lpc17_gpio.h File Reference

#include "gpio_17xx_40xx.h"

Include dependency graph for lpc17_gpio.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Macros
#define	LPC17_GPIO_H_
	GPIO functions redirection for LPC17xx.
#define	GPIO_LEVEL_LOW   0
#define	GPIO_LEVEL_HIGH   1
#define	GPIO_DIR_INPUT   0
#define	GPIO_DIR_OUTPUT   1
#define	gpio_init()   Chip_GPIO_Init( LPC_GPIO )
	Initialize GPIO block.
#define	gpio_read_pin(port, pin)   Chip_GPIO_GetPinState( LPC_GPIO, port, pin )
	Reads a GPIO pin state.
#define	gpio_read_port(port)   Chip_GPIO_GetPortValue( LPC_GPIO, port )
	Reads a GPIO port state.
#define	gpio_set_pin_high(port, pin)   Chip_GPIO_SetPinOutHigh( LPC_GPIO, port, pin )
	Set an individual GPIO output pin to the high state.
#define	gpio_set_port_high(port, mask)   Chip_GPIO_SetPortOutHigh( LPC_GPIO, port, mask )
	Set selected GPIO output pins to the high state.
#define	gpio_set_pin_low(port, pin)   Chip_GPIO_SetPinOutLow( LPC_GPIO, port, pin )
	Set an individual GPIO output pin to the high state.
#define	gpio_set_port_low(port, mask)   Chip_GPIO_SetPortOutLow( LPC_GPIO, port, mask )
	Set selected GPIO output pins to the high state.
#define	gpio_pin_toggle(port, pin)   Chip_GPIO_SetPinToggle( LPC_GPIO, port, pin )
	Toggle an individual GPIO output pin to the opposite state.
#define	gpio_set_pin_state(port, pin, state)   Chip_GPIO_SetPinState( LPC_GPIO, port, pin, state )
	Set a GPIO pin to the specified state.
#define	gpio_set_pin_dir(port, pin, dir)   Chip_GPIO_SetPinDIR( LPC_GPIO, port, pin, dir )
	Set a GPIO pin direction.
#define	gpio_get_pin_dir(port, pin)   Chip_GPIO_GetPinDIR( LPC_GPIO, port, pin )
	Get a GPIO pin direction.
#define	gpio_set_port_dir(port, dir)   Chip_GPIO_SetPortDIR( LPC_GPIO, port, dir )
	Set a GPIO port direction.
#define	gpio_get_port_dir(port)   Chip_GPIO_GetPortDIR( LPC_GPIO, port )
	Get a GPIO port direction.

Macro Definition Documentation

GPIO_DIR_INPUT

#define GPIO_DIR_INPUT   0

GPIO_DIR_OUTPUT

#define GPIO_DIR_OUTPUT   1

gpio_get_pin_dir

#define gpio_get_pin_dir	(		port,
			pin )   Chip_GPIO_GetPinDIR( LPC_GPIO, port, pin )

Get a GPIO pin direction.

Parameters

port	: GPIO Port number where pin is located
pin	: pin number

Returns

Current pin direction ( 0 for INPUT, 1 for OUTPUT )

gpio_get_port_dir

#define gpio_get_port_dir

(

port

)

Chip_GPIO_GetPortDIR( LPC_GPIO, port )

Get a GPIO port direction.

Parameters

port	: GPIO Port number

Returns

Bitfield indicating all pins current direction (true (1) for OUTPUT, false (0) for INPUT )

gpio_init

#define gpio_init

(

)

Chip_GPIO_Init( LPC_GPIO )

Initialize GPIO block.

Returns

Nothing

GPIO_LEVEL_HIGH

#define GPIO_LEVEL_HIGH   1

GPIO_LEVEL_LOW

#define GPIO_LEVEL_LOW   0

gpio_pin_toggle

#define gpio_pin_toggle	(		port,
			pin )   Chip_GPIO_SetPinToggle( LPC_GPIO, port, pin )

Toggle an individual GPIO output pin to the opposite state.

Parameters

port	: GPIO Port number where the pin is located
pin	: pin number

Note

This commands only applies for pins selected as outputs. Writing '0' shouldn't affect the pin state

gpio_read_pin

#define gpio_read_pin	(		port,
			pin )   Chip_GPIO_GetPinState( LPC_GPIO, port, pin )

Reads a GPIO pin state.

Parameters

port	: GPIO Port number where pin is located
pin	: GPIO pin to get state for

Returns

true (1) if the GPIO is high, false (0) if low

gpio_read_port

#define gpio_read_port

(

port

)

Chip_GPIO_GetPortValue( LPC_GPIO, port )

Reads a GPIO port state.

Parameters

port	: GPIO Port number

Returns

Current state of all pins in the specified port

gpio_set_pin_dir

#define gpio_set_pin_dir	(		port,
			pin,
			dir )   Chip_GPIO_SetPinDIR( LPC_GPIO, port, pin, dir )

Set a GPIO pin direction.

Parameters

port	: GPIO Port number where pin is located
pin	: pin number
dir	: true (1) for OUTPUT, false (0) for INPUT

gpio_set_pin_high

#define gpio_set_pin_high	(		port,
			pin )   Chip_GPIO_SetPinOutHigh( LPC_GPIO, port, pin )

Set an individual GPIO output pin to the high state.

Parameters

port	: GPIO Port number where pin is located
pin	: pin number

Note

This commands only applies for pins selected as outputs. Writing '0' shouldn't affect the pin state

gpio_set_pin_low

#define gpio_set_pin_low	(		port,
			pin )   Chip_GPIO_SetPinOutLow( LPC_GPIO, port, pin )

Set an individual GPIO output pin to the high state.

Parameters

port	: GPIO Port number where pin is located
pin	: pin number

Note

This commands only applies for pins selected as outputs. Writing '0' shouldn't affect the pin state

gpio_set_pin_state

#define gpio_set_pin_state	(		port,
			pin,
			state )   Chip_GPIO_SetPinState( LPC_GPIO, port, pin, state )

Set a GPIO pin to the specified state.

Parameters

port	: GPIO Port number where pin is located
pin	: pin number
state	: true (1) for high, false (0) for low

gpio_set_port_dir

#define gpio_set_port_dir	(		port,
			dir )   Chip_GPIO_SetPortDIR( LPC_GPIO, port, dir )

Set a GPIO port direction.

Parameters

port	: GPIO Port number
dir	: Bitfield indicating all pins direction (true (1) for OUTPUT, false (0) for INPUT )

gpio_set_port_high

#define gpio_set_port_high	(		port,
			mask )   Chip_GPIO_SetPortOutHigh( LPC_GPIO, port, mask )

Set selected GPIO output pins to the high state.

Parameters

port	: GPIO Port number where pin is located
mask	: Selected pins to set high

Note

This commands only applies for pins selected as outputs. Writing '0' shouldn't affect the pin state

gpio_set_port_low

#define gpio_set_port_low	(		port,
			mask )   Chip_GPIO_SetPortOutLow( LPC_GPIO, port, mask )

Set selected GPIO output pins to the high state.

Parameters

port	: GPIO Port number where pin is located
mask	: Selected pins to set high

Note

This commands only applies for pins selected as outputs. Writing '0' shouldn't affect the pin state

LPC17_GPIO_H_

#define LPC17_GPIO_H_

GPIO functions redirection for LPC17xx.

Author

Henrique Silva henri.nosp@m.que..nosp@m.silva.nosp@m.@lnl.nosp@m.s.br, LNLS