About Arnaud1

Arnaud1 · 2023-11-17

Hello,I have a new PC Windows and and I have this error when I start the software STM32 ST-LINK Utility (file in attachment)It misses dll file (mfc140.dll)And idea please?ThanksArnaud

Arnaud1 · 2022-09-13

Hello,I use STM32F091VC the from 4 year without problem, I have used more than 20000 STM32F091VC. Recently, I have several STM32F091VC who have a big problem of accuracy on the clock HSI. The error is about 30% ! For exemple, the STM32F091VC give abo...

Arnaud1 · 2020-05-11

I2C is 400KHz, but I have same problem at other speed SCL.I use ST25DV16K-I.

Arnaud1 · 2023-11-17

Thanks for your feedback.I think that I have found the problem, it misses all .DLL file in my computer , I need to download Microsoft visual c++ from the last years on the PC.BR Arnaud

Arnaud1 · 2022-09-14

Thanks for your help and feedback. Just a question, the defects mcu could be recalibrated at your factory in this case?BRArnaud

Arnaud1 · 2022-09-14

Please find the both pictures, I hope you could read them. I have only my phone for photo today, but tomorrow, it will be possible for me with a microscope.Correct MCU :STM32F091VCT6 A7B754 93PHL 7B 115Defect MCU :STM32F091VCT6992NX 93MYS 99 146 A

Arnaud1 · 2022-09-14

I have just tried with an old mcu buy in 2021 from another provider. It seems ok, 8 MHz ! Of course, I am using exactly the same code to test the mcu. An idea why some mcu have a defect clock ?

Arnaud1 · 2022-09-14

Thanks for your reply. I have tested the project with CubeMX, the probe of the oscilloscope is on the PIN PA8, it seems that the frequency HSI is 5.75MHz instead 8Mhz, the same error that my personal code. I will try to found a old same mcu buy few y...

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STM32 ST-LINK Utility

Problem with the HSI clock on the STM32F091VC

Hello, I try to read 64 bytes of the memory in a loop. I can read, it works fins, but I must wait ever 100ms between each command to read 61 byte. If I don’t wait 100ms in each command of reading, I receive error. Why? Thanks

Re: STM32 ST-LINK Utility

Re: Problem with the HSI clock on the STM32F091VC

Re: Problem with the HSI clock on the STM32F091VC

Re: Problem with the HSI clock on the STM32F091VC

Re: Problem with the HSI clock on the STM32F091VC