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Regarding Assignment of value to single pin of any port

Sefu Thakur
Prodigy 80 points

Respected,

I want to give value to certain PIN not full PORT.

With the help of GPIO_PORTG_DATA_R we assign the value to entire PORT.

Like in AVR family microcontroller RS=0; where RS is defined as PIN of Ceratain PORT used to give value to specific PIN of PORT.

So in Tiva series what will be the command to do the same above function. 

  • 0
    Guru 86755 points
    Hi,

    What Tiva Launchpad are you using? I suggest you read the GPIO section of your Tiva MCU datasheet. GPIO section of Tivaware Peripheral Drivers Library Users Guide, and review the blinky example program.

    - kel
  • 0
    TI__Guru**** 244400 points
    Hello Sefu

    Use TivaWare API GPIOPinWrite. That will allow you to write to the pin w/o affecting other pins.

    Regards
    Amit
  • 0 in reply to Amit Ashara
    Guru 47900 points

    And along w/Amit's "GPIOPinWrite()" function - note that the 2nd parameter (therein) enables you to mask "single or multiple port bits" providing individual (or multiple) bit control beyond your past/lesser MCU...

    Post requesting "which" Tiva appears to "not really" apply as this long standing function is fairly uniform across the Tiva (& past Stellaris) pack...

  • 0 in reply to cb1
    TI__Guru**** 244400 points
    Hello cb1,

    I just realized the pitfall of my post: Should have had a better explanation

    As an example if only GPIO Pin 2 and 3 need to be set for GPIO Port A

    GPIOPinWrite(GPIO_PORTA_BASE, (GPIO_PIN_2 | GPIO_PIN_3), (GPIO_PIN_2 | GPIO_PIN_3));

    If only Pin 2 needs to be set without changing the value of Pin 3

    GPIOPinWrite(GPIO_PORTA_BASE, GPIO_PIN_2, GPIO_PIN_2);

    Regards
    Amit
  • 0 in reply to Amit Ashara
    Guru 47900 points

    Indeed Amit, we note that poster "double greened" you - poor cb1 sits (not even) w/in suggested answer-land. (Yet Id'ed that key Param #2...)

    [edit] Let the record show - post identifying (bit-limiting, parameter #2) has been duly rewarded.  (w/like's & green stamp)   Merci - mon ami.