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Diffstat (limited to 'tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/OCToggle/main.c')
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diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/OCToggle/main.c b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/OCToggle/main.c new file mode 100644 index 0000000..5498f0f --- /dev/null +++ b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/OCToggle/main.c @@ -0,0 +1,233 @@ +/** + ****************************************************************************** + * @file TIM/OCToggle/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_OCToggle + * @{ + */ + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; +TIM_OCInitTypeDef TIM_OCInitStructure; +__IO uint16_t CCR1_Val = 32768; +__IO uint16_t CCR2_Val = 16384; +__IO uint16_t CCR3_Val = 8192; +__IO uint16_t CCR4_Val = 4096; +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(); + + /* --------------------------------------------------------------------------- + TIM3 Configuration: Output Compare Toggle Mode: + TIM3CLK = SystemCoreClock / 2, + The objective is to get TIM3 counter clock at 12 MHz: + - Prescaler = (TIM3CLK / TIM3 counter clock) - 1 + CC1 update rate = TIM3 counter clock / CCR1_Val = 366.2 Hz + CC2 update rate = TIM3 counter clock / CCR2_Val = 732.4 Hz + CC3 update rate = TIM3 counter clock / CCR3_Val = 1464.8 Hz + CC4 update rate = TIM3 counter clock / CCR4_Val = 2929.6 Hz + ----------------------------------------------------------------------------*/ + /* 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(TIM3, &TIM_TimeBaseStructure); + + /* Output Compare Toggle Mode configuration: Channel1 */ + TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Toggle; + TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; + TIM_OCInitStructure.TIM_Pulse = CCR1_Val; + TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low; + TIM_OC1Init(TIM3, &TIM_OCInitStructure); + + TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Disable); + + /* Output Compare Toggle Mode configuration: Channel2 */ + TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; + TIM_OCInitStructure.TIM_Pulse = CCR2_Val; + + TIM_OC2Init(TIM3, &TIM_OCInitStructure); + + TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Disable); + + /* Output Compare Toggle Mode configuration: Channel3 */ + TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; + TIM_OCInitStructure.TIM_Pulse = CCR3_Val; + + TIM_OC3Init(TIM3, &TIM_OCInitStructure); + + TIM_OC3PreloadConfig(TIM3, TIM_OCPreload_Disable); + + /* Output Compare Toggle Mode configuration: Channel4 */ + TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; + TIM_OCInitStructure.TIM_Pulse = CCR4_Val; + + TIM_OC4Init(TIM3, &TIM_OCInitStructure); + + TIM_OC4PreloadConfig(TIM3, TIM_OCPreload_Disable); + + /* TIM enable counter */ + TIM_Cmd(TIM3, ENABLE); + + /* TIM IT enable */ + TIM_ITConfig(TIM3, TIM_IT_CC1 | TIM_IT_CC2 | TIM_IT_CC3 | TIM_IT_CC4, 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); + + /* TIM3 clock enable */ + RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); + + /* GPIOA clock enable */ + RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB| + RCC_APB2Periph_GPIOC | RCC_APB2Periph_AFIO, ENABLE); +} + +/** + * @brief Configure the TIM3 Pins. + * @param None + * @retval None + */ +void GPIO_Configuration(void) +{ + GPIO_InitTypeDef GPIO_InitStructure; + +#ifdef STM32F10X_CL + /*GPIOB Configuration: TIM3 channel1, 2, 3 and 4 */ + GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; + GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; + + GPIO_Init(GPIOC, &GPIO_InitStructure); + + GPIO_PinRemapConfig(GPIO_FullRemap_TIM3, ENABLE); + +#else + /* GPIOA Configuration:TIM3 Channel1, 2, 3 and 4 as alternate function push-pull */ + GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; + GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; + + GPIO_Init(GPIOA, &GPIO_InitStructure); + + GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1; + GPIO_Init(GPIOB, &GPIO_InitStructure); +#endif +} + +/** + * @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 = 0; + 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****/ |