高级定时器TIM1输出PWM波

高级定时器（TIM1和TIM8）相较于通用定时器，它的函数配置更多，一个都不能少，否则输出不了PWM波，所以在此写下通用定时器和高级定时器PWM波配置的区别，以记录问题。
通用定时器TIM3通道1配置

void TIM3_CH1_PWM_Init(u16 per,u16 psc)
{
	TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
	TIM_OCInitTypeDef TIM_OCInitStructure;
	GPIO_InitTypeDef GPIO_InitStructure;
	
	/* 开启时钟 */
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC,ENABLE);
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3,ENABLE);
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);
	
	/*  配置GPIO的模式和IO口 */
	GPIO_InitStructure.GPIO_Pin=GPIO_Pin_6;
	GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
	GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;//复用推挽输出
	GPIO_Init(GPIOC,&GPIO_InitStructure);
	
	GPIO_PinRemapConfig(GPIO_FullRemap_TIM3,ENABLE);//改变指定管脚的映射	
	
	TIM_TimeBaseInitStructure.TIM_Period=per;   //自动装载值
	TIM_TimeBaseInitStructure.TIM_Prescaler=psc; //分频系数
	TIM_TimeBaseInitStructure.TIM_ClockDivision=TIM_CKD_DIV1;
	TIM_TimeBaseInitStructure.TIM_CounterMode=TIM_CounterMode_Up; //设置向上计数模式
	TIM_TimeBaseInit(TIM3,&TIM_TimeBaseInitStructure);	
	
	TIM_OCInitStructure.TIM_OCMode=TIM_OCMode_PWM1;
	TIM_OCInitStructure.TIM_OCPolarity=TIM_OCPolarity_Low;
	TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable;
	TIM_OC1Init(TIM3,&TIM_OCInitStructure); //输出比较通道1初始化
	
	TIM_OC1PreloadConfig(TIM3,TIM_OCPreload_Enable); //使能TIMx在 CCR1 上的预装载寄存器
	TIM_ARRPreloadConfig(TIM3,ENABLE);//使能预装载寄存器
	
	TIM_CtrlPWMOutputs(TIM3,ENABLE);
	TIM_Cmd(TIM3,ENABLE); //使能定时器	
}

高级定时器TIM1通道1的配置

void TIM1_CH1_PWM_Init(u16 per,u16 psc)
{
	GPIO_InitTypeDef GPIO_InitStructure;
	TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
	TIM_OCInitTypeDef  TIM_OCInitStructure;
 
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
 	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA , ENABLE);  
	                                                                     	
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8; 
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOA, &GPIO_InitStructure);
	
	TIM_TimeBaseStructure.TIM_Period = per; 
	TIM_TimeBaseStructure.TIM_Prescaler =psc; 
	TIM_TimeBaseStructure.TIM_ClockDivision = 0; 
	TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  
	TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure); 

	//此处结构体必须全部配置，否则输出不了PWM波！！！！
	TIM_OCInitStructure.TIM_Pulse = 0; 		//待装入捕获比较寄存器的脉冲值
	TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;  //TIM1脉冲宽度调制模式1
	TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;//使能输出比较状态
	TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;//使能输出比较N状态
	TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;//TIM1 输出比较极性高
	TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;//TIM1 输出比较N极性高
	TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset;//当 MOE=0 重置 TIM1 输出比较空闲状态
	TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Reset;//当 MOE=0 重置 TIM1 输出比较 N 空闲状态
	TIM_OC1Init(TIM1, &TIM_OCInitStructure); //输出比较通道1初始化  
 
	TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);//使能TIMx在 CCR1 上的预装 
	TIM_ARRPreloadConfig(TIM1, ENABLE);//使能预装载寄存器
	
	TIM_CtrlPWMOutputs(TIM1,ENABLE);
	TIM_Cmd(TIM1, ENABLE);  //使能定时器	
}