topic Re: KW47: Using GPIO Port D in Wireless MCU

KW47: Using GPIO Port D

alanlow — Mon, 23 Feb 2026 02:36:13 GMT

Hi,

I realized that there is no definition of kCLOCK_GpioD and kCOCK_PortD in the fsl_clock.h.

Is there any sample code to initialize Port D for KW47?

Thanks.

Re: KW47: Using GPIO Port D

tejoka5968 — Mon, 23 Feb 2026 05:39:50 GMT

Hello!

On KW47, there are no kCLOCK_GpioD or kCLOCK_PortD definitions in fsl_clock.h because Port D isn’t part of the KW47 clock tree. Only ports A, B, C, and E are supported. To initialize a port, enable its clock with CLOCK_EnableClock(kCLOCK_PortX), set the pin mux using PORT_SetPinMux(), and then configure the GPIO with GPIO_PinInit(). For reference, check the KW47 SDK GPIO demos (like LED toggle) which show the correct initialization flow.

Re: KW47: Using GPIO Port D

sofiaurueta — Tue, 24 Feb 2026 00:00:18 GMT

Hello,
Hope you are doing well.

There is an example in the SDK that uses PTD1. You could use that implementation as a reference for configuring the PORT D GPIO.

Although using Config Tools with wireless examples is not recommended as it may modify required configurations, you can create a blank project to generate the code that enables the port using Config Tools and then manually copy that code into your existing project.

Best regards,
Ana Sofia.

Re: KW47: Using GPIO Port D

alanlow — Tue, 24 Feb 2026 01:49:54 GMT

Hi Sofia,

Thanks for your quick response. May I know which example you are reference?

Thanks!

Re: KW47: Using GPIO Port D

sofiaurueta — Tue, 24 Feb 2026 22:04:11 GMT

Hello,

The implementation is included in the SDK, please see in pin_mux.c file, the function BOARD_InitPinButton0 which configures the pin routing for PTD1, as well as defines for GPIOD, PORTD in pin_mux.h file.

Best regards,
Ana Sofia.