About JTedot

JTedot · 2022-05-15

Goal: Create a filesystem on SD-card with the SDMMC-interface.The guide here (which should not differ for this MCU) features DMA-settings, which the L5 does not have. It seems as if a bunch of functionality is missing. Why can't I enable DMA for the ...

JTedot · 2022-03-18

Is it possible to obtain a (theoretical) 48kHz sample rate with 0% error on the STML5's SAI peripheral? So far the clock configuration tool in STM32CubeIDE has been unable to do so.Research led me here, but this is not applicable to a slower clocking...

JTedot · 2022-02-23

Most commonly used busses like I2S use a framesize of 64bit (32bit left, 32bit right)DMA uses the bus width (also 32bit)Audiodata with bit depth 8bit is almost useless anywaysSo why does HAL_SAI_Receive_DMA() return an 8bit-value? Wouldn't it be much...

JTedot · 2022-02-18

With the HAL on an STM32U5 nucleo i can HAL_SAI_DMAPause() HAL_SAI_DMAResume() HAL_SAI_DMAStop() HAL_SAI_Receive_DMA() HAL_SAI_Transmit_DMA()Wouldn't it make sense to have aHAL_SAI_DMAStart()?With this nomenclature i don't have a clue how to tx/rx da...

JTedot · 2022-02-18

Compiling generated code in the CubeIDE 1.7.0 with AzureRTOS enabled under tab "Middleware" and a neural network enabled under tab "Software Packs" on an STM32U5 nucleo board exits with error message:../AZURE_RTOS/App/app_azure_rtos.c:24:10: fatal er...

JTedot · 2022-05-19

The presentation sadly does not state how the HAL is connected to the peripheral and no examples are available. As I stated before, no signal line is being driven, which means that the hardware is not accessed. Can you provide an example to the SDMMC...

JTedot · 2022-05-15

I found out. Short answer: just ignore it, it will fit any unsigned integer pointer you provide it with. `uint8_t*` in this case is just a choice, a placeholder if you will. 8-bit, 16bit and 32bit work just fine.

JTedot · 2022-03-18

Great, wrong picture, which i cant edit out. here's the right one:

JTedot · 2022-03-02

Thank you for your reply.It didn't occur to me that a pre-made application had to be built for the AI framework to properly generate code, since a few embedded AI tests that i conducted in the past didn't need them and ran without a problem (however,...

JTedot · 2022-02-18

Alright, found out that calling either HAL_SAI_T/R_DMA() once with the circular mode on acts exactly as i would have imagined a HAL_SAI_DMAStart() to work. It triggers the half- and complete callbacks and fills the buffers autonomously, thank you. I ...

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Nucleo-L5 SDMMC peripheral unable to run with HAL, SDMMC, FATFS

Obtain 48kHz sample rate from SAI on STM32L5

Why does HAL_SAI_Receive_DMA() return an 8bit-value?

HAL_SAI_Start()?

AzureRTOS with X-Cube-AI 7.1.0 connectivity missing header file

Re: Nucleo-L5 SDMMC peripheral unable to run with HAL, SDMMC, FATFS

Re: Why does HAL_SAI_Receive_DMA() return an 8bit-value?

Re: Obtain 48kHz sample rate from SAI on STM32L5

Re: AzureRTOS with X-Cube-AI 7.1.0 connectivity missing header file

Re: HAL_SAI_Start()?