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下載到單片機里燈閃一下就滅了，不知道是什么原因main.c
#include "led.h"
#include "delay.h"
#include "sys.h"
#include "adc.h"
#include "lsens.h"
#include "timer.h"
u8 adcx=0; //光敏傳感器ADC轉(zhuǎn)換值
int main(void)
{
delay_init(); //延時函數(shù)初始化
LED_Init(); //初始化與LED連接的硬件接口
Lsens_Init(); //初始化光敏傳感器
TIM3_PWM_Init(100,0);
TIM4_Int_Init(1999,35999);
while(1)
{
adcx=Lsens_Get_Val();
if((adcx>0)&&(adcx<=20)) //當(dāng)前環(huán)境亮度小于20，燈光亮度調(diào)至最高的第五檔
{
TIM_SetCompare2(TIM3,100);
delay_ms(10);
}
if((adcx>20)&&(adcx<=40)) //當(dāng)前環(huán)境亮度小于40大于20，燈光亮度調(diào)至第四檔
{
TIM_SetCompare2(TIM3,80);
delay_ms(10);
}
if((adcx>40)&&(adcx<=60)) //當(dāng)前環(huán)境亮度小于60大于40，燈光亮度調(diào)至第三檔
{
TIM_SetCompare2(TIM3,60);
delay_ms(10);
}
if((adcx>60)&&(adcx<=80)) //當(dāng)前環(huán)境亮度小于80大于60，燈光亮度調(diào)至第二檔
{
TIM_SetCompare2(TIM3,40);
delay_ms(10);
}
if((adcx>80)&&(adcx<=95)) //當(dāng)前環(huán)境亮度小于95大于80，燈光亮度調(diào)至第一檔
{
TIM_SetCompare2(TIM3,20);
delay_ms(10);
}
if((adcx>95)&&(adcx<=100)) //當(dāng)前環(huán)境亮度小于100大于95，關(guān)閉燈光
{
TIM_SetCompare2(TIM3,0);
delay_ms(10);
}
}
}
adc.c
#include "delay.h"
#include "sys.h"
//初始化ADC1
void Adc1_Init(void)
{
ADC_InitTypeDef ADC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 , ENABLE ); //使能ADC1通道時鐘
RCC_APB2PeriphResetCmd(RCC_APB2Periph_ADC1,ENABLE);//ADC復(fù)位
RCC_APB2PeriphResetCmd(RCC_APB2Periph_ADC1,DISABLE);//復(fù)位結(jié)束
ADC_DeInit(ADC1); //復(fù)位ADC1,將外設(shè) ADC1的全部寄存器重設(shè)為缺省值
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent; //ADC工作模式: 獨立模式
ADC_InitStructure.ADC_ScanConvMode = DISABLE; //模數(shù)轉(zhuǎn)換工作在單通道模式
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE; //模數(shù)轉(zhuǎn)換工作在單次轉(zhuǎn)換模式
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None; //轉(zhuǎn)換由軟件而不是外部觸發(fā)啟動
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right; //ADC數(shù)據(jù)右對齊
ADC_InitStructure.ADC_NbrOfChannel = 1; //順序進(jìn)行規(guī)則轉(zhuǎn)換的ADC通道的數(shù)目
ADC_Init(ADC1, &ADC_InitStructure); //根據(jù)ADC_InitStruct中指定的參數(shù)初始化外設(shè)ADCx的寄存器
ADC_Cmd(ADC1, ENABLE); //使能指定的ADC1
ADC_ResetCalibration(ADC1); //使能復(fù)位校準(zhǔn)
while(ADC_GetResetCalibrationStatus(ADC1)); //等待復(fù)位校準(zhǔn)結(jié)束
ADC_StartCalibration(ADC1); //開啟AD校準(zhǔn)
while(ADC_GetCalibrationStatus(ADC1)); //等待校準(zhǔn)結(jié)束
}
//獲得ADC1某個通道的值
//ch:通道值 0~16
//返回值:轉(zhuǎn)換結(jié)果
u16 Get_Adc1(u8 ch)
{
//設(shè)置指定ADC的規(guī)則組通道，一個序列，采樣時間
ADC_RegularChannelConfig(ADC1,ch,1, ADC_SampleTime_239Cycles5 ); //ADC1,ADC通道,采樣時間為239.5周期
ADC_SoftwareStartConvCmd(ADC1, ENABLE); //使能指定的ADC1的軟件轉(zhuǎn)換啟動功能
while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC ));//等待轉(zhuǎn)換結(jié)束
return ADC_GetConversionValue(ADC1); //返回最近一次ADC1規(guī)則組的轉(zhuǎn)換結(jié)果
}
lsens.c光敏電阻
#include "lsens.h"
#include "delay.h"
//初始化光敏傳感器
void Lsens_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);//使能PORTF時鐘
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;//PF8 anolog輸入
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN; //模擬輸入引腳
GPIO_Init(GPIOA, &GPIO_InitStructure);
Adc1_Init();
}
//讀取Light Sens的值
//0~100:0,最暗;100,最亮
u8 Lsens_Get_Val(void)
{
u32 temp_val=0;
u8 t;
for(t=0;t<LSENS_READ_TIMES;t++)
{
temp_val+=Get_Adc1(LSENS_ADC_CHX); //讀取ADC值
delay_ms(5);
}
temp_val/=LSENS_READ_TIMES;//得到平均值
if(temp_val>4000)temp_val=4000;
return (u8)(100-(temp_val/40));
}
timer.c
#include "timer.h"
#include "led.h"
#include "usart.h"
#include "lsens.h"
#include "adc.h"
#include "lsens.h"
//通用定時器3中斷初始化
//這里時鐘選擇為APB1的2倍，而APB1為36M
//arr：自動重裝值。
//psc：時鐘預(yù)分頻數(shù)
void TIM3_Int_Init(u16 arr,u16 psc)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); //時鐘使能
TIM_TimeBaseStructure.TIM_Period = arr; //設(shè)置在下一個更新事件裝入活動的自動重裝載寄存器周期的值 計數(shù)到5000為500ms
