feat: 添加HID主机命令和主题颜色功能

- 添加了新的事件类型包括display_theme_event、hid_host_ack_event、
  hid_host_command_error_event和hid_host_command_event用于处理HID主机命令

- 在CMakeLists.txt中添加了新的源文件，包括显示主题事件和HID主机命令相关模块

- 实现了HID主机命令协议定义，包括主题颜色和时间同步命令

- 在BLE HID模块中添加了对供应商命令报告的支持，增加新的报告ID用于主机命令传输

- 扩展了HID传输路由机制，支持USB和BLE双通道传输

- 实现了显示模块的主题颜色存储功能，支持通过settings持久化保存主题颜色

- 添加了完整的BLE时间同步服务PC主机接入文档

- 修改了电池采样逻辑，增加2秒延迟以等待电池电压稳定

CMakeLists.txt

@@ -27,7 +27,11 @@ target_sources(app PRIVATE
     src/main.c
     src/events/battery_status_event.c
     src/events/config_event.c
+    src/events/display_theme_event.c
     src/events/hid_boot_event.c
+    src/events/hid_host_ack_event.c
+    src/events/hid_host_command_error_event.c
+    src/events/hid_host_command_event.c
     src/events/hid_protocol_event.c
     src/events/hid_report_event.c
     src/events/hid_tx_done_event.c
@@ -41,9 +45,9 @@ target_sources(app PRIVATE
     src/modules/ble_adv_ctrl_module.c
     src/modules/ble_battery_module.c
     src/modules/ble_bond_module.c
-    src/modules/ble_time_sync_module.c
     src/modules/ble_slot_ctrl_module.c
     src/modules/display_module.c
+    src/modules/hid_host_command_module.c
     src/modules/hid_tx_manager_module.c
     src/modules/keyboard_module.c
     src/modules/led_state_module.c

docs/ble_time_sync_pc_host.md

@@ -0,0 +1,281 @@
+# BLE 时间同步服务 PC 上位机接入文档
+
+## 1. 概述
+
+当前项目实现了一套独立的 BLE 时间同步服务，供 PC 上位机在蓝牙连接后向键盘写入当前 UTC 时间、时区和时间精度。
+
+这套服务的设计目标是：
+
+- 不走 HID 报告通道，避免与键盘输入链路耦合。
+- BLE 侧只负责协议适配，实际时间状态统一交给 `time_manager` 管理。
+- 主机只负责“下发时间”，设备不通过此服务回读时间，也不通过 notify 返回确认。
+
+结论上，这是一条：
+
+- 自定义 GATT Service
+- 单个可写 Characteristic
+- 仅支持写入
+- 需要加密连接
+
+的单向时间同步通道。
+
+## 2. GATT 定义
+
+### 2.1 Service UUID
+
+`0b7f5000-38d2-4f62-8f6f-36c4fd73a110`
+
+### 2.2 Characteristic UUID
+
+`0b7f5001-38d2-4f62-8f6f-36c4fd73a110`
+
+### 2.3 Characteristic 属性
+
+- `Write`
+- `Write Without Response`
+
+### 2.4 Characteristic 权限
+
+- `Write Encrypted`
+
+也就是说，上位机在写入前必须先完成配对/加密。未加密链路下，写入会被 GATT 层拒绝。
+
+## 3. 设备端处理逻辑
+
+### 3.1 依赖条件
+
+设备端只有在以下两个条件同时满足时，才接受时间写入：
+
+- BLE 栈已经 ready
+- `time_manager` 已经 ready
+
+如果模块尚未 ready，写入会返回 ATT 错误。
+
+### 3.2 写入成功后的行为
+
+设备端收到合法 payload 后会：
+
+1. 校验版本、长度和 flags。
+2. 解析 `utc_ms`、`timezone_min`、`accuracy_ms`。
+3. 自动把同步来源标记为 `BLE`。
+4. 投递 `time_sync_event` 给 `time_manager`。
+5. `time_manager` 更新运行时钟状态，并延迟异步写入 settings。
+
+注意：
+
+- 当前 BLE 时间同步服务没有 `Read` 或 `Notify` 能力。
+- 主机拿到 GATT 写成功，只能说明设备接受了这次写入。
+- 设备不会通过这个服务主动回传“当前时间”。
+
+## 4. 数据包格式
+
+### 4.1 总长度
+
+固定 `16` 字节。
+
+### 4.2 字段布局
+
+| 偏移 | 长度 | 字段名 | 类型 | 字节序 |
+| --- | --- | --- | --- | --- |
+| 0 | 1 | `version` | `uint8` | - |
+| 1 | 1 | `flags` | `uint8` | - |
+| 2 | 2 | `timezone_min` | `int16` | little-endian |
+| 4 | 8 | `utc_ms` | `uint64` | little-endian |
+| 12 | 4 | `accuracy_ms` | `uint32` | little-endian |
+
+### 4.3 当前协议版本
+
+- `version = 1`
+
+### 4.4 flags 定义
+
+当前只定义 1 个 bit：
+
+- `BIT(0)` = `TIMEZONE_VALID`
+
+因此当前版本必须满足：
+
+- `flags & 0x01 != 0`
+
+推荐主机固定写：
+
+- `flags = 0x01`
+
+## 5. 字段语义
+
+### 5.1 `timezone_min`
+
+单位：分钟。
+
+含义：本地时区相对 UTC 的偏移。
+
+示例：
+
+- 中国标准时间 UTC+8 -> `480`
+- 印度 UTC+5:30 -> `330`
+- UTC-5 -> `-300`
+
+设备端当前接受范围：
+
+- `-1440 ~ +1440`
+
+### 5.2 `utc_ms`
+
+单位：毫秒。
+
+含义：UTC 时间戳，不带本地时区偏移。
+
+要求：
+
+- 必须大于 `0`
+
+### 5.3 `accuracy_ms`
+
+单位：毫秒。
+
+含义：本次时间来源的估计精度。
+
+建议：
+
+- 若上位机没有可靠精度信息，可直接写 `0`
+- 若来自系统时间并已做网络对时，也可以给一个保守值，例如 `50` 或 `100`
+
+## 6. 主机写入建议
+
+### 6.1 推荐使用 Write Request
+
+虽然设备同时支持：
+
+- Write
+- Write Without Response
+
+但 PC 上位机侧建议优先使用 **Write Request（带响应写）**，原因是：
+
+- 更容易拿到 ATT 层成功/失败结果
+- 更方便在开发阶段定位协议错误
+- 更适合作为配置/同步类命令
+
+### 6.2 推荐时序
+
+1. 扫描并连接设备。
+2. 完成配对/加密。
+3. 发现时间同步 Service 和 Characteristic。
+4. 组包为固定 16 字节 payload。
+5. 执行一次带响应写入。
+6. 若写成功，可视为设备已接受此次同步请求。
+
+## 7. Python 示例
+
+下面示例基于 `bleak`，演示如何向设备写入当前系统时间。
+
+```python
+import asyncio
+import struct
+import time
+from bleak import BleakClient
+
+TIME_SYNC_CHAR_UUID = "0b7f5001-38d2-4f62-8f6f-36c4fd73a110"
+
+
+def build_time_sync_payload(timezone_min: int, accuracy_ms: int = 0) -> bytes:
+    version = 1
+    flags = 0x01  # TIMEZONE_VALID
+    utc_ms = int(time.time() * 1000)
+    return struct.pack("<BBhQI", version, flags, timezone_min, utc_ms, accuracy_ms)
+
+
+async def main(address: str):
+    payload = build_time_sync_payload(timezone_min=480, accuracy_ms=50)
+
+    async with BleakClient(address) as client:
+        await client.write_gatt_char(
+            TIME_SYNC_CHAR_UUID,
+            payload,
+            response=True,
+        )
+        print("time sync write done")
+
+
+if __name__ == "__main__":
+    asyncio.run(main("XX:XX:XX:XX:XX:XX"))
+```
+
+说明：
+
+- `struct.pack("<BBhQI", ...)` 对应协议定义的 little-endian 格式。
+- `timezone_min=480` 表示 UTC+8。
+- `response=True` 表示使用带响应写入。
+
+## 8. 常见错误与排查
+
+### 8.1 写入被拒绝
+
+常见原因：
+
+- 还没有完成配对/加密
+- 写入长度不是 16 字节
+- `version != 1`
+- `flags` 未设置 `TIMEZONE_VALID`
+- 使用了 prepare write / long write
+
+### 8.2 写入成功但设备时间没更新
+
+优先检查：
+
+- 设备日志是否出现 `Accepted BLE time sync ...`
+- 设备日志是否出现 `Time synchronized src=1 ...`
+- 上位机是否错误地把本地时间直接当成 UTC 写入
+
+### 8.3 时区显示错误
+
+最常见原因：
+
+- 主机把“本地毫秒时间戳”写进了 `utc_ms`
+- 同时又传了 `timezone_min`
+
+正确做法是：
+
+- `utc_ms` 始终写 UTC 毫秒
+- 本地时区单独放在 `timezone_min`
+
+## 9. ATT 错误码语义
+
+设备端当前会返回的典型 ATT 错误如下：
+
+- `BT_ATT_ERR_UNLIKELY`
+  - 模块尚未 ready，例如 BLE 栈或 `time_manager` 还未初始化完成
+- `BT_ATT_ERR_INVALID_OFFSET`
+  - 非零 offset 写入
+- `BT_ATT_ERR_ATTRIBUTE_NOT_LONG`
+  - 使用 prepare write / 长写流程
+- `BT_ATT_ERR_VALUE_NOT_ALLOWED`
+  - payload 长度、版本、flags 或字段内容不合法
+
+## 10. 当前服务边界
+
+当前版本仅支持：
+
+- 主机 -> 设备 单向校时
+
+当前不支持：
+
+- BLE 读回当前设备时间
+- 校时结果通知
+- 历史同步记录查询
+- DST 单独字段
+- 通过 payload 指定同步来源
+
+同步来源在设备端固定记为：
+
+- `TIME_SYNC_SOURCE_BLE`
+
+## 11. 对接建议
+
+对 PC 上位机实现建议如下：
+
+- 首选带响应写入，不要默认用 write without response
+- 时间戳统一使用 UTC 毫秒
+- 时区单独使用分钟偏移
+- 每次建立加密连接后可主动同步一次时间
+- 若 PC 有系统授时状态，可把估计精度填入 `accuracy_ms`
+

