#include "stm32f10x.h"
#include <stdio.h>
u16 CCR1_Val = 500;
u16 CCR2_Val = 375;
u16 CCR3_Val = 250;
u16 CCR4_Val = 125;
/*************************************************
函数: void RCC_Configuration(void)
参数: 无
返回: 无
**************************************************/
void RCC_Configuration(void)
{
ErrorStatus HSEStartUpStatus; //定义外部高速晶体启动状态枚举变量
RCC_DeInit(); //复位RCC外部设备寄存器到默认值
RCC_HSEConfig(RCC_HSE_ON); //打开外部高速晶振
HSEStartUpStatus = RCC_WaitForHSEStartUp(); //等待外部高速时钟准备好
if(HSEStartUpStatus == SUCCESS) //外部高速时钟已经准别好
{
FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable); //开启FLASH预读缓冲功能，加速FLASH的读取。所有程序中必须的用法.位置：RCC初始化子函数里面，时钟起
振之后
FLASH_SetLatency(FLASH_Latency_2); //flash操作的延时
RCC_HCLKConfig(RCC_SYSCLK_Div1); //配置AHB(HCLK)时钟等于==SYSCLK
RCC_PCLK2Config(RCC_HCLK_Div1); //配置APB2(PCLK2)钟==AHB时钟
RCC_PCLK1Config(RCC_HCLK_Div2); //配置APB1(PCLK1)钟==AHB1/2时钟
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9); //配置PLL时钟 == 外部高速晶体时钟 * 9 = 72MHz
RCC_PLLCmd(ENABLE); //使能PLL时钟
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET) //等待PLL时钟就绪
{伦敦铜
}
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK); //配置系统时钟 = PLL时钟
while(RCC_GetSYSCLKSource() != 0x08) //检查PLL时钟是否作为系统时钟
{
}
}
}
/*******************************************************************************
* Function Name : GPIO_Configuration
* Description : Configures the different GPIO ports.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
//RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOB , ENABLE); //使能GPIOAB外设模块时钟使能
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
唐璜情结
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8|GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13|GPIO_Pin_14;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);
}
/*******************************************************************************
* Function Name : TIM1
* Description : Configures the different GPIO ports.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void TIM1_Mode_Config(void)碧桂园ERP
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
TIM_BDTRInitTypeDef TIM_BDTRInitStructure;
lf398 RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
/* Time base configuration */
//当定时器从0计数到999，即为1000次，为一个定时周期
TIM_TimeBaseStructure.TIM_Period = 1000-1; //72000000/1000=72K
//设置预分频：不预分频，即为72MHz
TIM_TimeBaseStructure.TIM_Prescaler = 0;
TIM_TimeBaseStructure.TIM_ClockDivision = 0; //设置时钟分频系数：不分频
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //向上计数模式
第一个无产阶级政党 TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
TIM_ARRPreloadConfig(TIM1,ENABLE); //使能TIM1在ARR上的预装载寄存器
/* PWM1 Mode configuration: Channel1 */
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //配置为PWM模式1
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TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
//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_Pulse = CCR1_Val;
//当定时器计数值小于CCR1_Val时为高电平
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset;
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Reset;
TIM_OC1Init(TIM1, &TIM_OCInitStructure); //使能通道1
TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
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