此程序用stm32定时器，调节pwm，来控制电机的速度。
单片机源程序如下:
- #include "pwm.h"
- #include "stm32f10x_tim.h"
- #include "pbdata.h"
- void PWM_Init(void)
- {
-
-
- GPIO_InitTypeDef GPIO_InitStructure;
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3,ENABLE);
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);
- GPIO_InitStructure.GPIO_Pin=GPIO_Pin_6|GPIO_Pin_7;
- GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
- GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;
- GPIO_Init(GPIOA,&GPIO_InitStructure);
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE);
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3,ENABLE);
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);
- GPIO_InitStructure.GPIO_Pin=GPIO_Pin_0;
- GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
- GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;
- GPIO_Init(GPIOB,&GPIO_InitStructure);
-
- }
- unsigned char TIM3_Configuration(u16 pulse)
- {
- TIM_TimeBaseInitTypeDef TIM_TimeBaseStruct;
- TIM_OCInitTypeDef TIM_OCInitStructure;
- //GPIO_PinRemapConfig(GPIO_PartialRemap_TIM3,ENABLE);
- //定时器初始化
- TIM_DeInit(TIM3);
- TIM_TimeBaseStruct.TIM_Period=20000-1;//20000-1周期为20ms，因为寄存器要自加1，所以先减1
- TIM_TimeBaseStruct.TIM_Prescaler=72-1;//预分频
- TIM_TimeBaseStruct.TIM_ClockDivision=TIM_CKD_DIV1;
- TIM_TimeBaseStruct.TIM_CounterMode=TIM_CounterMode_Up;//向上
- TIM_TimeBaseInit(TIM3,&TIM_TimeBaseStruct);
-
- //pwm 初始化
- TIM_OCInitStructure.TIM_OCMode=TIM_OCMode_PWM1;
- TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable;
- TIM_OCInitStructure.TIM_Pulse=pulse; //高电平所占的时间
- TIM_OCInitStructure.TIM_OCPolarity=TIM_OCPolarity_High;
- TIM_OC1Init(TIM3,&TIM_OCInitStructure);
- TIM_OC1PreloadConfig(TIM3,TIM_OCPreload_Enable);
- TIM_Cmd(TIM3,ENABLE);
- return pulse;
- }
- unsigned char TIM3A_Configuration(u16 pulse1)
- {
- TIM_TimeBaseInitTypeDef TIM_TimeBaseStruct;
- TIM_OCInitTypeDef TIM_OCInitStructure;
- // GPIO_PinRemapConfig(GPIO_PartialRemap_TIM3,ENABLE);
- //定时器初始化
- TIM_DeInit(TIM3);
- TIM_TimeBaseStruct.TIM_Period=20000-1;//20000-1周期为20ms，因为寄存器要自加1，所以先减1
- TIM_TimeBaseStruct.TIM_Prescaler=72-1;//预分频
- TIM_TimeBaseStruct.TIM_ClockDivision=TIM_CKD_DIV1;
- TIM_TimeBaseStruct.TIM_CounterMode=TIM_CounterMode_Up;//向上
- TIM_TimeBaseInit(TIM3,&TIM_TimeBaseStruct);
-
- //pwm 初始化
- TIM_OCInitStructure.TIM_OCMode=TIM_OCMode_PWM1;
- TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable;
- TIM_OCInitStructure.TIM_Pulse=pulse1; //高电平所占的时间
- TIM_OCInitStructure.TIM_OCPolarity=TIM_OCPolarity_High;
- TIM_OC2Init(TIM3,&TIM_OCInitStructure);
- TIM_OC2PreloadConfig(TIM3,TIM_OCPreload_Enable);
- TIM_Cmd(TIM3,ENABLE);
- return pulse1;
- }
- unsigned char TIM3DIANTIAO1_Config(u16 diantiao_pulse)
- {
- TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
- TIM_OCInitTypeDef TIM_OCInitStructure;
- TIM_TimeBaseStructure.TIM_Period = 19999; //当定时器从0计数到999，即为1000次，为一个定时周期
- TIM_TimeBaseStructure.TIM_Prescaler = 71; //设置预分频：不预分频，即为72MHz
- TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1 ; //设置时钟分频系数：不分频
- TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //向上计数模式
- TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
- TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //配置为PWM模式1
- TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
- TIM_OCInitStructure.TIM_Pulse = diantiao_pulse; //设置跳变值，当计数器计数到这个值时，电平发生跳变
- TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //当定时器计数值小于CCR1_Val时为高电平
- TIM_OC3Init(TIM3, &TIM_OCInitStructure); //使能通道3
- TIM_OC3PreloadConfig(TIM3, TIM_OCPreload_Enable);
- TIM_ARRPreloadConfig(TIM3, ENABLE); // 使能TIM3重载寄存器ARR
- TIM_Cmd(TIM3, ENABLE);
-
- return diantiao_pulse;
- }
所有资料51hei提供下载:
Keil代码 舵机，电调，电机三合一.7z
(191.09 KB, 下载次数: 77)
|
