MSPM0G3107: Is there an API to set a GPIO pin state to Hi-Z?

Anandhakrishnan Ramasamy

Prodigy 20 points

Part Number: MSPM0G3107
Other Parts Discussed in Thread: SYSCONFIG

Below APIs help set the GPIO pins to HIGH and LOW state.

DL_GPIO_setPins()

DL_GPIO_clearPins()

DL_GPIO_togglePins()

Is there an API to set a GPIO pin state to Hi-Z?

10 months ago

0 Jace H 10 months ago

TI__Guru 56685 points

Hello,

Yes, please see DL_GPIO_enableHiZ(pincmIndex) and DL_GPIO_disableHiZ(pincmIndex)

0 Anandhakrishnan Ramasamy 10 months ago in reply to Jace H

Prodigy 20 points

Thank you for the quick response

0 Keith Barkley 10 months ago in reply to Jace H

Guru 39010 points

How do you get from GPIO_Regs *gpio, uint32_t pins as used in setPins to pincmindex?

Or is enableOutput()/disableOutput() more equivalent?

0 Jace H 10 months ago in reply to Keith Barkley

TI__Guru 56685 points

Keith,

More equivalent to setting the pullup for an individual pin. Its manipulating the IOMUX register of the individual pin (which enables all the features/muxing) rather than manipulating the GPIO registers which are port based and grouped.

0 Keith Barkley 10 months ago in reply to Jace H

Guru 39010 points

What I am saying is given a " GPIO_Regs *gpio, uint32_t pins", which I normally use to access the GPIO, how do I find the pincmindex?

0 Anandhakrishnan Ramasamy 10 months ago in reply to Keith Barkley

Prodigy 20 points

PINCMx index to PIN NAME mapping is available in the datasheet table 6-1 Pin Attributes.

The corresponding enumeration is available in IOMUX_PINCM.

0 Jace H 10 months ago in reply to Anandhakrishnan Ramasamy

TI__Guru 56685 points

Keith,

With the generated source from Sysconfig, the definitions for the IOMUX are made available as well. See code snippet below:

/* Port definition for Pin Group GPIO_LEDS */
#define GPIO_LEDS_PORT                                                   (GPIOB)

/* Defines for USER_LED_1: GPIOB.22 with pinCMx 50 on package pin 21 */
#define GPIO_LEDS_USER_LED_1_PIN                                (DL_GPIO_PIN_22)
#define GPIO_LEDS_USER_LED_1_IOMUX                               (IOMUX_PINCM50)

0 Keith Barkley 10 months ago in reply to Jace H

Guru 39010 points

Thanks to both of you.

0 Keith Barkley 10 months ago in reply to Jace H

Guru 39010 points

I saw those defines and I wondered what they were for. Now I know!

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MSPM0G3107: Is there an API to set a GPIO pin state to Hi-Z?