About YZhon.1

YZhon.1 · 2021-05-20

Hello, everyone,I test CANFD a long time. And I found that some Bit Rate doesn't work together. For example, I use CANFD Mode, set to 1M + 5M. It work well. But same parameter at Data Bit Rate，I change to 500k + 5M， or 250k + 5M， it can't work. It al...

YZhon.1 · 2020-05-12

We check stm32h7xx_hal_spi.c, and Surprise that the lastest HAL Lib still not support HAL_SPI_DMAStop() and HAL_SPI_DMAResume(). It is very important. We found DMA_SxCR's EN bit out of control in some time. We use DMA to send and receive spi dat...

YZhon.1 · 2021-05-24

Hi, I figure out. It is TQ problem. When we use FDCAN, The TQ of norminal bit rate and the TQ of Data bit rate need close. When I set 5Mbit/s on Data Bit Rate, TQ is 16.66ns, And set 500K on Norminal Bit Rate, TQ is 200ns, it can't work, and show...

YZhon.1 · 2020-05-12

Unfortunately， We not found any error status when it happened. DMA_LISR and DMA_HISR seem ok.

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Can't communicate when use 500K and 5M Bit Rate

STM32H743 DMA have some bug when I using lastest HAL lib

Re: Can't communicate when use 500K and 5M Bit Rate

Re: STM32H743 DMA have some bug when I using lastest HAL lib