abstract.h

00001  ******************** (C) COPYRIGHT 2010 NXPSemiconductors *******************
00002  * @file    UART\RS485_master\abstract.txt 
00003  * @author  NXP MCU SW Application Team
00004  * @version 2.0
00005  * @date    
00006  * @brief   Description of the RS485_Master example.
00007  ******************************************************************************
00008  * Software that is described herein is for illustrative purposes only
00009  * which provides customers with programming information regarding the
00010  * products. This software is supplied "AS IS" without any warranties.
00011  * NXP Semiconductors assumes no responsibility or liability for the
00012  * use of the software, conveys no license or title under any patent,
00013  * copyright, or mask work right to the product. NXP Semiconductors
00014  * reserves the right to make changes in the software without
00015  * notification. NXP Semiconductors also make no representation or
00016  * warranty that such application will be suitable for the specified
00017  * use without further testing or modification.
00018  ******************************************************************************
00019   
00020 @Example description:
00021     Purpose:
00022         This example describes how to use RS485 functionality on UART1 of LPC1768
00023         in master mode.
00024     Process:    
00025         RS485 function on UART1 acts as Master mode on RS485 bus.
00026         Master device will send a specified slave device address value
00027         first, then master device will send data frames. After sending
00028         completed, master device wait for response from slave device (example RS485_slave).
00029         
00030 @Directory contents:
00031     \EWARM: includes EWARM (IAR) project and configuration files
00032     \Keil:  includes RVMDK (Keil)project and configuration files 
00033     
00034     lpc17xx_libcfg.h: Library configuration file - include needed driver library for this example 
00035     makefile: Example's makefile (to build with GNU toolchain)
00036     rs485_master.c: Main program
00037 
00038 @How to run:
00039     Hardware configuration:     
00040         This example was tested on:
00041             Keil MCB1700 with LPC1768 vers.1
00042                 These jumpers must be configured as following:
00043                 - VDDIO: ON
00044                 - VDDREGS: ON 
00045                 - VBUS: ON
00046                 - Remain jumpers: OFF
00047             IAR LPC1768 KickStart vers.A
00048                 These jumpers must be configured as following:
00049                 - PWR_SEL: depend on power source
00050                 - DBG_EN : ON
00051                 - Remain jumpers: OFF
00052                 
00053         RS485 Connection:
00054         Pls see the 'Transceiver_Master.png' in this directory for wiring information.          
00055                 
00056     
00057     Running mode:
00058         This example can run on RAM/ROM mode.
00059                     
00060         Note: If want to burn hex file to board by using Flash Magic, these jumpers need
00061         to be connected:
00062             - MCB1700 with LPC1768 ver.1:
00063                 + RST: ON
00064                 + ISP: ON
00065             - IAR LPC1768 KickStart vers.A:
00066                 + RST_E: ON
00067                 + ISP_E: ON
00068         
00069         (Please reference "LPC1000 Software Development Toolchain" - chapter 4 "Creating and working with
00070         LPC1000CMSIS project" for more information)
00071     
00072     Step to run:
00073         - Step 1: Build example.
00074         - Step 2: Burn hex file into board (if run on ROM mode)
00075         - Step 3: Connect UART0 on this board to COM port on your computer
00076         - Step 4: Connect RS485 as above instruction (using ADM485)
00077         - Step 5: Run example and using Serial display to monitor the communication between master and slave.
00078         
00079         (Pls see "LPC17xx Example Description" document - chapter "Examples > UART > RS485_Master"
00080         for more details)
00081         
00082 @Tip:
00083     - Open \EWARM\*.eww project file to run example on IAR
00084     - Open \RVMDK\*.uvproj project file to run example on Keil