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/* Copyright 2022 @ lokher (https://www.keychron.com)
*
* 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 2 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/>.
*/
/******************************************************************************
*
* Filename: lpm.c
*
* Description: Contains low power mode implementation
*
******************************************************************************/
#include "quantum.h"
#if defined(PROTOCOL_CHIBIOS)
# include <usb_main.h>
#endif
#include "bluetooth.h"
#include "indicator.h"
#include "lpm.h"
#include "transport.h"
#include "battery.h"
extern matrix_row_t matrix[MATRIX_ROWS];
extern bluetooth_transport_t bluetooth_transport;
static uint32_t lpm_timer_buffer;
static bool lpm_time_up = false;
static matrix_row_t empty_matrix[MATRIX_ROWS] = {0};
void lpm_init(void) {
#ifdef USB_POWER_SENSE_PIN
# if (USB_POWER_CONNECTED_LEVEL == 0)
setPinInputHigh(USB_POWER_SENSE_PIN);
# else
setPinInputLow(USB_POWER_SENSE_PIN);
# endif
#endif
lpm_timer_reset();
}
inline void lpm_timer_reset(void) {
lpm_time_up = false;
lpm_timer_buffer = sync_timer_read32();
}
void lpm_timer_stop(void) {
lpm_time_up = false;
lpm_timer_buffer = 0;
}
static inline bool lpm_any_matrix_action(void) { return memcmp(matrix, empty_matrix, sizeof(empty_matrix)); }
/* Implement of entering low power mode and wakeup varies per mcu or platform */
__attribute__((weak)) void enter_power_mode(pm_t mode) {}
__attribute__((weak)) bool usb_power_connected(void) {
#ifdef USB_POWER_SENSE_PIN
return readPin(USB_POWER_SENSE_PIN) == USB_POWER_CONNECTED_LEVEL;
#endif
return true;
}
void lpm_task(void) {
if (!lpm_time_up && sync_timer_elapsed32(lpm_timer_buffer) > RUN_MODE_PROCESS_TIME) {
lpm_time_up = true;
lpm_timer_buffer = 0;
}
if (get_transport() == TRANSPORT_BLUETOOTH && lpm_time_up && !indicator_is_running()
#ifdef LED_MATRIX_ENABLE
&& led_matrix_is_driver_shutdown()
#endif
#ifdef RGB_MATRIX_ENABLE
&& rgb_matrix_is_driver_shutdown()
#endif
&& !lpm_any_matrix_action() && !battery_power_on_sample())
enter_power_mode(LOW_POWER_MODE);
}
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