00001 /* ---------------------------------------------------------------------------- */ 00002 /* Atmel Microcontroller Software Support */ 00003 /* SAM Software Package License */ 00004 /* ---------------------------------------------------------------------------- */ 00005 /* Copyright (c) 2015, Atmel Corporation */ 00006 /* */ 00007 /* All rights reserved. */ 00008 /* */ 00009 /* Redistribution and use in source and binary forms, with or without */ 00010 /* modification, are permitted provided that the following condition is met: */ 00011 /* */ 00012 /* - Redistributions of source code must retain the above copyright notice, */ 00013 /* this list of conditions and the disclaimer below. */ 00014 /* */ 00015 /* Atmel's name may not be used to endorse or promote products derived from */ 00016 /* this software without specific prior written permission. */ 00017 /* */ 00018 /* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR */ 00019 /* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */ 00020 /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE */ 00021 /* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, */ 00022 /* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT */ 00023 /* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, */ 00024 /* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF */ 00025 /* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING */ 00026 /* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, */ 00027 /* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ 00028 /* ---------------------------------------------------------------------------- */ 00029 00030 /** 00031 * \file 00032 */ 00033 00034 /*----------------------------------------------------------------------------- 00035 * Headers 00036 *----------------------------------------------------------------------------*/ 00037 00038 #include "board.h" 00039 00040 /*------------------------------------------------------------------------------ 00041 * Local Variables 00042 *----------------------------------------------------------------------------*/ 00043 00044 #ifdef PINS_LEDS 00045 static const Pin pinsLeds[] = PINS_LEDS; 00046 static const uint32_t numLeds = PIO_LISTSIZE(pinsLeds); 00047 #endif 00048 00049 /*------------------------------------------------------------------------------ 00050 * Global Functions 00051 *----------------------------------------------------------------------------*/ 00052 00053 /** 00054 * Configures the pin associated with the given LED number. If the LED does 00055 * not exist on the board, the function does nothing. 00056 * \param led Number of the LED to configure. 00057 * \return 1 if the LED exists and has been configured; otherwise 0. 00058 */ 00059 extern uint32_t LED_Configure(uint32_t dwLed) 00060 { 00061 #ifdef PINS_LEDS 00062 00063 // Check that LED exists 00064 if (dwLed >= numLeds) 00065 return 0; 00066 00067 // Configure LED 00068 return (PIO_Configure(&pinsLeds[dwLed], 1)); 00069 #else 00070 return 0; 00071 #endif 00072 } 00073 00074 /** 00075 * Turns the given LED on if it exists; otherwise does nothing. 00076 * \param led Number of the LED to turn on. 00077 * \return 1 if the LED has been turned on; 0 otherwise. 00078 */ 00079 extern uint32_t LED_Set(uint32_t dwLed) 00080 { 00081 #ifdef PINS_LEDS 00082 00083 /* Check if LED exists */ 00084 if (dwLed >= numLeds) 00085 return 0; 00086 00087 /* Turn LED on */ 00088 if (pinsLeds[dwLed].type == PIO_OUTPUT_0) 00089 PIO_Set(&pinsLeds[dwLed]); 00090 else 00091 PIO_Clear(&pinsLeds[dwLed]); 00092 00093 return 1; 00094 #else 00095 return 0; 00096 #endif 00097 } 00098 00099 /** 00100 * Turns a LED off. 00101 * 00102 * \param led Number of the LED to turn off. 00103 * \return 1 if the LED has been turned off; 0 otherwise. 00104 */ 00105 extern uint32_t LED_Clear(uint32_t dwLed) 00106 { 00107 #ifdef PINS_LEDS 00108 00109 /* Check if LED exists */ 00110 if (dwLed >= numLeds) 00111 return 0; 00112 00113 /* Turn LED off */ 00114 if (pinsLeds[dwLed].type == PIO_OUTPUT_0) 00115 PIO_Clear(&pinsLeds[dwLed]); 00116 else 00117 PIO_Set(&pinsLeds[dwLed]); 00118 00119 return 1; 00120 #else 00121 return 0; 00122 #endif 00123 } 00124 00125 /** 00126 * Toggles the current state of a LED. 00127 * 00128 * \param led Number of the LED to toggle. 00129 * \return 1 if the LED has been toggled; otherwise 0. 00130 */ 00131 extern uint32_t LED_Toggle(uint32_t dwLed) 00132 { 00133 #ifdef PINS_LEDS 00134 00135 /* Check if LED exists */ 00136 if (dwLed >= numLeds) 00137 return 0; 00138 00139 /* Toggle LED */ 00140 if (PIO_GetOutputDataStatus(&pinsLeds[dwLed])) 00141 PIO_Clear(&pinsLeds[dwLed]); 00142 else 00143 PIO_Set(&pinsLeds[dwLed]); 00144 00145 return 1; 00146 #else 00147 return 0; 00148 #endif 00149 } 00150