These are the examples provided for [[/users/frank26080115/libraries/LPC1700CMSIS_Lib/]] Note, the entire "program" is not compilable!
SysTick/STCLK/abstract.h
- Committer:
- frank26080115
- Date:
- 2011-03-20
- Revision:
- 0:bf7b9fba3924
File content as of revision 0:bf7b9fba3924:
******************** (C) COPYRIGHT 2010 NXPSemiconductors ******************* * @file SysTick\STCLK\abstract.txt * @author NXP MCU SW Application Team * @version 2.0 * @date * @brief Description of the SysTick STCLK 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 configure System Tick timer use external clock source STCLK Process: In this example, System Tick timer is clocked by external clock STCLK STCLK supplied by MAT0.0 (P1.28) that generated by timer match channel 0 STCLK frequency = 50kHz Setting time interval = 10ms. After each 10ms, System Tick will generate interrupt, interrupt service routine 'SysTick_Handler( )' will be invoke and toggle P0.0 pin. Use oscilloscope to observe signal on P0.0 and measure time between falling and rising edge, it would be: 10ms. @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) systick_stclk.c: Main program @How to run: Hardware configuration: This example was tested only 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 STCLK connection: - STCLK(P3.26) connects with MAT0.0(P1.28) 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 board (if run on ROM mode) - Step 3: Configure hardware as above instruction - Step 4: Run example, observe System Tick operation via P0.0 signal (Pls see "LPC17xx Example Description" document - chapter "Examples > SysTick > STCLK" for more details) @Tip: - Open \EWARM\*.eww project file to run example on IAR - Open \RVMDK\*.uvproj project file to run example on Keil