[Log] stm32 develop multiple pwm implementation, 9-way pwm

Configuration Timer

void TIM3_Int_Init(u16 arr,u16 psc)
{
    TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
	NVIC_InitTypeDef NVIC_InitStructure;

	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); //时钟使能
	
	//定时器TIM3初始化
	TIM_TimeBaseStructure.TIM_Period = arr; //设置在下一个更新事件装入活动的自动重装载寄存器周期的值	
	TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置用来作为TIMx时钟频率除数的预分频值
	TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //设置时钟分割:TDTS = Tck_tim
	TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIM向上计数模式
	TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); //根据指定的参数初始化TIMx的时间基数单位
 
	TIM_ITConfig(TIM3,TIM_IT_Update,ENABLE ); //使能指定的TIM3中断,允许更新中断

	//中断优先级NVIC设置
	NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;  //TIM3中断
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;  //先占优先级0级
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;  //从优先级3级
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道被使能
	NVIC_Init(&NVIC_InitStructure);  //初始化NVIC寄存器


	TIM_Cmd(TIM3, ENABLE);  //使能TIMx					 
}
//定时器3中断服务程序
void TIM3_IRQHandler(void)   //TIM3中断
{
	if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET)  //检查TIM3更新中断发生与否
		{
		TIM_ClearITPendingBit(TIM3, TIM_IT_Update  );  //清除TIMx更新中断标志 
		LED1=!LED1;
		}
}

void TIM3_PWM_Init(u16 arr,u16 psc)//,u16 arr3,u16 psc3,u16 arr4,u16 psc4)
{
  GPIO_InitTypeDef GPIO_InitStructure;
	TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
	TIM_OCInitTypeDef  TIM_OCInitStructure;
	
	//PWMA  PA7
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);	//使能定时器3时钟
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA  | RCC_APB2Periph_AFIO, ENABLE);  //使能GPIO外设和AFIO复用功能模块时钟
 
   //设置该引脚为复用输出功能,输出TIM3 CH2的PWM脉冲波形	GPIOA.7
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7; //TIM_CH2
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  //复用推挽输出
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOA, &GPIO_InitStructure);//初始化GPIO
 
   //初始化TIM3
	TIM_TimeBaseStructure.TIM_Period = arr; //设置在下一个更新事件装入活动的自动重装载寄存器周期的值
	TIM_TimeBaseStructure.TIM_Prescaler = psc; //设置用来作为TIMx时钟频率除数的预分频值 
	TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //设置时钟分割:TDTS = Tck_tim
	TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIM向上计数模式
	TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位
	
	//初始化TIM3 Channel2 PWM模式	 
	TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //选择定时器模式:TIM脉冲宽度调制模式2
 	TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //比较输出使能
	TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //输出极性:TIM输出比较极性高
	TIM_OCInitStructure.TIM_Pulse = 0;
	TIM_OC2Init(TIM3, &TIM_OCInitStructure);  //根据T指定的参数初始化外设TIM3 OC2
	TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Enable);  //使能TIM3在CCR2上的预装载寄存器
	TIM_Cmd(TIM3, ENABLE);  //使能TIM3
	
	
	
	
	//PWMB PA6
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);	//使能定时器3时钟
 	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA  | RCC_APB2Periph_AFIO, ENABLE);  //使能GPIO外设和AFIO复用功能模块时钟
 
   //设置该引脚为复用输出功能,输出TIM3 CH1的PWM脉冲波形	GPIOA.6
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6; //TIM3_CH1
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  //复用推挽输出
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOA, &GPIO_InitStructure);//初始化GPIO
	
	//初始化TIM3 Channel1 PWM模式	 
	TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //选择定时器模式:TIM脉冲宽度调制模式2
 	TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //比较输出使能
	TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //输出极性:TIM输出比较极性高
	TIM_OCInitStructure.TIM_Pulse = 0;
	TIM_OC1Init(TIM3, &TIM_OCInitStructure);  //根据T指定的参数初始化外设TIM3 OC1
	TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Enable);  //使能TIM4在CCR1上的预装载寄存器
	TIM_Cmd(TIM3, ENABLE);  //使能TIM3
	
	
	
	//PWMB PB0
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);	//使能定时器3时钟
 	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB  | RCC_APB2Periph_AFIO, ENABLE);  //使能GPIO外设和AFIO复用功能模块时钟
 
   //设置该引脚为复用输出功能,输出TIM3 CH3的PWM脉冲波形	GPIOB.0
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0; //TIM3_CH3
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  //复用推挽输出
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化GPIO
	
	//初始化TIM3 Channel3 PWM模式	 
	TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //选择定时器模式:TIM脉冲宽度调制模式2
 	TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //比较输出使能
	TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //输出极性:TIM输出比较极性高
	TIM_OCInitStructure.TIM_Pulse = 0;
	TIM_OC3Init(TIM3, &TIM_OCInitStructure);  //根据T指定的参数初始化外设TIM3 OC3
	TIM_OC3PreloadConfig(TIM3, TIM_OCPreload_Enable);  //使能TIM4在CCR3上的预装载寄存器
	TIM_Cmd(TIM3, ENABLE);  //使能TIM3
	
