IWR1443BOOST: Read UART from somewhere else other than USB or 60-pin

Hello

Have you looked at the EVM UG  to understand how the Muxes available on the board  decide the routing of these signals.

Thank you,

Vaibhav

Hello Vaibhav,

Thanks for the reply. I have read the user's guide for the EVM (this one https://www.ti.com/lit/pdf/swru518)  but I found no useful information pertaining to my original question. Could you please point me in the direction of something I may have missed?

Since posting the original question I have tried simply changing the UART TX pin to be the same as the DS3 user LED:

modified:
    
    Pinmux_Set_OverrideCtrl(SOC_XWR14XX_PINN13_PADAZ, PINMUX_OUTEN_RETAIN_HW_CTRL, PINMUX_INPEN_RETAIN_HW_CTRL);
    Pinmux_Set_FuncSel(SOC_XWR14XX_PINN13_PADAZ, SOC_XWR14XX_PINN13_PADAZ_MSS_UARTB_TX); 
    ...
    gMmwMCB.commandUartHandle = UART_open(1, &uartParams);

instead of originally:

    Pinmux_Set_OverrideCtrl(SOC_XWR14XX_PINN6_PADBE, PINMUX_OUTEN_RETAIN_HW_CTRL, PINMUX_INPEN_RETAIN_HW_CTRL);
    Pinmux_Set_FuncSel(SOC_XWR14XX_PINN6_PADBE, SOC_XWR14XX_PINN6_PADBE_MSS_UARTA_TX);
    ...
    gMmwMCB.commandUartHandle = UART_open(0, &uartParams);

I also removed the PINN13 conversion to GPIO_2 in the code to avoid any conflict.
However, I am not seeing the expected result (UART signal on DS3 LED), I only observe that the UART signal from the USB port disappears. I am not quite sure what the different UART enumerations (UART-1/3, UARTA/B) mean and if they affect which pins can be used and if this is somehow related to SCI-A/B when choosing the UART_config.

Thanks,
Nicolaj

Hello Vivek,

Thanks for your reply.
So copying or re-routing the UART signal to another pin purely programmatically is not possible?

Thanks,
Nicolaj