Debounce InterruptIn
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DebouncedInterrupt.cpp@13:09b53a088a9c, 2014-02-18 (annotated)
- Committer:
- kandangath
- Date:
- Tue Feb 18 16:51:44 2014 +0000
- Revision:
- 13:09b53a088a9c
- Parent:
- 10:cb16d2957f8d
- Child:
- 14:da09706b92f5
Change member function
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
kandangath | 10:cb16d2957f8d | 1 | /** |
kandangath | 10:cb16d2957f8d | 2 | * DebouncedInterrupt.cpp |
kandangath | 10:cb16d2957f8d | 3 | **/ |
kandangath | 10:cb16d2957f8d | 4 | #include "DebouncedInterrupt.h" |
kandangath | 0:ca5a0fee9f52 | 5 | |
kandangath | 0:ca5a0fee9f52 | 6 | Timeout timeout; |
kandangath | 0:ca5a0fee9f52 | 7 | |
kandangath | 10:cb16d2957f8d | 8 | DebouncedInterrupt::DebouncedInterrupt(PinName pin) |
kandangath | 10:cb16d2957f8d | 9 | { |
kandangath | 10:cb16d2957f8d | 10 | _in = new InterruptIn(pin); |
kandangath | 10:cb16d2957f8d | 11 | } |
kandangath | 10:cb16d2957f8d | 12 | |
kandangath | 10:cb16d2957f8d | 13 | DebouncedInterrupt::~DebouncedInterrupt() |
kandangath | 10:cb16d2957f8d | 14 | { |
kandangath | 10:cb16d2957f8d | 15 | } |
kandangath | 10:cb16d2957f8d | 16 | |
kandangath | 10:cb16d2957f8d | 17 | void DebouncedInterrupt::attach(void (*fptr)(void), |
kandangath | 4:19689187352e | 18 | const interruptTrigger& trigger, |
kandangath | 0:ca5a0fee9f52 | 19 | const unsigned int& debounce_ms) |
kandangath | 0:ca5a0fee9f52 | 20 | { |
kandangath | 10:cb16d2957f8d | 21 | if(fptr) { |
kandangath | 10:cb16d2957f8d | 22 | fCallback = fptr; |
kandangath | 13:09b53a088a9c | 23 | _last_bounce_count = _bounce_count = 0; |
kandangath | 10:cb16d2957f8d | 24 | |
kandangath | 10:cb16d2957f8d | 25 | switch(trigger) { |
kandangath | 10:cb16d2957f8d | 26 | case INT_RISE: |
kandangath | 10:cb16d2957f8d | 27 | _in->rise(this, &DebouncedInterrupt::_onInterrupt); |
kandangath | 10:cb16d2957f8d | 28 | break; |
kandangath | 10:cb16d2957f8d | 29 | case INT_FALL: |
kandangath | 10:cb16d2957f8d | 30 | _in->fall(this, &DebouncedInterrupt::_onInterrupt); |
kandangath | 10:cb16d2957f8d | 31 | break; |
kandangath | 10:cb16d2957f8d | 32 | default: |
kandangath | 10:cb16d2957f8d | 33 | break; |
kandangath | 10:cb16d2957f8d | 34 | } |
kandangath | 4:19689187352e | 35 | |
kandangath | 10:cb16d2957f8d | 36 | _debounce_us = 1000*debounce_ms; |
kandangath | 0:ca5a0fee9f52 | 37 | } |
kandangath | 0:ca5a0fee9f52 | 38 | } |
kandangath | 0:ca5a0fee9f52 | 39 | |
kandangath | 10:cb16d2957f8d | 40 | void DebouncedInterrupt::reset() |
kandangath | 0:ca5a0fee9f52 | 41 | { |
kandangath | 10:cb16d2957f8d | 42 | timeout.detach(); |
kandangath | 0:ca5a0fee9f52 | 43 | } |
kandangath | 0:ca5a0fee9f52 | 44 | |
kandangath | 13:09b53a088a9c | 45 | unsigned int DebouncedInterrupt::get_bounce() |
kandangath | 10:cb16d2957f8d | 46 | { |
kandangath | 13:09b53a088a9c | 47 | return _last_bounce_count; |
kandangath | 10:cb16d2957f8d | 48 | } |
kandangath | 10:cb16d2957f8d | 49 | |
kandangath | 10:cb16d2957f8d | 50 | void DebouncedInterrupt::_callback() |
kandangath | 7:2d73e219dadf | 51 | { |
kandangath | 13:09b53a088a9c | 52 | _last_bounce_count = _bounce_count; |
kandangath | 13:09b53a088a9c | 53 | _bounce_count = 0; |
kandangath | 7:2d73e219dadf | 54 | fCallback(); |
kandangath | 7:2d73e219dadf | 55 | } |
kandangath | 7:2d73e219dadf | 56 | |
kandangath | 10:cb16d2957f8d | 57 | void DebouncedInterrupt::_onInterrupt() |
kandangath | 0:ca5a0fee9f52 | 58 | { |
kandangath | 13:09b53a088a9c | 59 | _bounce_count++; |
kandangath | 10:cb16d2957f8d | 60 | timeout.attach_us(this, &DebouncedInterrupt::_callback, _debounce_us); |
kandangath | 7:2d73e219dadf | 61 | } |
kandangath | 7:2d73e219dadf | 62 |