	
	
	//PWMB PB1
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);	//使能定时器3时钟
 	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB  | RCC_APB2Periph_AFIO, ENABLE);  //使能GPIO外设和AFIO复用功能模块时钟
 
   //设置该引脚为复用输出功能,输出TIM4 CH1的PWM脉冲波形	GPIOB.1
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1; //TIM3_CH4
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  //复用推挽输出
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化GPIO
	
	//初始化TIM3 Channel4 PWM模式	 
	TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //选择定时器模式:TIM脉冲宽度调制模式2
 	TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //比较输出使能
	TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //输出极性:TIM输出比较极性高
	TIM_OCInitStructure.TIM_Pulse = 0;
	TIM_OC4Init(TIM3, &TIM_OCInitStructure);  //根据T指定的参数初始化外设TIM3 OC4
	TIM_OC4PreloadConfig(TIM3, TIM_OCPreload_Enable);  //使能TIM4在CCR4上的预装载寄存器
	TIM_Cmd(TIM3, ENABLE);  //使能TIM3
	
	
	
	//PWMB PB5
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);	//使能定时器3时钟
 	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB  | RCC_APB2Periph_AFIO, ENABLE);  //使能GPIO外设和AFIO复用功能模块时钟
 
   //设置该引脚为复用输出功能,输出TIM4 CH1的PWM脉冲波形	GPIOB.1
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1; //TIM3_CH4
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  //复用推挽输出
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化GPIO
	
	//初始化TIM3 Channel4 PWM模式	 
	TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //选择定时器模式:TIM脉冲宽度调制模式2
 	TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //比较输出使能
	TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //输出极性:TIM输出比较极性高
	TIM_OCInitStructure.TIM_Pulse = 0;
	TIM_OC4Init(TIM3, &TIM_OCInitStructure);  //根据T指定的参数初始化外设TIM3 OC4
	TIM_OC4PreloadConfig(TIM3, TIM_OCPreload_Enable);  //使能TIM4在CCR4上的预装载寄存器
	TIM_Cmd(TIM3, ENABLE);  //使能TIM3


}

void TIM2_PWM_Init(u16 arr,u16 psc)
{
	GPIO_InitTypeDef GPIO_InitStructure;
	TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
	TIM_OCInitTypeDef  TIM_OCInitStructure;
	
	//PWMA  PA0
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);	//使能定时器2时钟
 
   //设置该引脚为复用输出功能,输出TIM2 CH1的PWM脉冲波形	GPIOA.0
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0; //TIM_CH1
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  //复用推挽输出
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOA, &GPIO_InitStructure);//初始化GPIO
 
   //初始化TIM2
	TIM_TimeBaseStructure.TIM_Period = arr; //设置在下一个更新事件装入活动的自动重装载寄存器周期的值
	TIM_TimeBaseStructure.TIM_Prescaler = psc; //设置用来作为TIMx时钟频率除数的预分频值 
	TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //设置时钟分割:TDTS = Tck_tim
	TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIM向上计数模式
	TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位
	
	//初始化TIM2 Channel1 PWM模式	 
	TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //选择定时器模式:TIM脉冲宽度调制模式2
 	TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //比较输出使能
	TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //输出极性:TIM输出比较极性高
	TIM_OCInitStructure.TIM_Pulse = 0;
	TIM_OC1Init(TIM2, &TIM_OCInitStructure);  //根据T指定的参数初始化外设TIM3 OC1
	TIM_OC1PreloadConfig(TIM2, TIM_OCPreload_Enable);  //使能TIM2在CCR1上的预装载寄存器
	TIM_Cmd(TIM2, ENABLE);  //使能TIM2
	
	
	
	
	//PWMA PA1
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);	//使能定时器2时钟
 	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA  | RCC_APB2Periph_AFIO, ENABLE);  //使能GPIO外设和AFIO复用功能模块时钟
 
   //设置该引脚为复用输出功能,输出TIM2 CH2的PWM脉冲波形	GPIOA.1
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1; //TIM2_CH2
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  //复用推挽输出
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOA, &GPIO_InitStructure);//初始化GPIO
	
	//初始化TIM2 Channel2 PWM模式	 
	TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //选择定时器模式:TIM脉冲宽度调制模式2
 	TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //比较输出使能
	TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //输出极性:TIM输出比较极性高
	TIM_OCInitStructure.TIM_Pulse = 0;
	TIM_OC2Init(TIM2, &TIM_OCInitStructure);  //根据T指定的参数初始化外设TIM2 OC2
	TIM_OC2PreloadConfig(TIM2, TIM_OCPreload_Enable);  //使能TIM2在CCR2上的预装载寄存器
	TIM_Cmd(TIM2, ENABLE);  //使能TIM2
	
	
	
