In STM32, there is a dedicated bus for the DMA, and this helps keeping the CPU free for other operations….
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UART DMA with IDLE Line Detection
HAL_UARTEx_ReceiveToIdle_DMA is used to receive the data using the DMA until, an IDLE event occurs, or all the data has been received…
Ring buffer using head and tail in STM32
Whenever UART receives data in the ring buffer, the head gets incremented by 1. And when we read that data, tale gets incremented by 1.
Receive UART data using POLL, INTERRUPT and DMA
This tutorial covers How to receive data using the UART in STM32. Here we will use all three methods, i.e. Poll, Interrupt and DMA