树梅派学习 11. 振动传感器实验和干簧管传感器

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振动传感器

电路图：

接线图：

实体接线图：

程序：

#include <wiringPi.h>
#include <stdio.h>

#define VibratePin  0
#define Gpin        1
#define Rpin        2

int tmp = 0;

void LED(int color)
{
    pinMode(Gpin, OUTPUT);
    pinMode(Rpin, OUTPUT);
    if (color == 0)
    {
        digitalWrite(Rpin, HIGH);
        digitalWrite(Gpin, LOW);
    }
    else if (color == 1)
    {
        digitalWrite(Rpin, LOW);
        digitalWrite(Gpin, HIGH);
    }
    else
        printf("LED Error");
}

void Print(int x){
    if (x != tmp){
        if (x == 0)
            printf("...ON\n");
        if (x == 1)
            printf("OFF..\n");
        tmp = x;
    }
}

int main(void)
{
    int status = 0;
    int tmp = 0;
    int value = 1;
    if(wiringPiSetup() == -1){ //when initialize wiring failed,print messageto screen
        printf("setup wiringPi failed !");
        return 1; 
    }

    pinMode(VibratePin, INPUT);

    while(1){
        value = digitalRead(VibratePin);
        if (tmp != value){
            status ++;
            if (status > 1){
                status = 0;
            }
            LED(status);    
            Print(status);
            delay(1000);
        }
    }
    return 0;
}

干簧管传感器

线路图：

代码：

#include <wiringPi.h>
#include <stdio.h>

#define ReedPin     0
#define Gpin        1
#define Rpin        2

void LED(char* color)
{
    pinMode(Gpin, OUTPUT);
    pinMode(Rpin, OUTPUT);
    if (color == "RED")
    {
        digitalWrite(Rpin, HIGH);
        digitalWrite(Gpin, LOW);
    }
    else if (color == "GREEN")
    {
        digitalWrite(Rpin, LOW);
        digitalWrite(Gpin, HIGH);
    }
    else
        printf("LED Error");
}

int main(void)
{
    if(wiringPiSetup() == -1){ //when initialize wiring failed,print messageto screen
        printf("setup wiringPi failed !");
        return 1; 
    }

    pinMode(ReedPin, INPUT);
    LED("GREEN");

    while(1){
        if(0 == digitalRead(ReedPin)){
            delay(10);
            if(0 == digitalRead(ReedPin)){
                LED("RED"); 
                printf("Detected Magnetic Material!\n");    
            }
        }
        else if(1 == digitalRead(ReedPin)){
            delay(10);
            if(1 == digitalRead(ReedPin)){
                while(!digitalRead(ReedPin));
                LED("GREEN");
            }
        }
    }
    return 0;
}