PWM DAC 用按键控制LED灯呼吸
时间:10-02
整理:3721RD
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#include "stm32f10x.h"
#include <stdio.h>
#include "stm32f10x_usart.h"
#include "stm32f10x_it.h"
/********************************/
void Delay (u32 nCount)
{
for(; nCount != 0; nCount--);
}
/************************************************/
/*****************'?ú×ó3ìDò*********************/
void GPIO_Configuration()
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1,ENABLE);
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;
GPIO_Init(GPIOA,&GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA,&GPIO_InitStructure);
USART_InitStructure.USART_BaudRate=115200;
USART_InitStructure.USART_WordLength=USART_WordLength_8b;
USART_InitStructure.USART_StopBits=USART_StopBits_1;
USART_InitStructure.USART_Parity=USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl=USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode=USART_Mode_Rx | USART_Mode_Tx;
USART_Init(USART1,&USART_InitStructure);
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
USART_Cmd(USART1,ENABLE);
USART_ClearFlag(USART1,USART_FLAG_TC);
}
int fputc(int ch, FILE *f)
{
USART_SendData(USART1, (uint8_t) ch);
while (USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
return (ch);
}
/************************************************/
/******************°'?ü×ó3ìDò********************/
void KEY_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE,ENABLE);
GPIO_InitStructure.GPIO_Pin =GPIO_Pin_3|GPIO_Pin_4;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(GPIOE, &GPIO_InitStructure);
GPIO_SetBits(GPIOA,GPIO_Pin_13);
GPIO_SetBits(GPIOA,GPIO_Pin_15);
}
void led()
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE,ENABLE);
GPIO_InitStructure.GPIO_Pin =GPIO_Pin_5;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
GPIO_Init(GPIOE, &GPIO_InitStructure);
GPIO_SetBits(GPIOE,GPIO_Pin_5);
}
/************************************************/
/*************ADC×ó3ìDò**************/
void Adc_Init(void)
{
ADC_InitTypeDef ADC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA |RCC_APB2Periph_ADC1 , ENABLE );
RCC_ADCCLKConfig(RCC_PCLK2_Div6);
GPIO_InitStructure.GPIO_Pin =GPIO_Pin_1;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOA, &GPIO_InitStructure);
ADC_DeInit(ADC1);
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_ScanConvMode = DISABLE;
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 1;
ADC_Init(ADC1, &ADC_InitStructure);
ADC_Cmd(ADC1, ENABLE);
ADC_ResetCalibration(ADC1);
while(ADC_GetResetCalibrationStatus(ADC1));
ADC_StartCalibration(ADC1);
while(ADC_GetCalibrationStatus(ADC1));
}
u16 Get_Adc(u8 ch)
{
ADC_RegularChannelConfig(ADC1, ch, 1, ADC_SampleTime_55Cycles5 );
ADC_SoftwareStartConvCmd(ADC1, ENABLE);
while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC ));
return ADC_GetConversionValue(ADC1);
}
u16 Get_Adc_Average(u8 ch,u8 times)
{
u32 temp_val=0;
u8 t;
for(t=0;t<times;t++)
{ temp_val+=Get_Adc(ch);
Delay (2);
}
return temp_val/times;
}
/************************************/
void TIM1_PWM_Init()
{
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
TIM_TimeBaseStructure.TIM_Period = 255;
TIM_TimeBaseStructure.TIM_Prescaler =0;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 0;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
TIM_OC1Init(TIM1, &TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);
TIM_ARRPreloadConfig(TIM1, ENABLE);
TIM_CtrlPWMOutputs(TIM1,ENABLE);
TIM_Cmd(TIM1, ENABLE);
}
void PWM_DAC_Set(u16 vol)
{
float temp=vol;
temp/=100;
temp=temp*256/3.3;
TIM_SetCompare1(TIM1,temp);
}
/************************************/
int main()
{
u16 i=0;
float temp; float temp1;
float adcx; float adcx1;
GPIO_Configuration();
Adc_Init();
KEY_Init();
led();
TIM1_PWM_Init();
TIM_SetCompare1(TIM1,100);
TIM_SetCompare1(TIM1,i);
printf("\nzhun bei jiu xu\n");
while(1)
{
if(GPIO_ReadInputDataBit(GPIOE,GPIO_Pin_4)==0)
{
Delay(150000);
if(GPIO_ReadInputDataBit(GPIOE,GPIO_Pin_4)==0)
{
i=i+10;
TIM_SetCompare1(TIM1,i);
adcx1=TIM_GetCapture1(TIM1);
adcx=Get_Adc_Average(ADC_Channel_1,20);
temp1=(float)adcx1*(3.3/256);
temp=(float)adcx*(3.3/4096);
printf("\n adcx1 =%0.3f temp1 = %0.3f V ::: adcx =%0.3f temp = %0.3f V\n",adcx1,temp1,adcx,temp);
Delay (0xffff8);Delay (0xffff8);Delay (0xffff8);
if(i>=240)
{
i=10;
}
}
}
else if(GPIO_ReadInputDataBit(GPIOE,GPIO_Pin_3)==0)
{
Delay(150000);
if(GPIO_ReadInputDataBit(GPIOE,GPIO_Pin_3)==0)
{
if(i>0)
{
i=i-10;
TIM_SetCompare1(TIM1,i);
adcx1=TIM_GetCapture1(TIM1);
adcx=Get_Adc_Average(ADC_Channel_1,20);
temp1=(float)adcx1*(3.3/256);
temp=(float)adcx*(3.3/4096);
printf("\n adcx1 =%0.3f temp1 = %0.3f V ::: adcx =%0.3f temp = %0.3f V\n",adcx1,temp1,adcx,temp);
