87 lines
2.1 KiB
87 lines
2.1 KiB
/* |
|
* Copyright (c) 2020 The ZMK Contributors |
|
* |
|
* SPDX-License-Identifier: MIT |
|
*/ |
|
|
|
#include <device.h> |
|
#include <init.h> |
|
#include <kernel.h> |
|
#include <drivers/sensor.h> |
|
#include <bluetooth/services/bas.h> |
|
|
|
#include <logging/log.h> |
|
|
|
LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL); |
|
|
|
#include <zmk/event-manager.h> |
|
#include <zmk/events/battery-state-changed.h> |
|
|
|
const struct device *battery; |
|
|
|
static int zmk_battery_update(const struct device *battery) { |
|
struct sensor_value state_of_charge; |
|
|
|
int rc = sensor_sample_fetch_chan(battery, SENSOR_CHAN_GAUGE_STATE_OF_CHARGE); |
|
|
|
if (rc != 0) { |
|
LOG_DBG("Failed to fetch battery values: %d", rc); |
|
return rc; |
|
} |
|
|
|
rc = sensor_channel_get(battery, SENSOR_CHAN_GAUGE_STATE_OF_CHARGE, &state_of_charge); |
|
|
|
if (rc != 0) { |
|
LOG_DBG("Failed to get battery state of charge: %d", rc); |
|
return rc; |
|
} |
|
|
|
LOG_DBG("Setting BAS GATT battery level to %d.", state_of_charge.val1); |
|
|
|
rc = bt_gatt_bas_set_battery_level(state_of_charge.val1); |
|
|
|
if (rc != 0) { |
|
LOG_WRN("Failed to set BAS GATT battery level (err %d)", rc); |
|
return rc; |
|
} |
|
|
|
struct battery_state_changed *ev = new_battery_state_changed(); |
|
ev->state_of_charge = state_of_charge.val1; |
|
return ZMK_EVENT_RAISE(ev); |
|
} |
|
|
|
static void zmk_battery_work(struct k_work *work) { |
|
int rc = zmk_battery_update(battery); |
|
|
|
if (rc != 0) { |
|
LOG_DBG("Failed to update battery value: %d.", rc); |
|
} |
|
} |
|
|
|
K_WORK_DEFINE(battery_work, zmk_battery_work); |
|
|
|
static void zmk_battery_timer(struct k_timer *timer) { k_work_submit(&battery_work); } |
|
|
|
K_TIMER_DEFINE(battery_timer, zmk_battery_timer, NULL); |
|
|
|
static int zmk_battery_init(const struct device *_arg) { |
|
battery = device_get_binding("BATTERY"); |
|
|
|
if (battery == NULL) { |
|
LOG_DBG("No battery device labelled BATTERY found."); |
|
return -ENODEV; |
|
} |
|
|
|
int rc = zmk_battery_update(battery); |
|
|
|
if (rc != 0) { |
|
LOG_DBG("Failed to update battery value: %d.", rc); |
|
return rc; |
|
} |
|
|
|
k_timer_start(&battery_timer, K_MINUTES(1), K_MINUTES(1)); |
|
|
|
return 0; |
|
} |
|
|
|
SYS_INIT(zmk_battery_init, APPLICATION, CONFIG_APPLICATION_INIT_PRIORITY);
|
|
|