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nRF52 - app_trace_init() - UART RX pin issue

Atlas

Hi everybody I run SDK v11 - ble_app_keyboard on nRF52-DK and wants to use UART to print log.

When I set NRF_LOG_USES_UART=1 & ENABLE_DEBUG_LOG_SUPPORT in Keil C's define and no change UART pin default setting in this code, it works well.

But when I change UART RX pin from P0.08 to P0.25 or others, I got NRF_UART->ERRORSRC = 0x08 (Read: error present) and NRF_UART0->EVENTS_ERROR = 0x01. then entry app_error_fault_handler();

Nothing to connect to P0.25.

I also tried ble_app_hrs and same setting but it works well.

Could anyone told me why? Please... Thanks

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