014_STM32程序移植之_L298N电机驱动模块

视频演示地址：https://v.qq.com/x/page/d0766ufjnl4.html

#include “PWM_Config.h“
void PWM_Config（u8 CCR1_Valu8 CCR2_Val）
{
  TIM_TimebaseInitTypeDef  TIM_TimebaseStructure;
	TIM_OCInitTypeDef  TIM_OCInitStructure;
	
  TIM_TimebaseStructure.TIM_Period = 255;       //5及为2.5ms为一个定时周期
  TIM_TimebaseStructure.TIM_Prescaler = 36000;	    //设置预分频：不预分频，即为36MHz
  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_OCPolarity = TIM_OCPolarity_High;  //当定时器计数值小于CCR1_Val时为高电平
	
	TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;	
  TIM_OCInitStructure.TIM_Pulse = CCR1_Val;	   //设置跳变值，当计数器计数到这个值时，电平发生跳变
  TIM_OC1Init（TIM3 &TIM_OCInitStructure）;	 //使能通道1
  TIM_OC1PreloadConfig（TIM3 TIM_OCPreload_Enable）;


  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_Pulse = CCR2_Val;	  //设置通道2的电平跳变值，输出另外一个占空比的PWM
  TIM_OC2Init（TIM3 &TIM_OCInitStructure）;	  //使能通道2
  TIM_OC2PreloadConfig（TIM3 TIM_OCPreload_Enable）;
	
  TIM_ARRPreloadConfig（TIM3 ENABLE）;			 // 使能TIM3重载寄存器ARR
  TIM_Cmd（TIM3 ENABLE）;                   //使能定时器3	
}

void PWM_GPIO_Config（void）
{
  GPIO_InitTypeDef GPIO_InitStructure;
  RCC_APB1PeriphClockCmd（RCC_APB1Periph_TIM3 ENABLE）; 
  RCC_APB2PeriphClockCmd（RCC_APB2Periph_GPIOA  ENABLE）; 
	RCC_APB2PeriphClockCmd（RCC_APB2Periph_GPIOB ENABLE）;	 //使能PBPE端口时钟

  GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_6 | GPIO_Pin_7;
  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）;
		
 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5;				 //LED0-->PB.5 端口配置
 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; 		 //推挽输出
 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;		 //IO口速度为50MHz
 GPIO_Init（GPIOA &GPIO_InitStructure）;					 //根据设定参数初始化GPIOB.5
 GPIO_ResetBits（GPIOAGPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5）;						 //PB.5 输出高
	
}	



void PWM_INIT（void）
{	
		PWM_GPIO_Config（）;
		/*最大255，控制PWM的输出，第一个是马达A，第二个是马达B*/
	  /*更改PWM，以后再调用这一条就行了，就能改变速度了*/
		PWM_Config（255255）;
	
		IN1 = 1;	
	  IN2 = 1;	
	  IN3 = 1;	
	  IN4 = 1;
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     文件      482425  2018-10-26 15:37  read_me.pdf
     目录           0  2018-10-26 14:48  源码\
     目录           0  2018-10-26 14:48  源码\PWM_Config\
     文件        2569  2018-10-26 14:46  源码\PWM_Config\PWM_Config.c
     文件         283  2018-10-26 14:36  源码\PWM_Config\PWM_Config.h
     目录           0  2018-10-26 14:48  源码\STM32规范化PRINTF\
     目录           0  2018-10-26 14:48  源码\STM32规范化PRINTF\CMSIS\
     文件       17273  2010-06-07 10:25  源码\STM32规范化PRINTF\CMSIS\core_cm3.c
     文件       85714  2011-02-09 14:59  源码\STM32规范化PRINTF\CMSIS\core_cm3.h
     目录           0  2018-10-26 14:48  源码\STM32规范化PRINTF\CMSIS\startup\
     目录           0  2018-10-26 14:48  源码\STM32规范化PRINTF\CMSIS\startup\TrueSTUDIO\
     文件       12604  2011-03-10 10:54  源码\STM32规范化PRINTF\CMSIS\startup\TrueSTUDIO\startup_stm32f10x_cl.s
     文件       12592  2011-03-10 10:53  源码\STM32规范化PRINTF\CMSIS\startup\TrueSTUDIO\startup_stm32f10x_hd.s
     文件       12239  2011-03-10 10:53  源码\STM32规范化PRINTF\CMSIS\startup\TrueSTUDIO\startup_stm32f10x_hd_vl.s
     文件        9826  2011-03-10 10:53  源码\STM32规范化PRINTF\CMSIS\startup\TrueSTUDIO\startup_stm32f10x_ld.s
     文件       10275  2011-03-10 10:53  源码\STM32规范化PRINTF\CMSIS\startup\TrueSTUDIO\startup_stm32f10x_ld_vl.s
     文件       10275  2011-03-10 10:53  源码\STM32规范化PRINTF\CMSIS\startup\TrueSTUDIO\startup_stm32f10x_md.s
     文件       10757  2011-03-10 10:53  源码\STM32规范化PRINTF\CMSIS\startup\TrueSTUDIO\startup_stm32f10x_md_vl.s
     文件       13252  2011-03-10 10:53  源码\STM32规范化PRINTF\CMSIS\startup\TrueSTUDIO\startup_stm32f10x_xl.s
     目录           0  2018-10-26 14:48  源码\STM32规范化PRINTF\CMSIS\startup\arm\
     文件       15766  2011-03-10 10:52  源码\STM32规范化PRINTF\CMSIS\startup\arm\startup_stm32f10x_cl.s
     文件       15503  2011-03-10 10:52  源码\STM32规范化PRINTF\CMSIS\startup\arm\startup_stm32f10x_hd.s
     文件       15692  2011-03-10 10:52  源码\STM32规范化PRINTF\CMSIS\startup\arm\startup_stm32f10x_hd_vl.s
     文件       12376  2011-03-10 10:52  源码\STM32规范化PRINTF\CMSIS\startup\arm\startup_stm32f10x_ld.s
     文件       13656  2011-03-10 10:52  源码\STM32规范化PRINTF\CMSIS\startup\arm\startup_stm32f10x_ld_vl.s
     文件       12765  2011-03-10 10:52  源码\STM32规范化PRINTF\CMSIS\startup\arm\startup_stm32f10x_md.s
     文件       14073  2011-03-10 10:51  源码\STM32规范化PRINTF\CMSIS\startup\arm\startup_stm32f10x_md_vl.s
     文件       15955  2011-03-10 10:51  源码\STM32规范化PRINTF\CMSIS\startup\arm\startup_stm32f10x_xl.s
     目录           0  2018-10-26 14:48  源码\STM32规范化PRINTF\CMSIS\startup\gcc_ride7\
     文件       13072  2011-03-10 10:52  源码\STM32规范化PRINTF\CMSIS\startup\gcc_ride7\startup_stm32f10x_cl.s
     文件       13160  2011-03-10 10:52  源码\STM32规范化PRINTF\CMSIS\startup\gcc_ride7\startup_stm32f10x_hd.s
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