	
	//PWMA PA2
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);	//使能定时器2时钟
 	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA  | RCC_APB2Periph_AFIO, ENABLE);  //使能GPIO外设和AFIO复用功能模块时钟
 
   //设置该引脚为复用输出功能,输出TIM2 CH3的PWM脉冲波形	GPIOA.2
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; //TIM2_CH3
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  //复用推挽输出
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOA, &GPIO_InitStructure);//初始化GPIO
	
	//初始化TIM2 Channel3 PWM模式	 
	TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //选择定时器模式:TIM脉冲宽度调制模式2
 	TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //比较输出使能
	TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //输出极性:TIM输出比较极性高
	TIM_OCInitStructure.TIM_Pulse = 0;
	TIM_OC3Init(TIM2, &TIM_OCInitStructure);  //根据T指定的参数初始化外设TIM2 OC3
	TIM_OC3PreloadConfig(TIM2, TIM_OCPreload_Enable);  //使能TIM2在CCR3上的预装载寄存器
	TIM_Cmd(TIM2, ENABLE);  //使能TIM2
	
	
	
	
	//PWMA PA3
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);	//使能定时器2时钟
 	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA  | RCC_APB2Periph_AFIO, ENABLE);  //使能GPIO外设和AFIO复用功能模块时钟
 
   //设置该引脚为复用输出功能,输出TIM2 CH4的PWM脉冲波形	GPIOA.3
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3; //TIM2_CH4
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  //复用推挽输出
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOA, &GPIO_InitStructure);//初始化GPIO
	
	//初始化TIM2 Channel4 PWM模式	 
	TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //选择定时器模式:TIM脉冲宽度调制模式2
 	TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //比较输出使能
	TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //输出极性:TIM输出比较极性高
	TIM_OCInitStructure.TIM_Pulse = 0;
	TIM_OC4Init(TIM2, &TIM_OCInitStructure);  //根据T指定的参数初始化外设TIM2 OC4
	TIM_OC4PreloadConfig(TIM2, TIM_OCPreload_Enable);  //使能TIM2在CCR4上的预装载寄存器
	TIM_Cmd(TIM2, ENABLE);  //使能TIM2

}

void TIM4_PWM_Init(u16 arr,u16 psc)
{  
	GPIO_InitTypeDef GPIO_InitStructure;
	TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
	TIM_OCInitTypeDef  TIM_OCInitStructure;
	
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);	//使能定时器3时钟
 
   //初始化TIM4
	TIM_TimeBaseStructure.TIM_Period = arr; //设置在下一个更新事件装入活动的自动重装载寄存器周期的值
	TIM_TimeBaseStructure.TIM_Prescaler = psc; //设置用来作为TIMx时钟频率除数的预分频值 
	TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //设置时钟分割:TDTS = Tck_tim
	TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIM向上计数模式
	TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位
	
	//PWMB PB6
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);	//使能定时器4时钟
 	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB  | RCC_APB2Periph_AFIO, ENABLE);  //使能GPIO外设和AFIO复用功能模块时钟
 
   //设置该引脚为复用输出功能,输出TIM4 CH1的PWM脉冲波形	GPIOB.6
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6; //TIM4_CH1
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  //复用推挽输出
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化GPIO
	
	//初始化TIM3 Channel1 PWM模式	 
	TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //选择定时器模式:TIM脉冲宽度调制模式2
 	TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //比较输出使能
	TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //输出极性:TIM输出比较极性高
	TIM_OCInitStructure.TIM_Pulse = 0;
	TIM_OC1Init(TIM4, &TIM_OCInitStructure);  //根据T指定的参数初始化外设TIM3 OC2
	TIM_OC1PreloadConfig(TIM4, TIM_OCPreload_Enable);  //使能TIM4在CCR2上的预装载寄存器
	TIM_Cmd(TIM4, ENABLE);  //使能TIM4
}

2. Set the duty cycle, multi-channel output pwm

 int main(void)
 {		
 
	delay_init();	    	 //延时函数初始化	  

	//TIM3_PWM_Init(24000,0);//不分频。PWM频率为7200000000/24000=3khz
	 TIM3_PWM_Init(24000,59);
	 TIM2_PWM_Init(24000,0);
	 TIM4_PWM_Init(24000,59);
   	while(1)
	{
		TIM_SetCompare2(TIM3,4000);//PA7
		TIM_SetCompare1(TIM3,9000);//PA6
		TIM_SetCompare3(TIM3,10000);//PB0
		TIM_SetCompare4(TIM3,15000);//PB1
		
		TIM_SetCompare1(TIM2,4000);//PA0
		TIM_SetCompare2(TIM2,9000);//PA1
		TIM_SetCompare3(TIM2,10000);//PA2
		TIM_SetCompare4(TIM2,15000);//PA3
		
		TIM_SetCompare1(TIM4,4000);//PB6
	}	 
}

Finally, attach source: https://download.csdn.net/download/weixin_39589455/10973032

[Log] stm32 develop multiple pwm implementation, 9-way pwm

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