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Original question:

TM4C1294NCPDT: It would be into FaultISR() when compared between float data.

TM4C1294NCPDT: A question of used the FP0 and PF4 as normal output GPIOs to control D4 and D3 to on/off on the TI TM4C1294NCPDT board.

user6092104
Prodigy 220 points
Part Number: TM4C1294NCPDT

Hi, TI teams,

I use the  TM4C1294 Connected Launchpad (EK-TM4C1294XL) to do same experiments.

I use the FP0 and PF4 as normal output GPIOs to control D4 and D3 to on/off on, as below,

I modify the code in pinout.c, I write the PF0 and PF4 to 1, the D4 is lighting, but the D3 is not lighting, the code as below,

I read the TM4C1294 Datasheet, it is no ploblem about the code.

why the D3 is not lighting?

Regards,

eric

  • 0
    TI__Guru**** 190806 points

    Hi,

      You should change:

    FROM:

    ROM_GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_0 | GPIO_PIN_4, 1);

    TO:

    ROM_GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_0 | GPIO_PIN_4, GPIO_PIN_0 | GPIO_PIN_4);

    Please note that the pins are specified using a bit-packed byte. What you wrote only sets PF0, not PF4. If you want to set both PF0 and PF4 you need to write 0x11, not 0x1.