/*-------------------------- UART CONFIG BEGIN ------------------------------*/
/** After configuring corresponding UART or UART DMA, you can use it.
*
* STEP 1, define macro define related to the serial port opening based on the serial port number
* such as #define BSP_USING_UATR1
*
* STEP 2, according to the corresponding pin of serial port, define the related serial port information macro
* such as #define BSP_UART1_TX_PIN "PA9"
#define BSP_UART1_RX_PIN "PA10"
*
* STEP 3, if you want using SERIAL DMA, you must open it in the RT-Thread Settings.
* RT-Thread Setting -> Components -> Device Drivers -> Serial Device Drivers -> Enable Serial DMA Mode
*
* STEP 4, according to serial port number to define serial port tx/rx DMA function in the board.h file
* such as #define BSP_UART1_RX_USING_DMA
*
* @ NOTE, The STM32L0 and STM32H7 devices DO NOT support UART DMA feature.
请问 使用RTT 调试 ART-Pi, UART1,6 都不支持 DMA ?
查了下STM32H750XBH6的datasheet,USART1/USART6应该是支持DMA特性的?