inc/hid_host_command_protocol.h

@@ -0,0 +1,16 @@
+#ifndef HID_HOST_COMMAND_PROTOCOL_H__
+#define HID_HOST_COMMAND_PROTOCOL_H__
+
+#include <stdint.h>
+
+#define HID_HOST_CMD_DATA_SIZE               8U
+#define HID_HOST_CMD_OUTPUT_PAYLOAD_SIZE     (1U + HID_HOST_CMD_DATA_SIZE)
+#define HID_HOST_CMD_ACK_PAYLOAD_SIZE        1U
+
+#define HID_HOST_CMD_ID_THEME_COLOR          0x01U
+#define HID_HOST_CMD_ID_TIME_SYNC            0x02U
+
+#define HID_HOST_CMD_THEME_PARAM_SIZE        3U
+#define HID_HOST_CMD_TIME_SYNC_PARAM_SIZE    8U
+
+#endif /* HID_HOST_COMMAND_PROTOCOL_H__ */

inc/hid_host_transport.h

@@ -0,0 +1,9 @@
+#ifndef HID_HOST_TRANSPORT_H__
+#define HID_HOST_TRANSPORT_H__
+
+enum hid_host_transport {
+	HID_HOST_TRANSPORT_USB = 0,
+	HID_HOST_TRANSPORT_BLE,
+};
+
+#endif /* HID_HOST_TRANSPORT_H__ */

inc/hid_report_descriptor.h

@@ -3,11 +3,14 @@
 
 #include <zephyr/usb/class/usbd_hid.h>
 
+#include "hid_host_command_protocol.h"
+
 /* 与 HID Report Map 对齐的 Report ID。 */
 enum {
 	REPORT_ID_KEYBOARD = 1,
 	REPORT_ID_CONSUMER = 3,
 	REPORT_ID_VENDOR = 4,
+	REPORT_ID_VENDOR_CMD = 5,
 };
 
 #define HID_KBD_USAGE_MAX          0x00E7U
@@ -18,6 +21,7 @@ enum {
 #define HID_BOOT_KBD_PAYLOAD_SIZE  8U
 #define HID_CONSUMER_PAYLOAD_SIZE  2U
 #define HID_VENDOR_PAYLOAD_SIZE    HID_KBD_PAYLOAD_SIZE
+#define HID_VENDOR_ACK_PAYLOAD_SIZE HID_HOST_CMD_ACK_PAYLOAD_SIZE
 #define HID_KBD_LED_PAYLOAD_SIZE   1U
 #define HID_FULL_REPORT_SIZE(payload) (1U + (payload))
 
@@ -33,9 +37,10 @@ enum {
  * 键盘(NKRO) + Consumer + Vendor 的复合 Report 描述符：
  * - USB Report 接口和 BLE HIDS Report Map 统一使用这份定义，
  *   避免两边手写常量后长期演进出现不一致。
- * - Vendor Report 复用与 NKRO 键盘状态相同的 payload 结构：
- *   [modifier(1B) | usage_bitmap(29B)]。
- *   这样主机可以下发“屏蔽遮罩”，设备也可以上报“真实键盘状态”。
+ * - Report ID 0x04 继续复用 NKRO payload，承载私有状态/遮罩语义。
+ * - Report ID 0x05 预留给“主机命令 + 设备 ACK”通道：
+ *   - Output payload 固定 9 字节：[cmd(1) | data(8)]
+ *   - Input payload 固定 1 字节：[cmd]
  */
 #define HID_DESC_KEYBOARD_NKRO_CONSUMER()                                         \
     {                                                                             \
@@ -105,6 +110,22 @@ enum {
         HID_REPORT_COUNT(HID_VENDOR_PAYLOAD_SIZE),                                \
         HID_USAGE(0x02U),                                                         \
         HID_OUTPUT(0x02),                                                         \
+        HID_END_COLLECTION,                                                       \
+                                                                                  \
+        /* Vendor 页(0xFF01)：主机命令写入 + 设备 ACK 返回。 */                  \
+        HID_USAGE_PAGE16(0x01, 0xFF),                                             \
+        HID_USAGE(0x05U),                                                         \
+        HID_COLLECTION(HID_COLLECTION_APPLICATION),                               \
+        HID_REPORT_ID(REPORT_ID_VENDOR_CMD),                                      \
+        HID_LOGICAL_MIN8(0),                                                      \
+        HID_LOGICAL_MAX16(0xFF, 0x00),                                            \
+        HID_REPORT_SIZE(8),                                                       \
+        HID_REPORT_COUNT(HID_VENDOR_ACK_PAYLOAD_SIZE),                            \
+        HID_USAGE(0x05U),                                                         \
+        HID_INPUT(0x02),                                                          \
+        HID_REPORT_COUNT(HID_HOST_CMD_OUTPUT_PAYLOAD_SIZE),                       \
+        HID_USAGE(0x05U),                                                         \
+        HID_OUTPUT(0x02),                                                         \
         HID_END_COLLECTION,                                                       \
     }
 

inc/time_manager.h

@@ -18,6 +18,7 @@ enum time_sync_source {
 	TIME_SYNC_SOURCE_BLE,
 	TIME_SYNC_SOURCE_USB,
 	TIME_SYNC_SOURCE_MANUAL,
+	TIME_SYNC_SOURCE_HID,
 };
 
 /*

prj.conf

@@ -52,8 +52,8 @@ CONFIG_BT_GATT_POOL=y
 CONFIG_BT_GATT_CHRC_POOL_SIZE=16
 CONFIG_BT_GATT_UUID16_POOL_SIZE=24
 CONFIG_BT_HIDS_ATTR_MAX=40
-CONFIG_BT_HIDS_INPUT_REP_MAX=3
-CONFIG_BT_HIDS_OUTPUT_REP_MAX=2
+CONFIG_BT_HIDS_INPUT_REP_MAX=4
+CONFIG_BT_HIDS_OUTPUT_REP_MAX=3
 CONFIG_BT_HIDS_FEATURE_REP_MAX=0
 
 CONFIG_USB_DEVICE_STACK_NEXT=y

src/events/display_theme_event.c

@@ -0,0 +1,31 @@
+#include "display_theme_event.h"
+
+static void log_display_theme_event(const struct app_event_header *aeh)
+{
+	const struct display_theme_event *event = cast_display_theme_event(aeh);
+
+	APP_EVENT_MANAGER_LOG(aeh, "rgb=(%u,%u,%u)",
+			      event->red, event->green, event->blue);
+}
+
+static void profile_display_theme_event(struct log_event_buf *buf,
+					const struct app_event_header *aeh)
+{
+	const struct display_theme_event *event = cast_display_theme_event(aeh);
+
+	nrf_profiler_log_encode_uint8(buf, event->red);
+	nrf_profiler_log_encode_uint8(buf, event->green);
+	nrf_profiler_log_encode_uint8(buf, event->blue);
+}
+
+APP_EVENT_INFO_DEFINE(display_theme_event,
+		      ENCODE(NRF_PROFILER_ARG_U8,
+			     NRF_PROFILER_ARG_U8,
+			     NRF_PROFILER_ARG_U8),
+		      ENCODE("red", "green", "blue"),
+		      profile_display_theme_event);
+
+APP_EVENT_TYPE_DEFINE(display_theme_event,
+		      log_display_theme_event,
+		      &display_theme_event_info,
+		      APP_EVENT_FLAGS_CREATE(APP_EVENT_TYPE_FLAGS_INIT_LOG_ENABLE));

