update mic mute button for only support mic mute and dnr enable

sw_usb_audio/app_usb_aud_fosi_c1/src/extensions/audiohw.xc

@@ -118,8 +118,6 @@ timer tm;
 #define C1_KEY_LONG_TICKS     50
 // 改动原因：规格要求 mic 键长按 1.5s 切换 g_dnr_enable（AI 通话降噪/DNR）；20ms*75=1.5s，与 mode 键 LONG 解耦，避免误触。
 #define C1_KEY_MIC_DNR_LONG_TICKS 75
-// 改动原因：双击第二下需在首击释放后约 500ms 内按下，否则判为单击静音；20ms*25=500ms。
-#define C1_MIC_DOUBLE_DEFER_TICKS 25
 // 改动原因：新增C1模式持久化文件路径，使用LittleFS保存mode按键状态，保证断电重启后可恢复。
 #define C1_MODE_VALUE_PATH    "c1_mode_value"
 
@@ -130,9 +128,8 @@ timer tm;
 
 // 改动原因：DAC 音量单独持久化路径，与 mode 的 c1_mode 文件分离，避免互相覆盖且便于维护。
 #define C1_DAC_VOL_INFO_PATH  "c1_dac_vol"
-// 改动原因：麦克风按键三种状态（静音/变声/DNR）均需断电保存，上电恢复并同步LED显示。
+// 改动原因：规格表仅保留静音与 DNR 断电记忆；mic 指示灯只反映静音（红灯/灭），DNR 由 APP 显示。
 #define C1_MIC_MUTE_INFO_PATH  "c1_mic_mute"
-#define C1_VOICE_FX_INFO_PATH  "c1_voice_fx"
 #define C1_DNR_EN_INFO_PATH    "c1_dnr_en"
 // 改动原因：与 FORMAT_DELAY(30000000) 相同时间基准（get_reference_time 滴答），用户停止调节 300ms 后再写 Flash，减少磨损并满足需求。
 #define C1_DAC_VOL_SAVE_DELAY (30000000)
@@ -292,6 +289,7 @@ unsigned g_led_blink_is_white = 0;
 extern unsigned char g_hid_pass_data[64];
 static unsigned g_last_dac_vol = 0xFF;  // 改动原因：改为检测g_dac_vol的变化，初始化为0xFF表示未初始化
 static unsigned g_last_mute_switch = 0xFF;  // 改动原因：检测静音开关变化并上报0xB2，0xFF=未初始化
+static unsigned g_last_dnr_enable = 0xFF;   // 改动原因：检测AI通话降噪(g_dnr_enable)变化并上报0xB5，0xFF=未初始化
 static unsigned g_last_adc_loop = 0xFF;     // 改动原因：检测监听开关(g_adc_loop)变化并上报0xB4，0xFF=未初始化
 static unsigned g_last_audio_type = 0xFF;     // 改动原因：上次检测到的音频类型，初始化为0xFF表示未初始化，用于LED颜色判断
 static unsigned g_last_led_status = 0xFF;   // 上次检测到的LED状态，初始化为0xFF表示未初始化
@@ -567,12 +565,8 @@ void AudioHwRemote2(streaming chanend c, client interface i2c_master_if i2c, cli
     unsigned vol_down_press_ticks = 0;
     unsigned mic_mute_press_ticks = 0;
     unsigned vol_up_press_ticks = 0;
-    // 改动原因：mic 键双击需延迟首轮短按的静音动作，用 stage1=等超时单击 / stage2=已收到第二下按下等释放；与长按 DNR 互斥靠 mic_dnr_long_fired。
+    // 改动原因：规格取消双击变声；mic_dnr_long_fired 用于长按 DNR 后屏蔽同次松手的短按静音。
-    unsigned mic_dbl_stage = 0;
-    unsigned mic_defer_left = 0;
     unsigned mic_dnr_long_fired = 0;
-    // 改动原因：变声/美声仅按键+灯，tile0 保存状态供 set_mic_voice_fx 下发 mic 橙灯。
-    unsigned c1_mic_voice_fx = 0;
     // 改动原因：mic mute红灯通过interface下发到tile1，仅在状态变化时发送，减少无意义跨tile调用。
     unsigned last_mute_switch_for_led = 0xFFFFFFFF;
     unsigned host_os = 0;
@@ -649,32 +643,24 @@ void AudioHwRemote2(streaming chanend c, client interface i2c_master_if i2c, cli
     }
 
