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 ******************** (C) COPYRIGHT 2010 NXPSemiconductors *******************
 * @file    SPI\Slave\abstract.txt 
 * @author  NXP MCU SW Application Team
 * @version 2.0
 * @date    
 * @brief   Description of the SPI Slave example.
 ******************************************************************************
 * 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 SPI as slave to connect with SPI master
		Note that: this example will run combinate with master example at folder \Master.
		(Pls see "Step to run" part in this file for more information)
	Process:
		SPI configuration:
			- CPHA = 1: data is sampled on the second clock edge of SCK.
			- CPOL = 1: SCK is active low
			- Clock rate = 2MHz
			- LSBF = 0: SPI data is transferred MSB first 
			- BITS = 10: 10 bits per transfer
			- MSTR = 1: SPI operates in Slave mode
		After initialize buffer, SPI slave will wait to receive/send data from/to master in 
		POLLING mode by calling 'SPI_ReadWrite( )' function.
		After transmittion completed, receive and transmit buffer will be compare, if they 
		are not similare, the program will be enter infinite loop and a error notice will
		be displayed.  

@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)
	spi_slave.c: Main program

@How to run:
	Hardware configuration:		
		This example was tested on:
			Keil MCB1700 with LPC1768 vers.1
				These jumpers must be configured as following:
				- VDDIO: ON
				- VDDREGS: ON 
				- VBUS: ON
				- Remain jumpers: OFF
			IAR LPC1768 KickStart vers.A
				These jumpers must be configured as following:
				- PWR_SEL: depend on power source
				- DBG_EN : ON
				- Remain jumpers: OFF
				
		SPI connection:
			- P0.15 - SCK on slave connects to P0.15 - SCK on master board;
	 		- P0.16 - SSEL on slave connects to P0.16 - SSEL on master board (used as GPIO)
	  		- P0.17 - MISO on slave connects to P0.17 - MISO on master board
	  		- P0.18 - MOSI on slave connects to P0.18 - MOSI on master board
			Common ground must be connected together between two board.
	  			
	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.
					
		Note: If want to burn hex file to board by using Flash Magic, these jumpers need
		to be connected:
			- MCB1700 with LPC1768 ver.1:
				+ RST: ON
				+ ISP: ON
			- IAR LPC1768 KickStart vers.A:
				+ RST_E: ON
				+ ISP_E: ON
		
		(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 slave board (if run on ROM mode) 
		- Step 3: Build "Slave\spi_slave" example
		- Step 4: Burn this hex file into master board.
		- Step 5: Connect UART0 on slave board to COM port on your computer
		- Step 6: Configure hardware, connect master board and slave board as above instruction 
		- Step 7: Configure serial display as above instruction
		- Step 8: Run example and observe SPI slave transfer result from serial display
		Note: You have to press '1' on master's serial display to start master transmition first
		
		(Pls see "LPC17xx Example Description" document - chapter "Examples > SPI > Slave"
		 for more details)
		
@Tip:
	- Open \EWARM\*.eww project file to run example on IAR
	- Open \RVMDK\*.uvproj project file to run example on Keil