SDK17.0.2, UART example

[HJLee]

I am testing UART example using nrf52 DK(nrf52832), SDK17.0.2. (\examples\ble_peripheral\ble_app_uart\pca10040\s132)
Setting UART initialization to a specific pin will halt the program. (28, 29...)
When I check with the debugger it stops at nrf_shh.c 220 line CRITICAL_REGION_EXIT().
I've checked the circuit, but there are no other connections on that pin.

I have to move the uart pin to another pin for my custom board.
Why can't uart example run on specific pins?

please answer me.

[Jared]

Hi,

What is the UART connected to on the other end? The program will assert if the pins that you use are floating as it will generate an invalid UART event. 

regards

Jared