USART

A minimal UART setup can be achieved by setting up the Starter Project. This section will introduce some advanced concepts like interrupt and DMA transfer.

1. Interrupt

2. DMA

Note: sometimes CUBEIDE will put the DMAinit() code after the UART_init code in the autogenerated section. If this happens, UART will not work!

We need to manually move the DMA_init() piece to the top.

HAL_UART_Transmit_DMA() doesn't?ST Community

HAL_UARTEx_RxEventCallback

UART_DMARxHalfCplt is bugged for STM32G0ST Community