TIM_TimeBaseStructure.TIM_Prescaler =psc; //設(shè)置用來作為TIMx時鐘頻率除數(shù)的預(yù)分頻值 10Khz的計數(shù)頻率
TIM_TimeBaseStructure.TIM_ClockDivision = 0; //設(shè)置時鐘分割:TDTS = Tck_tim
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //TIM向上計數(shù)模式
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); //根據(jù)TIM_TimeBaseInitStruct中指定的參數(shù)初始化TIMx的時間基數(shù)單位
TIM_ITConfig(TIM3,TIM_IT_Update,ENABLE ); //使能指定的TIM3中斷,允許更新中斷
NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn; //TIM3中斷
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //先占優(yōu)先級0級
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3; //從優(yōu)先級3級
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道被使能
NVIC_Init(&NVIC_InitStructure); //根據(jù)NVIC_InitStruct中指定的參數(shù)初始化外設(shè)NVIC寄存器
TIM_Cmd(TIM3, ENABLE); //使能TIMx外設(shè)
}
//定時器3中斷服務(wù)程序
void TIM3_IRQHandler(void) //TIM3中斷
{
if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET) //檢查指定的TIM中斷發(fā)生與否:TIM 中斷源
{
TIM_ClearITPendingBit(TIM3, TIM_IT_Update ); //清除TIMx的中斷待處理位:TIM 中斷源
LED0=!LED0;
}
}
//TIM3 PWM部分初始化
//PWM輸出初始化
//arr：自動重裝值
//psc：時鐘預(yù)分頻數(shù)
void TIM3_PWM_Init(u16 arr,u16 psc)
{
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); //使能定時器3時鐘
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE); //使能GPIO外設(shè)和AFIO復(fù)用功能模塊時鐘
GPIO_PinRemapConfig(GPIO_PartialRemap_TIM3, ENABLE); //Timer3部分重映射 TIM3_CH2->PB5
//設(shè)置該引腳為復(fù)用輸出功能,輸出TIM3 CH2的PWM脈沖波形 GPIOB.5
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; //TIM_CH2
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //復(fù)用推挽輸出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化GPIO
//初始化TIM3
TIM_TimeBaseStructure.TIM_Period = arr; //設(shè)置在下一個更新事件裝入活動的自動重裝載寄存器周期的值
TIM_TimeBaseStructure.TIM_Prescaler =psc; //設(shè)置用來作為TIMx時鐘頻率除數(shù)的預(yù)分頻值
TIM_TimeBaseStructure.TIM_ClockDivision = 0; //設(shè)置時鐘分割:TDTS = Tck_tim
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //TIM向上計數(shù)模式
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); //根據(jù)TIM_TimeBaseInitStruct中指定的參數(shù)初始化TIMx的時間基數(shù)單位
//初始化TIM3 Channel2 PWM模式
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2; //選擇定時器模式:TIM脈沖寬度調(diào)制模式2
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //比較輸出使能
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //輸出極性:TIM輸出比較極性高
TIM_OCInitStructure.TIM_Pulse=0;
TIM_OC2Init(TIM3, &TIM_OCInitStructure); //根據(jù)T指定的參數(shù)初始化外設(shè)TIM3 OC2
TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Enable); //使能TIM3在CCR2上的預(yù)裝載寄存器
TIM_Cmd(TIM3, ENABLE); //使能TIM3
}
void TIM4_Int_Init(u16 arr,u16 psc)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE); //時鐘使能
TIM_TimeBaseStructure.TIM_Period = arr; //設(shè)置在下一個更新事件裝入活動的自動重裝載寄存器周期的值 計數(shù)到5000為500ms
TIM_TimeBaseStructure.TIM_Prescaler =psc; //設(shè)置用來作為TIMx時鐘頻率除數(shù)的預(yù)分頻值 10Khz的計數(shù)頻率
TIM_TimeBaseStructure.TIM_ClockDivision = 0; //設(shè)置時鐘分割:TDTS = Tck_tim
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //TIM向上計數(shù)模式
TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure); //根據(jù)TIM_TimeBaseInitStruct中指定的參數(shù)初始化TIMx的時間基數(shù)單位
TIM_ITConfig(TIM4,TIM_IT_Update,ENABLE ); //使能指定的TIM4中斷,允許更新中斷
NVIC_InitStructure.NVIC_IRQChannel = TIM4_IRQn; //TIM3中斷
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //先占優(yōu)先級0級
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2; //從優(yōu)先級3級
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道被使能
NVIC_Init(&NVIC_InitStructure); //根據(jù)NVIC_InitStruct中指定的參數(shù)初始化外設(shè)NVIC寄存器
TIM_Cmd(TIM4, ENABLE); //使能TIMx外設(shè)
}
void PWM_SetCompare1(uint16_t Compare)
{
TIM_SetCompare1(TIM2, Compare);
}
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