关于调整uart_debug调试口问题

[328670383]

你好，根据官方给的imx8m原理图参考，uart_debug的调试口有两个：uart1和uart2，uart1 对应于A53 核，uart2对应M4核，如下图所示。现在想将两个调试串口合并为一个，如：将M4调试换到uart1上，需要软件如何设置，硬件是否需要改动？

希望给解答一下，万分感谢。

[weidong_sun]

Hi Huajian,

 See below, please!

1. Hardware

Don't need to modify it.

2. software

(1)You need to modify software in linux BSP: u-boot & dts

    this is for A53.

(2)You need to modiy firmware for M4

At first download SDK for M4 of i.MX8MQ from : https://mcuxpresso.nxp.com/en/select, select i.MX8MQ EVK , then select other items according to guidance.

Open it's one of  demo apps, you will find UART2 is used for Console. so modify it to UART1.

Have a nice day!

NXP TIC weidong sun