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Diffstat (limited to 'tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/TIM10_PWMOutput/main.c')
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1 files changed, 156 insertions, 0 deletions
diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/TIM10_PWMOutput/main.c b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/TIM10_PWMOutput/main.c new file mode 100644 index 0000000..4647dfb --- /dev/null +++ b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/TIM10_PWMOutput/main.c @@ -0,0 +1,156 @@ +/** + ****************************************************************************** + * @file TIM/TIM10_PWMOutput/main.c + * @author MCD Application Team + * @version V3.5.0 + * @date 08-April-2011 + * @brief Main program body + ****************************************************************************** + * @attention + * + * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS + * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE + * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY + * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING + * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE + * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. + * + * <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2> + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f10x.h" + +/** @addtogroup STM32F10x_StdPeriph_Examples + * @{ + */ + +/** @addtogroup TIM10_PWMOutput + * @{ + */ + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; +TIM_OCInitTypeDef TIM_OCInitStructure; +uint16_t CCR1Val = 249; +uint16_t PrescalerValue = 0; + +/* Private function prototypes -----------------------------------------------*/ +void RCC_Configuration(void); +void GPIO_Configuration(void); + +/* Private functions ---------------------------------------------------------*/ + +/** + * @brief Main program + * @param None + * @retval None + */ +int main(void) +{ + /*!< At this stage the microcontroller clock setting is already configured, + this is done through SystemInit() function which is called from startup + file (startup_stm32f10x_xx.s) before to branch to application main. + To reconfigure the default setting of SystemInit() function, refer to + system_stm32f10x.c file + */ + + /* GPIO Configuration */ + GPIO_Configuration(); + + /* ----------------------------------------------------------------------- + TIM10 Configuration: generate 1 PWM signal. + The TIM10CLK frequency is set to SystemCoreClock (72 MHz), to get TIM10 counter + clock at 24 MHz the Prescaler is computed as following: + - Prescaler = (TIM10CLK / TIM10 counter clock) - 1 + + The TIM10 is running at 36 KHz: TIM10 Frequency = TIM10 counter clock/(ARR + 1) + = 24 MHz / 666 = 36 KHz + TIM10 Channel1 duty cycle = (TIM10_CCR1/ TIM10_ARR)* 100 = 37.5% + ----------------------------------------------------------------------- */ + /* Compute the prescaler value */ + PrescalerValue = (uint16_t) (SystemCoreClock / 24000000) - 1; + /* Time base configuration */ + TIM_TimeBaseStructure.TIM_Period = 665; + TIM_TimeBaseStructure.TIM_Prescaler = PrescalerValue; + TIM_TimeBaseStructure.TIM_ClockDivision = 0; + TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; + + TIM_TimeBaseInit(TIM10, &TIM_TimeBaseStructure); + + /* PWM1 Mode configuration: Channel1 */ + TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; + TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; + TIM_OCInitStructure.TIM_Pulse = CCR1Val; + TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; + + TIM_OC1Init(TIM10, &TIM_OCInitStructure); + + TIM_OC1PreloadConfig(TIM10, TIM_OCPreload_Enable); + + TIM_ARRPreloadConfig(TIM10, ENABLE); + + /* TIM10 enable counter */ + TIM_Cmd(TIM10, ENABLE); + + while (1) + {} +} + +/** + * @brief Configure TIM10 pin. + * @param None + * @retval None + */ +void GPIO_Configuration(void) +{ + GPIO_InitTypeDef GPIO_InitStructure; + + /* Enable TIM10 and GPIOF clock */ + RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM10 | RCC_APB2Periph_GPIOF | + RCC_APB2Periph_AFIO, ENABLE); + + /* Remap TIM10_CH1 on PF6 pin */ + GPIO_PinRemapConfig(GPIO_Remap_TIM10, ENABLE); + + /* GPIOF Configuration: TIM10 Channel1 as alternate function push-pull */ + GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; + GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; + + GPIO_Init(GPIOF, &GPIO_InitStructure); +} + +#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) */ + + while (1) + {} +} + +#endif + +/** + * @} + */ + +/** + * @} + */ + +/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/ |