Developing the UART DMA driver

Create a copy of your previous project in your IDE. Rename this copied project UART_DMA. Next, create a new file named uart_dma.c in the Src folder and another file named uart_dma.h in the Inc folder. Update your uart_dma.c file, as shown here:

#include "uart_dma.h"
#define UART2EN            (1U<<17)
#define GPIOAEN            (1U<<0)
#define CR1_TE            (1U<<3)
#define CR1_RE            (1U<<2)
#define CR1_UE            (1U<<13)
#define SR_TXE            (1U<<7)
#define CR3_DMAT        (1U<<7)
#define...