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trezor-firmware/embed/trezorhal/touch.c
2018-10-02 19:03:06 +02:00

45 lines
1.3 KiB
C

/*
* This file is part of the TREZOR project, https://trezor.io/
*
* Copyright (c) SatoshiLabs
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include STM32_HAL_H
#include "touch.h"
#if TREZOR_MODEL == T
#include "touch_t.h"
#elif TREZOR_MODEL == 1
#include "touch_1.h"
#else
#error Unknown TREZOR Model
#endif
uint32_t touch_click(void)
{
uint32_t r = 0;
// flush touch events if any
while (touch_read()) { }
// wait for TOUCH_START
while ((touch_read() & TOUCH_START) == 0) { }
// wait for TOUCH_END
while (((r = touch_read()) & TOUCH_END) == 0) { }
// flush touch events if any
while (touch_read()) { }
// return last touch coordinate
return r;
}