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Problem with slave SPI receiving

MMcAl.1
Associate III

‎2022-11-10 2:15 AM

Hello, i've got trouble with receiving SPI in interrupt.

Im running 2 SPI's on STM32F103RCT6; first is transmit only master, second is receive only slave, bus speed is 2MHz on both. SYSCLK is 64MHz.

Transmitting works great (blocking mode), but HAL_SPI_RxCpltCallback is working only for a moment after MCU reset; after 11 times interrupt is not firing at all. Funny thing is everything worked fine until i upgraded my CubeMX to latest and re-generated project.

Anyone got idea where to look for problems?

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TDK
Super User

‎2022-11-10 7:29 AM

Debug the program. Pause it when things aren't working and examine the SPI state machine (hspix) and relevant SPI/DMA registers.

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