LS1046A GPIO pinMux

[Sally_Jay]

How to change the GPIO_19/20/21/22 to GPIO mode?

Is there any register to configure it?

[Sally_Jay]

Hello,

    I have changed UART_BASE to 3 and UART_EXT to 0.Do I need to configure other bit to make it work?

    After I changed, I still cannot modify GPIO1_19/20/21/22 to GPIO mode on Vxworks.
    By the way,when GPIO1[31] is in GPIO mode ,why it match to GPIO7 on Vxworks system?

    So GPIO1_19/20/21/22 should map other GPIO and not GPIO19 20 21 22? 

[Oswalag · Accepted solution]

For the ls1046a side that's all the needed configuration, if you have issues on Vxworks,  please contact Wind River.

[Sally_Jay]

Hello,

    Do we only modify the UART_BASE and UART_EXT enough?
   I have changed UART_BASE to 3 and UART_EXT to 0.
   I think it should changed GPIO1_19/20/21/22 to GPIO mode.

   But I test it in Vxworks system. I stiil cannot pull up/down these GPIO

[Oswalag]

Hello,

You have to modify the RCW values (in this case RCW[UART_BASE] and RCW[UART_EXT] according to the configuration you want), please refer to table 3-3 in the ls1046a Reference Manual.

Have a nice day!!