCC is in a permanent state of error. I've attached the ioc file to this post.

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How to spot counterfeit or second-hand STM32F405RG MCUs?

Can the STSPIN32G4 drive six independent (unidirectional) phases? If so, would it be able to do 6 low-side MOSFETs or only 3 low- and 3 high-side driven phases?

STM32CubeMX "MSI Auto Calibration" shows error, stuck on "enabled" for STM32L552CCTx

Can the VL53L1X be embedded in optical grade epoxy? Will it reduce performance compared to using a cover glass?

VL53L1 underwater use / experiences?

Re: How to spot counterfeit or second-hand STM32F405RG MCUs?

Re: Can the STSPIN32G4 drive six independent (unidirectional) phases? If so, would it be able to do 6 low-side MOSFETs or only 3 low- and 3 high-side driven phases?

Re: STM32CubeMX "MSI Auto Calibration" shows error, stuck on "enabled" for STM32L552CCTx

Re: STM32CubeMX "MSI Auto Calibration" shows error, stuck on "enabled" for STM32L552CCTx

Re: STM32CubeMX "MSI Auto Calibration" shows error, stuck on "enabled" for STM32L552CCTx