Adding UART to ble_blinky_c

Question

Hello,

I want to add control over UART to ble_app_blink_c project.

SDK is version 16,I copied <SDK>/examples/ble_central/ble_app_blinky_c folder and made <SDK>/examples/ble_central/ble_app_blinky_c_uart folder from it, the project is attached, you can unzip it to <SDK>/examples/ble_central/ folder to try it out.

I copied uart_init() from ble_app_uart_c project and I added the required files from libraries/fifo and libraries/uart and I added required lines to sdk_config.h :

      /* Universal Asynchronous Receiver-Transmitter */
      #define UART_PRESENT
      #define UART_COUNT 1

      /* Universal Asynchronous Receiver-Transmitter with DMA */
      #define UARTE_PRESENT
      #define UARTE_COUNT 1

      #define UARTE0_EASYDMA_MAXCNT_SIZE 8

      //==========================================================
      // <q> APP_FIFO_ENABLED - app_fifo - Software FIFO implementation

      #ifndef APP_FIFO_ENABLED
      #define APP_FIFO_ENABLED 1
      #endif

      // <e> APP_UART_ENABLED - app_uart - UART driver
      //==========================================================
      #ifndef APP_UART_ENABLED
      #define APP_UART_ENABLED 1
      #endif
      // <o> APP_UART_DRIVER_INSTANCE - UART instance used

      // <0=> 0

      #ifndef APP_UART_DRIVER_INSTANCE
      #define APP_UART_DRIVER_INSTANCE 0
      #endif

Everything compiles fine but I can't make UART work with ble_blinky_c.

printf("text\r\n); doesn't output text to serial monitor (Putty).

Please can you help me with providing code lines for reading from and writing to UART in the ble_blinky_c project and tell me what is the right way to add UART support to a ble app?

Thanks in advance,

Tom

ble_app_blinky_c_uart.zip