src/events/display_theme_event.h

@@ -0,0 +1,30 @@
+#ifndef DISPLAY_THEME_EVENT_H__
+#define DISPLAY_THEME_EVENT_H__
+
+#include <stdint.h>
+
+#include <app_event_manager.h>
+#include <app_event_manager_profiler_tracer.h>
+
+struct display_theme_event {
+	struct app_event_header header;
+	uint8_t red;
+	uint8_t green;
+	uint8_t blue;
+};
+
+APP_EVENT_TYPE_DECLARE(display_theme_event);
+
+static inline void display_theme_event_submit(uint8_t red,
+					      uint8_t green,
+					      uint8_t blue)
+{
+	struct display_theme_event *event = new_display_theme_event();
+
+	event->red = red;
+	event->green = green;
+	event->blue = blue;
+	APP_EVENT_SUBMIT(event);
+}
+
+#endif /* DISPLAY_THEME_EVENT_H__ */

src/events/hid_host_ack_event.c

@@ -0,0 +1,29 @@
+#include "hid_host_ack_event.h"
+
+static void log_hid_host_ack_event(const struct app_event_header *aeh)
+{
+	const struct hid_host_ack_event *event = cast_hid_host_ack_event(aeh);
+
+	APP_EVENT_MANAGER_LOG(aeh, "transport=%u cmd=0x%02x",
+			      event->transport, event->cmd);
+}
+
+static void profile_hid_host_ack_event(struct log_event_buf *buf,
+				       const struct app_event_header *aeh)
+{
+	const struct hid_host_ack_event *event = cast_hid_host_ack_event(aeh);
+
+	nrf_profiler_log_encode_uint8(buf, (uint8_t)event->transport);
+	nrf_profiler_log_encode_uint8(buf, event->cmd);
+}
+
+APP_EVENT_INFO_DEFINE(hid_host_ack_event,
+		      ENCODE(NRF_PROFILER_ARG_U8,
+			     NRF_PROFILER_ARG_U8),
+		      ENCODE("transport", "cmd"),
+		      profile_hid_host_ack_event);
+
+APP_EVENT_TYPE_DEFINE(hid_host_ack_event,
+		      log_hid_host_ack_event,
+		      &hid_host_ack_event_info,
+		      APP_EVENT_FLAGS_CREATE(APP_EVENT_TYPE_FLAGS_INIT_LOG_ENABLE));

src/events/hid_host_ack_event.h

@@ -0,0 +1,29 @@
+#ifndef HID_HOST_ACK_EVENT_H__
+#define HID_HOST_ACK_EVENT_H__
+
+#include <stdint.h>
+
+#include <app_event_manager.h>
+#include <app_event_manager_profiler_tracer.h>
+
+#include "hid_host_transport.h"
+
+struct hid_host_ack_event {
+	struct app_event_header header;
+	enum hid_host_transport transport;
+	uint8_t cmd;
+};
+
+APP_EVENT_TYPE_DECLARE(hid_host_ack_event);
+
+static inline void hid_host_ack_event_submit(enum hid_host_transport transport,
+					     uint8_t cmd)
+{
+	struct hid_host_ack_event *event = new_hid_host_ack_event();
+
+	event->transport = transport;
+	event->cmd = cmd;
+	APP_EVENT_SUBMIT(event);
+}
+
+#endif /* HID_HOST_ACK_EVENT_H__ */

src/events/hid_host_command_error_event.c

@@ -0,0 +1,36 @@
+#include "hid_host_command_error_event.h"
+
+static void log_hid_host_command_error_event(const struct app_event_header *aeh)
+{
+	const struct hid_host_command_error_event *event =
+		cast_hid_host_command_error_event(aeh);
+
+	APP_EVENT_MANAGER_LOG(aeh,
+			      "transport=%u cmd=0x%02x reason=%u",
+			      event->transport,
+			      event->cmd,
+			      event->reason);
+}
+
+static void profile_hid_host_command_error_event(struct log_event_buf *buf,
+						 const struct app_event_header *aeh)
+{
+	const struct hid_host_command_error_event *event =
+		cast_hid_host_command_error_event(aeh);
+
+	nrf_profiler_log_encode_uint8(buf, (uint8_t)event->transport);
+	nrf_profiler_log_encode_uint8(buf, event->cmd);
+	nrf_profiler_log_encode_uint8(buf, (uint8_t)event->reason);
+}
+
+APP_EVENT_INFO_DEFINE(hid_host_command_error_event,
+		      ENCODE(NRF_PROFILER_ARG_U8,
+			     NRF_PROFILER_ARG_U8,
+			     NRF_PROFILER_ARG_U8),
+		      ENCODE("transport", "cmd", "reason"),
+		      profile_hid_host_command_error_event);
+
+APP_EVENT_TYPE_DEFINE(hid_host_command_error_event,
+		      log_hid_host_command_error_event,
+		      &hid_host_command_error_event_info,
+		      APP_EVENT_FLAGS_CREATE(APP_EVENT_TYPE_FLAGS_INIT_LOG_ENABLE));

src/events/hid_host_command_error_event.h

@@ -0,0 +1,41 @@
+#ifndef HID_HOST_COMMAND_ERROR_EVENT_H__
+#define HID_HOST_COMMAND_ERROR_EVENT_H__
+
+#include <stdint.h>
+
+#include <app_event_manager.h>
+#include <app_event_manager_profiler_tracer.h>
+
+#include "hid_host_transport.h"
+
+enum hid_host_command_error_reason {
+	HID_HOST_COMMAND_ERROR_UNKNOWN_CMD = 0,
+	HID_HOST_COMMAND_ERROR_INVALID_LENGTH,
+	HID_HOST_COMMAND_ERROR_INVALID_PARAM,
+	HID_HOST_COMMAND_ERROR_NOT_READY,
+};
+
+struct hid_host_command_error_event {
+	struct app_event_header header;
+	enum hid_host_transport transport;
+	enum hid_host_command_error_reason reason;
+	uint8_t cmd;
+};
+
+APP_EVENT_TYPE_DECLARE(hid_host_command_error_event);
+
+static inline void hid_host_command_error_event_submit(
+	enum hid_host_transport transport,
+	uint8_t cmd,
+	enum hid_host_command_error_reason reason)
+{
+	struct hid_host_command_error_event *event =
+		new_hid_host_command_error_event();
+
+	event->transport = transport;
+	event->cmd = cmd;
+	event->reason = reason;
+	APP_EVENT_SUBMIT(event);
+}
+
+#endif /* HID_HOST_COMMAND_ERROR_EVENT_H__ */

src/events/hid_host_command_event.c

@@ -0,0 +1,47 @@
+#include "hid_host_command_event.h"
+
+static const char *transport_name(enum hid_host_transport transport)
+{
+	switch (transport) {
+	case HID_HOST_TRANSPORT_USB:
+		return "usb";
+	case HID_HOST_TRANSPORT_BLE:
+		return "ble";
+	default:
+		return "unknown";
+	}
+}
+
+static void log_hid_host_command_event(const struct app_event_header *aeh)
+{
+	const struct hid_host_command_event *event =
+		cast_hid_host_command_event(aeh);
+
+	APP_EVENT_MANAGER_LOG(aeh, "transport=%s cmd=0x%02x data_len=%u",
+			      transport_name(event->transport),
+			      event->cmd,
+			      event->data_len);
+}
+
+static void profile_hid_host_command_event(struct log_event_buf *buf,
+					   const struct app_event_header *aeh)
+{
+	const struct hid_host_command_event *event =
+		cast_hid_host_command_event(aeh);
+
+	nrf_profiler_log_encode_uint8(buf, (uint8_t)event->transport);
+	nrf_profiler_log_encode_uint8(buf, event->cmd);
+	nrf_profiler_log_encode_uint8(buf, event->data_len);
+}
+
+APP_EVENT_INFO_DEFINE(hid_host_command_event,
+		      ENCODE(NRF_PROFILER_ARG_U8,
+			     NRF_PROFILER_ARG_U8,
+			     NRF_PROFILER_ARG_U8),
+		      ENCODE("transport", "cmd", "data_len"),
+		      profile_hid_host_command_event);
+
+APP_EVENT_TYPE_DEFINE(hid_host_command_event,
+		      log_hid_host_command_event,
+		      &hid_host_command_event_info,
+		      APP_EVENT_FLAGS_CREATE(APP_EVENT_TYPE_FLAGS_INIT_LOG_ENABLE));

src/events/hid_host_command_event.h

@@ -0,0 +1,44 @@
+#ifndef HID_HOST_COMMAND_EVENT_H__
+#define HID_HOST_COMMAND_EVENT_H__
+
+#include <stdint.h>
+#include <string.h>
+
+#include <app_event_manager.h>
+#include <app_event_manager_profiler_tracer.h>
+#include <zephyr/sys/util.h>
+
+#include "hid_host_command_protocol.h"
+#include "hid_host_transport.h"
+
+struct hid_host_command_event {
+	struct app_event_header header;
+	enum hid_host_transport transport;
+	uint8_t cmd;
+	uint8_t data_len;
+	uint8_t data[HID_HOST_CMD_DATA_SIZE];
+};
+
+APP_EVENT_TYPE_DECLARE(hid_host_command_event);
+
+static inline void hid_host_command_event_submit(enum hid_host_transport transport,
+						 uint8_t cmd,
+						 const uint8_t *data,
+						 size_t data_len)
+{
+	struct hid_host_command_event *event = new_hid_host_command_event();
+	size_t copy_len = MIN(data_len, (size_t)HID_HOST_CMD_DATA_SIZE);
+
+	event->transport = transport;
+	event->cmd = cmd;
+	event->data_len = (uint8_t)copy_len;
+	memset(event->data, 0, sizeof(event->data));
+
+	if ((copy_len > 0U) && (data != NULL)) {
+		memcpy(event->data, data, copy_len);
+	}
+
+	APP_EVENT_SUBMIT(event);
+}
+
+#endif /* HID_HOST_COMMAND_EVENT_H__ */

src/events/hid_tx_event.c

@@ -11,8 +11,12 @@ static void log_hid_tx_event(const struct app_event_header *aeh)
 		payload_len = event->dyndata.size - 1U;
 	}
 
