1/* 2 * @brief Digital to Analog Converter example. 3 * 4 * @note 5 * Copyright(C) NXP Semiconductors, 2014 6 * All rights reserved. 7 * 8 * @par 9 * Software that is described herein is for illustrative purposes only 10 * which provides customers with programming information regarding the 11 * LPC products. This software is supplied "AS IS" without any warranties of 12 * any kind, and NXP Semiconductors and its licensor disclaim any and 13 * all warranties, express or implied, including all implied warranties of 14 * merchantability, fitness for a particular purpose and non-infringement of 15 * intellectual property rights. NXP Semiconductors assumes no responsibility 16 * or liability for the use of the software, conveys no license or rights under any 17 * patent, copyright, mask work right, or any other intellectual property rights in 18 * or to any products. NXP Semiconductors reserves the right to make changes 19 * in the software without notification. NXP Semiconductors also makes no 20 * representation or warranty that such application will be suitable for the 21 * specified use without further testing or modification. 22 * 23 * @par 24 * Permission to use, copy, modify, and distribute this software and its 25 * documentation is hereby granted, under NXP Semiconductors' and its 26 * licensor's relevant copyrights in the software, without fee, provided that it 27 * is used in conjunction with NXP Semiconductors microcontrollers. This 28 * copyright, permission, and disclaimer notice must appear in all copies of 29 * this code. 30 */ 31 32/** @defgroup EXAMPLES_PERIPH_15XX_DAC LPC15xx Digital to Analog Converter example 33 * @ingroup EXAMPLES_PERIPH_15XX 34 * <b>Example description</b><br> 35 * The DAC example demonstrates using the Digital to Analog Converter.<br> 36 * 37 * This example uses the DAC to produce a stepped saw tooth waveform at 100Hz. 38 * It uses the internal timer as a trigger source for generating DAC interrupts 39 * The timer is set up to generate interrupts at 2KHz i.e. 20 DAC output samples 40 * for every sawtooth waveform. At the occurrence of the DAC interrupt the DAC input 41 * register is updated with an incremented value and the value is reset after it 42 * crosses the 12bit boundary for DAC input. P0.12 is the set up as the DAC output 43 * By connecting an oscilloscope to P0.12 and ground you will notice a stepped sawtooth 44 * waveform at 100Hz.<br> 45 * 46 * <b>Special connection requirements</b><br> 47 * There are no special connection requirements for this example.<br> 48 * 49 * <b>Build procedures:</b><br> 50 * Visit the <a href="http://www.lpcware.com/content/project/lpcopen-platform-nxp-lpc-microcontrollers/lpcopen-v200-quickstart-guides">LPCOpen quickstart guides</a> 51 * to get started building LPCOpen projects. 52 * 53 * <b>Supported boards and board setup:</b><br> 54 * @ref LPCOPEN_15XX_BOARD_LPCXPRESSO_1549<br> 55 * 56 * <b>Submitting LPCOpen issues:</b><br> 57 * @ref LPCOPEN_COMMUNITY 58 */ 59 60/** 61 * @} 62 */ 63