UART sending data

[mercimek]

hi, I'm using two nrf52840 and I was given a task to transmit a string between them. I'm trying to understand ble_uart central and peripheral examples. I'm using sdk15 and segger to compile. my problem is, how can i see the data transmitting from one to another, because I can't see a string on putty.

[AndreasF]

Hi.

Have you looked at the infocenter? Here you can find more in-depth information for each example, including how you can test the examples.

For the UART Central (\examples\ble_central\ble_app_uart_c), you can find information on how to setup a test at the bottom of this page.

For the UART Peripheral (\examples\ble_peripheral\ble_app_uart), you can find information on how to setup a test at the bottom of this page.

In each of the pages on the infocenter you also find the correct UART settings that you should use in PuTTY.

- Andreas

[mercimek]

hello, thanks for your answer. I read and compiled the examples as written in there. the problem is I cannot see any printf line like NRF_LOG_INFO("BLE UART central example started.");

I'm sure I must see this on terminal. What will you recommend to me? What do you think why I don't see any line?

[AndreasF]

Hi.

The NRF_LOG_INFO(); function is used for Real Time Transfer (RTT) logging, not UART. The UART uses the printf(); function. You can read some information about the different techniques for communicating with the board here.

- Andreas