/********************************************************************** * $Id$ abstract.txt *//** * @file abstract.txt * @brief Example description file * @version 2.0 * @date * @author NXP MCU SW Application Team/Micromint USA Support * * Copyright(C) 2010, NXP Semiconductor * All rights reserved. * *********************************************************************** * Software that is described herein is for illustrative purposes only * which provides customers with programming information regarding the * products. This software is supplied "AS IS" without any warranties. * NXP Semiconductors assumes no responsibility or liability for the * use of the software, conveys no license or title under any patent, * copyright, or mask work right to the product. NXP Semiconductors * reserves the right to make changes in the software without * notification. NXP Semiconductors also make no representation or * warranty that such application will be suitable for the specified * use without further testing or modification. **********************************************************************/ @Example description: Purpose: This example describes how to use ADC conversion in burst mode with multiple input. This example also describes how to inject an ADC conversion channel while the others are running. Process: Analog voltages need to be applied to AD0.2 (J7 pin 5) and AD0.3 (J7 pin 7) on the Lincoln. The ADC conversion rate is 200KHz. A fully accurate conversion requires 65 of these clocks. So ADC clock = 200KHz * 65 = 13MHz. Note that maximum ADC clock input is 13MHz. Burst ADC will repeatedly sample-convert the voltage on AD0.x pins then update the channel data registers. So we just need to read the ADC channel data registers and display the value via UART0. Only in burst mode, ADC can sample multiple channels, then we can inject by configuring this mode. This example uses the Lincoln's User Button to trigger the injection, and uses LED1 (green LED) to indicate that an ADC channel has just been injected or removed. @Directory contents: \EWARM: includes EWARM (IAR) project and configuration files \Keil: includes RVMDK (Keil)project and configuration files lpc17xx_libcfg.h: Library configuration file - include needed driver library for this example makefile: Example's makefile (to build with GNU toolchain) adc_burst_test.c: Main program @How to run: Serial display configuration: (e.g: TeraTerm, Hyperterminal, Flash Magic...) – 115200bps – 8 data bit – No parity – 1 stop bit – No flow control Running mode: This example can run on RAM/ROM mode. (Please reference "LPC1000 Software Development Toolchain" - chapter 4 "Creating and working with LPC1000CMSIS project" for more information) Step to run: - Step 1: Build example. - Step 2: Burn hex file into board (if run on ROM mode) - Step 3: Connect COM1 on the Lincoln board to COM port on your computer - Step 4: Configure hardware and serial display as above instruction - Step 5: Run example, adjust the analog voltages and observe data on serial display @Tip: - Open \EWARM\*.eww project file to run example on IAR - Open \RVMDK\*.uvproj project file to run example on Keil