LED driver. More...

#include <stdint.h>

Macros
#define	MAX_LEDS 4

#define	MAX_SLOTS 16

#define	SLOT_0 (1 << 0)

#define	SLOT_1 (1 << 1)

#define	SLOT_2 (1 << 2)

#define	SLOT_3 (1 << 3)

#define	SLOT_4 (1 << 4)

#define	SLOT_5 (1 << 5)

#define	SLOT_6 (1 << 6)

#define	SLOT_7 (1 << 7)

#define	SLOT_8 (1 << 8)

#define	SLOT_9 (1 << 9)

#define	SLOT_10 (1 << 10)

#define	SLOT_11 (1 << 11)

#define	SLOT_12 (1 << 12)

#define	SLOT_13 (1 << 13)

#define	SLOT_14 (1 << 14)

#define	SLOT_15 (1 << 15)

#define	ON_OFF_SLOTS_PERIOD_2_DUTY_50 (SLOT_0 \| SLOT_2 \| SLOT_4 \| SLOT_6 \| SLOT_8 \| SLOT_10 \| SLOT_12 \| SLOT_14)

#define	ON_OFF_SLOTS_PERIOD_4_DUTY_50 (SLOT_0 \| SLOT_1 \| SLOT_4 \| SLOT_5 \| SLOT_8 \| SLOT_9 \| SLOT_12 \| SLOT_13)

#define	ON_OFF_SLOTS_PERIOD_8_DUTY_50 (SLOT_0 \| SLOT_1 \| SLOT_2 \| SLOT_3 \| SLOT_8 \| SLOT_9 \| SLOT_10 \| SLOT_11)

#define	ON_OFF_SLOTS_PERIOD_16_DUTY_50 (SLOT_0 \| SLOT_1 \| SLOT_2 \| SLOT_3 \| SLOT_4 \| SLOT_5 \| SLOT_6 \| SLOT_7)

Enumerations
enum	led_state { LED_OFF = 0, LED_ON = 1, LED_BLINK = 2 }

enum	led_mode { LED_ACTIVE_LOW = 0, LED_ACTIVE_HIGH = 1 }

Functions
void	led_init (void)
	Initializes the LED driver.

void	led_set (uint8_t num, enum led_state state)
	Enables or disable an LED. More...

void	led_blink (uint8_t num, uint16_t led_on_mask, uint8_t repeat)
	Makes an LED blink. More...

enum led_state	led_get (uint8_t num)
	Gets the current state of an LED. More...

void	led_toggle (uint8_t num)
	Toggles an LED. More...

Detailed Description

LED driver.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
Neither the name of Archos nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND AND EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ARCHOS S.A. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Function Documentation

void led_blink	(	uint8_t	num,
		uint16_t	led_on_mask,
		uint8_t	repeat
	)

Makes an LED blink.

This function makes an LED blink. A timer will wake up 16 times in 1.2s, giving 16 slots where the LED can be on or off. Slots are numbered from 0 to 15 and last for 75 ms each.

Parameters

num	The number of the LED.
led_on_mask	A mask of all 16 slots. Set only the slots where the LED will be on.
repeat	Number of repeats. 0 forever.

enum led_state led_get ( uint8_t num )

Gets the current state of an LED.

Parameters

num	The number of the LED.

Return values

led_state The current state of the LED.

void led_set	(	uint8_t	num,
		enum led_state	state
	)

Enables or disable an LED.

Parameters

num	The number of the LED.
state	The new state of the LED. This can be LED_OFF, LED_ON, or LED_BLINK.

void led_toggle ( uint8_t num )

Toggles an LED.

This function toggles an LED. A blinking LED will be toggled OFF.

Parameters

num	The number of the LED.

Macros

Enumerations

Functions

Detailed Description

Function Documentation