STM32F103C8T6:
stm32的pwm输出只要设置好在主循环前调用一次即可， 对用的IO就可以持续的输出PWM
TIM4配置PWM过程程序：
J-LINK仿真配置 1. 选择“ Options for Target” 选项
2. 在“ Debug” 中选择“Use Simulator" 注意下面的配置
3. 配置好编译下
4. 选择Debug模式调试
5. 进入Debug模式后选择
6. 配置pwm输出引脚
配置好输出引脚直接”close“掉 7. 开始仿真运行
贴一下程序记录下：
- /*
- //TIM4 CH1 PWM 输出设置
- //PWM 输出初始化
- //arr：自动重装值
- //psc：时钟预分频数
- STM32F103C8T6
- PB6 - TIM4_CH1
- PB7 - TIM4_CH2
- PB8 - TIM4_CH3
- PB9 - TIM4_CH4
- */
- 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 TIMx 外设
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); //使能 PB 时钟
- TIM_DeInit(TIM4);
-
- //设置该引脚为复用输出功能,输出 TIM4 CH1 的 PWM 脉冲波形
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9; //TIM4_CH1
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用功能输出
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_Init(GPIOB, &GPIO_InitStructure); //初始化 GPIO
-
- TIM_TimeBaseStructure.TIM_Period = arr; //设置自动重装载周期值
- TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置预分频值 不分频
- TIM_TimeBaseStructure.TIM_ClockDivision = 0; //设置时钟分割:TDTS = Tck_tim
- TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //向上计数
- TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure); //初始化 TIMx
-
-
- TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2; //CH1 PWM2 模式
- TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //比较输出使能
- TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Disable;
-
-
- TIM_OCInitStructure.TIM_Pulse = 200; //设置待装入捕获比较寄存器的脉冲值
- TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //OC1 高电平有效
- TIM_OC1Init(TIM4, &TIM_OCInitStructure); //根据指定的参数初始化外设 TIMx
- TIM_OC2PreloadConfig(TIM4, TIM_OCPreload_Enable); //CH1 预装载使能
-
-
- TIM_OCInitStructure.TIM_Pulse = 400; //设置待装入捕获比较寄存器的脉冲值
- TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //OC2 高电平有效
- TIM_OC2Init(TIM4, &TIM_OCInitStructure); //根据指定的参数初始化外设 TIMx
- TIM_OC2PreloadConfig(TIM4, TIM_OCPreload_Enable); //CH2 预装载使能
-
-
- TIM_OCInitStructure.TIM_Pulse = 600; //设置待装入捕获比较寄存器的脉冲值
- TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //OC1 高电平有效
- TIM_OC3Init(TIM4, &TIM_OCInitStructure); //根据指定的参数初始化外设 TIMx
- TIM_OC3PreloadConfig(TIM4, TIM_OCPreload_Enable); //CH3 预装载使能
-
-
- TIM_OCInitStructure.TIM_Pulse = 800; //设置待装入捕获比较寄存器的脉冲值
- TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //OC1 高电平有效
- TIM_OC4Init(TIM4, &TIM_OCInitStructure); //根据指定的参数初始化外设 TIMx
- TIM_OC4PreloadConfig(TIM4, TIM_OCPreload_Enable); //CH4 预装载使能
-
-
- TIM_ARRPreloadConfig(TIM4, ENABLE); //使能 TIMx 在 ARR 上的预装载寄存器
- // TIM_CtrlPWMOutputs(TIM4,ENABLE); //MOE 主输出使能,高级定时器必须开启
- TIM_Cmd(TIM4, ENABLE); //使能 TIMx
- }
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