-	APP_EVENT_MANAGER_LOG(aeh, "kind=%u report_id=0x%02x payload_len=%u",
-			      event->kind, report_id, payload_len);
+	APP_EVENT_MANAGER_LOG(aeh,
+			      "kind=%u route=%u report_id=0x%02x payload_len=%u",
+			      event->kind,
+			      event->route,
+			      report_id,
+			      payload_len);
 }
 
 static void profile_hid_tx_event(struct log_event_buf *buf,
@@ -26,15 +30,17 @@ static void profile_hid_tx_event(struct log_event_buf *buf,
 	}
 
 	nrf_profiler_log_encode_uint8(buf, (uint8_t)event->kind);
+	nrf_profiler_log_encode_uint8(buf, (uint8_t)event->route);
 	nrf_profiler_log_encode_uint8(buf, report_id);
 	nrf_profiler_log_encode_uint16(buf, event->dyndata.size);
 }
 
 APP_EVENT_INFO_DEFINE(hid_tx_event,
 		      ENCODE(NRF_PROFILER_ARG_U8,
+			     NRF_PROFILER_ARG_U8,
 			     NRF_PROFILER_ARG_U8,
 			     NRF_PROFILER_ARG_U16),
-		      ENCODE("kind", "report_id", "len"),
+		      ENCODE("kind", "route", "report_id", "len"),
 		      profile_hid_tx_event);
 
 APP_EVENT_TYPE_DEFINE(hid_tx_event,

src/events/hid_tx_event.h

@@ -13,21 +13,30 @@ enum hid_tx_kind {
 	HID_TX_KIND_REPORT,
 };
 
+enum hid_tx_route {
+	HID_TX_ROUTE_AUTO = 0,
+	HID_TX_ROUTE_USB,
+	HID_TX_ROUTE_BLE,
+};
+
 struct hid_tx_event {
 	struct app_event_header header;
 	enum hid_tx_kind kind;
+	enum hid_tx_route route;
 	struct event_dyndata dyndata;
 };
 
 APP_EVENT_TYPE_DYNDATA_DECLARE(hid_tx_event);
 
-static inline void hid_tx_event_submit(enum hid_tx_kind kind,
+static inline void hid_tx_event_submit_routed(enum hid_tx_kind kind,
+					      enum hid_tx_route route,
 					      const uint8_t *data,
 					      size_t size)
 {
 	struct hid_tx_event *event = new_hid_tx_event(size);
 
 	event->kind = kind;
+	event->route = route;
 	if ((size > 0U) && (data != NULL)) {
 		memcpy(event->dyndata.data, data, size);
 	}
@@ -35,6 +44,13 @@ static inline void hid_tx_event_submit(enum hid_tx_kind kind,
 	APP_EVENT_SUBMIT(event);
 }
 
+static inline void hid_tx_event_submit(enum hid_tx_kind kind,
+				       const uint8_t *data,
+				       size_t size)
+{
+	hid_tx_event_submit_routed(kind, HID_TX_ROUTE_AUTO, data, size);
+}
+
 static inline const uint8_t *hid_tx_event_get_data(const struct hid_tx_event *event)
 {
 	return event->dyndata.data;
@@ -45,4 +61,9 @@ static inline size_t hid_tx_event_get_size(const struct hid_tx_event *event)
 	return event->dyndata.size;
 }
 
+static inline enum hid_tx_route hid_tx_event_get_route(const struct hid_tx_event *event)
+{
+	return event->route;
+}
+
 #endif /* HID_TX_EVENT_H__ */

src/events/time_sync_event.c

@@ -12,6 +12,8 @@ static const char *time_sync_source_name(enum time_sync_source source)
 		return "usb";
 	case TIME_SYNC_SOURCE_MANUAL:
 		return "manual";
+	case TIME_SYNC_SOURCE_HID:
+		return "hid";
 	default:
 		return "unknown";
 	}

src/modules/battery_module.c

@@ -230,7 +230,8 @@ static void battery_sampling_set_enabled(bool enable)
 
 	if (enable)
 	{
-		k_work_reschedule(&battery.sample_work, K_NO_WAIT);
+		// 延迟2s开始采样等待电池电压稳定
+		k_work_reschedule(&battery.sample_work, K_MSEC(2000));
 	}
 	else
 	{

src/modules/ble_hid_module.c

@@ -8,6 +8,7 @@
 #include <caf/events/ble_common_event.h>
 
 #include "hid_protocol_event.h"
+#include "hid_host_command_event.h"
 #include "hid_report_descriptor.h"
 #include "hid_tx_done_event.h"
 #include "hid_tx_event.h"
@@ -18,8 +19,8 @@
 #include <zephyr/logging/log.h>
 LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
 
-#define INPUT_REPORT_COUNT 3
-#define OUTPUT_REPORT_COUNT 2
+#define INPUT_REPORT_COUNT 4
+#define OUTPUT_REPORT_COUNT 3
 
 BT_HIDS_DEF(hids_obj, INPUT_REPORT_COUNT, OUTPUT_REPORT_COUNT, 0);
 
@@ -52,6 +53,19 @@ static bool ble_hid_is_connected(void)
 	return ble_hid.link.conn != NULL;
 }
 
+static bool ble_hid_should_handle_tx_event(const struct hid_tx_event *event)
+{
+	switch (hid_tx_event_get_route(event)) {
+	case HID_TX_ROUTE_AUTO:
+		return ble_hid.policy.ble_mode_selected;
+	case HID_TX_ROUTE_BLE:
+		return true;
+	case HID_TX_ROUTE_USB:
+	default:
+		return false;
+	}
+}
+
 static bool ble_hid_is_boot_mode(void)
 {
 	return ble_hid.link.protocol_mode == BT_HIDS_PM_BOOT;
@@ -156,6 +170,25 @@ static void vendor_output_report_handler(struct bt_hids_rep *rep,
 	LOG_INF("Vendor mask updated over BLE len=%u", rep->size);
 }
 
+static void vendor_cmd_output_report_handler(struct bt_hids_rep *rep,
+					     struct bt_conn *conn,
+					     bool write)
+{
+	ARG_UNUSED(conn);
+
+	if (!write || !rep || !rep->data ||
+	    (rep->size != HID_HOST_CMD_OUTPUT_PAYLOAD_SIZE)) {
+		return;
+	}
+
+	hid_host_command_event_submit(HID_HOST_TRANSPORT_BLE,
+				      rep->data[0],
+				      &rep->data[1],
+				      rep->size - 1U);
+	LOG_INF("Vendor cmd updated over BLE cmd=0x%02x len=%u",
+		rep->data[0], rep->size);
+}
+
 static int hids_service_init(void)
 {
 	static const uint8_t report_map[] = HID_DESC_KEYBOARD_NKRO_CONSUMER();
@@ -182,6 +215,10 @@ static int hids_service_init(void)
 	input_report[2].size = HID_VENDOR_PAYLOAD_SIZE;
 	input_report[2].handler = report_notify_handler;
 
+	input_report[3].id = REPORT_ID_VENDOR_CMD;
+	input_report[3].size = HID_VENDOR_ACK_PAYLOAD_SIZE;
+	input_report[3].handler = report_notify_handler;
+
 	output_report[0].id = REPORT_ID_KEYBOARD;
 	output_report[0].size = HID_KBD_LED_PAYLOAD_SIZE;
 	output_report[0].handler = keyboard_output_report_handler;
@@ -190,6 +227,10 @@ static int hids_service_init(void)
 	output_report[1].size = HID_VENDOR_PAYLOAD_SIZE;
 	output_report[1].handler = vendor_output_report_handler;
 
