From 044ad7c3987460ede48ff27afd6bdb0ca05a0432 Mon Sep 17 00:00:00 2001 From: Harald Welte Date: Mon, 4 Jul 2011 20:52:54 +0200 Subject: import at91lib from at91lib_20100901_softpack_1_9_v_1_0_svn_v15011 it's sad to see that atmel doesn't publish their svn repo or has a centralized location or even puts proper version/release info into the library itself --- utility/led.c | 162 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 162 insertions(+) create mode 100644 utility/led.c (limited to 'utility/led.c') diff --git a/utility/led.c b/utility/led.c new file mode 100644 index 0000000..7048b2a --- /dev/null +++ b/utility/led.c @@ -0,0 +1,162 @@ +/* ---------------------------------------------------------------------------- + * ATMEL Microcontroller Software Support + * ---------------------------------------------------------------------------- + * Copyright (c) 2008, 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. + * ---------------------------------------------------------------------------- + */ + +//------------------------------------------------------------------------------ +// Headers +//------------------------------------------------------------------------------ + +#include "led.h" +#include +#include + +//------------------------------------------------------------------------------ +// Local Variables +//------------------------------------------------------------------------------ + +#ifdef PINS_LEDS +static const Pin pinsLeds[] = {PINS_LEDS}; +static const unsigned int numLeds = PIO_LISTSIZE(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 led Number of the LED to configure. +/// \return 1 if the LED exists and has been configured; otherwise 0. +//------------------------------------------------------------------------------ +unsigned char LED_Configure(unsigned int 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 led Number of the LED to turn on. +/// \return 1 if the LED has been turned on; 0 otherwise. +//------------------------------------------------------------------------------ +unsigned char LED_Set(unsigned int 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 led Number of the LED to turn off. +/// \param 1 if the LED has been turned off; 0 otherwise. +//------------------------------------------------------------------------------ +unsigned char LED_Clear(unsigned int 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 led Number of the LED to toggle. +/// \return 1 if the LED has been toggled; otherwise 0. +//------------------------------------------------------------------------------ +unsigned char LED_Toggle(unsigned int led) +{ +#ifdef PINS_LEDS + // Check if LED exists + if (led >= numLeds) { + + return 0; + } + + // Toggle LED + if (PIO_GetOutputDataStatus(&pinsLeds[led])) { + + PIO_Clear(&pinsLeds[led]); + } + else { + + PIO_Set(&pinsLeds[led]); + } + + return 1; +#else + return 0; +#endif +} + -- cgit v1.2.3