Unlocking PF0 on TIVA Ware

Hi,

I noticed, that if I use the pinmux Utility to generate the Init Code for PF0, the line for unlocking looked like this:

    // Enable port PF0 for COMP0 C0O
    // First open the lock and select the bits we want to modify in the GPIO commit register.
    //
    HWREG(GPIO_PORTF_BASE + GPIO_O_LOCK) = GPIO_LOCK_KEY_DD;
    HWREG(GPIO_PORTF_BASE + GPIO_O_CR) = 0x1;

    //
    // Now modify the configuration of the pins that we unlocked.
    //
    MAP_GPIOPinConfigure(GPIO_PF0_C0O);
    MAP_GPIOPinTypeComparator(GPIO_PORTF_BASE, GPIO_PIN_0);

This worked with the Stellarisware and the LM4F just fine.

Now I am trying to port this to a TIVA Controller TM4C123GH6PM.

The latest version of the Pinmux utility 1.0.2 already says Tiva C Series, but the code on this is unchanged.

Problem is, that the -DD Suffix seems unsupported now and generates a compiler error.

Taken from the current Tiva hw_gpio.h the value seems to match the old -DD value.

#define GPIO_LOCK_KEY           0x4C4F434B  // Unlocks the GPIO_CR register

 I have not had a chance to test the new hardware, and was wondering, if anyone has encountered any problems with this?

Possibly the pinmux utility needs a fix in that case?

Greetings,

Jan