+	output_report[2].id = REPORT_ID_VENDOR_CMD;
+	output_report[2].size = HID_HOST_CMD_OUTPUT_PAYLOAD_SIZE;
+	output_report[2].handler = vendor_cmd_output_report_handler;
+
 	init_param.inp_rep_group_init.cnt = INPUT_REPORT_COUNT;
 	init_param.outp_rep_group_init.cnt = OUTPUT_REPORT_COUNT;
 	init_param.pm_evt_handler = pm_evt_handler;
@@ -227,7 +268,7 @@ static void handle_ble_peer_event(const struct ble_peer_event *event)
 
 static bool handle_hid_tx_event(const struct hid_tx_event *event)
 {
-	if (!ble_hid.policy.ble_mode_selected) {
+	if (!ble_hid_should_handle_tx_event(event)) {
 		return false;
 	}
 
@@ -291,6 +332,8 @@ static bool handle_hid_tx_event(const struct hid_tx_event *event)
 		rep_index = 1U;
 	} else if (report_id == REPORT_ID_VENDOR) {
 		rep_index = 2U;
+	} else if (report_id == REPORT_ID_VENDOR_CMD) {
+		rep_index = 3U;
 	} else {
 		hid_tx_done_event_submit(HID_TX_KIND_REPORT, false);
 		return false;

src/modules/display_module.c

@@ -1,4 +1,5 @@
 #include <errno.h>
+#include <string.h>
 #include <stdio.h>
 #include <time.h>
 
@@ -7,6 +8,7 @@
 #include <zephyr/drivers/display.h>
 #include <zephyr/drivers/led.h>
 #include <zephyr/kernel.h>
+#include <zephyr/settings/settings.h>
 
 #include <app_event_manager.h>
 #include <lvgl.h>
@@ -18,6 +20,7 @@
 #include <caf/events/power_event.h>
 
 #include "battery_status_event.h"
+#include "display_theme_event.h"
 #include "keyboard_led_event.h"
 #include "mode_event.h"
 #include "time_manager.h"
@@ -28,6 +31,8 @@ LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
 #define DISPLAY_UPDATE_PERIOD_MS 1000
 #define DISPLAY_IDLE_TIMEOUT_MIN 1
 #define DISPLAY_BACKLIGHT_BRIGHTNESS 100
+#define DISPLAY_THEME_SAVE_DELAY      K_SECONDS(1)
+#define DISPLAY_THEME_STORAGE_KEY     "theme"
 #define DISPLAY_DEMO_BASE_YEAR 2026
 #define DISPLAY_DEMO_BASE_MONTH 3
 #define DISPLAY_DEMO_BASE_DAY 27
@@ -78,10 +83,20 @@ struct display_ctx
 	struct display_capabilities caps;
 	struct k_work_delayable update_work;
 	struct k_work_delayable idle_work;
+	struct k_work_delayable theme_save_work;
 	struct display_ui_state ui;
 	uint32_t tick_count;
 	enum display_pm_state pm_state;
 	bool initialized;
+	bool theme_storage_dirty;
+	bool theme_storage_loaded;
+};
+
+struct display_theme_storage {
+	uint8_t red;
+	uint8_t green;
+	uint8_t blue;
+	uint8_t valid_marker;
 };
 
 static struct display_ctx disp = {
@@ -95,6 +110,8 @@ static struct display_ctx disp = {
 	.pm_state = DISPLAY_PM_STATE_OFF,
 };
 
+static struct display_theme_storage display_theme_storage;
+
 static const struct led_dt_spec display_backlight =
 	LED_DT_SPEC_GET(DT_NODELABEL(backlight));
 
@@ -107,6 +124,94 @@ static const char *const g_status_texts[DISPLAY_STATUS_COUNT] = {
 
 static void display_refresh_all_locked(void);
 
+static int display_theme_store(const struct display_theme_storage *storage)
+{
+	char key[] = MODULE_NAME "/" DISPLAY_THEME_STORAGE_KEY;
+	int err = settings_save_one(key, storage, sizeof(*storage));
+
+	if (err) {
+		LOG_ERR("Failed to save display theme err=%d", err);
+		return err;
+	}
+
+	LOG_INF("Stored display theme rgb=(%u,%u,%u)",
+		storage->red, storage->green, storage->blue);
+	return 0;
+}
+
+static void display_theme_set_rgb(uint8_t red,
+				      uint8_t green,
+	uint8_t blue,
+				      bool persist)
+{
+	disp.ui.theme_color = lv_color_make(red, green, blue);
+
+	if (persist) {
+		display_theme_storage.red = red;
+		display_theme_storage.green = green;
+		display_theme_storage.blue = blue;
+		display_theme_storage.valid_marker = 1U;
+		disp.theme_storage_loaded = true;
+		disp.theme_storage_dirty = true;
+		k_work_reschedule(&disp.theme_save_work, DISPLAY_THEME_SAVE_DELAY);
+	}
+}
+
+static void display_theme_apply_loaded_storage(void)
+{
+	if (!disp.theme_storage_loaded ||
+	    (display_theme_storage.valid_marker != 1U)) {
+		return;
+	}
+
+	display_theme_set_rgb(display_theme_storage.red,
+			      display_theme_storage.green,
+			      display_theme_storage.blue,
+			      false);
+}
+
+static void display_theme_save_work_fn(struct k_work *work)
+{
+	struct display_theme_storage storage;
+
+	ARG_UNUSED(work);
+
+	if (!disp.theme_storage_dirty || !disp.theme_storage_loaded) {
+		return;
+	}
+
+	disp.theme_storage_dirty = false;
+	storage = display_theme_storage;
+	(void)display_theme_store(&storage);
+}
+
+static int settings_set(const char *key, size_t len_rd,
+			settings_read_cb read_cb, void *cb_arg)
+{
+	ssize_t rc;
+
+	if (strcmp(key, DISPLAY_THEME_STORAGE_KEY) != 0) {
+		return 0;
+	}
+
+	if (len_rd != sizeof(display_theme_storage)) {
+		disp.theme_storage_loaded = false;
+		return 0;
+	}
+
+	rc = read_cb(cb_arg, &display_theme_storage, sizeof(display_theme_storage));
+	disp.theme_storage_loaded = (rc == sizeof(display_theme_storage));
+
+	return 0;
+}
+
+SETTINGS_STATIC_HANDLER_DEFINE(display,
+			       MODULE_NAME,
+			       NULL,
+			       settings_set,
+			       NULL,
+			       NULL);
+
 static void display_schedule_update(k_timeout_t delay)
 {
 #ifdef CONFIG_LV_Z_RUN_LVGL_ON_WORKQUEUE
@@ -166,6 +271,12 @@ static void display_sleep(void)
 
 	(void)k_work_cancel_delayable(&disp.update_work);
 	(void)k_work_cancel_delayable(&disp.idle_work);
+	(void)k_work_cancel_delayable(&disp.theme_save_work);
+
+	if (disp.theme_storage_dirty && disp.theme_storage_loaded) {
+		disp.theme_storage_dirty = false;
+		(void)display_theme_store(&display_theme_storage);
+	}
 
 	err = display_blanking_on(disp.dev);
 	if (err)
@@ -553,7 +664,9 @@ static int display_init(void)
 
 	k_work_init_delayable(&disp.update_work, display_update_work_fn);
 	k_work_init_delayable(&disp.idle_work, display_idle_timeout_fn);
+	k_work_init_delayable(&disp.theme_save_work, display_theme_save_work_fn);
 	disp.tick_count = 0U;
+	display_theme_apply_loaded_storage();
 
 	err = display_blanking_off(disp.dev);
 	if (err)
@@ -631,6 +744,20 @@ static bool handle_keyboard_led_event(const struct keyboard_led_event *event)
 	return false;
 }
 
+static bool handle_display_theme_event(const struct display_theme_event *event)
+{
+	display_theme_set_rgb(event->red, event->green, event->blue, true);
+
+	if (!disp.initialized || !display_is_active()) {
+		return false;
+	}
+
+	lvgl_lock();
+	display_refresh_status_bar_locked();
+	lvgl_unlock();
+	return false;
+}
+
 /* 任意按钮事件都可点亮屏幕并重置 1 分钟空闲计时。 */
 static bool handle_button_event(const struct button_event *event)
 {
@@ -654,6 +781,18 @@ static bool handle_wake_up_event(void)
 
 static bool handle_module_state_event(const struct module_state_event *event)
 {
+	if (check_state(event, MODULE_ID(settings_loader), MODULE_STATE_READY)) {
+		display_theme_apply_loaded_storage();
+
+		if (disp.initialized && display_is_active()) {
+			lvgl_lock();
+			display_refresh_status_bar_locked();
+			lvgl_unlock();
+		}
+
+		return false;
+	}
+
 	if (!check_state(event, MODULE_ID(main), MODULE_STATE_READY))
 		return false;
 
@@ -683,6 +822,9 @@ static bool app_event_handler(const struct app_event_header *aeh)
 	if (is_keyboard_led_event(aeh))
 		return handle_keyboard_led_event(cast_keyboard_led_event(aeh));
 
