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PWM 的代码
pwm之小车调速.c
#include < reg51.h >
#include < intrins.h >
sbit K1 =P2^0 ; //按K1，PWM值增加键
sbit K2 =P2^1 ; //按K2，PWM值减少键
sbit K3 =P2^2 ; //按K2，正反转
u
pwm之小车调速.uv2
### uVision2 Project, (C) Keil Software
### Do not modify !
Target (Target 1), 0x0000 // Tools: 'MCS-51'
Group (Source Group 1)
File 1,1, 0x0
Options 1,0,0 /
pwm之小车调速.plg
礦ision3 Build Log
Project:
D:\程序\keil\智能小车\PWM之小车调速\PWM之小车调速.uv2
Project File Date: 08/14/2008
Output:
pwm.c
#include
void ccp1init(void)
{
CCPR1L=0XFF;//PWM频宽为:(CCPR1LCCP1CON)*Tosc*预分频数
CCP1CON=0X0C;//PWM模式CCP1CON为00,则PWM为8位
PR2=0XFF;//0.32mS--PWM的周期,T=(PR2+1)*(4/fosc)*预分
key-control-pwm-led.uv2
### uVision2 Project, (C) Keil Software
### Do not modify !
Target (Target 1), 0x0000 // Tools: 'MCS-51'
Group (Source Group 1)
File 1,1, 0x0
key-control-pwm-led.lnp
"KEY-CONTROL-PWM-LED.obj"
TO "KEY-CONTROL-PWM-LED"
key-control-pwm-led.c
/*******************************************************************/
/* */
/* ME500单片机开发系统演示程序 - PWM控制LED灯渐亮渐灭 */
/*
key-control-pwm-led.plg
礦ision2 Build Log
Project:
F:\ME500单片机开发系统\基础练习\PWM\PWM 控制 LED 灯渐亮渐灭程序\C51\KEY-CONTROL-PWM-LED.uv2
Project File Date: 11/20/2006
Output:
Build
pwm.h
#ifndef PWM_H
#define PWM_H
void pwm(ulong voltage);
void pwm_phase(ulong frequency,ulong voltage);
#endif
pwm.lst
A51 MACRO ASSEMBLER PWM 02/16/2009 13:58:31 PAGE 1
MACRO ASSEMBLER A51 V6.12
OBJECT MODULE PLACED IN .\PWM.OBJ
ASSEMBLER IN