Editing Stop Function
Dependents: SensorMatic_Project
Fork of SoftPWM by
SoftPWM.cpp@1:ba793e34f506, 2016-05-05 (annotated)
- Committer:
- ll13jdb
- Date:
- Thu May 05 14:53:39 2016 +0000
- Revision:
- 1:ba793e34f506
- Parent:
- 0:7918ce37626c
edited stop function;
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
komaida424 | 0:7918ce37626c | 1 | #include "mbed.h" |
komaida424 | 0:7918ce37626c | 2 | #include "InterruptIn.h" |
komaida424 | 0:7918ce37626c | 3 | #include "SoftPWM.h" |
komaida424 | 0:7918ce37626c | 4 | |
komaida424 | 0:7918ce37626c | 5 | SoftPWM::SoftPWM(PinName _outpin,bool _positive) : pulse(_outpin) //constructa |
komaida424 | 0:7918ce37626c | 6 | { |
komaida424 | 0:7918ce37626c | 7 | if ( _positive ) |
komaida424 | 0:7918ce37626c | 8 | pulse = 0; |
komaida424 | 0:7918ce37626c | 9 | else |
komaida424 | 0:7918ce37626c | 10 | pulse = 1; |
komaida424 | 0:7918ce37626c | 11 | positive = _positive; |
komaida424 | 0:7918ce37626c | 12 | interval = 0.02; |
komaida424 | 0:7918ce37626c | 13 | width = 0; |
komaida424 | 0:7918ce37626c | 14 | start(); |
komaida424 | 0:7918ce37626c | 15 | } |
komaida424 | 0:7918ce37626c | 16 | |
komaida424 | 0:7918ce37626c | 17 | float SoftPWM::read() |
komaida424 | 0:7918ce37626c | 18 | { |
ll13jdb | 1:ba793e34f506 | 19 | if ( width <= 0.0f ) return 0.0; |
ll13jdb | 1:ba793e34f506 | 20 | if ( width > 1.0f ) return 1.0; |
komaida424 | 0:7918ce37626c | 21 | return width / interval; |
komaida424 | 0:7918ce37626c | 22 | } |
komaida424 | 0:7918ce37626c | 23 | |
komaida424 | 0:7918ce37626c | 24 | void SoftPWM::write(float duty) |
komaida424 | 0:7918ce37626c | 25 | { |
komaida424 | 0:7918ce37626c | 26 | width = interval * duty; |
ll13jdb | 1:ba793e34f506 | 27 | if ( duty <= 0.0f ) width = 0.0; |
ll13jdb | 1:ba793e34f506 | 28 | if ( duty > 1.0f ) width = interval; |
komaida424 | 0:7918ce37626c | 29 | } |
komaida424 | 0:7918ce37626c | 30 | |
komaida424 | 0:7918ce37626c | 31 | void SoftPWM::start() |
komaida424 | 0:7918ce37626c | 32 | { |
komaida424 | 0:7918ce37626c | 33 | _ticker.attach(this,&SoftPWM::TickerInterrapt,interval); |
komaida424 | 0:7918ce37626c | 34 | } |
komaida424 | 0:7918ce37626c | 35 | |
komaida424 | 0:7918ce37626c | 36 | void SoftPWM::stop() |
komaida424 | 0:7918ce37626c | 37 | { |
komaida424 | 0:7918ce37626c | 38 | _ticker.detach(); |
komaida424 | 0:7918ce37626c | 39 | if ( positive ) |
komaida424 | 0:7918ce37626c | 40 | pulse = 0; |
komaida424 | 0:7918ce37626c | 41 | else |
komaida424 | 0:7918ce37626c | 42 | pulse = 1; |
komaida424 | 0:7918ce37626c | 43 | wait(width); |
komaida424 | 0:7918ce37626c | 44 | } |
komaida424 | 0:7918ce37626c | 45 | |
komaida424 | 0:7918ce37626c | 46 | void SoftPWM::period(float _period) |
