re-direction the message of printf() to UART_0 or UART_1

[Hsu]

Hi Sir,

Normally, the printf() may show the message to UART_0, is there any way we can re-direct the message of printf() to UART_1?

in other words, can we choose the UART_0 or UART_1 to show message when call printf()?

Thank you.

BRs, Han

[Sigurd]

Hi,

The printf() call is retargeted to app_uart_put in retarget.c, that means that printf will use the UART instance used by app uart. This can be changed to UART 1 instance by setting APP_UART_DRIVER_INSTANCE in sdk_config.h to 1. You will also need to set UART1_ENABLED to 1.