mirror of
https://github.com/Keychron/qmk_firmware.git
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108 lines
3.3 KiB
C
108 lines
3.3 KiB
C
/* Copyright 2022 @ lokher (https://www.keychron.com)
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "quantum.h"
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#include "bluetooth.h"
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#include "battery.h"
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#include "transport.h"
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#include "ckbt51.h"
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#include "lpm.h"
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#define BATTERY_EMPTY_COUNT 10
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#define CRITICAL_LOW_COUNT 20
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static uint32_t bat_monitor_timer_buffer = 0;
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static uint16_t voltage = FULL_VOLTAGE_VALUE;
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static uint8_t bat_empty = 0;
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static uint8_t critical_low = 0;
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static uint8_t bat_state;
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void battery_init(void) {
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bat_monitor_timer_buffer = 0;
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bat_state = BAT_NOT_CHARGING;
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}
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__attribute__((weak)) void battery_measure(void) {}
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/* Calculate the voltage */
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__attribute__((weak)) void battery_calculate_voltage(uint16_t value) {}
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void battery_set_voltage(uint16_t value) {
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voltage = value;
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}
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uint16_t battery_get_voltage(void) {
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return voltage;
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}
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uint8_t battery_get_percentage(void) {
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if (voltage > FULL_VOLTAGE_VALUE) return 100;
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if (voltage > EMPTY_VOLTAGE_VALUE) {
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return ((uint32_t)voltage - EMPTY_VOLTAGE_VALUE) * 80 / (FULL_VOLTAGE_VALUE - EMPTY_VOLTAGE_VALUE) + 20;
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}
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if (voltage > SHUTDOWN_VOLTAGE_VALUE) {
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return ((uint32_t)voltage - SHUTDOWN_VOLTAGE_VALUE) * 20 / (EMPTY_VOLTAGE_VALUE - SHUTDOWN_VOLTAGE_VALUE);
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} else
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return 0;
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}
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bool battery_is_empty(void) {
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return bat_empty > BATTERY_EMPTY_COUNT;
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}
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bool battery_is_critical_low(void) {
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return critical_low > CRITICAL_LOW_COUNT;
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}
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void battery_check_empty(void) {
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if (voltage < EMPTY_VOLTAGE_VALUE) {
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if (bat_empty <= BATTERY_EMPTY_COUNT) {
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if (++bat_empty > BATTERY_EMPTY_COUNT) indicator_battery_low_enable(true);
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}
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} else if (bat_empty <= BATTERY_EMPTY_COUNT) {
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bat_empty = BATTERY_EMPTY_COUNT;
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}
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}
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void battery_check_critical_low(void) {
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if (voltage < SHUTDOWN_VOLTAGE_VALUE) {
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if (critical_low <= CRITICAL_LOW_COUNT) {
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if (++critical_low > CRITICAL_LOW_COUNT) bluetooth_low_battery_shutdown();
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}
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} else if (critical_low <= CRITICAL_LOW_COUNT) {
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critical_low = 0;
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}
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}
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void battery_task(void) {
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if (get_transport() == TRANSPORT_BLUETOOTH && bluetooth_get_state() == BLUETOOTH_CONNECTED) {
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if (sync_timer_elapsed32(bat_monitor_timer_buffer) > VOLTAGE_MEASURE_INTERVAL) {
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battery_check_empty();
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battery_check_critical_low();
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bat_monitor_timer_buffer = sync_timer_read32();
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battery_measure();
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}
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}
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if ((bat_empty || critical_low) && usb_power_connected()) {
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bat_empty = false;
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critical_low = false;
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indicator_battery_low_enable(false);
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}
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}
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