STM8S/A Standard Peripherals Firmware Library: main.c Source File

00001 /**
00002   ******************************************************************************
00003   * @file    TIM2_PWM_DutyCycleConfiguration\main.c
00004   * @author  MCD Application Team
00005   * @version  V2.2.0
00006   * @date     30-September-2014
00007   * @brief   This file contains the main function for TIM2 PWM_DutyCycleConfiguration
00008   *          example.
00009   ******************************************************************************
00010   * @attention
00011   *
00012   * <h2><center>&copy; COPYRIGHT 2014 STMicroelectronics</center></h2>
00013   *
00014   * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
00015   * You may not use this file except in compliance with the License.
00016   * You may obtain a copy of the License at:
00017   *
00018   *        http://www.st.com/software_license_agreement_liberty_v2
00019   *
00020   * Unless required by applicable law or agreed to in writing, software 
00021   * distributed under the License is distributed on an "AS IS" BASIS, 
00022   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00023   * See the License for the specific language governing permissions and
00024   * limitations under the License.
00025   *
00026   ******************************************************************************
00027   */ 
00028 
00029 /* Includes ------------------------------------------------------------------*/
00030 #include "stm8s.h"
00031 
00032 /**
00033   * @addtogroup TIM2_PWM_DutyCycleConfiguration
00034   * @{
00035   */
00036 
00037 /* Private typedef -----------------------------------------------------------*/
00038 /* Private define ------------------------------------------------------------*/
00039 /* Private macro -------------------------------------------------------------*/
00040 /* Private variables ---------------------------------------------------------*/
00041 uint16_t CCR1_Val = 500;
00042 uint16_t CCR2_Val = 250;
00043 uint16_t CCR3_Val = 125;
00044 
00045 /* Private function prototypes -----------------------------------------------*/
00046 static void TIM2_Config(void);
00047 /* Private functions ---------------------------------------------------------*/
00048 /* Public functions ----------------------------------------------------------*/
00049 
00050 /**
00051   * @brief  Main program.
00052   * @param  None
00053   * @retval None
00054   */
00055 void main(void)
00056 {
00057   /* TIM2 configuration -----------------------------------------*/
00058   TIM2_Config();  
00059   
00060   while (1)
00061   {}
00062 }
00063 
00064 /**
00065   * @brief  Configure TIM2 peripheral in PWM mode
00066   * @param  None
00067   * @retval None
00068   */
00069 static void TIM2_Config(void)
00070 {
00071   /* Time base configuration */
00072   TIM2_TimeBaseInit(TIM2_PRESCALER_1, 999);
00073 
00074   /* PWM1 Mode configuration: Channel1 */ 
00075   TIM2_OC1Init(TIM2_OCMODE_PWM1, TIM2_OUTPUTSTATE_ENABLE,CCR1_Val, TIM2_OCPOLARITY_HIGH);
00076   TIM2_OC1PreloadConfig(ENABLE);
00077 
00078   /* PWM1 Mode configuration: Channel2 */ 
00079   TIM2_OC2Init(TIM2_OCMODE_PWM1, TIM2_OUTPUTSTATE_ENABLE,CCR2_Val, TIM2_OCPOLARITY_HIGH);
00080   TIM2_OC2PreloadConfig(ENABLE);
00081 
00082   /* PWM1 Mode configuration: Channel3 */         
00083   TIM2_OC3Init(TIM2_OCMODE_PWM1, TIM2_OUTPUTSTATE_ENABLE,CCR3_Val, TIM2_OCPOLARITY_HIGH);
00084   TIM2_OC3PreloadConfig(ENABLE);
00085 
00086   TIM2_ARRPreloadConfig(ENABLE);
00087 
00088   /* TIM2 enable counter */
00089   TIM2_Cmd(ENABLE);
00090 }
00091 
00092 #ifdef USE_FULL_ASSERT
00093 
00094 /**
00095   * @brief  Reports the name of the source file and the source line number
00096   *   where the assert_param error has occurred.
00097   * @param file: pointer to the source file name
00098   * @param line: assert_param error line source number
00099   * @retval None
00100   */
00101 void assert_failed(uint8_t* file, uint32_t line)
00102 { 
00103   /* User can add his own implementation to report the file name and line number,
00104      ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
00105 
00106   /* Infinite loop */
00107   while (1)
00108   {
00109   }
00110 }
00111 #endif
00112 
00113 /**
00114   * @}
00115   */
00116 
00117 
00118 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/