MM32G0001配置PWM

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tpgf|

楼主 | 2025-4-10 13:57 | 只看该作者回帖奖励

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PWM, MM32G0001, TI, ST, IO

void TIM3_Configure(void)
{
GPIO_InitTypeDef       GPIO_InitStruct;
TIM_OCInitTypeDef    TIM_OCInitStruct;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStruct;

/* Compute the value to be set in ARR regiter to generate signal frequency at 100 Khz */
uint32_t TimerPeriod = (TIM_GetTIMxClock(TIM1) / 100000 ) - 1;

/* Compute CCR1 value to generate a duty cycle at 80% for channel 1 */
uint32_t Channel1Pulse = ((uint32_t)800 * (TimerPeriod - 1)) / 1000;//设置占空比，可以自己直接赋值

RCC_APB1PeriphClockCmd(RCC_APB1ENR_TIM3, ENABLE);

TIM_TimeBaseStructInit(&TIM_TimeBaseStruct);
TIM_TimeBaseStruct.TIM_Prescaler       = 0;
TIM_TimeBaseStruct.TIM_CounterMode    = TIM_CounterMode_Up;
TIM_TimeBaseStruct.TIM_Period          = TimerPeriod;
TIM_TimeBaseStruct.TIM_ClockDivision    = TIM_CKD_Div1;
TIM_TimeBaseStruct.TIM_RepetitionCounter = 0;
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStruct);

TIM_OCStructInit(&TIM_OCInitStruct);
TIM_OCInitStruct.TIM_OCMode    = TIM_OCMode_PWM1;
TIM_OCInitStruct.TIM_OutputState  = TIM_OutputState_Enable;
TIM_OCInitStruct.TIM_Pulse       = 0;
TIM_OCInitStruct.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OCInitStruct.TIM_OCIdleState  = TIM_OCIdleState_Set;

TIM_OCInitStruct.TIM_Pulse = Channel1Pulse;//占空比
TIM_OC1Init(TIM3, &TIM_OCInitStruct);

RCC_AHBPeriphClockCmd(RCC_AHBENR_GPIOA, ENABLE);

GPIO_PinAFConfig(GPIOA, GPIO_PinSource11, GPIO_AF_4);  /* TIM3_CH1  */
                                                         //这里根据手册的引脚复用图选择第三个参数，这里是第四复用功能

GPIO_StructInit(&GPIO_InitStruct);
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_11;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_High;
GPIO_InitStruct.GPIO_Mode  = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStruct);

TIM_Cmd(TIM3, ENABLE);

TIM_CtrlPWMOutputs(TIM3, ENABLE);//使能PWM输出
}

MM32和STM32配置PWM差不多，除了引脚复用和最后的PWM输出使能有所区别,其他基本一样。
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                        版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。

原文链接：https://blog.csdn.net/weixin_74242699/article/details/147113544

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