GPIO Peripheral API

GPIO Application Programming Interface. More...

Collaboration diagram for GPIO Peripheral API:

Functions
void	gpio_mode_setup (uint32_t gpioport, gpio_mode_t mode, ccs_pull_updown_t pull_up_down, uint16_t gpios)
	Set the IO mode and pull-up/down configuration for the pins. More...
void	gpio_set_outmask (uint32_t gpioport, bool enable, uint16_t gpios)
	Set the output mask (disable changes) to the output pins specified. More...
void	gpio_set (uint32_t gpioport, uint16_t gpios)
	Set the port pins specified to the true state. More...
void	gpio_clear (uint32_t gpioport, uint16_t gpios)
	Clear the port pins specified to the false state. More...
uint16_t	gpio_get (uint32_t gpioport, uint16_t gpios)
	Return a masked bitfield of the port specified. More...
void	gpio_set_af (uint32_t gpioport, ccs_muxsel_func_t muxsel, uint16_t gpios)
	Set the function of the pin for this port. More...
void	gpio_set_output_options (uint32_t gpioport, ccs_drive_strength_t strength, uint16_t gpios)
	Set special output options for the gpio pin. More...
void	gpio_set_schmidt_trigger (uint32_t gpioport, bool enable, uint16_t gpios)
	Set input schmidt trigger for glitch rejection on the input pin. More...

Detailed Description

GPIO Application Programming Interface.

Function Documentation

gpio_clear()

void gpio_clear	(	uint32_t	gpioport,
		uint16_t	gpios
	)

Clear the port pins specified to the false state.

Parameters

[in]	gpioport	Port to clear bits on.
[in]	gpios	bitfield of pins to clear.

Definition at line 97 of file gpio.c.

References GPIO_DOCLEARR.

gpio_get()

uint16_t gpio_get	(	uint32_t	gpioport,
		uint16_t	gpios
	)

Return a masked bitfield of the port specified.

Parameters

[in]	gpioport	Port to read the bits from.
[in]	gpios	bitfield mask to apply to the port read.

Returns

masked bitfield of the port.

Definition at line 101 of file gpio.c.

References GPIO_INR.

gpio_mode_setup()

void gpio_mode_setup	(	uint32_t	gpioport,
		gpio_mode_t	mode,
		ccs_pull_updown_t	pull_up_down,
		uint16_t	gpios
	)

Set the IO mode and pull-up/down configuration for the pins.

Parameters

[in]	gpioport	Port to configure the alternate function on.
[in]	mode	IO Mode to configure (analog, input, output).
[in]	pull_up_down	Pull configuration (up/down/none) to set for the pins..
[in]	gpios	Pins to set with the mode and pull config specified.

Definition at line 50 of file gpio.c.

References CCS_IO_PULL_DOWN, CCS_IO_PULL_UP, CCS_PDENR, CCS_PUENR, get_ccs_port_base(), GPIO_MODER, and GPIO_MODER_MODE.

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gpio_set()

void gpio_set	(	uint32_t	gpioport,
		uint16_t	gpios
	)

Set the port pins specified to the true state.

Parameters

[in]	gpioport	Port to set bits on.
[in]	gpios	bitfield of pins to set.

Definition at line 93 of file gpio.c.

References GPIO_DOSETR.

gpio_set_af()

void gpio_set_af	(	uint32_t	gpioport,
		ccs_muxsel_func_t	muxsel,
		uint16_t	gpios
	)

Set the function of the pin for this port.

This will modify the pinmux,

Parameters

[in]	gpioport	Port to configure the alternate function on.
[in]	muxsel	Mux select mode to configure on the port and pins.
[in]	gpios	Pins to set with the function specified.

Definition at line 105 of file gpio.c.

References CCS_MUXSELR, CCS_MUXSELR_VAL, and get_ccs_port_base().

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gpio_set_outmask()

void gpio_set_outmask	(	uint32_t	gpioport,
		bool	enable,
		uint16_t	gpios
	)

Set the output mask (disable changes) to the output pins specified.

Parameters

[in]	gpioport	Port to set output mask on.
[in]	enable	Whether to enable or disable output masking.
[in]	gpios	bitfield of pins to set.

Definition at line 83 of file gpio.c.

References GPIO_OUTMASKR.

gpio_set_output_options()

void gpio_set_output_options	(	uint32_t	gpioport,
		ccs_drive_strength_t	strength,
		uint16_t	gpios
	)

Set special output options for the gpio pin.

For this MCU, this is only the drive strength.

Parameters

[in]	gpioport	Port to configure the alternate function on.
[in]	strength	Drive strength (DS_XXMA from ccs.h).
[in]	gpios	Pins to set with the drive strength specified.

Definition at line 124 of file gpio.c.

References CCS_DSR, CCS_DSR_DS_VAL, and get_ccs_port_base().

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gpio_set_schmidt_trigger()

void gpio_set_schmidt_trigger	(	uint32_t	gpioport,
		bool	enable,
		uint16_t	gpios
	)

Set input schmidt trigger for glitch rejection on the input pin.

Parameters

[in]	gpioport	Port to configure the alternate function on.
[in]	enable	True to enable, false to disable the schmidt trigger.
[in]	gpios	Pins to set with the schmidt trigger setting specified.

Definition at line 144 of file gpio.c.

References CCS_DSR, CCS_DSR_SCHMIDT_PIN, and get_ccs_port_base().

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