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trezor-firmware/core/embed/trezorhal/haptic.h

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/*
* 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_HAPTIC_H
#define TREZORHAL_HAPTIC_H
#include <stdbool.h>
#include <stdint.h>
typedef enum {
// Effect at the start of a button press
HAPTIC_BUTTON_PRESS = 0,
// Effect at the and of hold-to-confirm action
HAPTIC_HOLD_TO_CONFIRM = 1,
} haptic_effect_t;
#ifdef KERNEL_MODE
// Initializes the haptic driver
//
// The function initializes the GPIO pins and the hardware
// peripherals used by the haptic driver.
//
// Returns `true` if the initialization was successful.
bool haptic_init(void);
// Deinitializes the haptic driver
//
// The function deinitializes the hardware peripherals used by the
// haptic driver so the device can be eventually put into a low-power mode.
void haptic_deinit(void);
#endif // KERNEL_MODE
// Enables or disables the haptic driver
//
// When the driver is disabled, it does not play any haptic effects
// and potentially can put the controller into a low-power mode.
//
// The driver is enabled by default (after initialization).
void haptic_set_enabled(bool enabled);
// Returns `true` if haptic driver is enabled
bool haptic_get_enabled(void);
// Tests the haptic driver, playing at maximum amplitude for the given duration
//
// This function is used during production testing to verify that the haptic
// motor is working correctly.
//
// Returns `true` if the test effect was successfully started.
bool haptic_test(uint16_t duration_ms);
// Plays one of haptic effects
//
// The function stops playing any currently running effect and
// starts playing the specified effect.
//
// Returns `true` if the effect was successfully started.
bool haptic_play(haptic_effect_t effect);
// Starts the haptic motor with a specified amplitude (in percent) for a
// specified duration (in milliseconds).
//
// The function stops playing any currently running effect and
// starts playing the specified effect.
//
// The function can be invoked repeatedly during the specified duration
// (`duration_ms`) to modify the amplitude dynamically, allowing
// the creation of customized haptic effects.
//
// Returns `true` if the effect was successfully started.
bool haptic_play_custom(int8_t amplitude_pct, uint16_t duration_ms);
#endif // TREZORHAL_HAPTIC_H