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北京建设教育协会官方网站,建设安全监督站的网站,直通车关键词怎么优化,做网站需要招聘内容范本定时器结构体TIM_TimeBaseInitTypeDef;定时的基本应用TIM_OCInitTypeDef;比较输出#xff0c;compare-用于pwm#xff0c;初始化调用该结构体TIM_ICInitTypeDef;输入捕获#xff0c;用于测量脉冲宽度在此路径下可查看timebase的应用实例D:\STM32开发用资料\STM32官方固件…定时器结构体TIM_TimeBaseInitTypeDef;定时的基本应用TIM_OCInitTypeDef;比较输出compare-用于pwm初始化调用该结构体TIM_ICInitTypeDef;输入捕获用于测量脉冲宽度在此路径下可查看timebase的应用实例D:\STM32开发用资料\STM32官方固件库\STM32F10x_StdPeriph_Lib_V3.5.0\STM32F10x_StdPeriph_Lib_V3.5.0\Project\STM32F10x_StdPeriph_Examples\TIM\TimeBase/** ****************************************************************************** * file TIM/TimeBase/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. * * h2centercopy; COPYRIGHT 2011 STMicroelectronics/center/h2 ****************************************************************************** */ /* Includes ------------------------------------------------------------------*/ #include stm32f10x.h /** addtogroup STM32F10x_StdPeriph_Examples * { */ /** addtogroup TIM_TimeBase * { */ /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /* Private macro -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_OCInitTypeDef TIM_OCInitStructure; __IO uint16_t CCR1_Val 40961; __IO uint16_t CCR2_Val 27309; __IO uint16_t CCR3_Val 13654; __IO uint16_t CCR4_Val 6826; uint16_t PrescalerValue 0; /* Private function prototypes -----------------------------------------------*/ void RCC_Configuration(void); void GPIO_Configuration(void); void NVIC_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 */ /* System Clocks Configuration */ RCC_Configuration(); /* NVIC Configuration */ NVIC_Configuration(); /* GPIO Configuration */ GPIO_Configuration(); /* --------------------------------------------------------------- TIM2 Configuration: Output Compare Timing Mode: TIM2 counter clock at 6 MHz CC1 update rate TIM2 counter clock / CCR1_Val 146.48 Hz CC2 update rate TIM2 counter clock / CCR2_Val 219.7 Hz CC3 update rate TIM2 counter clock / CCR3_Val 439.4 Hz CC4 update rate TIM2 counter clock / CCR4_Val 878.9 Hz --------------------------------------------------------------- */ /* Compute the prescaler value */ PrescalerValue (uint16_t) (SystemCoreClock / 12000000) - 1; /* Time base configuration */ TIM_TimeBaseStructure.TIM_Period 65535; TIM_TimeBaseStructure.TIM_Prescaler 0; TIM_TimeBaseStructure.TIM_ClockDivision 0; TIM_TimeBaseStructure.TIM_CounterMode TIM_CounterMode_Up; TIM_TimeBaseInit(TIM2, TIM_TimeBaseStructure); /* Prescaler configuration */ TIM_PrescalerConfig(TIM2, PrescalerValue, TIM_PSCReloadMode_Immediate); /* Output Compare Timing Mode configuration: Channel1 */ TIM_OCInitStructure.TIM_OCMode TIM_OCMode_Timing; TIM_OCInitStructure.TIM_OutputState TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse CCR1_Val; TIM_OCInitStructure.TIM_OCPolarity TIM_OCPolarity_High; TIM_OC1Init(TIM2, TIM_OCInitStructure); TIM_OC1PreloadConfig(TIM2, TIM_OCPreload_Disable); /* Output Compare Timing Mode configuration: Channel2 */ TIM_OCInitStructure.TIM_OutputState TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse CCR2_Val; TIM_OC2Init(TIM2, TIM_OCInitStructure); TIM_OC2PreloadConfig(TIM2, TIM_OCPreload_Disable); /* Output Compare Timing Mode configuration: Channel3 */ TIM_OCInitStructure.TIM_OutputState TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse CCR3_Val; TIM_OC3Init(TIM2, TIM_OCInitStructure); TIM_OC3PreloadConfig(TIM2, TIM_OCPreload_Disable); /* Output Compare Timing Mode configuration: Channel4 */ TIM_OCInitStructure.TIM_OutputState TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse CCR4_Val; TIM_OC4Init(TIM2, TIM_OCInitStructure); TIM_OC4PreloadConfig(TIM2, TIM_OCPreload_Disable); /* TIM IT enable */ TIM_ITConfig(TIM2, TIM_IT_CC1 | TIM_IT_CC2 | TIM_IT_CC3 | TIM_IT_CC4, ENABLE); /* TIM2 enable counter */ TIM_Cmd(TIM2, ENABLE); while (1); } /** * brief Configures the different system clocks. * param None * retval None */ void RCC_Configuration(void) { /* PCLK1 HCLK/4 */ RCC_PCLK1Config(RCC_HCLK_Div4); /* TIM2 clock enable */ RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); /* GPIOC clock enable */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE); } /** * brief Configure the GPIO Pins. * param None * retval None */ void GPIO_Configuration(void) { GPIO_InitTypeDef GPIO_InitStructure; /* GPIOC Configuration:Pin6, 7, 8 and 9 as alternate function push-pull */ GPIO_InitStructure.GPIO_Pin GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9; GPIO_InitStructure.GPIO_Mode GPIO_Mode_Out_PP; GPIO_InitStructure.GPIO_Speed GPIO_Speed_50MHz; GPIO_Init(GPIOC, GPIO_InitStructure); } /** * brief Configure the nested vectored interrupt controller. * param None * retval None */ void NVIC_Configuration(void) { NVIC_InitTypeDef NVIC_InitStructure; /* Enable the TIM2 global Interrupt */ NVIC_InitStructure.NVIC_IRQChannel TIM2_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority 0; NVIC_InitStructure.NVIC_IRQChannelSubPriority 1; NVIC_InitStructure.NVIC_IRQChannelCmd ENABLE; NVIC_Init(NVIC_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****/