STM8S_StdPeriph_Examples/TIM2/TIM2_PWM_DutyCycleConfiguration/main.c

Go to the documentation of this file.

/**
  ******************************************************************************
  * @file    TIM2_PWM_DutyCycleConfiguration\main.c
  * @author  MCD Application Team
  * @version  V2.2.0
  * @date     30-September-2014
  * @brief   This file contains the main function for TIM2 PWM_DutyCycleConfiguration
  *          example.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT 2014 STMicroelectronics</center></h2>
  *
  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
  * You may not use this file except in compliance with the License.
  * You may obtain a copy of the License at:
  *
  *        http://www.st.com/software_license_agreement_liberty_v2
  *
  * Unless required by applicable law or agreed to in writing, software 
  * distributed under the License is distributed on an "AS IS" BASIS, 
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  *
  ******************************************************************************
  */ 

/* Includes ------------------------------------------------------------------*/
#include "stm8s.h"

/**
  * @addtogroup TIM2_PWM_DutyCycleConfiguration
  * @{
  */

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
uint16_t CCR1_Val = 500;
uint16_t CCR2_Val = 250;
uint16_t CCR3_Val = 125;

/* Private function prototypes -----------------------------------------------*/
static void TIM2_Config(void);
/* Private functions ---------------------------------------------------------*/
/* Public functions ----------------------------------------------------------*/

/**
  * @brief  Main program.
  * @param  None
  * @retval None
  */
void main(void)
{
  /* TIM2 configuration -----------------------------------------*/
  TIM2_Config();  
  
  while (1)
  {}
}

/**
  * @brief  Configure TIM2 peripheral in PWM mode
  * @param  None
  * @retval None
  */
static void TIM2_Config(void)
{
  /* Time base configuration */
  TIM2_TimeBaseInit(TIM2_PRESCALER_1, 999);

  /* PWM1 Mode configuration: Channel1 */ 
  TIM2_OC1Init(TIM2_OCMODE_PWM1, TIM2_OUTPUTSTATE_ENABLE,CCR1_Val, TIM2_OCPOLARITY_HIGH);
  TIM2_OC1PreloadConfig(ENABLE);

  /* PWM1 Mode configuration: Channel2 */ 
  TIM2_OC2Init(TIM2_OCMODE_PWM1, TIM2_OUTPUTSTATE_ENABLE,CCR2_Val, TIM2_OCPOLARITY_HIGH);
  TIM2_OC2PreloadConfig(ENABLE);

  /* PWM1 Mode configuration: Channel3 */         
  TIM2_OC3Init(TIM2_OCMODE_PWM1, TIM2_OUTPUTSTATE_ENABLE,CCR3_Val, TIM2_OCPOLARITY_HIGH);
  TIM2_OC3PreloadConfig(ENABLE);

  TIM2_ARRPreloadConfig(ENABLE);

  /* TIM2 enable counter */
  TIM2_Cmd(ENABLE);
}

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

  /* Infinite loop */
  while (1)
  {
  }
}
#endif

/**
  * @}
  */


/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/