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Diffstat (limited to 'tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/PWM_Input/main.c')
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1 files changed, 178 insertions, 0 deletions
diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/PWM_Input/main.c b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/PWM_Input/main.c new file mode 100644 index 0000000..b430f26 --- /dev/null +++ b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/PWM_Input/main.c @@ -0,0 +1,178 @@ +/** + ****************************************************************************** + * @file TIM/PWM_Input/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 TIM_PWM_Input + * @{ + */ + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +TIM_ICInitTypeDef TIM_ICInitStructure; + +/* 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(); + + /* Configure the GPIO ports */ + GPIO_Configuration(); + + /* TIM3 configuration: PWM Input mode ------------------------ + The external signal is connected to TIM3 CH2 pin (PA.01), + The Rising edge is used as active edge, + The TIM3 CCR2 is used to compute the frequency value + The TIM3 CCR1 is used to compute the duty cycle value + ------------------------------------------------------------ */ + + TIM_ICInitStructure.TIM_Channel = TIM_Channel_2; + TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising; + TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI; + TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1; + TIM_ICInitStructure.TIM_ICFilter = 0x0; + + TIM_PWMIConfig(TIM3, &TIM_ICInitStructure); + + /* Select the TIM3 Input Trigger: TI2FP2 */ + TIM_SelectInputTrigger(TIM3, TIM_TS_TI2FP2); + + /* Select the slave Mode: Reset Mode */ + TIM_SelectSlaveMode(TIM3, TIM_SlaveMode_Reset); + + /* Enable the Master/Slave Mode */ + TIM_SelectMasterSlaveMode(TIM3, TIM_MasterSlaveMode_Enable); + + /* TIM enable counter */ + TIM_Cmd(TIM3, ENABLE); + + /* Enable the CC2 Interrupt Request */ + TIM_ITConfig(TIM3, TIM_IT_CC2, ENABLE); + + while (1); +} + +/** + * @brief Configures the different system clocks. + * @param None + * @retval None + */ +void RCC_Configuration(void) +{ + /* TIM3 clock enable */ + RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); + + /* GPIOA clock enable */ + RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); +} + +/** + * @brief Configure the GPIO Pins. + * @param None + * @retval None + */ +void GPIO_Configuration(void) +{ + GPIO_InitTypeDef GPIO_InitStructure; + + /* TIM3 channel 2 pin (PA.07) configuration */ + GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; + GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; + + GPIO_Init(GPIOA, &GPIO_InitStructure); +} + +/** + * @brief Configure the nested vectored interrupt controller. + * @param None + * @retval None + */ +void NVIC_Configuration(void) +{ + NVIC_InitTypeDef NVIC_InitStructure; + + /* Enable the TIM3 global Interrupt */ + NVIC_InitStructure.NVIC_IRQChannel = TIM3_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****/ |