S32K144 LPUART1 is not working under pin PTD13 and PTD14

[海雄周]

in the example of "Ipuart_echo_s32k144", the orignal pin PTC6 and PTC7 are working under the example codes. Now, I am trying to change the pin to PTD13 and PTD14, then it is not working. So, what should I change the code to make it works? 

I have changed the code as below:

 {
        .base          = PORTD,
        .pinPortIdx    = 14u,
        .pullConfig    = PORT_INTERNAL_PULL_NOT_ENABLED,
        .passiveFilter = false,
        .driveSelect   = PORT_LOW_DRIVE_STRENGTH,
        .mux           = PORT_MUX_ALT3,
        .pinLock       = false,
        .intConfig     = PORT_DMA_INT_DISABLED,
        .clearIntFlag  = false,
        .gpioBase      = NULL,
    },
    {
        .base          = PORTD,
        .pinPortIdx    = 13u,
        .pullConfig    = PORT_INTERNAL_PULL_NOT_ENABLED,
        .passiveFilter = false,
        .driveSelect   = PORT_LOW_DRIVE_STRENGTH,
        .mux           = PORT_MUX_ALT3,
        .pinLock       = false,
        .intConfig     = PORT_DMA_INT_DISABLED,
        .clearIntFlag  = false,
        .gpioBase      = NULL,
    },

[martin_kovar]

Hello,

do you have externally interconnected PTD13 with PTC6 and PTD14 with PTC7? This must be done, because PTD pins are not connected to OpenSDA interface by default.

Regards,

Martin

[海雄周]

Hi Martin,

Thanks for your reply. We are using externally USB-UART for pins PTD13 and PTD14. I don't think we need to connected to OpenSDA. Is there any other possible why it is not working? Many thanks.

Regards,

Zhou

[martin_kovar]

Hello,

I tested lpuart1 connected to PTD13 and PTD14 and it works correct on my side. Please see my pin_mux settings

Here is the signal I measured on PTD14 pin.

Regards,

Martin