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lijie
2023-12-18 14:36:22 +08:00
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MPU6050/APP/pwm.c Normal file
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#include "pwm.h"
void TIM2_PWM_Init(void)
{
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); //ʹ<><CAB9>TIM2ʱ<32><CAB1>
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); //ʹ<><CAB9>GPIOAʱ<41><CAB1>
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE); //ʹ<><CAB9>GPIOAʱ<41><CAB1>
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Pin =GPIO_Pin_14;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOC, &GPIO_InitStructure);
//<2F><><EFBFBD><EFBFBD>PA1<41><31>PA2Ϊ<32><CEAA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģʽ<C4A3><CABD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ٶ<EFBFBD>Ϊ50MHZ
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Pin =GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
//<2F><><EFBFBD><EFBFBD>TIM2<4D>ڲ<EFBFBD>ʱ<EFBFBD><CAB1>
TIM_InternalClockConfig(TIM2);
//<2F><><EFBFBD><EFBFBD>TIM2
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1; //ʱ<>ӷ<EFBFBD>Ƶ
TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽ<EFBFBD><CABD><EFBFBD>ϼ<EFBFBD><CFBC><EFBFBD>
TIM_TimeBaseInitStructure.TIM_Period = 1440 - 1; //ARR <20>Զ<EFBFBD><D4B6><EFBFBD>װ<EFBFBD><D7B0>ֵ
TIM_TimeBaseInitStructure.TIM_Prescaler = 1 - 1; //PSC Ԥ<><D4A4>Ƶ<EFBFBD><C6B5>
TIM_TimeBaseInitStructure.TIM_RepetitionCounter = 0; //
TIM_TimeBaseInit(TIM2,&TIM_TimeBaseInitStructure);
//<2F><><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
TIM_OCInitTypeDef TIM_OCInitStructure;
TIM_OCStructInit(&TIM_OCInitStructure);
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;//<2F><><EFBFBD><EFBFBD>PWMģʽ1
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;//<2F><>Ч<EFBFBD><D0A7><EFBFBD><EFBFBD>Ϊ<EFBFBD>ߵ<EFBFBD>ƽ
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 0; //CCR
TIM_OC1Init(TIM2, &TIM_OCInitStructure); //<2F><>ʼ<EFBFBD><CABC>ͨ<EFBFBD><CDA8>1 PA0
TIM_OC2Init(TIM2, &TIM_OCInitStructure); //<2F><>ʼ<EFBFBD><CABC>ͨ<EFBFBD><CDA8>2 PA1
TIM_OC3Init(TIM2, &TIM_OCInitStructure); //<2F><>ʼ<EFBFBD><CABC>ͨ<EFBFBD><CDA8>3 PA2
TIM_Cmd(TIM2, ENABLE); //ʹ<>ܶ<EFBFBD>ʱ<EFBFBD><CAB1>2
}
void TIM4_1ms_Init(void) //(u16 arr,u16 psc)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4,ENABLE);
NVIC_InitStructure.NVIC_IRQChannel=TIM4_IRQn;
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);
TIM_TimeBaseInitStructure.TIM_Period = 1000-1; //1ms
TIM_TimeBaseInitStructure.TIM_Prescaler= 72-1; //72<37><32>Ƶ=1MHz
TIM_TimeBaseInitStructure.TIM_CounterMode=TIM_CounterMode_Up;
TIM_TimeBaseInitStructure.TIM_ClockDivision=TIM_CKD_DIV1;
TIM_TimeBaseInit(TIM4,&TIM_TimeBaseInitStructure);
TIM_ITConfig(TIM4,TIM_IT_Update,ENABLE);
TIM_Cmd(TIM4,ENABLE);
}
uint32_t time1_cntr;
uint32_t time2_cntr;
//<2F><>ʱ<EFBFBD><CAB1><EFBFBD>жϷ<D0B6><CFB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
void TIM4_IRQHandler(void)
{
if(TIM_GetITStatus(TIM4,TIM_IT_Update)==SET) //<2F><><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD>
{
time1_cntr++;
time2_cntr++;
}
TIM_ClearITPendingBit(TIM4,TIM_IT_Update); //<2F><><EFBFBD><EFBFBD><EFBFBD>жϱ<D0B6>־λ
}