Delay (0xffff8);Delay (0xffff8);Delay (0xffff8);
if(i<=10)
{
i=240;
}
}
}
}
}
}
#include <stdio.h>
#include "stm32f10x_usart.h"
#include "stm32f10x_it.h"
/********************************/
void Delay (u32 nCount)
{
for(; nCount != 0; nCount--);
}
/************************************************/
/*****************'?ú×ó3ìDò*********************/
void GPIO_Configuration()
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1,ENABLE);
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;
GPIO_Init(GPIOA,&GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA,&GPIO_InitStructure);
USART_InitStructure.USART_BaudRate=115200;
USART_InitStructure.USART_WordLength=USART_WordLength_8b;
USART_InitStructure.USART_StopBits=USART_StopBits_1;
USART_InitStructure.USART_Parity=USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl=USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode=USART_Mode_Rx | USART_Mode_Tx;
USART_Init(USART1,&USART_InitStructure);
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
USART_Cmd(USART1,ENABLE);
USART_ClearFlag(USART1,USART_FLAG_TC);
}
int fputc(int ch, FILE *f)
{
USART_SendData(USART1, (uint8_t) ch);
while (USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
return (ch);
}
/************************************************/
/******************°'?ü×ó3ìDò********************/
void KEY_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE,ENABLE);
GPIO_InitStructure.GPIO_Pin =GPIO_Pin_3|GPIO_Pin_4;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(GPIOE, &GPIO_InitStructure);
GPIO_SetBits(GPIOA,GPIO_Pin_13);
GPIO_SetBits(GPIOA,GPIO_Pin_15);
}
void led()
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE,ENABLE);
GPIO_InitStructure.GPIO_Pin =GPIO_Pin_5;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
GPIO_Init(GPIOE, &GPIO_InitStructure);
GPIO_SetBits(GPIOE,GPIO_Pin_5);
}
/************************************************/
/*************ADC×ó3ìDò**************/
void Adc_Init(void)
{
ADC_InitTypeDef ADC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA |RCC_APB2Periph_ADC1 , ENABLE );
RCC_ADCCLKConfig(RCC_PCLK2_Div6);
GPIO_InitStructure.GPIO_Pin =GPIO_Pin_1;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOA, &GPIO_InitStructure);
ADC_DeInit(ADC1);
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_ScanConvMode = DISABLE;
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 1;
ADC_Init(ADC1, &ADC_InitStructure);
ADC_Cmd(ADC1, ENABLE);
ADC_ResetCalibration(ADC1);
while(ADC_GetResetCalibrationStatus(ADC1));
ADC_StartCalibration(ADC1);
while(ADC_GetCalibrationStatus(ADC1));
}
u16 Get_Adc(u8 ch)
{
ADC_RegularChannelConfig(ADC1, ch, 1, ADC_SampleTime_55Cycles5 );
ADC_SoftwareStartConvCmd(ADC1, ENABLE);
while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC ));
return ADC_GetConversionValue(ADC1);
}
u16 Get_Adc_Average(u8 ch,u8 times)
{
u32 temp_val=0;
u8 t;
for(t=0;t<times;t++)
{ temp_val+=Get_Adc(ch);
Delay (2);
}
return temp_val/times;
}
/************************************/
void TIM1_PWM_Init()
{
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
TIM_TimeBaseStructure.TIM_Period = 255;
TIM_TimeBaseStructure.TIM_Prescaler =0;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 0;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
TIM_OC1Init(TIM1, &TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);
TIM_ARRPreloadConfig(TIM1, ENABLE);
TIM_CtrlPWMOutputs(TIM1,ENABLE);
TIM_Cmd(TIM1, ENABLE);
}
void PWM_DAC_Set(u16 vol)
{
float temp=vol;
temp/=100;
temp=temp*256/3.3;
TIM_SetCompare1(TIM1,temp);
}
/************************************/
int main()
{
u16 i=0;
float temp; float temp1;
float adcx; float adcx1;
GPIO_Configuration();
Adc_Init();
KEY_Init();
led();
TIM1_PWM_Init();
TIM_SetCompare1(TIM1,100);
TIM_SetCompare1(TIM1,i);
printf("\nzhun bei jiu xu\n");
while(1)
{
if(GPIO_ReadInputDataBit(GPIOE,GPIO_Pin_4)==0)
{
Delay(150000);
if(GPIO_ReadInputDataBit(GPIOE,GPIO_Pin_4)==0)
{
i=i+10;
TIM_SetCompare1(TIM1,i);
adcx1=TIM_GetCapture1(TIM1);
adcx=Get_Adc_Average(ADC_Channel_1,20);
temp1=(float)adcx1*(3.3/256);
temp=(float)adcx*(3.3/4096);
printf("\n adcx1 =%0.3f temp1 = %0.3f V ::: adcx =%0.3f temp = %0.3f V\n",adcx1,temp1,adcx,temp);
Delay (0xffff8);Delay (0xffff8);Delay (0xffff8);
if(i>=240)
{
i=10;
}
}
}
else if(GPIO_ReadInputDataBit(GPIOE,GPIO_Pin_3)==0)
{
Delay(150000);
if(GPIO_ReadInputDataBit(GPIOE,GPIO_Pin_3)==0)
{
if(i>0)
{
i=i-10;
TIM_SetCompare1(TIM1,i);
adcx1=TIM_GetCapture1(TIM1);
adcx=Get_Adc_Average(ADC_Channel_1,20);
temp1=(float)adcx1*(3.3/256);
temp=(float)adcx*(3.3/4096);
printf("\n adcx1 =%0.3f temp1 = %0.3f V ::: adcx =%0.3f temp = %0.3f V\n",adcx1,temp1,adcx,temp);
Delay (0xffff8);Delay (0xffff8);Delay (0xffff8);
if(i<=10)
{
i=240;
}
}
}
}
}
}