+	if (is_display_theme_event(aeh))
+		return handle_display_theme_event(cast_display_theme_event(aeh));
+
 	if (is_button_event(aeh))
 		return handle_button_event(cast_button_event(aeh));
 
@@ -699,6 +841,7 @@ static bool app_event_handler(const struct app_event_header *aeh)
 APP_EVENT_LISTENER(MODULE, app_event_handler);
 APP_EVENT_SUBSCRIBE(MODULE, module_state_event);
 APP_EVENT_SUBSCRIBE(MODULE, battery_status_event);
+APP_EVENT_SUBSCRIBE(MODULE, display_theme_event);
 APP_EVENT_SUBSCRIBE(MODULE, mode_event);
 APP_EVENT_SUBSCRIBE(MODULE, keyboard_led_event);
 APP_EVENT_SUBSCRIBE(MODULE, button_event);

src/modules/hid_host_command_module.c

@@ -0,0 +1,121 @@
+#include <zephyr/sys/byteorder.h>
+
+#include <app_event_manager.h>
+
+#define MODULE hid_host_command
+#include <caf/events/module_state_event.h>
+
+#include "display_theme_event.h"
+#include "hid_host_ack_event.h"
+#include "hid_host_command_error_event.h"
+#include "hid_host_command_event.h"
+#include "hid_host_command_protocol.h"
+#include "time_manager.h"
+#include "time_sync_event.h"
+
+#include <zephyr/logging/log.h>
+LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
+
+static bool module_ready;
+
+static bool handle_theme_color_command(const struct hid_host_command_event *event)
+{
+	if (event->data_len < HID_HOST_CMD_THEME_PARAM_SIZE) {
+		hid_host_command_error_event_submit(
+			event->transport,
+			event->cmd,
+			HID_HOST_COMMAND_ERROR_INVALID_LENGTH);
+		return false;
+	}
+
+	display_theme_event_submit(event->data[0], event->data[1], event->data[2]);
+	hid_host_ack_event_submit(event->transport, event->cmd);
+	return false;
+}
+
+static bool handle_time_sync_command(const struct hid_host_command_event *event)
+{
+	struct time_sync_update update = {
+		.timezone_min = 0,
+		.accuracy_ms = 0,
+		.source = TIME_SYNC_SOURCE_HID,
+	};
+
+	if (event->data_len != HID_HOST_CMD_TIME_SYNC_PARAM_SIZE) {
+		hid_host_command_error_event_submit(
+			event->transport,
+			event->cmd,
+			HID_HOST_COMMAND_ERROR_INVALID_LENGTH);
+		return false;
+	}
+
+	if (!time_manager_is_ready()) {
+		hid_host_command_error_event_submit(
+			event->transport,
+			event->cmd,
+			HID_HOST_COMMAND_ERROR_NOT_READY);
+		return false;
+	}
+
+	update.utc_ms = sys_get_le64(event->data);
+	if (update.utc_ms == 0U) {
+		hid_host_command_error_event_submit(
+			event->transport,
+			event->cmd,
+			HID_HOST_COMMAND_ERROR_INVALID_PARAM);
+		return false;
+	}
+
+	time_sync_event_submit(&update);
+	hid_host_ack_event_submit(event->transport, event->cmd);
+	return false;
+}
+
+static bool handle_hid_host_command_event(const struct hid_host_command_event *event)
+{
+	if (!module_ready) {
+		hid_host_command_error_event_submit(
+			event->transport,
+			event->cmd,
+			HID_HOST_COMMAND_ERROR_NOT_READY);
+		return false;
+	}
+
+	switch (event->cmd) {
+	case HID_HOST_CMD_ID_THEME_COLOR:
+		return handle_theme_color_command(event);
+	case HID_HOST_CMD_ID_TIME_SYNC:
+		return handle_time_sync_command(event);
+	default:
+		hid_host_command_error_event_submit(
+			event->transport,
+			event->cmd,
+			HID_HOST_COMMAND_ERROR_UNKNOWN_CMD);
+		return false;
+	}
+}
+
+static bool app_event_handler(const struct app_event_header *aeh)
+{
+	if (is_module_state_event(aeh)) {
+		const struct module_state_event *event = cast_module_state_event(aeh);
+
+		if (check_state(event, MODULE_ID(main), MODULE_STATE_READY)) {
+			module_ready = true;
+			module_set_state(MODULE_STATE_READY);
+		}
+
+		return false;
+	}
+
+	if (is_hid_host_command_event(aeh)) {
+		return handle_hid_host_command_event(cast_hid_host_command_event(aeh));
+	}
+
+	__ASSERT_NO_MSG(false);
+	return false;
+}
+
+APP_EVENT_LISTENER(MODULE, app_event_handler);
+APP_EVENT_SUBSCRIBE(MODULE, module_state_event);
+APP_EVENT_SUBSCRIBE(MODULE, hid_host_command_event);

src/modules/hid_tx_manager_module.c

@@ -10,6 +10,7 @@
 
 #include "hid_report_descriptor.h"
 #include "hid_boot_event.h"
+#include "hid_host_ack_event.h"
 #include "hid_report_event.h"
 #include "hid_tx_done_event.h"
 #include "hid_tx_event.h"
@@ -26,14 +27,15 @@ enum hid_tx_flag {
 	HID_TX_FLAG_IN_FLIGHT,
 	HID_TX_FLAG_BOOT_VALID,
 	HID_TX_FLAG_BOOT_DIRTY,
-	HID_TX_FLAG_NKRO_VALID,
-	HID_TX_FLAG_NKRO_DIRTY,
+	HID_TX_FLAG_KEYBOARD_VALID,
+	HID_TX_FLAG_KEYBOARD_DIRTY,
 	HID_TX_FLAG_VENDOR_VALID,
 	HID_TX_FLAG_VENDOR_DIRTY,
 };
 
 struct hid_tx_item {
 	enum hid_tx_kind kind;
+	enum hid_tx_route route;
 	size_t len;
 	uint8_t data[HID_TX_MAX_DATA];
 };
@@ -41,7 +43,7 @@ struct hid_tx_item {
 struct hid_tx_ctx {
 	atomic_t flags;
 	struct hid_tx_item boot_state;
-	struct hid_tx_item nkro_state;
+	struct hid_tx_item keyboard_state;
 	struct hid_tx_item vendor_state;
 	struct hid_tx_item inflight_item;
 	mode_type_t active_mode;
@@ -51,10 +53,13 @@ static struct hid_tx_ctx tx = {
 	.active_mode = MODE_TYPE_COUNT,
 };
 
-K_MSGQ_DEFINE(hid_tx_queue_msgq, sizeof(struct hid_tx_item), HID_TX_QUEUE_SIZE, 4);
+K_MSGQ_DEFINE(hid_tx_consumer_msgq, sizeof(struct hid_tx_item), HID_TX_QUEUE_SIZE, 4);
+K_MSGQ_DEFINE(hid_tx_ack_msgq, sizeof(struct hid_tx_item), HID_TX_QUEUE_SIZE, 4);
+K_MSGQ_DEFINE(hid_tx_misc_msgq, sizeof(struct hid_tx_item), HID_TX_QUEUE_SIZE, 4);
 
 static bool hid_tx_item_store(struct hid_tx_item *item,
 			      enum hid_tx_kind kind,
+			      enum hid_tx_route route,
 			      const uint8_t *data,
 			      size_t len)
 {
@@ -64,6 +69,7 @@ static bool hid_tx_item_store(struct hid_tx_item *item,
 	}
 
 	item->kind = kind;
+	item->route = route;
 	item->len = len;
 	if ((len > 0U) && (data != NULL)) {
 		memcpy(item->data, data, len);
@@ -72,15 +78,19 @@ static bool hid_tx_item_store(struct hid_tx_item *item,
 	return true;
 }
 
-static bool hid_tx_queue_push(enum hid_tx_kind kind, const uint8_t *data, size_t len)
+static bool hid_tx_queue_push(struct k_msgq *queue,
+			      enum hid_tx_kind kind,
+			      enum hid_tx_route route,
+			      const uint8_t *data,
+			      size_t len)
 {
 	struct hid_tx_item item;
 
-	if (!hid_tx_item_store(&item, kind, data, len)) {
+	if (!hid_tx_item_store(&item, kind, route, data, len)) {
 		return false;
 	}
 
-	if (k_msgq_put(&hid_tx_queue_msgq, &item, K_NO_WAIT)) {
+	if (k_msgq_put(queue, &item, K_NO_WAIT)) {
 		LOG_WRN("Drop HID tx kind=%u len=%u: queue full", kind, len);
 		return false;
 	}
@@ -88,11 +98,16 @@ static bool hid_tx_queue_push(enum hid_tx_kind kind, const uint8_t *data, size_t
 	return true;
 }
 
