树梅派学习 11. 振动传感器实验和干簧管传感器

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;
}