[技术文档] HK32F030M PWM

/**

  ******************************************************************************

  * [url=home.php?mod=space&uid=288409]@file[/url]           : main.c

  * [url=home.php?mod=space&uid=247401]@brief[/url]          : Main program body

  ******************************************************************************

  * @attention

  *

  */



/* Includes ------------------------------------------------------------------*/

#include "main.h"

#include "hk32f030m.h"

#include "hk32f030m_gpio.h"

#include <stdio.h>

#include "stdarg.h"



uint16_t PrescalerValue = 0;



void RCC_Configuration(void);

void GPIO_Configuration(void);

void TIM_Config(void);

int main(void)

  /* Infinite loop */

{

    RCC_Configuration();

    GPIO_Configuration();

    TIM_Config();    

  while (1)

  {

  }

}

/*时钟配置*/

void RCC_Configuration(void)

{

    RCC_AHBPeriphClockCmd( RCC_AHBPeriph_GPIOA, ENABLE );

    RCC_AHBPeriphClockCmd( RCC_AHBPeriph_GPIOB, ENABLE );

    RCC_AHBPeriphClockCmd( RCC_AHBPeriph_GPIOC, ENABLE );

    RCC_AHBPeriphClockCmd( RCC_AHBPeriph_GPIOD, ENABLE );

    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);

}

/*GPIO配置*/

void GPIO_Configuration(void)

{

    GPIO_InitTypeDef GPIO_InitStructure;



  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;

    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

    GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;

    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;

    /*PD4 = TIM2 Channel 1*/

    //GPIOD Configuration: Channel 1

    /*

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;

  GPIO_Init(GPIOD, &GPIO_InitStructure);

    GPIO_PinAFConfig(GPIOD,GPIO_PinSource4,GPIO_AF_4);

    */

    /*PD3 = TIM2 Channel 2*/

    //GPIOD Configuration: Channel 2

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;

    GPIO_Init(GPIOD, &GPIO_InitStructure);

    GPIO_PinAFConfig(GPIOD,GPIO_PinSource3,GPIO_AF_4);



       /*PC3 = TIM2 Channel 1*/ 

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;

    GPIO_Init(GPIOC, &GPIO_InitStructure);

    GPIO_PinAFConfig(GPIOC,GPIO_PinSource3,GPIO_AF_4);

    

        //PA3，IO翻转输出

    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;

  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;

    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;

  GPIO_Init(GPIOA, &GPIO_InitStructure);

}

/*TIMER配置*/

void TIM_Config(void)

{

    TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;

    NVIC_InitTypeDef NVIC_InitStructure;

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

    TIM2 Configuration: Encoder mode1:

    

    In this example TIM2 input clock (TIM2CLK) is set to APB1 clock (PCLK1).

      TIM2CLK = PCLK1  

      PCLK1 = HCLK

      => TIM2CLK = HCLK = SystemCoreClock

          

    To get TIM2 counter clock at 32 MHz, the prescaler is computed as follows:

       Prescaler = (TIM2CLK / TIM2 counter clock) - 1

       Prescaler = ((SystemCoreClock) /32 MHz) - 1



   TIM2 is configured to interface with an encoder:

   - The encoder mode is encoder mode1: Counter counts up/down on TI2 rising edge 

   depending on TI1 level 



   - The Autoreload value is set to 10, so the encoder round is 10 TIM counter clock.  

                                              



    Note: 

     SystemCoreClock variable holds HCLK frequency and is defined in system_stm32f0xx.c file.

     Each time the core clock (HCLK) changes, user had to call SystemCoreClockUpdate()

     function to update SystemCoreClock variable value. Otherwise, any configuration

     based on this variable will be incorrect.    

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

  /* Compute the prescaler value */

 // PrescalerValue = (uint16_t) ((SystemCoreClock ) / 32000000) - 1;//配置频率为32M

  PrescalerValue = 32-1; /* 和下面设置预分频一样 */

  /* Time base configuration */

  TIM_TimeBaseStructure.TIM_Period = 8-1  ;    /* 自动重装 数值*/

  TIM_TimeBaseStructure.TIM_Prescaler = 0;  /* 预分频 */

  TIM_TimeBaseStructure.TIM_ClockDivision = 0;  /* 不分频 */

  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;



  TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);



  /* Prescaler configuration */

  /* 先配好ARR ，再设置预分频,PSC有预重装功能只能等更新事件来弄，不像ARR CRR立即更新重载 */

  TIM_PrescalerConfig(TIM2, PrescalerValue, TIM_PSCReloadMode_Immediate);//每次UPdate重新初始化计数器

    /*选择编码器模式1，根据TIFP1的电平，计数器在TI2FP2的边沿上下计数*/

//  TIM_EncoderInterfaceConfig(TIM2, TIM_EncoderMode_TI1, TIM_ICPolarity_Rising, TIM_ICPolarity_Rising);

   

  /* TIM Interrupts enable */

  TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);



  /* TIM3 enable counter */

  TIM_Cmd(TIM2, ENABLE);

  

  /* Enable the TIM2 gloabal Interrupt */

  NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;

  NVIC_InitStructure.NVIC_IRQChannelPriority = 0;

  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

  NVIC_Init(&NVIC_InitStructure);

  

  

  

  

  

    TIM_OCInitTypeDef TIM_OCInitStructure;

  

    /* 频道1，2，3，4的PWM 模式设置 */

    

    /* PWM1 Mode configuration: Channel1 */  

    TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;                           //PWM模式



    

    TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;

    TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;

    TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;

    TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;

    TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;

    TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;



   // TIM_OCInitStructure.TIM_Pulse = 500;//使能频道1配置

   // TIM_OC1Init(TIM1, &TIM_OCInitStructure);

    

    /* 通道1 */

    TIM_OCInitStructure.TIM_Pulse = 4;//使能频道2配置

    TIM_OC1Init(TIM2, &TIM_OCInitStructure);

    

    /* 通道2 */

    TIM_OCInitStructure.TIM_Pulse = 4;//使能频道2配置

    TIM_OC2Init(TIM2, &TIM_OCInitStructure);



    

    /* TIM1 主输出使能 */

    TIM_CtrlPWMOutputs(TIM2, ENABLE);

  

  

  

}

/*配置IO翻转*/

void GPIO_TogglePin(GPIO_TypeDef *GPIOx, uint16_t GPIO_Pin)

{

  /* Check the parameters */

  assert_param(IS_GPIO_PIN(GPIO_Pin));



  GPIOx->ODR ^= GPIO_Pin;

}

#ifdef  USE_FULL_ASSERT

/**

  * @brief  Reports the name of the source file and the source line number

  *         where the assert_param error has occurred.

  * @param  file: pointer to the source file name

  * @param  line: assert_param error line source number

  * @retval None

  */

void assert_failed(uint8_t* file, uint32_t line)

{

  /* User can add his own implementation to report the file name and line number,

     tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */

}

#endif /* USE_FULL_ASSERT */