STM32L151 SPI in interrupt mode unable to send from within interrupt
STM32L151 running at 32MHZSPI prescaler 256 running at 125KBits/sThe interrrupt does fire, but the first call (from non interrupt context) to get the transfer started HAL_SPI_Transmit_IT hasn't yet finished.Reason: In HAL_SPI_Transmit_IT __HAL_UNLOCK...