Zainul Charbiwala / Mbed 2 deprecated TouchSense

Using a capacitor to implement a touch sensitive \"button\"

Dependencies:   mbed

main.cpp

Committer:
zainulcharbiwala
Date:
2010-10-19
Revision:
0:1d63f10fba0a

File content as of revision 0:1d63f10fba0a:

#include "mbed.h"

#define numsamples 1
int touchSense(void);

DigitalOut myled(LED1);
AnalogIn input(p20);
DigitalIn charger(p19);
DigitalOut ground(p18);
Serial pc(USBTX, USBRX); // tx, rx
    
int main() {
  while(1) {
    if (touchSense()) {
        myled = 1;
    } else {
        myled = 0;
    }
  wait(0.005);
  }
}

int touchSense(void)
{
    float sample;
    ground = 0;
    charger.mode(PullUp);
    charger.mode(PullNone);
    sample=input.read();
    if (sample < 0.3) {
        return 1;
    } else {
        return 0;
    }
}