Can I use NUS service without having the UART pins configured/connected?

[Jorge]

Hello,

I want to use the NUS service on my BLE communication. I don't have pins connected for UART, do I need to have them? When I try to run the device, my program initializes all the blocks being used (bsp, uart, spi, ble_stack, etc) and when it tries to print after all the initialization it goes to the app_error. Which is weird because before I also have some prints that are passed by.

Hope someone can help me, using nrf51 on a custom board with SD130v2.1.

edit1: I tried to debug the error, and it's saying that the error is the 0x0000000C caused on line 690 (function : uart_event_handle, case : APP_UART_COMMUNICATION_ERROR) which has the following code:

APP_ERROR_HANDLER(p_event->data.error_communication);

Thank you, Jorge

[Jorge]

I was using the delay, because I needed the timers other place. And the delay was for print purposes, so i can delete it.

[Jorge]

I think it has to do with the pins of the UART, or the UART configuration, because I can run the software on the dongle and DK, but not on my custom board, where the pins are not configured for UART. The strange part is that if I run the central side on it, it works, with the same pins configuration.

[Øyvind Karlsen]

But why are you initializing UART if you are not intending to use it? You can just leave it out, and change the implementation in the nus_data_handler to not use the UART functions app_uart_put.

[Jorge]

I intend to use the UART, but since it seems it was the problem, from the error code that it was giving me, I disabled all the prints. Will try to not initialize the Uart to see if it helps.

[Jorge]

I commented the Uart code, and the spi now seems to be working. The data is not correct, but it may be some wrong configuration on the SPI module. But for the Uart problem, any clue what could it be?