+static bool hid_tx_auto_route_available(void)
+{
+	return (tx.active_mode == MODE_TYPE_USB) || (tx.active_mode == MODE_TYPE_BLE);
+}
+
 static bool hid_tx_dispatch_item(const struct hid_tx_item *item)
 {
 	tx.inflight_item = *item;
 	atomic_set_bit(&tx.flags, HID_TX_FLAG_IN_FLIGHT);
-	hid_tx_event_submit(item->kind, item->data, item->len);
+	hid_tx_event_submit_routed(item->kind, item->route, item->data, item->len);
 	return true;
 }
 
@@ -105,33 +120,44 @@ static void dispatch_next_if_possible(void)
 		return;
 	}
 
-	if ((tx.active_mode != MODE_TYPE_USB) && (tx.active_mode != MODE_TYPE_BLE)) {
+	if (hid_tx_auto_route_available() &&
+	    atomic_test_bit(&tx.flags, HID_TX_FLAG_KEYBOARD_DIRTY) &&
+	    atomic_test_bit(&tx.flags, HID_TX_FLAG_KEYBOARD_VALID)) {
+		atomic_clear_bit(&tx.flags, HID_TX_FLAG_KEYBOARD_DIRTY);
+		(void)hid_tx_dispatch_item(&tx.keyboard_state);
 		return;
 	}
 
-	if (atomic_test_bit(&tx.flags, HID_TX_FLAG_NKRO_DIRTY) &&
-	    atomic_test_bit(&tx.flags, HID_TX_FLAG_NKRO_VALID)) {
-		atomic_clear_bit(&tx.flags, HID_TX_FLAG_NKRO_DIRTY);
-		(void)hid_tx_dispatch_item(&tx.nkro_state);
-		return;
-	}
-
-	if (atomic_test_bit(&tx.flags, HID_TX_FLAG_BOOT_DIRTY) &&
+	if (hid_tx_auto_route_available() &&
+	    atomic_test_bit(&tx.flags, HID_TX_FLAG_BOOT_DIRTY) &&
 	    atomic_test_bit(&tx.flags, HID_TX_FLAG_BOOT_VALID)) {
 		atomic_clear_bit(&tx.flags, HID_TX_FLAG_BOOT_DIRTY);
 		(void)hid_tx_dispatch_item(&tx.boot_state);
 		return;
 	}
 
-	if (!k_msgq_get(&hid_tx_queue_msgq, &item, K_NO_WAIT)) {
+	if (hid_tx_auto_route_available() &&
+	    !k_msgq_get(&hid_tx_consumer_msgq, &item, K_NO_WAIT)) {
 		(void)hid_tx_dispatch_item(&item);
 		return;
 	}
 
-	if (atomic_test_bit(&tx.flags, HID_TX_FLAG_VENDOR_DIRTY) &&
+	if (hid_tx_auto_route_available() &&
+	    atomic_test_bit(&tx.flags, HID_TX_FLAG_VENDOR_DIRTY) &&
 	    atomic_test_bit(&tx.flags, HID_TX_FLAG_VENDOR_VALID)) {
 		atomic_clear_bit(&tx.flags, HID_TX_FLAG_VENDOR_DIRTY);
 		(void)hid_tx_dispatch_item(&tx.vendor_state);
+		return;
+	}
+
+	if (!k_msgq_get(&hid_tx_ack_msgq, &item, K_NO_WAIT)) {
+		(void)hid_tx_dispatch_item(&item);
+		return;
+	}
+
+	if (hid_tx_auto_route_available() &&
+	    !k_msgq_get(&hid_tx_misc_msgq, &item, K_NO_WAIT)) {
+		(void)hid_tx_dispatch_item(&item);
 	}
 }
 
@@ -156,10 +182,23 @@ static bool handle_mode_event(const struct mode_event *event)
 	return false;
 }
 
+static enum hid_tx_route hid_tx_route_from_transport(enum hid_host_transport transport)
+{
+	switch (transport) {
+	case HID_HOST_TRANSPORT_USB:
+		return HID_TX_ROUTE_USB;
+	case HID_HOST_TRANSPORT_BLE:
+		return HID_TX_ROUTE_BLE;
+	default:
+		return HID_TX_ROUTE_AUTO;
+	}
+}
+
 static bool handle_hid_boot_request_event(const struct hid_boot_event *event)
 {
 	(void)hid_tx_item_store(&tx.boot_state,
 				HID_TX_KIND_BOOT,
+				HID_TX_ROUTE_AUTO,
 				hid_boot_event_get_data(event),
 				hid_boot_event_get_size(event));
 	atomic_set_bit(&tx.flags, HID_TX_FLAG_BOOT_VALID);
@@ -174,21 +213,51 @@ static bool handle_hid_report_request_event(const struct hid_report_event *event
 	size_t len = hid_report_event_get_size(event);
 
 	if ((len > 0U) && (data[0] == REPORT_ID_KEYBOARD)) {
-		(void)hid_tx_item_store(&tx.nkro_state, HID_TX_KIND_REPORT, data, len);
-		atomic_set_bit(&tx.flags, HID_TX_FLAG_NKRO_VALID);
-		atomic_set_bit(&tx.flags, HID_TX_FLAG_NKRO_DIRTY);
+		(void)hid_tx_item_store(&tx.keyboard_state,
+					HID_TX_KIND_REPORT,
+					HID_TX_ROUTE_AUTO,
+					data, len);
+		atomic_set_bit(&tx.flags, HID_TX_FLAG_KEYBOARD_VALID);
+		atomic_set_bit(&tx.flags, HID_TX_FLAG_KEYBOARD_DIRTY);
+	} else if ((len > 0U) && (data[0] == REPORT_ID_CONSUMER)) {
+		(void)hid_tx_queue_push(&hid_tx_consumer_msgq,
+					HID_TX_KIND_REPORT,
+					HID_TX_ROUTE_AUTO,
+					data, len);
 	} else if ((len > 0U) && (data[0] == REPORT_ID_VENDOR)) {
-		(void)hid_tx_item_store(&tx.vendor_state, HID_TX_KIND_REPORT, data, len);
+		(void)hid_tx_item_store(&tx.vendor_state,
+					HID_TX_KIND_REPORT,
+					HID_TX_ROUTE_AUTO,
+					data, len);
 		atomic_set_bit(&tx.flags, HID_TX_FLAG_VENDOR_VALID);
 		atomic_set_bit(&tx.flags, HID_TX_FLAG_VENDOR_DIRTY);
 	} else {
-		(void)hid_tx_queue_push(HID_TX_KIND_REPORT, data, len);
+		(void)hid_tx_queue_push(&hid_tx_misc_msgq,
+					HID_TX_KIND_REPORT,
+					HID_TX_ROUTE_AUTO,
+					data, len);
 	}
 
 	dispatch_next_if_possible();
 	return true;
 }
 
+static bool handle_hid_host_ack_event(const struct hid_host_ack_event *event)
+{
+	uint8_t report[1U + HID_VENDOR_ACK_PAYLOAD_SIZE] = {
+		REPORT_ID_VENDOR_CMD,
+		event->cmd,
+	};
+
+	(void)hid_tx_queue_push(&hid_tx_ack_msgq,
+				HID_TX_KIND_REPORT,
+				hid_tx_route_from_transport(event->transport),
+				report,
+				sizeof(report));
+	dispatch_next_if_possible();
+	return true;
+}
+
 static bool handle_hid_tx_done_event(const struct hid_tx_done_event *event)
 {
 	if (!atomic_test_bit(&tx.flags, HID_TX_FLAG_IN_FLIGHT)) {
@@ -227,6 +296,10 @@ static bool app_event_handler(const struct app_event_header *aeh)
 		return handle_hid_tx_done_event(cast_hid_tx_done_event(aeh));
 	}
 
+	if (is_hid_host_ack_event(aeh)) {
+		return handle_hid_host_ack_event(cast_hid_host_ack_event(aeh));
+	}
+
 	__ASSERT_NO_MSG(false);
 	return false;
 }
@@ -236,4 +309,5 @@ APP_EVENT_SUBSCRIBE(MODULE, module_state_event);
 APP_EVENT_SUBSCRIBE(MODULE, mode_event);
 APP_EVENT_SUBSCRIBE_EARLY(MODULE, hid_boot_event);
 APP_EVENT_SUBSCRIBE_EARLY(MODULE, hid_report_event);
+APP_EVENT_SUBSCRIBE(MODULE, hid_host_ack_event);
 APP_EVENT_SUBSCRIBE(MODULE, hid_tx_done_event);

src/modules/time_manager_module.c

@@ -17,7 +17,7 @@
 #include <zephyr/logging/log.h>
 LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
 
-#define TIME_MANAGER_SAVE_DELAY_MS 1000
+#define TIME_MANAGER_SAVE_DELAY    K_HOURS(24)
 #define TIME_MANAGER_STORAGE_KEY   "state"
 
 /*
@@ -58,6 +58,7 @@ static bool time_manager_source_is_valid(enum time_sync_source source)
 	case TIME_SYNC_SOURCE_BLE:
 	case TIME_SYNC_SOURCE_USB:
 	case TIME_SYNC_SOURCE_MANUAL:
+	case TIME_SYNC_SOURCE_HID:
 		return true;
 	default:
 		return false;
@@ -72,8 +73,8 @@ static bool time_manager_timezone_is_valid(int16_t timezone_min)
 
