Hello, I have a query about how HAL_UART_Receive_DMA and HAL_UARTEx_ReceiveToIdle_DMA work?
For my application there is a varying payload size, so I am wondering how would I trigger the HAL_UART_Receive_DMA(&huart3, rx_buffer, 4096, 0xFFFF); interupt? As from my understanding it would be waiting for all 4096 bytes of data which won't arrive unless a different frame was sent.
Whereas HAL_UARTEx_ReceiveToIdle_DMA(&huart3, rx_buffer, 4096); triggers once the serial port stops communicating, however it stores the received data in 512 byte chunks, which has proven difficult to access when generating a LUT from the rx_buffer.
If anyone can shed some insight over how these interrupts work? And how to make them applicable for a variable payload would be great.
