About Robmar

Robmar · 2024-05-29

I'd like to be able to distribute secure code updates (encrypted) to clients along with an application that can program the STM32H743 over USB.The STM32CubeProgrammer works well with our board, but does not provide any security as far as I know for t...

Robmar · 2024-04-28

On the H743VIT6 I am seeing a strong spike on the VDDA line every time the 32 samples are completed and DMA triggers to copy them to memory.This is causes the samples to have a 1500 Hz signal with 4 harmonics in the data.The board is 4-layer, solid g...

Robmar · 2024-04-27

I've been testing the ADC_RESOLUTION_14B_OPT mode of the H743VIT6 ADCs but I cannot see any changes at all, not reduced power or noise.Searching ADC_RESOLUTION_14B_OPT lists nothing.Does this mode actually do anything?

Robmar · 2024-04-18

I'm trying to optimize the H743's hardware oversampling on ADC1 & 2 at 384KHz sampling rate, it reduces the noise but I'd like some advice on the settings.The H743 ref. manual state that the oversampling Ratio values are 0 - 1023, setting the number ...

Robmar · 2024-04-01

In the RM the section on the hardware oversampling "25.4.31 Oversampler" is quite brief in it's explication, it states that "There are no changes for conversion timings in oversampled mode: the sample time is maintained equal during the whole oversam...

Robmar · 2024-06-20

I also found the H743VIT6 did not handle power-down as expected, but STM have not responded.Very poor support.

Robmar · 2024-06-07

You might find it useful to run your text through Google's translator, I find it really helps with other languages.So thanks for telling me how to program it, but I'm looking for an already working Windows application, or the source code for Cub32Pro...

Robmar · 2024-06-05

You maybe shouldn't assume you know more than the person posting the question, and maybe also you should read what was written.I can write all the code needed but we are a busy company and expect STM to have the basic support code available so we don...

Robmar · 2024-06-04

We use ROP to make it difficult to read our code off the MCU, I know it can be hacked, but its good enough.We don't want to distribute readable binary code for programming, we need it to be encrypted, which is what SFI does, unfortunately it seems so...

Robmar · 2024-06-04

Thanks, I looked at the SFI web page, its really not very user-friendly, I came away with more doubts that answers. STM32Trust - STMicroelectronicsFor example it states "The STM32CubeProgrammer includes the STM32TrustedPackage Creator tool which allo...

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Looking for an open source USB DFU protocol programmer application

Noise spike when ADC completes and triggers DMA

Optimised ADC mode does nothing ADC_RESOLUTION_14B_OPT

Hardware oversampling on ADC1 & 2 on H743VIT6

ADC oversampling - how does this work exactly?

Re: How to enter Standby or Shutdown mode on STM32

Re: Looking for an open source USB DFU protocol programmer application

Re: Looking for an open source USB DFU protocol programmer application

Re: Looking for an open source USB DFU protocol programmer application

Re: Looking for an open source USB DFU protocol programmer application