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PWM 的代码
pwm.c
//*****************************************************************************
//
// pwm.c - API for the PWM modules
//
// Copyright (c) 2005,2006 Luminary Micro, Inc. All rights reserved.
//
pwm.h
//[PWM.h]脉宽调制头文件-----------------------------------------------------
//脉宽调制需要用到的头文件
#include //MCU映像寄存器名
#include "Type.h"
//脉宽调制相关函数声明
//PWM初始化函数声明
void PWMInit(INT8U
pwm.c
//[PWM.c]脉宽调制----------------------------------------------------------*
//本文件包含: *
// (1)PWMInit:PWM初始化
pwm.__i
"pwm.c" BROWSE DEBUG OBJECTEXTEND
pwm.txt
;本例通过编程,在pic单片机pf18f485的控制下使CCP1模块工作在脉宽调制<mark>PWM</mark>波形方式下从RC2口上输出分辨率达10位的
;<mark>PWM</mark>波形,波形的占空比可以通过键盘调节,当按下K1键时,输出的<mark>PWM</mark>波形的占空比为25%,
;当按下K2键时,输出的<mark>PWM</mark>波形的占空比为50%,当按下K3键时,输出的<mark>PWM</mark>波形的占空
;比为75%,当按下K4键时,输出的<mark>PWM</mark>波形的占空比为100% , ...
pwm.c
//---------------------------------------------------------------------
// File: pwm.c
//
// Written By: Lawrence Glaister
//
// Purpose: This set of routines to run pwn output
//
//
//
pwm.lst
C51 COMPILER V6.12 PWM 04/13/2009 18:38:19 PAGE 1
C51 COMPILER V6.12, COMPILATION OF MODULE PWM
OBJECT MODULE PLACED IN .\P
pwm.m51
BL51 BANKED LINKER/LOCATER V4.13 04/13/2009 18:38:19 PAGE 1
BL51 BANKED LINKER/LOCATER V4.13, INVOKED BY:
J:\KEIL\C51\BIN\BL51.EXE PWM.ob
pwm.uv2
### uVision2 Project, (C) Keil Software
### Do not modify !
Target (Target 1), 0x0000 // Tools: 'MCS-51'
Group (Source Group 1)
File 1,1,
Options 1,0,0 // Target 'Targe
pwm.plg
Build target 'Target 1'
compiling PWM.C...
.\PWM.C(17): error C202: 'counter': undefined identifier
.\PWM.C(20): error C202: 'counter': undefined identifier
Target not created
Build target 'Target 1'