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ikrosoft · 2021-03-26

Hello,I'm using the ADC on a STM32G431 to read 5 voltages at 20kHz. Everything works well, but suddenly the 5 channels "get stuck" or freeze, i.e. the value they measure becomes constant even though the voltages on the input pins still fluctuate. Som...

ikrosoft · 2020-01-29

Hello,I'm reading data from an external device using SPI in Receive Only Master mode. For this, I'm using the HAL function HAL_SPI_Receive_IT(), which as its name suggests doesn't use DMA, but is non-blocking and calls HAL_SPI_RxCpltCallback() when i...

ikrosoft · 2019-10-02

Hello,I'm in the process of choosing a STM32 and determining whether an external SRAM/SDRAM is really needed for my application or not.The microcontroller will receive frames of pixels from a camera through SPI in L8 format (i.e 8bit grayscale images...

ikrosoft · 2021-04-27

Hi Igor,Thanks for your input. VDDA/VSSA pins are indeed well decoupled using 1uF+100nF ceramic caps placed ~1mm from the pins, but the caps are on the other side. I'll try and move them to the same side just in case.Best,ikrosoft

ikrosoft · 2021-03-31

Thanks for you answer.Sadly I can't do without the PLL (the MCU needs to be running at almost max speed), but still I've managed to reduce the PLL_N multiplication factor from 84 to 21. It looks like it's not helping though, the ADC still freezes.Why...

ikrosoft · 2020-01-31

Thank you for your answers.I didn't realize HAL was processing so many interrupts, but taking a closer look at the code it now makes sense. I'll stick with 10Mbits/s for now (which probably works because my data width is 16 bits, so that's still 2x 2...

ikrosoft · 2019-10-03

Thank you @Community member for your answer. I hadn't seen that the LTDC iteslf contains a CLUT, but that's exactly what I need.Sadly though I can't sync the LTDC to the camera input, because I'll receive frames at a quite lower fps than what I'll...

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ADC output suddenly becomes constant

Overrun flag when using SPI in interrupt mode (HAL_SPI_Receive_IT())

Using a CLUT with LTDC to reduce framebuffer size

Re: ADC output suddenly becomes constant

Re: ADC output suddenly becomes constant

Re: Overrun flag when using SPI in interrupt mode (HAL_SPI_Receive_IT())

Re: Using a CLUT with LTDC to reduce framebuffer size