Using the UART driver for TX only

trygvis

Other Parts Discussed in Thread: CC2650

I would like to use the uart of a CC2650 as a TX only port. I've tried to configure the uart like this:

const UARTCC26XX_HWAttrs uartCC26XXHWAttrs[1] = {
    {
        .baseAddr       = UART0_BASE,
        .intNum         = INT_UART0,
        .powerMngrId    = PERIPH_UART0,
        .txPin          = Debug_TX_Port,
        .rxPin          = PIN_UNASSIGNED,
        .ctsPin         = PIN_UNASSIGNED,
        .rtsPin         = PIN_UNASSIGNED
    }
};

but I'm not getting any output. If I assign .rxPin to a not yet used pin I'm getting the output as expected. Is it possible to use the uart in an tx-only fasion?

over 9 years ago

0 Christin Lee over 9 years ago

TI__Guru 57485 points

Hi,

In order to use TX only without assigning additional pin, you will have to modify our drivers.

The file you need to look into is UARTCC26XX.c, function UARTCC26XX_initIO

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Using the UART driver for TX only