Multiplex configured the GPIO_ AD0 as a normal GPIO (RT1011)

TOM888 — Fri, 28 Apr 2023 10:10:20 GMT

Hi,

On the RT1011 chip, I want to multiplex configure the GPIO_ AD0 as a normal GPIO port to output the high or low electrical Level. Could you please provide me an example or some reference documents.

Thanks.

Re: Multiplex configured the GPIO_ AD0 as a normal GPIO (RT1011)

RaRo — Fri, 28 Apr 2023 19:26:37 GMT

Hello @TOM888,

You could choose the GPIO functionality like follows:

MCUXpresso IDE ConfigTools (MCUXpresso ConfigTools)

First, import an SDK example or create a new project.
Second, go to Pins view in ConfigTools

Then, choose the project you are working with.

After that, search for GPIO_AD0's pins

Next, select the pins one by one and choose the pin functionality you want to use.

Note: You could modify some pin's characteristics in Routing Details

Finally, update your code and go back to your workspace.

MCUXpresso IDE (Code)

You could change or choose the functionality of each one of the GPIO_AD0 pins changing the IOMUXC and GPIO registers. In the following example, we show you how to write the GPIO_AD0_9 to GPIO1: GPIOMUX_IO23 as Output:

pin_mux.c

/* GPIO configuration of ADC12_4 on GPIO_AD_09 (pin 48) */ gpio_pin_config_t ADC12_4_config = { .direction = kGPIO_DigitalOutput, .outputLogic = 0U, .interruptMode = kGPIO_NoIntmode }; /* Initialize GPIO functionality on GPIO_AD_09 (pin 48) */ GPIO_PinInit(GPIO1, 23U, &ADC12_4_config); IOMUXC_SetPinMux(IOMUXC_GPIO_AD_09_GPIOMUX_IO23, 0U); IOMUXC_GPR->GPR26 = ((IOMUXC_GPR->GPR26 & (~(BOARD_INITPINS_IOMUXC_GPR_GPR26_GPIO_SEL_MASK))) | IOMUXC_GPR_GPR26_GPIO_SEL(0x00U));

pin_mux.h

#define BOARD_INITPINS_IOMUXC_GPR_GPR26_GPIO_SEL_MASK 0x800000U /*!< Select GPIO1 or GPIO2: affected bits mask */ /* GPIO_AD_09 (number 48), ADC12_4/JTAG_TDO/J55[6]/J26[4] */ /* Routed pin properties */ #define BOARD_INITPINS_ADC12_4_PERIPHERAL GPIO1 /*!< Peripheral name */ #define BOARD_INITPINS_ADC12_4_SIGNAL gpiomux_io /*!< Signal name */ #define BOARD_INITPINS_ADC12_4_CHANNEL 23U /*!< Signal channel */

Let us know if this helps you.

Best regards, Raul.

Re: Multiplex configured the GPIO_ AD0 as a normal GPIO (RT1011)

TOM888 — Thu, 04 May 2023 04:53:03 GMT

Hi, Raul,

Thanks for the detailed explanation, this topic has been resolved.

Best regards!

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Multiplex configured the GPIO_ AD0 as a normal GPIO (RT1011)

Re: Multiplex configured the GPIO_ AD0 as a normal GPIO (RT1011)

Re: Multiplex configured the GPIO_ AD0 as a normal GPIO (RT1011)