Activate a single GPIO

[GorkaC]

Hi,

I'm working with the SLN-LOCAL-IOT Audio Kit and the SLN-LOCAL2-IOT-preRC5(SDK) version.

The thing is, it is recommended to use a function that comes with the firmware but I don't find a function that activates a single GPIO. 

By the way, I see that the function "GPIO_PinWrite(GPIO_Type *base, uint32_t pin, uint8_t output)"  is used to write in output pins but I don't know which are the parameters needed this function. 

Thanks very much, hope you help me with this problem.

[GorkaC]

Hi Jeremy,

Thanks for your quick reply. We tried the blinky led demo (iled_blinky) on our Kit but it does not blink the RED LED like it is supposed to do. 

Code:

And the defines:

We are working with a MIMXRT106SDVL6B.

How can I know the number of each pin of the micro if that's the problem? (Number of the pin related to the number of the parameters in the blinky function).

[jeremyzhou · Accepted solution]

Hi,
Thanks for your reply.
According to the above code, I didn't find the initialization code of the GPIO pin, and I guess your issue is related to missing the initialization code.
In the BOARD_InitPins() function, it illustrates how to configure the pin as the GPIO pin, please refer to it.
Have a great day,
TIC

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[jeremyzhou]

Hi,
Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.
Below is the comments of the GPIO_PinWrite(GPIO_Type *base, uint32_t pin, uint8_t output) function.

/*!
* brief Sets the output level of the individual GPIO pin to logic 1 or 0.
*
* param base GPIO base pointer.
* param pin GPIO port pin number.
* param output GPIOpin output logic level.
* - 0: corresponding pin output low-logic level.
* - 1: corresponding pin output high-logic level.
*/

And I'd like to suggest you refer to iled_blinky demo in the SDK library to learn to configure a pin as the GPIO output pin.
Have a great day,
TIC

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[GorkaC]

Hi Jeremy,

The iled_blinky demo didn't work.