mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-24 15:28:10 +00:00
79cf4959d3
[no changelog]
70 lines
1.9 KiB
C
70 lines
1.9 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/>.
|
|
*/
|
|
|
|
#ifndef TREZORHAL_BUTTON_H
|
|
#define TREZORHAL_BUTTON_H
|
|
|
|
#include <trezor_types.h>
|
|
|
|
// Button event is packed 32-bit value
|
|
//
|
|
// 31 24 23 0
|
|
// |--------|-------------------------|
|
|
// | event | button identifier |
|
|
// |--------|-------------------------|
|
|
//
|
|
//
|
|
|
|
// Button events
|
|
#define BTN_EVT_DOWN (1U << 24)
|
|
#define BTN_EVT_UP (1U << 25)
|
|
|
|
// Button identifiers
|
|
typedef enum {
|
|
BTN_LEFT = 0,
|
|
BTN_RIGHT = 1,
|
|
BTN_POWER = 2,
|
|
} button_t;
|
|
|
|
#ifdef KERNEL_MODE
|
|
|
|
// Initializes button driver
|
|
//
|
|
// Returns true in case of success, false otherwise
|
|
bool button_init(void);
|
|
|
|
#endif // KERNEL_MODE
|
|
|
|
// Get the last button event
|
|
//
|
|
// It's expected there's just one consumer of the button events,
|
|
// e.g. the main loop
|
|
//
|
|
// Returns 0 if no event is available
|
|
uint32_t button_get_event(void);
|
|
|
|
// Checks if the specified button is currently pressed
|
|
//
|
|
// The current implementation returns the state of the button at the time
|
|
// `button_get_event()` was called. In the future, we may fix this limitation.
|
|
// For now, `button_get_event()` must be called before `button_is_down()`.
|
|
bool button_is_down(button_t button);
|
|
|
|
#endif // TREZORHAL_BUTTON_H
|