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doc: renamed project

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SylvanArnold
2025-04-29 13:52:54 +02:00
committed by Sylvan Arnold
parent 244e516bd8
commit 32618389d1
985 changed files with 1 additions and 1 deletions
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134
pico-sensor/McuLib/src/McuDebounce.c Normal file
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/*
* McuDebounce.c
*
* Copyright (c) 2019, 2020, Erich Styger
* SPDX-License-Identifier: BSD-3-Clause
*/
#include "McuDebounce.h"
#include <stdint.h>
#if McuLib_CONFIG_SDK_USE_FREERTOS
void McuDbnc_Process(McuDbnc_Desc_t *data) {
uint32_t buttons;
for(;;) {
switch(data->state) {
case MCUDBMC_STATE_IDLE: /* not doing anything */
return;
case MCUDBMC_STATE_START: /* entering state machine. This might be done from an interrupt, so keep it simple */
if (data->scanValue==0) { /* not assigned yet */
data->scanValue = data->getButtons();
}
data->countTimeMs = 0; /* initialize */
data->lastEventTimeMs = 0; /* initialize */
data->state = MCUDBMC_STATE_PRESS;
return; /* wait the timer period time for next iteration. Caller should enable timer to get to the next state */
case MCUDBMC_STATE_PRESS:
data->onDebounceEvent(MCUDBNC_EVENT_PRESSED, data->scanValue); /* we have a key press: call event handler */
data->state = MCUDBMC_STATE_DEBOUNCE; /* advance to next state */
return; /* wait the timer period time for next iteration */
case MCUDBMC_STATE_DEBOUNCE: /* debouncing */
data->countTimeMs += data->timerPeriodMs;
if (data->countTimeMs<data->debounceTimeMs) {
return; /* continue waiting */
}
data->state = MCUDBMC_STATE_PRESSED;
break; /* go to next state */
case MCUDBMC_STATE_PRESSED: /* button has been pressed, wait for release */
data->countTimeMs += data->timerPeriodMs;
buttons = data->getButtons();
if (buttons==0) { /* all buttons are released */
data->state = MCUDBMC_STATE_RELEASED; /* advance to next state */
break; /* advance to the next state */
} else if (buttons==data->scanValue) { /* still pressing the same keys */
if (data->countTimeMs>=data->longKeyTimeMs) { /* long key press detected */
data->onDebounceEvent(MCUDBNC_EVENT_LONG_PRESSED, data->scanValue);
data->lastEventTimeMs = data->countTimeMs;
data->state = MCUDBMC_STATE_LONG_PRESSED; /* advance to next state */
return; /* wait the timer period time for next iteration */
}
if (data->countTimeMs-data->lastEventTimeMs > data->repeatTimeMs) {
data->onDebounceEvent(MCUDBNC_EVENT_PRESSED_REPEAT, data->scanValue);
data->lastEventTimeMs = data->countTimeMs;
}
return; /* wait the timer period time for next iteration */
} else { /* we got another key set pressed */
uint32_t changed;
changed = buttons&(~data->scanValue); /* newly pressed buttons */
if (changed!=0) {
data->onDebounceEvent(MCUDBNC_EVENT_PRESSED, changed); /* generate press event for the new keys pressed */
data->lastEventTimeMs = data->countTimeMs;
}
changed = (data->scanValue)&(~buttons); /* newly released buttons */
if (changed!=0) {
data->onDebounceEvent(MCUDBNC_EVENT_RELEASED, changed); /* generate release event for the old keys released */
data->lastEventTimeMs = data->countTimeMs;
}
data->scanValue = buttons; /* store new set of buttons */
return; /* wait the timer period time for next iteration */
}
break; /* go to next state */
case MCUDBMC_STATE_LONG_PRESSED: /* we are in the long press range */
data->countTimeMs += data->timerPeriodMs;
buttons = data->getButtons();
if (buttons==0) { /* all buttons are released */
data->state = MCUDBMC_STATE_RELEASED; /* advance to next state */
break; /* advance to the next state */
} else if (buttons==data->scanValue) { /* still pressing the same keys */
if (data->countTimeMs-data->lastEventTimeMs > data->repeatTimeMs) {
data->onDebounceEvent(MCUDBNC_EVENT_LONG_PRESSED_REPEAT, data->scanValue);
data->lastEventTimeMs = data->countTimeMs;
}
return; /* wait the timer period time for next iteration */
} else { /* we got another key set pressed */
uint32_t changed;
changed = buttons&(~data->scanValue); /* newly pressed buttons */
if (changed!=0) {
data->onDebounceEvent(MCUDBNC_EVENT_PRESSED, changed); /* generate press event for the new keys pressed */
data->lastEventTimeMs = data->countTimeMs;
}
changed = (data->scanValue)&(~buttons); /* newly released buttons */
if (changed!=0) {
data->onDebounceEvent(MCUDBNC_EVENT_LONG_RELEASED, changed); /* generate release event for the old keys released */
data->lastEventTimeMs = data->countTimeMs;
}
data->scanValue = buttons; /* store new set of buttons */
return; /* wait the timer period time for next iteration */
}
break; /* go to next state */
case MCUDBMC_STATE_RELEASED:
if (data->countTimeMs>=data->longKeyTimeMs) {
data->onDebounceEvent(MCUDBNC_EVENT_LONG_RELEASED, data->scanValue); /* throw long event */
} else {
data->onDebounceEvent(MCUDBNC_EVENT_RELEASED, data->scanValue); /* throw short event */
}
data->lastEventTimeMs = data->countTimeMs;
data->state = MCUDBMC_STATE_END;
break;
case MCUDBMC_STATE_END: /* finish up */
data->onDebounceEvent(MCUDBNC_EVENT_END, data->scanValue); /* callback at the end of debouncing. */
data->scanValue = 0; /* reset */
data->countTimeMs = 0; /* reset */
data->state = MCUDBMC_STATE_IDLE; /* go back to idle */
return; /* get out of state machine */
default: /* should not happen */
break;
} /* switch */
} /* for */
}
void McuDbnc_Deinit(void) {}
void McuDbnc_Init(void) {}
#endif /* #if McuLib_CONFIG_SDK_USE_FREERTOS */