These are the examples provided for [[/users/frank26080115/libraries/LPC1700CMSIS_Lib/]] Note, the entire "program" is not compilable!
Diff: PWM/Dual_Edge/abstract.h
- Revision:
- 0:bf7b9fba3924
diff -r 000000000000 -r bf7b9fba3924 PWM/Dual_Edge/abstract.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/PWM/Dual_Edge/abstract.h Sun Mar 20 05:38:56 2011 +0000 @@ -0,0 +1,100 @@ + ******************** (C) COPYRIGHT 2010 NXPSemiconductors ******************* + * @file PWM\Dual_Edge\abstract.txt + * @author NXP MCU SW Application Team + * @version 2.0 + * @date + * @brief Description of the PWM Dual_Edge 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 generate PWM signal on 3 Channels in both + edge mode and single mode. + Process: + This program illustrates the PWM signal on 3 Channels in both edge mode + and single mode. + Peripheral clock for PWM: PWM_PCLK = CCLK / 4 = 72MHz/4 = 18MHz and there is no + prescale for PWM. The PWM timer/counter clock is at 18MHz. The base rate is set to 100 + The base PWM frequency is at 18MHz/100 = 180 KHz. + Each PWM channel will be configured as following: + - Channel 2: Double Edge (P2.1) + - Channel 4: Double Edge (P2.5) + - Channel 5: Single Edge (P2.6) + The Match register values are as follows: + - MR0 = 100 (PWM rate) + - MR1 = 41, MR2 = 78 (PWM2 output) + - MR3 = 53, MR4 = 27 (PWM4 output) + - MR5 = 65 (PWM5 output) + PWM Duty on each PWM channel: + - Channel 2: Set by match 1, Reset by match 2. + - Channel 4: Set by match 3, Reset by match 4. + - Channel 5: Set by match 0, Reset by match 5. + Using Oscilloscope to observe the PWM signals + +@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) + pwm_dual_edge.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 + + PWM Pin selected: + Observe PWM wave signal on these pin + - PWM1.2 (channel 2): P2.1 + - PWM1.4 (channel 4): P2.3 + - PWM1.5 (channel 5): P2.4 + + 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, Use oscilloscope to monitor the wave form + + (Pls see "LPC17xx Example Description" document - chapter "Examples > PWM > Dual_Edge" + for more details) + +@Tip: + - Open \EWARM\*.eww project file to run example on IAR + - Open \RVMDK\*.uvproj project file to run example on Keil