/* ---------------------------------------------------------------------------- | |
* SAM Software Package License | |
* ---------------------------------------------------------------------------- | |
* Copyright (c) 2015, Atmel Corporation | |
* | |
* All rights reserved. | |
* | |
* 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 disclaimer below. | |
* | |
* Atmel's name may not be used to endorse or promote products derived from | |
* this software without specific prior written permission. | |
* | |
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR | |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE | |
* DISCLAIMED. IN NO EVENT SHALL ATMEL 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. | |
* ---------------------------------------------------------------------------- | |
*/ | |
/** | |
* \file | |
*/ | |
/*------------------------------------------------------------------------------ | |
* Headers | |
*------------------------------------------------------------------------------*/ | |
#include "board.h" | |
#include "misc/led.h" | |
#include "peripherals/pio.h" | |
/*------------------------------------------------------------------------------ | |
* Local Variables | |
*------------------------------------------------------------------------------*/ | |
#ifdef PINS_LEDS | |
static const struct _pin pinsLeds[] = PINS_LEDS; | |
static const uint32_t numLeds = ARRAY_SIZE(pinsLeds); | |
#endif | |
/*------------------------------------------------------------------------------ | |
* Global Functions | |
*------------------------------------------------------------------------------*/ | |
/** | |
* Configures the pin associated with the given LED number. If the LED does | |
* not exist on the board, the function does nothing. | |
* \param dwLed Number of the LED to configure. | |
* \return 1 if the LED exists and has been configured; otherwise 0. | |
*/ | |
extern uint32_t led_configure (uint32_t led) | |
{ | |
#ifdef PINS_LEDS | |
// Check that LED exists | |
if (led >= numLeds) { | |
return 0; | |
} | |
// Configure LED | |
return pio_configure(&pinsLeds[led], 1); | |
#else | |
return 0; | |
#endif | |
} | |
/** | |
* Turns the given LED on if it exists; otherwise does nothing. | |
* \param dwLed Number of the LED to turn on. | |
* \return 1 if the LED has been turned on; 0 otherwise. | |
*/ | |
extern uint32_t led_set(uint32_t led) | |
{ | |
#ifdef PINS_LEDS | |
/* Check if LED exists */ | |
if (led >= numLeds) { | |
return 0; | |
} | |
/* Turn LED on */ | |
if (pinsLeds[led].type == PIO_OUTPUT_0) { | |
pio_set(&pinsLeds[led]); | |
} else { | |
pio_clear(&pinsLeds[led]); | |
} | |
return 1; | |
#else | |
return 0; | |
#endif | |
} | |
/** | |
* Turns a LED off. | |
* | |
* \param dwLed Number of the LED to turn off. | |
* \return 1 if the LED has been turned off; 0 otherwise. | |
*/ | |
extern uint32_t led_clear (uint32_t led) | |
{ | |
#ifdef PINS_LEDS | |
/* Check if LED exists */ | |
if (led >= numLeds) { | |
return 0; | |
} | |
/* Turn LED off */ | |
if (pinsLeds[led].type == PIO_OUTPUT_0) { | |
pio_clear(&pinsLeds[led]); | |
} else { | |
pio_set(&pinsLeds[led]); | |
} | |
return 1; | |
#else | |
return 0; | |
#endif | |
} | |
/** | |
* Toggles the current state of a LED. | |
* | |
* \param dwLed Number of the LED to toggle. | |
* \return 1 if the LED has been toggled; otherwise 0. | |
*/ | |
extern uint32_t led_toggle(uint32_t led) | |
{ | |
#ifdef PINS_LEDS | |
/* Check if LED exists */ | |
if (led >= numLeds) { | |
return 0; | |
} | |
/* Toggle LED */ | |
if (pio_get_output_data_status(&pinsLeds[led])) { | |
pio_clear(&pinsLeds[led]); | |
} else { | |
pio_set(&pinsLeds[led]); | |
} | |
return 1; | |
#else | |
return 0; | |
#endif | |
} |