105 lines
3.1 KiB
C
105 lines
3.1 KiB
C
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/**
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******************************************************************
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* @file bsp_key.c
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* @author fire
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* @version V1.0
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* @date 2015-xx-xx
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* @brief LPTIM-<EFBFBD><EFBFBD><EFBFBD>Ķ<EFBFBD>ʱ<EFBFBD><EFBFBD>PWM<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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******************************************************************
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* @attention
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*
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* ʵ<EFBFBD><EFBFBD>ƽ̨:Ұ<EFBFBD><EFBFBD> STM32H750 <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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* <EFBFBD><EFBFBD>̳ :http://www.firebbs.cn
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* <EFBFBD>Ա<EFBFBD> :http://firestm32.taobao.com
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*
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******************************************************************
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*/
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#include "./lptim/bsp_lptim.h"
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LPTIM_HandleTypeDef LPTIM_Handle;
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/**
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* @brief LPTIM<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ų<EFBFBD>ʼ<EFBFBD><EFBFBD>
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* @param <EFBFBD><EFBFBD>
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* @retval <EFBFBD><EFBFBD>
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*/
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void LPTIM_GPIO_Config(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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/*<2A><><EFBFBD><EFBFBD>LPTIM1<4D><31><EFBFBD>ŵ<EFBFBD>ʱ<EFBFBD><CAB1>*/
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LPTIMx_OUT_GPIO_CLK_ENABLE();
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/*ѡ<><EFBFBD><F1B0B4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>*/
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GPIO_InitStructure.Pin = LPTIMx_OUT_PIN;
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/*<2A><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD><EFBFBD>ƒ<EFBFBD>ģʽ*/
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GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
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/*<2A><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ų<EFBFBD><C5B2><EFBFBD><EFBFBD><EFBFBD>Ҳ<EFBFBD><D2B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>*/
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GPIO_InitStructure.Pull = GPIO_PULLUP;
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GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;
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GPIO_InitStructure.Alternate = LPTIMx_OUT_AF;
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/*ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ľṹ<C4BD><E1B9B9><EFBFBD><EFBFBD>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>*/
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HAL_GPIO_Init(LPTIMx_OUT_GPIO_PORT, &GPIO_InitStructure);
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}
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/**
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* @brief <EFBFBD><EFBFBD><EFBFBD><EFBFBD>TIM<EFBFBD><EFBFBD><EFBFBD><EFBFBD>PWM
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* @param <EFBFBD><EFBFBD>
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* @retval <EFBFBD><EFBFBD>
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*/
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void LPTIM_MODE_Config(void)
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{
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RCC_PeriphCLKInitTypeDef RCC_PeriphCLKInitStruct;
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uint32_t PeriodValue;
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uint32_t PulseValue;
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RCC_PeriphCLKInitStruct.PeriphClockSelection = RCC_PERIPHCLK_LPTIM1;
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/* ѡ<><D1A1>LSIʱ<49><CAB1><EFBFBD><EFBFBD>ΪLPTIMʱ<4D><CAB1>Դ */
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#if (LPTIMx_CLK_Source == LSI)
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RCC_PeriphCLKInitStruct.Lptim1ClockSelection = RCC_LPTIM1CLKSOURCE_LSI;
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/* ѡ<><D1A1>LSEʱ<45><CAB1><EFBFBD><EFBFBD>ΪLPTIMʱ<4D><CAB1>Դ */
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#elif (LPTIMx_CLK_Source == LSE)
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RCC_PeriphCLKInitStruct.Lptim1ClockSelection = RCC_LPTIM1CLKSOURCE_LSE;
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#endif
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HAL_RCCEx_PeriphCLKConfig(&RCC_PeriphCLKInitStruct);
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/*<2A><><EFBFBD><EFBFBD>LPTIM1<4D><31>ʱ<EFBFBD><CAB1>*/
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LPTIMx_CLK_ENABLE();
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/* <20><><EFBFBD>嶨ʱ<E5B6A8><CAB1><EFBFBD>ľ<EFBFBD><C4BE><EFBFBD><EFBFBD><EFBFBD>ȷ<EFBFBD><C8B7><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD>Ļ<EFBFBD><C4BB><EFBFBD>ַ*/
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LPTIM_Handle.Instance = LPTIMx_Instance;
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//ѡ<><D1A1><EFBFBD>ڲ<EFBFBD>ʱ<EFBFBD><CAB1>ԴLPTIM_CLK = LSE=32.768KHz
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LPTIM_Handle.Init.Clock.Source = LPTIM_CLOCKSOURCE_APBCLOCK_LPOSC;
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// <20><>ʱ<EFBFBD><CAB1>ʱ<EFBFBD>ӷ<EFBFBD>Ƶϵ<C6B5><CFB5>
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LPTIM_Handle.Init.Clock.Prescaler = LPTIM_PRESCALER_DIV1;
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// <20><>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Դ<EFBFBD><D4B4><EFBFBD>ڲ<EFBFBD>
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LPTIM_Handle.Init.CounterSource = LPTIM_COUNTERSOURCE_INTERNAL;
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// <20><><EFBFBD><EFBFBD>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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LPTIM_Handle.Init.Trigger.Source = LPTIM_TRIGSOURCE_SOFTWARE;
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// <20><>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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LPTIM_Handle.Init.OutputPolarity = LPTIM_OUTPUTPOLARITY_HIGH;
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// <20><>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD>·<EFBFBD>ʽ
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LPTIM_Handle.Init.UpdateMode = LPTIM_UPDATE_IMMEDIATE;
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HAL_LPTIM_Init(&LPTIM_Handle);
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/*PWMģʽ<C4A3><CABD><EFBFBD><EFBFBD>*/
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/*<2A><><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>0<EFBFBD><30><EFBFBD><EFBFBD><EFBFBD><EFBFBD>99<39><39><EFBFBD><EFBFBD>Ϊ100<30>Σ<EFBFBD>
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Ϊһ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>PWM<EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD>32.768KHz/100=327.68Hz*/
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PeriodValue = 100-1;
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/*PWM<57><4D><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>һ<EFBFBD>뼴50% */
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PulseValue = 50-1;
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HAL_LPTIM_PWM_Start(&LPTIM_Handle, PeriodValue, PulseValue);
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}
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/**
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* @brief <EFBFBD><EFBFBD><EFBFBD>Ķ<EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD>ģʽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>PWM
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* @param <EFBFBD><EFBFBD>
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* @retval <EFBFBD><EFBFBD>
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*/
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void LPTIM_PWM_OUT(void)
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{
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LPTIM_GPIO_Config();
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LPTIM_MODE_Config();
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/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><CDB9><EFBFBD>ģʽ */
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HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
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/* <20>ȴ<EFBFBD>ϵͳ<CFB5><CDB3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>KEY2<59><32><EFBFBD>ѣ<EFBFBD><D1A3>˳<EFBFBD><CBB3><EFBFBD><CDB9><EFBFBD>ģʽ<C4A3><CABD>ֹͣ<CDA3><D6B9><EFBFBD><EFBFBD>PWM */
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HAL_LPTIM_PWM_Stop(&LPTIM_Handle);
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}
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/*********************************************END OF FILE**********************/
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