1 /* ----------------------------------------------------------------------------
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2 * ATMEL Microcontroller Software Support
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3 * ----------------------------------------------------------------------------
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4 * Copyright (c) 2008, Atmel Corporation
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6 * All rights reserved.
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8 * Redistribution and use in source and binary forms, with or without
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9 * modification, are permitted provided that the following conditions are met:
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11 * - Redistributions of source code must retain the above copyright notice,
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12 * this list of conditions and the disclaimer below.
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14 * Atmel's name may not be used to endorse or promote products derived from
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15 * this software without specific prior written permission.
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17 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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20 * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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23 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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24 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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25 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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26 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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27 * ----------------------------------------------------------------------------
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31 Title: LED implementation
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34 Implementation of LED-related functionalities.
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37 //------------------------------------------------------------------------------
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39 //------------------------------------------------------------------------------
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43 #include <pio/pio.h>
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45 //------------------------------------------------------------------------------
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46 // Internal variables
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47 //------------------------------------------------------------------------------
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50 static const Pin pinsLeds[] = {PINS_LEDS};
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51 static const unsigned int numLeds = PIO_LISTSIZE(pinsLeds);
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54 //------------------------------------------------------------------------------
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55 // Exported functions
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56 //------------------------------------------------------------------------------
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58 Function: LED_Configure
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59 Configures the pin associated with the given LED number.
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62 led - Number of the LED to configure.
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65 1 if the LED exists and has been configured; otherwise 0.
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67 unsigned char LED_Configure(unsigned int led)
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70 // Check that LED exists
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71 if (led >= numLeds) {
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77 return (PIO_Configure(&pinsLeds[led], 1));
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88 led - Number of the LED to turn on.
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91 1 if the LED has been turned on; 0 otherwise.
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93 unsigned char LED_Set(unsigned int led)
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96 // Check if LED exists
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97 if (led >= numLeds) {
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103 if (pinsLeds[led].type == PIO_OUTPUT_0) {
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105 PIO_Set(&pinsLeds[led]);
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109 PIO_Clear(&pinsLeds[led]);
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119 Function: LED_Clear
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123 led - Number of the LED to turn off.
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126 1 if the LED has been turned off; 0 otherwise.
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128 unsigned char LED_Clear(unsigned int led)
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131 // Check if LED exists
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132 if (led >= numLeds) {
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138 if (pinsLeds[led].type == PIO_OUTPUT_0) {
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140 PIO_Clear(&pinsLeds[led]);
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144 PIO_Set(&pinsLeds[led]);
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154 Function: LED_Toggle
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155 Toggles the current state of a LED.
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158 led - Number of the LED to toggle.
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161 1 if the LED has been toggled; otherwise 0.
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163 unsigned char LED_Toggle(unsigned int led)
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166 // Check if LED exists
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167 if (led >= numLeds) {
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173 if (PIO_GetOutputDataStatus(&pinsLeds[led])) {
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175 PIO_Clear(&pinsLeds[led]);
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179 PIO_Set(&pinsLeds[led]);
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