/********************************************************************** * $Id$ 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 test GPDMA operation in sleep mode Process: GPDMA perpiheral in LPC17xx can operate in Sleep mode. Note that: in Sleep mode, the GPDMA can not access the flash memory. At first, source and destinate buffers were initialized. After that, GPDMA channel 0 is initialized as follows: + Channel: 0 + Transfer size: 0x100 + Source address: DMA_SRC = LPC_AHBRAM1_BASE = 0x20080000 + Destination address: DMA_DST = DMA_SRC+DMA_SIZE = 0x20080100 + Transfer width = WORD + Transfer type: M2M (memory-to-memory) + No use link list After enable GPDMA interrupt, call "CLKPWR_Sleep()" function for entering system in sleep mode. GPDMA will transfer 2 block of data from memory boundary to the other memory boundary on RAM by using interrupt mode in sleep mode. After transferring completed, "Buffer_Verify()" will be called to compare data block in memory source and destination. If not similar, program will enter infinite loop. Open serial display to observe DMA transfer process. @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) gpdma_sleep.c: Main program @How to run: Hardware configuration: 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. 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 and observe on serial display @Tip: - Open \EWARM\*.eww project file to run example on IAR - Open \RVMDK\*.uvproj project file to run example on Keil