 
-    // 改动原因：三种 mic 状态（静音/变声/DNR）均需断电保存，上电从 Flash 读取并恢复；无效値（非 0/1）时使用默认値。
+    // 改动原因：规格仅保留静音与 DNR 断电记忆；上电恢复后 mic 灯只同步静音态（红灯/灭）。
     {
         unsigned char loaded_mute = load_value(C1_MIC_MUTE_INFO_PATH);
         unsigned init_mute = (loaded_mute == 0 || loaded_mute == 1) ? (unsigned)loaded_mute : 1u;
         SET_SHARED_GLOBAL(g_mute_switch, init_mute);
     }
-    {
-        unsigned char loaded_vfx = load_value(C1_VOICE_FX_INFO_PATH);
-        c1_mic_voice_fx = (loaded_vfx == 1) ? 1u : 0u;
-    }
     {
         unsigned char loaded_dnr = load_value(C1_DNR_EN_INFO_PATH);
         unsigned init_dnr = (loaded_dnr == 0 || loaded_dnr == 1) ? (unsigned)loaded_dnr : 1u;
         SET_SHARED_GLOBAL(g_dnr_enable, init_dnr);
     }
 
-    // 改动原因：tile1 上电已硬件全灯；先下发三种mic状态再下发 mode，使首帧 apply 时 mic 已正确。
+    // 改动原因：tile1 上电已硬件全灯；先下发 mic 静音灯再下发 mode，使首帧 apply 时 mic 区正确。
     {
         unsigned init_mute_for_led;
-        unsigned init_dnr_for_led;
         GET_SHARED_GLOBAL(init_mute_for_led, g_mute_switch);
-        GET_SHARED_GLOBAL(init_dnr_for_led, g_dnr_enable);
         i_c1_led_ctrl.set_mic_mute_state(init_mute_for_led);
         i_c1_led_ctrl.set_mode_led_color(c1_mode_to_tile_mode_led_code(c1_mode));
-        i_c1_led_ctrl.set_mic_voice_fx(c1_mic_voice_fx);
-        i_c1_led_ctrl.set_mic_dnr_state(init_dnr_for_led);
         last_mute_switch_for_led = init_mute_for_led;
     }
 
@@ -921,51 +907,8 @@ void AudioHwRemote2(streaming chanend c, client interface i2c_master_if i2c, cli
                     vol_up_pressed = ((button_state & C1_KEY_VOL_UP_MASK) == 0);
                     pressed_count = mode_pressed + vol_down_pressed + mic_mute_pressed + vol_up_pressed;
 
