STM32F103ZET6的TIM4完全映像问题

朱文杰 · 发表于 2022-5-17 11:27:57

想要用TIM4的4路PWM 使用重映像功能我是跟按照TIM3配置的以下是TIM3和TIM4的代码 TIM3 可以实现配合L298N驱动两个风扇转速调节但是TIM4不可以不能调速，帮忙看看问题出在哪
void TIM4_PWMOUT_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TIM4时钟
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO,ENABLE);
//①使能 GPIO 和 AFIO 复用功能时钟
GPIO_PinRemapConfig(GPIO_Remap_TIM4, ENABLE);
//②完全重映射让原来的 CH1 B6->D12
//CH2 B7->D13
//CH3 B8->D14
//CH4 B9->D15
// 配置GPIOD12、D13、D14、D15
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12 | GPIO_Pin_13| GPIO_Pin_14| GPIO_Pin_15;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOD,&GPIO_InitStructure);

// 初始化TIM4
TIM_TimeBaseStructure.TIM_Period = arr; //设置在自动重装载周期值
TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置预分频值
TIM_TimeBaseStructure.TIM_ClockDivision = 0; //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); //③初始化 TIMx

//初始化 TIM4 Channel2 PWM 模式
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2; //选择 PWM 模式 2
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //比较输出使能
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //输出极性高
TIM_OC1Init(TIM4, &TIM_OCInitStructure); //通道1
TIM_OC2Init(TIM4, &TIM_OCInitStructure); //④初始化外设 TIM4 OC1 OC2
TIM_OC3Init(TIM4, &TIM_OCInitStructure); //
TIM_OC4Init(TIM4, &TIM_OCInitStructure); //④初始化外设 TIM4 OC1 OC2 OC3 OC4

TIM_OC1PreloadConfig(TIM4, TIM_OCPreload_Enable);
TIM_OC2PreloadConfig(TIM4, TIM_OCPreload_Enable); //使能预装载寄存器
TIM_OC3PreloadConfig(TIM4, TIM_OCPreload_Enable);
TIM_OC4PreloadConfig(TIM4, TIM_OCPreload_Enable); //使能预装载寄存器
TIM_Cmd(TIM4, ENABLE); //⑤使能 TIM4

TIM_SetCompare1(TIM4,10000);
TIM_SetCompare2(TIM4,10000);
TIM_SetCompare3(TIM4,10000);
TIM_SetCompare4(TIM4,10000); // ⑥上电后停转
}

朱文杰 · 发表于 2022-5-17 11:28:37

void TIM3_PWMOUT_Init(u16 arr,u16 psc)
{
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);

// 配置GPIOA7A6
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA,&GPIO_InitStructure);

// 配置GPIOB0B1
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB,&GPIO_InitStructure);

// 初始化TIM3
TIM_TimeBaseStructure.TIM_Period = arr; //设置在自动重装载周期值
TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置预分频值
TIM_TimeBaseStructure.TIM_ClockDivision = 0; //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); //③初始化 TIMx

//初始化 TIM3 Channel2 PWM 模式
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2; //选择 PWM 模式 2
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //比较输出使能
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //输出极性高
TIM_OC1Init(TIM3, &TIM_OCInitStructure); //通道1
TIM_OC2Init(TIM3, &TIM_OCInitStructure); //④初始化外设 TIM3 OC1 OC2
TIM_OC3Init(TIM3, &TIM_OCInitStructure); //
TIM_OC4Init(TIM3, &TIM_OCInitStructure); //④初始化外设 TIM3 OC1 OC2 OC3 OC4

TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Enable);
TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Enable); //使能预装载寄存器
TIM_OC3PreloadConfig(TIM3, TIM_OCPreload_Enable);
TIM_OC4PreloadConfig(TIM3, TIM_OCPreload_Enable); //使能预装载寄存器
TIM_Cmd(TIM3, ENABLE); //⑤使能 TIM3

TIM_SetCompare1(TIM3,10000);
TIM_SetCompare2(TIM3,10000);
TIM_SetCompare3(TIM3,10000);
TIM_SetCompare4(TIM3,10000); // ⑥上电后停转
}