From afbb4cc73c44b6321cae39dbe46b97155805097d Mon Sep 17 00:00:00 2001 From: Trygve Laugstøl Date: Sun, 13 Dec 2015 21:03:11 +0100 Subject: wip --- .../TIM/OnePulse/main.c | 198 +++++++++++++++++++++ 1 file changed, 198 insertions(+) create mode 100644 tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/OnePulse/main.c (limited to 'tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/OnePulse/main.c') diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/OnePulse/main.c b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/OnePulse/main.c new file mode 100644 index 0000000..75ccc2f --- /dev/null +++ b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/OnePulse/main.c @@ -0,0 +1,198 @@ +/** + ****************************************************************************** + * @file TIM/OnePulse/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. + * + *

© COPYRIGHT 2011 STMicroelectronics

+ ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f10x.h" + +/** @addtogroup STM32F10x_StdPeriph_Examples + * @{ + */ + +/** @addtogroup TIM_OnePulse + * @{ + */ + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; +TIM_ICInitTypeDef TIM_ICInitStructure; +TIM_OCInitTypeDef TIM_OCInitStructure; +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 + */ + + /* System Clocks Configuration */ + RCC_Configuration(); + + /* Configure the GPIO ports */ + GPIO_Configuration(); + + /* TIM4 configuration: One Pulse mode ------------------------ + The external signal is connected to TIM4_CH2 pin (PB.07), + The Rising edge is used as active edge, + The One Pulse signal is output on TIM4_CH1 pin (PB.06) + The TIM_Pulse defines the delay value + The (TIM_Period - TIM_Pulse) defines the One Pulse value. + TIM2CLK = SystemCoreClock, we want to get TIM2 counter clock at 24 MHz: + - Prescaler = (TIM2CLK / TIM2 counter clock) - 1 + The Autoreload value is 65535 (TIM4->ARR), so the maximum frequency value + to trigger the TIM4 input is 24000000/65535 = 300 Hz. + + The TIM_Pulse defines the delay value, the delay value is fixed + to 682.6 us: + delay = CCR1/TIM4 counter clock = 682.6 us. + The (TIM_Period - TIM_Pulse) defines the One Pulse value, + the pulse value is fixed to 2.048 ms: + One Pulse value = (TIM_Period - TIM_Pulse) / TIM4 counter clock = 2.048 ms. + + * SystemCoreClock is set to 72 MHz for Low-density, Medium-density, High-density + and Connectivity line devices and to 24 MHz for Value line devices + ------------------------------------------------------------ */ + + /* Compute the prescaler value */ + PrescalerValue = (uint16_t) (SystemCoreClock / 24000000) - 1; + /* Time base configuration */ + TIM_TimeBaseStructure.TIM_Period = 65535; + TIM_TimeBaseStructure.TIM_Prescaler = PrescalerValue; + TIM_TimeBaseStructure.TIM_ClockDivision = 0; + TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; + + TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure); + + /* TIM4 PWM2 Mode configuration: Channel1 */ + TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2; + TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; + TIM_OCInitStructure.TIM_Pulse = 16383; + TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; + + TIM_OC1Init(TIM4, &TIM_OCInitStructure); + + /* TIM4 configuration in Input Capture Mode */ + + TIM_ICStructInit(&TIM_ICInitStructure); + + 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 = 0; + + TIM_ICInit(TIM4, &TIM_ICInitStructure); + + /* One Pulse Mode selection */ + TIM_SelectOnePulseMode(TIM4, TIM_OPMode_Single); + + /* Input Trigger selection */ + TIM_SelectInputTrigger(TIM4, TIM_TS_TI2FP2); + + /* Slave Mode selection: Trigger Mode */ + TIM_SelectSlaveMode(TIM4, TIM_SlaveMode_Trigger); + + while (1) + {} +} + +/** + * @brief Configures the different system clocks. + * @param None + * @retval None + */ +void RCC_Configuration(void) +{ + /* TIM4 clock enable */ + RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE); + + /* GPIOB clock enable */ + RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); +} + +/** + * @brief Configure the GPIOD Pins. + * @param None + * @retval None + */ +void GPIO_Configuration(void) +{ + GPIO_InitTypeDef GPIO_InitStructure; + + /* TIM4_CH1 pin (PB.06) configuration */ + GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; + GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; + + GPIO_Init(GPIOB, &GPIO_InitStructure); + + /* TIM4_CH2 pin (PB.07) configuration */ + GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; + + GPIO_Init(GPIOB, &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****/ -- cgit v1.2.3