IO Port API

Access functions for the SAMD I/O Controller More...

Collaboration diagram for IO Port API:

Functions
void	gpio_mode_setup (uint32_t gpioport, uint8_t mode, uint8_t cnf, uint32_t gpios)
	Initialize GPIO pins. More...
void	gpio_set_af (uint32_t gpioport, uint8_t af, uint32_t gpios)
	Alternate function GPIO pins. More...
void	gpio_set (uint32_t gpioport, uint32_t gpios)
	Set a group of Pins. More...
void	gpio_clear (uint32_t gpioport, uint32_t gpios)
	Clear a group of Pins. More...
uint32_t	gpio_get (uint32_t gpioport, uint32_t gpios)
	Read level of a group of Pins. More...
void	gpio_toggle (uint32_t gpioport, uint32_t gpios)
	Toggle level of a group of Pins. More...
uint32_t	port_read (uint32_t port)
	Read level for all pins from a port. More...
void	port_write (uint32_t port, uint32_t data)
	Set level for all pins from a port. More...

Detailed Description

Access functions for the SAMD I/O Controller

Date

10 April 2020

Copyright

SPDX: LGPL-3.0-or-later

Author

2020 Gwenhael Goavec-Merou gwenh.nosp@m.ael..nosp@m.goave.nosp@m.c-me.nosp@m.rou@t.nosp@m.rabu.nosp@m.cayre.nosp@m..com

Function Documentation

gpio_clear()

void gpio_clear	(	uint32_t	gpioport,
		uint32_t	gpios
	)

Clear a group of Pins.

Clear a group of Pins for the given port.

Parameters

[in]	gpioport	port register address base Port Base registers
[in]	gpios	GPIO Pin Identifiers. Any combination of pins may be specified by OR'ing then together.

Definition at line 108 of file port.c.

References PORT_OUTCLR.

gpio_get()

uint32_t gpio_get	(	uint32_t	gpioport,
		uint32_t	gpios
	)

Read level of a group of Pins.

Read the level of a group of Pins for the given port.

Parameters

[in]	gpioport	port register address base Port Base registers
[in]	gpios	GPIO Pin Identifiers. Any combination of pins may be specified by OR'ing then together.

Definition at line 121 of file port.c.

References PORT_IN.

gpio_mode_setup()

void gpio_mode_setup	(	uint32_t	gpioport,
		uint8_t	mode,
		uint8_t	cnf,
		uint32_t	gpios
	)

Initialize GPIO pins.

Configure a group of Pins for the given port.

Parameters

[in]	gpioport	port register address base Port Base registers
[in]	mode	direction GPIO Pin direction
[in]	cnf	configuration mode GPIO mode configuration
[in]	gpios	GPIO Pin Identifiers. Any combination of pins may be specified by OR'ing then together.

Definition at line 23 of file port.c.

References GPIO_CNF_AF, GPIO_CNF_PULLDOWN, GPIO_CNF_PULLUP, GPIO_MODE_INPUT, GPIO_MODE_OUTPUT, PORT_DIRCLR, PORT_DIRSET, PORT_OUTCLR, PORT_OUTSET, PORT_WRCONFIG, PORT_WRCONFIG_HWSEL, PORT_WRCONFIG_INEN, PORT_WRCONFIG_PINMASK, PORT_WRCONFIG_PMUXEN, PORT_WRCONFIG_PULLEN, and PORT_WRCONFIG_WRPINCFG.

gpio_set()

void gpio_set	(	uint32_t	gpioport,
		uint32_t	gpios
	)

Set a group of Pins.

Set a group of Pins for the given port.

Parameters

[in]	gpioport	port register address base Port Base registers
[in]	gpios	GPIO Pin Identifiers. Any combination of pins may be specified by OR'ing then together.

Definition at line 95 of file port.c.

References PORT_OUTSET.

gpio_set_af()

void gpio_set_af	(	uint32_t	gpioport,
		uint8_t	af,
		uint32_t	gpios
	)

Alternate function GPIO pins.

Configure a group of Pins in alternate function.

Parameters

[in]	gpioport	port register address base Port Base registers
[in]	af	pmux configuration GPIO mux configuration
[in]	gpios	GPIO Pin Identifiers. Any combination of pins may be specified by OR'ing then together.

Definition at line 73 of file port.c.

References PORT_WRCONFIG, PORT_WRCONFIG_HWSEL, PORT_WRCONFIG_PINMASK, PORT_WRCONFIG_PMUX, PORT_WRCONFIG_PMUXEN, PORT_WRCONFIG_WRPINCFG, and PORT_WRCONFIG_WRPMUX.

gpio_toggle()

void gpio_toggle	(	uint32_t	gpioport,
		uint32_t	gpios
	)

Toggle level of a group of Pins.

Toggle one or more pins of the givent port.

Parameters

[in]	gpioport	port register address base Port Base registers
[in]	gpios	GPIO Pin Identifiers. Any combination of pins may be specified by OR'ing then together.

Definition at line 134 of file port.c.

References PORT_OUTTGL.

port_read()

uint32_t port_read

(

uint32_t

port

)

Read level for all pins from a port.

Read the level of all pins of the given port.

Parameters

[in]

port

register address base Port Base registers

Returns

The level of all pins on the port.

Definition at line 147 of file port.c.

References PORT_IN.

port_write()

void port_write	(	uint32_t	port,
		uint32_t	data
	)

Set level for all pins from a port.

Set the level of all pins of the given port.

Parameters

[in]	port	register address base Port Base registers
[in]	data	GPIO Pin Identifiers. Any combination of pins may be specified by OR'ing then together.

Definition at line 160 of file port.c.

References PORT_OUT.