On STM32L475 using UART4 with DMA ring buffer after calling function HAL_UARTEx_ReceiveToIdle_DMA UART generates frame error.
Sometimes DMA is setup prior to frame error interrupt, sometimes after frame error it is not clear to me why. Problem is when frame error is detected after dma is set up then "HAL_UART_IRQHandler" function executes "UART_DMAAbortOnError".I can not de...