75 lines
2.1 KiB
C
75 lines
2.1 KiB
C
/*
|
|
* This file is part of the TREZOR project, https://trezor.io/
|
|
*
|
|
* Copyright (C) 2014 Pavol Rusnak <stick@satoshilabs.com>
|
|
*
|
|
* This library is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Lesser General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with this library. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "buttons.h"
|
|
|
|
struct buttonState button;
|
|
|
|
#if !EMULATOR
|
|
uint16_t buttonRead(void) {
|
|
return gpio_port_read(BTN_PORT);
|
|
}
|
|
#endif
|
|
|
|
void buttonUpdate()
|
|
{
|
|
uint16_t state;
|
|
static uint16_t last_state = BTN_PIN_YES | BTN_PIN_NO;
|
|
|
|
state = buttonRead();
|
|
|
|
if ((state & BTN_PIN_YES) == 0) { // Yes button is down
|
|
if ((last_state & BTN_PIN_YES) == 0) { // last Yes was down
|
|
if (button.YesDown < 2000000000) button.YesDown++;
|
|
button.YesUp = false;
|
|
} else { // last Yes was up
|
|
button.YesDown = 0;
|
|
button.YesUp = false;
|
|
}
|
|
} else { // Yes button is up
|
|
if ((last_state & BTN_PIN_YES) == 0) { // last Yes was down
|
|
button.YesDown = 0;
|
|
button.YesUp = true;
|
|
} else { // last Yes was up
|
|
button.YesDown = 0;
|
|
button.YesUp = false;
|
|
}
|
|
}
|
|
|
|
if ((state & BTN_PIN_NO) == 0) { // No button is down
|
|
if ((last_state & BTN_PIN_NO) == 0) { // last No was down
|
|
if (button.NoDown < 2000000000) button.NoDown++;
|
|
button.NoUp = false;
|
|
} else { // last No was up
|
|
button.NoDown = 0;
|
|
button.NoUp = false;
|
|
}
|
|
} else { // No button is up
|
|
if ((last_state & BTN_PIN_NO) == 0) { // last No was down
|
|
button.NoDown = 0;
|
|
button.NoUp = true;
|
|
} else { // last No was up
|
|
button.NoDown = 0;
|
|
button.NoUp = false;
|
|
}
|
|
}
|
|
|
|
last_state = state;
|
|
}
|