feat(keyboard): 添加蓝牙HID支持和电池状态事件

- 添加BLE相关模块：ble_adv_ctrl_module、ble_adv_uuid16、ble_bas_module、
  ble_hid_module
- 新增电池状态事件(bat_state_event)用于监控电池电量、充电状态
- 在多个事件中添加HID_TRANSPORT_BLE支持，包括hid_led_event、
  set_protocol_event等
- 更新配置文件prj.conf以启用蓝牙功能、HID服务和设置系统
- 修改电池模块以计算并报告电池SOC百分比
- 集成CAF设置加载器以管理蓝牙配对信息

src/battery_module.c

@@ -1,5 +1,6 @@
 #include <stdbool.h>
 #include <stdint.h>
+#include <string.h>
 
 #include <app_event_manager.h>
 
@@ -16,11 +17,15 @@
 #include <zephyr/logging/log.h>
 #include <zephyr/pm/device.h>
 
+#include "bat_state_event.h"
+
 LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
 
 #define VBATT_NODE DT_PATH(vbatt)
 #define IP5306_NODE DT_NODELABEL(ip5306)
 #define BATTERY_SAMPLE_INTERVAL K_SECONDS(1)
+#define BATTERY_SOC_MIN_MV 3300
+#define BATTERY_SOC_MAX_MV 4200
 
 BUILD_ASSERT(DT_NODE_HAS_STATUS(VBATT_NODE, okay),
 	     "Missing /vbatt voltage-divider node in devicetree");
@@ -30,6 +35,12 @@ BUILD_ASSERT(DT_NODE_HAS_STATUS(IP5306_NODE, okay),
 static const struct device *const vbatt_dev = DEVICE_DT_GET(VBATT_NODE);
 static const struct device *const ip5306_dev = DEVICE_DT_GET(IP5306_NODE);
 static struct k_work_delayable battery_sample_work;
+static struct {
+	bool valid;
+	uint8_t soc;
+	bool charging;
+	bool full;
+} last_bat_state;
 static bool initialized;
 static bool running;
 
@@ -52,6 +63,48 @@ static int measurement_enable(bool enable)
 	return 0;
 }
 
+static uint8_t battery_soc_from_mv(int voltage_mv)
+{
+	const int span_mv = BATTERY_SOC_MAX_MV - BATTERY_SOC_MIN_MV;
+	int bucket;
+
+	if (voltage_mv <= BATTERY_SOC_MIN_MV) {
+		return 0U;
+	}
+
+	if (voltage_mv >= BATTERY_SOC_MAX_MV) {
+		return 100U;
+	}
+
+	bucket = ((voltage_mv - BATTERY_SOC_MIN_MV) * 10 + (span_mv / 2)) / span_mv;
+
+	return (uint8_t)(bucket * 10);
+}
+
+static void submit_bat_state_event(uint8_t soc, bool charging, bool full)
+{
+	struct bat_state_event *event;
+
+	if (last_bat_state.valid &&
+	    (last_bat_state.soc == soc) &&
+	    (last_bat_state.charging == charging) &&
+	    (last_bat_state.full == full)) {
+		return;
+	}
+
+	last_bat_state.valid = true;
+	last_bat_state.soc = soc;
+	last_bat_state.charging = charging;
+	last_bat_state.full = full;
+
+	event = new_bat_state_event();
+	event->soc = soc;
+	event->charging = charging;
+	event->full = full;
+
+	APP_EVENT_SUBMIT(event);
+}
+
 static void battery_sample_fn(struct k_work *work)
 {
 	struct ip5306_status pmic_status;
@@ -84,8 +137,9 @@ static void battery_sample_fn(struct k_work *work)
 	}
 
 	voltage_mv = sensor_value_to_mv(&voltage);
-	// LOG_INF("Battery: %d mV, charging=%d, full=%d",
-	// 	voltage_mv, pmic_status.charging, pmic_status.full);
+	submit_bat_state_event(battery_soc_from_mv(voltage_mv),
+			       pmic_status.charging,
+			       pmic_status.full);
 
 reschedule:
 	if (running) {
@@ -112,6 +166,7 @@ static int module_init(void)
 	}
 
 	k_work_init_delayable(&battery_sample_work, battery_sample_fn);
+	memset(&last_bat_state, 0, sizeof(last_bat_state));
 	power_manager_restrict(MODULE_IDX(MODULE), POWER_MANAGER_LEVEL_SUSPENDED);
 
 	return 0;