GPIO

libopencm3 LM4F General Purpose I/O More...

Collaboration diagram for GPIO:

Modules
	GPIO pin configuration
	Enabling and configuring GPIO pins
	GPIO pin control
	Controlling GPIO pins
	GPIO Interrupt control
	Configuring interrupts from GPIO pins

Macros
#define	GPIO_LOCK_UNLOCK_CODE   0x4C4F434B

Detailed Description

libopencm3 LM4F General Purpose I/O

Version

1.0.0

Author

© 2011 Gareth McMullin garet.nosp@m.h@bl.nosp@m.acksp.nosp@m.here.nosp@m..co.n.nosp@m.z

© 2013 Alexandru Gagniuc mr.nu.nosp@m.ke.m.nosp@m.e@gma.nosp@m.il.c.nosp@m.om

Date

16 March 2013

LGPL License Terms libopencm3 License

The LM4F GPIO API provides functionality for accessing the GPIO pins of the LM4F.

Attention

 An important aspect to consider is that libopencm3 uses the
AHB aperture for accessing the GPIO registers on the LM4F. The AHB must be
explicitly enabled with a call to gpio_enable_ahb_aperture() before accessing
any GPIO functionality.

Please see the individual GPIO modules for more details. To use the GPIO, the gpio.h header needs to be included:

#include <libopencm3/lm4f/gpio.h>

Macro Definition Documentation

GPIO_LOCK_UNLOCK_CODE

#define GPIO_LOCK_UNLOCK_CODE   0x4C4F434B

Definition at line 61 of file gpio.c.