komaida424 | 0:7918ce37626c | 47 | { |
komaida424 | 0:7918ce37626c | 48 | interval = _period; |
komaida424 | 0:7918ce37626c | 49 | start(); |
komaida424 | 0:7918ce37626c | 50 | } |
komaida424 | 0:7918ce37626c | 51 | |
komaida424 | 0:7918ce37626c | 52 | void SoftPWM::period_ms(int _period) |
komaida424 | 0:7918ce37626c | 53 | { |
komaida424 | 0:7918ce37626c | 54 | period((float)_period / 1000); |
komaida424 | 0:7918ce37626c | 55 | start(); |
komaida424 | 0:7918ce37626c | 56 | } |
komaida424 | 0:7918ce37626c | 57 | |
komaida424 | 0:7918ce37626c | 58 | void SoftPWM::period_us(int _period) |
komaida424 | 0:7918ce37626c | 59 | { |
komaida424 | 0:7918ce37626c | 60 | period((float)_period / 1000000); |
komaida424 | 0:7918ce37626c | 61 | start(); |
komaida424 | 0:7918ce37626c | 62 | } |
komaida424 | 0:7918ce37626c | 63 | |
komaida424 | 0:7918ce37626c | 64 | void SoftPWM::pulsewidth(float _width) |
komaida424 | 0:7918ce37626c | 65 | { |
komaida424 | 0:7918ce37626c | 66 | width = _width; |
komaida424 | 0:7918ce37626c | 67 | if ( width < 0.0 ) width = 0.0; |
komaida424 | 0:7918ce37626c | 68 | } |
komaida424 | 0:7918ce37626c | 69 | |
komaida424 | 0:7918ce37626c | 70 | void SoftPWM::pulsewidth_ms(int _width) |
komaida424 | 0:7918ce37626c | 71 | { |
komaida424 | 0:7918ce37626c | 72 | pulsewidth((float)_width / 1000); |
komaida424 | 0:7918ce37626c | 73 | } |
komaida424 | 0:7918ce37626c | 74 | |
komaida424 | 0:7918ce37626c | 75 | void SoftPWM::pulsewidth_us(int _width) |
komaida424 | 0:7918ce37626c | 76 | { |
komaida424 | 0:7918ce37626c | 77 | pulsewidth((float)_width / 1000000); |
komaida424 | 0:7918ce37626c | 78 | } |
komaida424 | 0:7918ce37626c | 79 | |
komaida424 | 0:7918ce37626c | 80 | void SoftPWM::TickerInterrapt() |
komaida424 | 0:7918ce37626c | 81 | { |
komaida424 | 0:7918ce37626c | 82 | if ( width <= 0 ) return; |
komaida424 | 0:7918ce37626c | 83 | _timeout.attach(this,&SoftPWM::end,width); |
komaida424 | 0:7918ce37626c | 84 | if ( positive ) |
komaida424 | 0:7918ce37626c | 85 | pulse = 1; |
komaida424 | 0:7918ce37626c | 86 | else |
komaida424 | 0:7918ce37626c | 87 | pulse = 0; |
komaida424 | 0:7918ce37626c | 88 | } |
komaida424 | 0:7918ce37626c | 89 | |
komaida424 | 0:7918ce37626c | 90 | void SoftPWM::end() |
komaida424 | 0:7918ce37626c | 91 | { |
komaida424 | 0:7918ce37626c | 92 | if ( positive ) |
komaida424 | 0:7918ce37626c | 93 | pulse = 0; |
komaida424 | 0:7918ce37626c | 94 | else |
komaida424 | 0:7918ce37626c | 95 | pulse = 1; |
komaida424 | 0:7918ce37626c | 96 | // _timeout.detach(); |
komaida424 | 0:7918ce37626c | 97 | } |
komaida424 | 0:7918ce37626c | 98 | ; |
komaida424 | 0:7918ce37626c | 99 |