（好心情）NUC120第六帖--PWM

只看该作者 · 2011-10-4 17:06

废话不多说，直接上代码

/*---------------------------------------------------------------------------------------------------------*/

/* */

/* Copyright(c) 2009 Nuvoton Technology Corp. All rights reserved. */

/* */

/*---------------------------------------------------------------------------------------------------------*/

#include <stdio.h>

#include "NUC1xx.h"

#include "Driver\DrvGPIO.h"

#include "Driver\DrvSYS.h"

#include "DrvPWM.H"

#define LED_PWM_VAL PWMA->CMR0 //通过比较器调节占空比



int main(void)

{

uint16_t ledpwmval=0;

S_DRVPWM_TIME_DATA_T spt;



DrvPWM_Open();

DrvGPIO_InitFunction(E_FUNC_PWM0); // 设置GPA12（即PWM0）为PWM输出

DrvPWM_SelectClockSource(DRVPWM_TIMER0,DRVPWM_HCLK); //为PWM0，PWM1选择时钟源 DRVPWM_HCLK



spt.u8Mode = DRVPWM_AUTO_RELOAD_MODE; //自动装载模式

spt.u8HighPulseRatio = 1; //占空比

spt.u32Frequency = 1000;

//spt.u8ClockSelector = DRVPWM_CLOCK_DIV_1; //时钟分频 u32Frequency =0 时生效

//spt.u8PreScale = 0; //8位预分频0-255 u32Frequency =0时生效

//spt.u32Duty = 0; //u32Frequency = 0,或工作在捕获模式时有效

spt.i32Inverter = 1;



DrvPWM_SetTimerClk(DRVPWM_TIMER0,&spt);

DrvPWM_SetTimerIO(DRVPWM_TIMER0,ENABLE); //使能IO输出

DrvPWM_Enable(DRVPWM_TIMER0,ENABLE); //使能PWM0



//DrvPWM_SetTimerCounter()







//LED_PWM_VAL = 1;



while (1)

{



DrvSYS_Delay(10000);

ledpwmval ++ ;

if (ledpwmval >= 11000)

{

ledpwmval = 1;

}

LED_PWM_VAL = ledpwmval;

};

}