![](/media/cache/img/default_profile.jpg.50x50_q85.jpg)
Envia valor de voltaje leido escalado por bluetooth.
Fork of VOLTIMETRO1 by
DebouncedIn.cpp@0:4676a90107ca, 2015-04-14 (annotated)
- Committer:
- tony63
- Date:
- Tue Apr 14 02:05:54 2015 +0000
- Revision:
- 0:4676a90107ca
Programa que transmite cadenas, util para verificar si APPINVENTOR recibe cadenas, tres entradas digitales suicheadas controlan en modo toggle, tres colores en la pantalla.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
tony63 | 0:4676a90107ca | 1 | #include "DebouncedIn.h" |
tony63 | 0:4676a90107ca | 2 | #include "mbed.h" |
tony63 | 0:4676a90107ca | 3 | |
tony63 | 0:4676a90107ca | 4 | /* |
tony63 | 0:4676a90107ca | 5 | * Constructor |
tony63 | 0:4676a90107ca | 6 | */ |
tony63 | 0:4676a90107ca | 7 | DebouncedIn::DebouncedIn(PinName in) |
tony63 | 0:4676a90107ca | 8 | : _in(in) { |
tony63 | 0:4676a90107ca | 9 | |
tony63 | 0:4676a90107ca | 10 | // reset all the flags and counters |
tony63 | 0:4676a90107ca | 11 | _samples = 0; |
tony63 | 0:4676a90107ca | 12 | _output = 0; |
tony63 | 0:4676a90107ca | 13 | _output_last = 0; |
tony63 | 0:4676a90107ca | 14 | _rising_flag = 0; |
tony63 | 0:4676a90107ca | 15 | _falling_flag = 0; |
tony63 | 0:4676a90107ca | 16 | _state_counter = 0; |
tony63 | 0:4676a90107ca | 17 | |
tony63 | 0:4676a90107ca | 18 | // Attach ticker |
tony63 | 0:4676a90107ca | 19 | _ticker.attach(this, &DebouncedIn::_sample, 0.005); |
tony63 | 0:4676a90107ca | 20 | } |
tony63 | 0:4676a90107ca | 21 | |
tony63 | 0:4676a90107ca | 22 | void DebouncedIn::_sample() { |
tony63 | 0:4676a90107ca | 23 | |
tony63 | 0:4676a90107ca | 24 | // take a sample |
tony63 | 0:4676a90107ca | 25 | _samples = _samples >> 1; // shift left |
tony63 | 0:4676a90107ca | 26 | |
tony63 | 0:4676a90107ca | 27 | if (_in) { |
tony63 | 0:4676a90107ca | 28 | _samples |= 0x80; |
tony63 | 0:4676a90107ca | 29 | } |
tony63 | 0:4676a90107ca | 30 | |
tony63 | 0:4676a90107ca | 31 | // examine the sample window, look for steady state |
tony63 | 0:4676a90107ca | 32 | if (_samples == 0x00) { |
tony63 | 0:4676a90107ca | 33 | _output = 0; |
tony63 | 0:4676a90107ca | 34 | } |
tony63 | 0:4676a90107ca | 35 | else if (_samples == 0xFF) { |
tony63 | 0:4676a90107ca | 36 | _output = 1; |
tony63 | 0:4676a90107ca | 37 | } |
tony63 | 0:4676a90107ca | 38 | |
tony63 | 0:4676a90107ca | 39 | |
tony63 | 0:4676a90107ca | 40 | // Rising edge detection |
tony63 | 0:4676a90107ca | 41 | if ((_output == 1) && (_output_last == 0)) { |
tony63 | 0:4676a90107ca | 42 | _rising_flag++; |
tony63 | 0:4676a90107ca | 43 | _state_counter = 0; |
tony63 | 0:4676a90107ca | 44 | } |
tony63 | 0:4676a90107ca | 45 | |
tony63 | 0:4676a90107ca | 46 | // Falling edge detection |
tony63 | 0:4676a90107ca | 47 | else if ((_output == 0) && (_output_last == 1)) { |
tony63 | 0:4676a90107ca | 48 | _falling_flag++; |
tony63 | 0:4676a90107ca | 49 | _state_counter = 0; |
tony63 | 0:4676a90107ca | 50 | } |
tony63 | 0:4676a90107ca | 51 | |
tony63 | 0:4676a90107ca | 52 | // steady state |
tony63 | 0:4676a90107ca | 53 | else { |
tony63 | 0:4676a90107ca | 54 | _state_counter++; |
tony63 | 0:4676a90107ca | 55 | } |
tony63 | 0:4676a90107ca | 56 | |
tony63 | 0:4676a90107ca | 57 | // update the output |
tony63 | 0:4676a90107ca | 58 | _output_last = _output; |
tony63 | 0:4676a90107ca | 59 | |
tony63 | 0:4676a90107ca | 60 | } |
tony63 | 0:4676a90107ca | 61 | |
tony63 | 0:4676a90107ca | 62 | |
tony63 | 0:4676a90107ca | 63 | |
tony63 | 0:4676a90107ca | 64 | // return number of rising edges |
tony63 | 0:4676a90107ca | 65 | int DebouncedIn::rising(void) { |
tony63 | 0:4676a90107ca | 66 | int return_value = _rising_flag; |
tony63 | 0:4676a90107ca | 67 | _rising_flag = 0; |
tony63 | 0:4676a90107ca | 68 | return(return_value); |
tony63 | 0:4676a90107ca | 69 | } |
tony63 | 0:4676a90107ca | 70 | |
tony63 | 0:4676a90107ca | 71 | // return number of falling edges |
tony63 | 0:4676a90107ca | 72 | int DebouncedIn::falling(void) { |
tony63 | 0:4676a90107ca | 73 | int return_value = _falling_flag; |
tony63 | 0:4676a90107ca | 74 | _falling_flag = 0; |
tony63 | 0:4676a90107ca | 75 | return(return_value); |
tony63 | 0:4676a90107ca | 76 | } |
tony63 | 0:4676a90107ca | 77 | |
tony63 | 0:4676a90107ca | 78 | // return number of ticsk we've bene steady for |
tony63 | 0:4676a90107ca | 79 | int DebouncedIn::steady(void) { |
tony63 | 0:4676a90107ca | 80 | return(_state_counter); |
tony63 | 0:4676a90107ca | 81 | } |
tony63 | 0:4676a90107ca | 82 | |
tony63 | 0:4676a90107ca | 83 | // return the debounced status |
tony63 | 0:4676a90107ca | 84 | int DebouncedIn::read(void) { |
tony63 | 0:4676a90107ca | 85 | return(_output); |
tony63 | 0:4676a90107ca | 86 | } |
tony63 | 0:4676a90107ca | 87 | |
tony63 | 0:4676a90107ca | 88 | // shorthand for read() |
tony63 | 0:4676a90107ca | 89 | DebouncedIn::operator int() { |
tony63 | 0:4676a90107ca | 90 | return read(); |
tony63 | 0:4676a90107ca | 91 | } |
tony63 | 0:4676a90107ca | 92 | |
tony63 | 0:4676a90107ca | 93 |