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author | Mike Fiore <mfiore@multitech.com> | 2015-11-12 12:20:30 -0600 |
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committer | Mike Fiore <mfiore@multitech.com> | 2015-11-12 12:20:30 -0600 |
commit | f0f9fc2601dc3421aa3f4d9747748c3bee93f703 (patch) | |
tree | 3d884e151729be7fec59af504cb4dfadf31276ac /ButtonHandler/ButtonHandler.cpp | |
parent | 0bc27ddeae03930deb6106144b49e0614fe002da (diff) | |
download | mtdot-box-evb-factory-firmware-f0f9fc2601dc3421aa3f4d9747748c3bee93f703.tar.gz mtdot-box-evb-factory-firmware-f0f9fc2601dc3421aa3f4d9747748c3bee93f703.tar.bz2 mtdot-box-evb-factory-firmware-f0f9fc2601dc3421aa3f4d9747748c3bee93f703.zip |
add class for handling button events - signals main thread when event occurs and main thread can check event - supports SW1 press, SW2 press, and SW1 hold
Diffstat (limited to 'ButtonHandler/ButtonHandler.cpp')
-rw-r--r-- | ButtonHandler/ButtonHandler.cpp | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/ButtonHandler/ButtonHandler.cpp b/ButtonHandler/ButtonHandler.cpp new file mode 100644 index 0000000..23bcb02 --- /dev/null +++ b/ButtonHandler/ButtonHandler.cpp @@ -0,0 +1,45 @@ +#include "ButtonHandler.h" + +ButtonHandler::ButtonHandler(osThreadId main) + : _main(main), + _sw1(PA_12), + _sw2(PA_11), + _sw1_time(0), + _event(none) +{ + // gpio goes low when push button is pressed + // fall handler will be the press, rise handler will be the release + _sw1.fall(this, &ButtonHandler::sw1_fall); + _sw1.rise(this, &ButtonHandler::sw1_rise); + // need to set mode to PullUp after attaching handlers - won't work otherwise + _sw1.mode(PullUp); + + _sw2.fall(this, &ButtonHandler::sw2_fall); + _sw2.mode(PullUp); +} + +ButtonEvent ButtonHandler::getButtonEvent() { + ButtonEvent event = _event; + _event = none; + return event; +} + +void ButtonHandler::sw1_rise() { + _sw1_timer.stop(); + _sw1_time = _sw1_timer.read_ms(); + + if (_sw1_time > 10) { + _event = (_sw1_time > 500) ? sw1_hold : sw1_press; + osSignalSet(_main, buttonSignal); + } +} + +void ButtonHandler::sw1_fall() { + _sw1_timer.reset(); + _sw1_timer.start(); +} + +void ButtonHandler::sw2_fall() { + _event = sw2_press; + osSignalSet(_main, buttonSignal); +} |