Bチーム / Pswitch_Lib

This is a very tiny library which counts DigitalIn rising , using "Ticker" interrupts.

Fork of Pswitch_Lib by Kero Sunutte

Pswitch.cpp@2:4588548211df, 2014-09-23 (annotated)

Committer:
lilac0112_1
Date:
Tue Sep 23 08:42:55 2014 +0000
Revision:
2:4588548211df
Parent:
0:0bc10e1c0685 
LCD??

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MBE13170 0:0bc10e1c0685 1
MBE13170 0:0bc10e1c0685 2
MBE13170 0:0bc10e1c0685 3 #include "Pswitch.h"
MBE13170 0:0bc10e1c0685 4 #include "mbed.h"
MBE13170 0:0bc10e1c0685 5
MBE13170 0:0bc10e1c0685 6 /*
MBE13170 0:0bc10e1c0685 7 * Constructor
MBE13170 0:0bc10e1c0685 8 */
MBE13170 0:0bc10e1c0685 9 Pswitch::Pswitch(PinName in)
MBE13170 0:0bc10e1c0685 10 : _in(in) {
lilac0112_1 2:4588548211df 11
lilac0112_1 2:4588548211df 12 _in.mode(PullUp);
lilac0112_1 2:4588548211df 13
MBE13170 0:0bc10e1c0685 14 // reset all the flags and counters
MBE13170 0:0bc10e1c0685 15 _samples = 0;
MBE13170 0:0bc10e1c0685 16 _output = 0;
MBE13170 0:0bc10e1c0685 17 _output_last = 0;
MBE13170 0:0bc10e1c0685 18 _rising_flag = 0;
MBE13170 0:0bc10e1c0685 19
MBE13170 0:0bc10e1c0685 20 // Attach ticker
MBE13170 0:0bc10e1c0685 21 _ticker.attach(this, &Pswitch::_sample, 0.005);
MBE13170 0:0bc10e1c0685 22 }
MBE13170 0:0bc10e1c0685 23
MBE13170 0:0bc10e1c0685 24 void Pswitch::_sample() {
MBE13170 0:0bc10e1c0685 25
MBE13170 0:0bc10e1c0685 26
MBE13170 0:0bc10e1c0685 27 _output_last = _output;
MBE13170 0:0bc10e1c0685 28 _output = _in;
MBE13170 0:0bc10e1c0685 29 if (!_output && _output_last)
MBE13170 0:0bc10e1c0685 30 {
MBE13170 0:0bc10e1c0685 31 _rising_flag++;
MBE13170 0:0bc10e1c0685 32 }
MBE13170 0:0bc10e1c0685 33
MBE13170 0:0bc10e1c0685 34 }
MBE13170 0:0bc10e1c0685 35
MBE13170 0:0bc10e1c0685 36 // return number of rising edges
MBE13170 0:0bc10e1c0685 37 int Pswitch::count(void) {
MBE13170 0:0bc10e1c0685 38 int return_value = _rising_flag;
MBE13170 0:0bc10e1c0685 39 _rising_flag = 0;
MBE13170 0:0bc10e1c0685 40 return(return_value);
MBE13170 0:0bc10e1c0685 41 }
MBE13170 0:0bc10e1c0685 42
MBE13170 0:0bc10e1c0685 43 // return the debounced status
MBE13170 0:0bc10e1c0685 44 int Pswitch::read(void) {
MBE13170 0:0bc10e1c0685 45 return(_in);
MBE13170 0:0bc10e1c0685 46 }
MBE13170 0:0bc10e1c0685 47
MBE13170 0:0bc10e1c0685 48 // shorthand for read()
MBE13170 0:0bc10e1c0685 49 Pswitch::operator int() {
MBE13170 0:0bc10e1c0685 50 return read();
MBE13170 0:0bc10e1c0685 51 }