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MSavc · 2018-07-25

Hi!I have an issue with SPI communication on STM32F746 MCU.I have two MCU connected via SPI on my board in 16 bit mode, both MCU`s are STM32F746. At start point it seems normal, but after some time it starts to drop packeges cause CRC32 check(CRC32 c...

MSavc · 2018-08-05

Here they arevoid MX_SPI2_Init(void) { hspi2.Instance = SPI2; hspi2.Init.Mode = SPI_MODE_MASTER; hspi2.Init.Direction = SPI_DIRECTION_2LINES; hspi2.Init.DataSize = SPI_DATASIZE_16BIT; hspi2.Init.CLKPolarity = SPI_POLARITY_HIGH; hspi2.In...

MSavc · 2018-08-03

#define BUFF_SIZE 128Yes, it`s divisible by 4.

MSavc · 2018-08-02

I`m not flushing or invalidating data in buffers, but every packet have same data (i`m use it for debugging), so they are doesn`t needed to flush or invalidate because data is the same in each packet.

MSavc · 2018-08-02

Problem not with CRC: when i debugging corrupted received packet, i see corrupted data in buffer before HAL_CRC_Calculate(), CRC working fine for me. It`s trouble with SPI module or with DMA.

MSavc · 2018-08-02

Both MCU`s placed on one PCB, trace between them is very short, so, i think it`s not a clock. Same problem i have with another projects with f746 MCU, where i`m using another PCB`s.I`m send and receive packets with HAL_SPI_TransmitReceive_DMA functio...

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