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- 2016-5-18
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- 2 小时
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楼主 |
发表于 2016-5-26 17:01:09
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配置如下
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStrue;
GPIO_InitTypeDef GPIO_InitStructure;
TIM_OCInitTypeDef TIM_OCInitStruct;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3,ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB|RCC_APB2Periph_AFIO, ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_Disable, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; //pb53õê¼»ˉ
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //¸′óÃíÆíìêä3ö
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //IO¿úËù¶èÎa50MHz
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; //pb43õê¼»ˉ
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //¸′óÃíÆíìêä3ö
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //IO¿úËù¶èÎa50MHz
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_PinRemapConfig(GPIO_PartialRemap_TIM3,ENABLE);//Æô¶ˉ2¿·ÖÖØó3éäTIM3CH1-PB4 TIM3CH2-PB5
////////////////////////////////////////////////////
TIM_TimeBaseInitStrue.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseInitStrue.TIM_CounterMode = TIM_CounterMode_Up; //¼ÆêyÆ÷ÏòéϼÆêy
TIM_TimeBaseInitStrue.TIM_Period = arr;
TIM_TimeBaseInitStrue.TIM_Prescaler = psc;
TIM_TimeBaseInit(TIM3,&TIM_TimeBaseInitStrue);
///////////////////////////////////////////////////////////////
TIM_OCInitStruct.TIM_OCMode = TIM_OCMode_PWM2;
TIM_OCInitStruct.TIM_OCPolarity = TIM_OCPolarity_Low;
TIM_OCInitStruct.TIM_OutputState = TIM_OutputState_Enable;
TIM_OC2Init(TIM3,&TIM_OCInitStruct);//¼Æê±Æ÷3í¨μà23õê¼»ˉ
TIM_OC1Init(TIM3,&TIM_OCInitStruct);//¼Æê±Æ÷3í¨μà13õê¼»ˉ
TIM_OC3Init(TIM3,&TIM_OCInitStruct);
TIM_OC4Init(TIM3,&TIM_OCInitStruct);
//
TIM_OC2PreloadConfig(TIM3,TIM_OCPreload_Enable);
TIM_OC1PreloadConfig(TIM3,TIM_OCPreload_Enable);
TIM_OC3PreloadConfig(TIM3,TIM_OCPreload_Enable);
TIM_OC4PreloadConfig(TIM3,TIM_OCPreload_Enable);
TIM_Cmd(TIM3,ENABLE); |
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