PWM呼吸灯
源代码：
- #include "PWM_Breath.h"
- void TIM_GPIO_Config(void)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
-
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE);
-
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
-
- GPIO_Init(GPIOB, &GPIO_InitStructure);
- }
- void TIM_NVIC_Config(void)
- {
- NVIC_InitTypeDef NVIC_InitStructure;
-
- NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
-
- /*配置TIM3_IRQ中断为中断源*/
- NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;
- NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
- NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
- NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
- NVIC_Init(&NVIC_InitStructure);
- }
- void TIM_MODE_Config(void)
- {
- TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
- TIM_OCInitTypeDef TIM_OCInitStructure;
-
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3,ENABLE);
-
- TIM_TimeBaseStructure.TIM_Period = 255;
- TIM_TimeBaseStructure.TIM_Prescaler = 1999;
- TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
- TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
- TIM_TimeBaseInit(TIM3,&TIM_TimeBaseStructure);
-
- TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
- TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
- TIM_OCInitStructure.TIM_Pulse = 0 ;
- TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
-
- TIM_OC3Init(TIM3,&TIM_OCInitStructure);
-
-
-
- }
下载：
呼吸灯.zip
(306.23 KB, 下载次数: 50)
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