 /*
  * 保存工作在系统工作队列里执行：
- * - 这样 GATT 写回调和事件派发路径都只做内存更新；
- * - 真正可能触发 flash 擦写的 settings_save_one 被挪到异步上下文。
+ * - 这样同步入口只做内存更新；
+ * - flash 写入被节流到 24 小时窗口，降低频繁校时带来的磨损。
  */
 static int time_manager_store_state(const struct time_manager_storage_data *storage)
 {
@@ -144,11 +145,13 @@ static void time_manager_apply_update(const struct time_sync_update *update)
 	k_spin_unlock(&time_ctx.lock, key);
 
 	/*
-	 * 保存延迟 1 秒：
-	 * - 避免未来 BLE/USB 连续校时时反复触发 flash 写入；
-	 * - 也避免在同步入口上下文里直接阻塞等待存储完成。
+	 * 时间同步允许立即生效，但 flash 落盘不要求同步完成后立刻发生。
+	 * 这里将写入节流到 24 小时窗口：只要当前还没有待执行的保存工作，
+	 * 就挂一个延迟保存；后续新的校时只更新内存快照，不反复重置定时器。
 	 */
-	k_work_reschedule(&time_ctx.save_work, K_MSEC(TIME_MANAGER_SAVE_DELAY_MS));
+	if (!k_work_delayable_is_pending(&time_ctx.save_work)) {
+		k_work_schedule(&time_ctx.save_work, TIME_MANAGER_SAVE_DELAY);
+	}
 
 	LOG_INF("Time synchronized src=%u tz=%d utc_ms=%llu acc=%u",
 		update->source,
@@ -269,37 +272,6 @@ static bool handle_time_sync_event(const struct time_sync_event *event)
 	return false;
 }
 
-/*
- * 掉电前尽量把最后一次同步结果落盘：
- * - 如果没有脏数据，立即返回；
- * - 如果有待保存数据，则同步执行一次保存，降低突然掉电时的丢失概率。
- */
-static bool handle_power_down_event(void)
-{
-	struct time_manager_storage_data storage;
-	bool should_store;
-	k_spinlock_key_t key;
-
-	if (!time_manager_is_ready()) {
-		return false;
-	}
-
-	(void)k_work_cancel_delayable(&time_ctx.save_work);
-
-	key = k_spin_lock(&time_ctx.lock);
-	should_store = time_ctx.storage_dirty && time_ctx.has_persisted_time;
-	storage = time_ctx.persisted;
-	time_ctx.storage_dirty = false;
-	k_spin_unlock(&time_ctx.lock, key);
-
-	if (!should_store) {
-		return false;
-	}
-
-	(void)time_manager_store_state(&storage);
-	return false;
-}
-
 /* 仅在 settings_loader 完成后宣布 READY，保证外部读取到的是稳定状态。 */
 static bool handle_module_state_event(const struct module_state_event *event)
 {
@@ -393,10 +365,6 @@ static bool app_event_handler(const struct app_event_header *aeh)
 		return handle_time_sync_event(cast_time_sync_event(aeh));
 	}
 
-	if (is_power_down_event(aeh)) {
-		return handle_power_down_event();
-	}
-
 	__ASSERT_NO_MSG(false);
 	return false;
 }
@@ -404,4 +372,3 @@ static bool app_event_handler(const struct app_event_header *aeh)
 APP_EVENT_LISTENER(MODULE, app_event_handler);
 APP_EVENT_SUBSCRIBE(MODULE, module_state_event);
 APP_EVENT_SUBSCRIBE(MODULE, time_sync_event);
-APP_EVENT_SUBSCRIBE_EARLY(MODULE, power_down_event);

src/modules/usb_hid_module.c

@@ -14,6 +14,7 @@
 
 #include "hid_report_descriptor.h"
 #include "hid_boot_event.h"
+#include "hid_host_command_event.h"
 #include "hid_protocol_event.h"
 #include "hid_tx_done_event.h"
 #include "hid_tx_event.h"
@@ -106,6 +107,19 @@ static bool usb_hid_should_be_active(void)
 	return g_usb_hid.policy.usb_mode_selected && !g_usb_hid.policy.pm_suspended;
 }
 
+static bool usb_hid_should_handle_tx_event(const struct hid_tx_event *event)
+{
+	switch (hid_tx_event_get_route(event)) {
+	case HID_TX_ROUTE_AUTO:
+		return g_usb_hid.policy.usb_mode_selected;
+	case HID_TX_ROUTE_USB:
+		return true;
+	case HID_TX_ROUTE_BLE:
+	default:
+		return false;
+	}
+}
+
 static struct usb_hid_iface *usb_hid_iface_from_dev(const struct device *dev)
 {
 	if (dev == g_usb_hid.boot.dev)
@@ -205,6 +219,35 @@ static bool try_extract_vendor_mask(const struct device *dev,
 	return true;
 }
 
+static bool try_extract_host_command(const struct device *dev,
+				     uint16_t len,
+				     const uint8_t *buf,
+				     uint8_t *cmd,
+				     const uint8_t **data,
+				     size_t *data_len)
+{
+	if ((buf == NULL) || (len < 1U)) {
+		return false;
+	}
+
+	if (dev != g_usb_hid.nkro.dev) {
+		return false;
+	}
+
+	if (buf[0] != REPORT_ID_VENDOR_CMD) {
+		return false;
+	}
+
+	if ((len - 1U) != HID_HOST_CMD_OUTPUT_PAYLOAD_SIZE) {
+		return false;
+	}
+
+	*cmd = buf[1];
+	*data = &buf[2];
+	*data_len = len - 2U;
+	return true;
+}
+
 static int hid_stub_get_report(const struct device *dev,
 							   uint8_t type, uint8_t id,
 							   uint16_t len, uint8_t *buf)
@@ -226,6 +269,9 @@ static int hid_stub_set_report(const struct device *dev,
 
 	const uint8_t *mask_data;
 	size_t mask_len;
+	uint8_t cmd;
+	const uint8_t *cmd_data;
+	size_t cmd_len;
 
 	if (try_extract_vendor_mask(dev, len, buf, &mask_data, &mask_len))
 	{
@@ -234,6 +280,13 @@ static int hid_stub_set_report(const struct device *dev,
 		return 0;
 	}
 
+	if (try_extract_host_command(dev, len, buf, &cmd, &cmd_data, &cmd_len))
+	{
+		LOG_INF("hid_stub_set_report vendor cmd=0x%02x len=%u", cmd, cmd_len);
+		hid_host_command_event_submit(HID_HOST_TRANSPORT_USB, cmd, cmd_data, cmd_len);
+		return 0;
+	}
+
 	if (!should_handle_led_input_from_dev(dev))
 	{
 		return 0;
@@ -313,18 +366,30 @@ static void hid_stub_input_done(const struct device *dev, const uint8_t *report)
 }
 
 static void hid_stub_output_report(const struct device *dev, uint16_t len, const uint8_t *buf)
-{
-	if (!should_handle_led_input_from_dev(dev))
 {
 	const uint8_t *mask_data;
 	size_t mask_len;
+	uint8_t cmd;
+	const uint8_t *cmd_data;
+	size_t cmd_len;
 
 	if (try_extract_vendor_mask(dev, len, buf, &mask_data, &mask_len))
 	{
 		LOG_INF("hid_stub_output_report vendor mask len=%u", mask_len);
 		hid_vendor_mask_event_submit(mask_data, mask_len);
+		return;
 	}
 
+	if (try_extract_host_command(dev, len, buf, &cmd, &cmd_data, &cmd_len))
+	{
+		LOG_INF("hid_stub_output_report vendor cmd=0x%02x len=%u", cmd, cmd_len);
+		hid_host_command_event_submit(HID_HOST_TRANSPORT_USB,
+					      cmd, cmd_data, cmd_len);
+		return;
+	}
+
+	if (!should_handle_led_input_from_dev(dev))
+	{
 		return;
 	}
 
@@ -711,7 +776,7 @@ static bool handle_wake_up_event(void)
 
 static bool handle_hid_tx_event(const struct hid_tx_event *event)
 {
-	if (!g_usb_hid.policy.usb_mode_selected)
+	if (!usb_hid_should_handle_tx_event(event))
 	{
 		return false;
 	}
@@ -793,7 +858,8 @@ static bool handle_hid_tx_event(const struct hid_tx_event *event)
 
 	if ((report_id != REPORT_ID_KEYBOARD) &&
 		(report_id != REPORT_ID_CONSUMER) &&
-		(report_id != REPORT_ID_VENDOR))
+		(report_id != REPORT_ID_VENDOR) &&
+		(report_id != REPORT_ID_VENDOR_CMD))
 	{
 		submit_usb_tx_done(HID_TX_KIND_REPORT, false);
 		return false;