-                    // 改动原因：mic 首击短按后延迟 500ms 再静音，以便识别双击；仅 mic 松开时递减 mic_defer_left，到 0 执行单击静音。
-                    if (mic_dbl_stage == 1 && mic_defer_left > 0)
-                    {
-                        unsigned mic_released_now = ((button_state & C1_KEY_MIC_MUTE_MASK) != 0);
-                        if (mic_released_now)
-                        {
-                            mic_defer_left--;
-                            if (mic_defer_left == 0)
-                            {
-                                unsigned current_mute_switch;
-                                unsigned effective_adc_vol;
-                                GET_SHARED_GLOBAL(effective_adc_vol, g_adc_vol);
-                                GET_SHARED_GLOBAL(current_mute_switch, g_mute_switch);
-                                current_mute_switch = (current_mute_switch == 0) ? 1 : 0;
-
-                                if (current_mute_switch == 0)
-                                {
-                                    mic_volume(0, i2c);
-                                    // 改动原因：同步 old_adc_vol，避免定时器下一轮仍按旧值误判或与按键写入冲突。
-                                    old_adc_vol = 0;
-                                }
-                                else
-                                {
-                                    mic_volume(effective_adc_vol, i2c);
-                                    old_adc_vol = effective_adc_vol;
-                                }
-                                SET_SHARED_GLOBAL(g_mute_switch, current_mute_switch);
-                                // 改动原因：静音状态变化后立即保存到Flash，保证断电后恢复正确的静音灯状态。
-                                save_value(C1_MIC_MUTE_INFO_PATH, (unsigned char)current_mute_switch);
-                                i_c1_led_ctrl.set_mic_mute_state(current_mute_switch);
-                                last_mute_switch_for_led = current_mute_switch;
-                                debug_printf("C1 key mic mute toggle (deferred single): %d\n", current_mute_switch);
-                                mic_dbl_stage = 0;
-                            }
-                        }
-                    }
-
                     if (pressed_count == 1)
                     {
-                        // 改动原因：mic 双击等待期间若用户去按 mode/音量键，应取消延迟单击静音，避免误切 g_mute_switch。
-                        if (!mic_mute_pressed)
-                        {
-                            mic_dbl_stage = 0;
-                            mic_defer_left = 0;
-                        }
                         if (mode_pressed)
                         {
                             mode_press_ticks++;
@@ -984,22 +927,14 @@ void AudioHwRemote2(streaming chanend c, client interface i2c_master_if i2c, cli
                         }
                         else if (mic_mute_pressed)
                         {
-                            // 改动原因：双击窗口内第二下按下，取消延迟单击静音，改为等待释放后判双击变声。
-                            if (mic_dbl_stage == 1)
-                            {
-                                mic_defer_left = 0;
-                                mic_dbl_stage = 2;
-                            }
                             mic_mute_press_ticks++;
-                            // 改动原因：按住满 1.5s 翻转 g_dnr_enable，extra_i2s 中 GET_SHARED_GLOBAL 决定是否走 DNR；松手时靠 mic_dnr_long_fired 屏蔽短按/双击。
+                            // 改动原因：规格长按1.5s切换AI通话降噪，无指示灯；保存Flash；g_dnr_enable变化由定时器路径HID 0xB5上报APP。
                             if (mic_mute_press_ticks == C1_KEY_MIC_DNR_LONG_TICKS)
                             {
                                 unsigned dnr_enable;
                                 GET_SHARED_GLOBAL(dnr_enable, g_dnr_enable);
                                 dnr_enable = (dnr_enable != 0) ? 0 : 1;
                                 SET_SHARED_GLOBAL(g_dnr_enable, dnr_enable);
-                                // 改动原因：DNR状态变化后立即下发LED（开亮蓝灯/关灯），并保存到Flash供断电恢复。
-                                i_c1_led_ctrl.set_mic_dnr_state(dnr_enable);
                                 save_value(C1_DNR_EN_INFO_PATH, (unsigned char)dnr_enable);
                                 mic_dnr_long_fired = 1;
                                 debug_printf("C1 mic DNR toggle (hold 1.5s): %d\n", dnr_enable);
@@ -1056,33 +991,34 @@ void AudioHwRemote2(streaming chanend c, client interface i2c_master_if i2c, cli
                                 }
                             }
 
-                            // 改动原因：mic：短按静音延迟单击（防双击）；双击变声 mic 橙灯；长按1.5s 切 g_dnr_enable 无灯；长按与短/双互斥。
+                            // 改动原因：规格短按立即切换静音（红灯/灭灯）；长按1.5s已切DNR则屏蔽同次松手短按。
                             {
                                 unsigned mic_snap = mic_mute_press_ticks;
                                 if (mic_snap > 0)
                                 {
-                                    if ((mic_snap >= C1_KEY_MIC_DNR_LONG_TICKS) || mic_dnr_long_fired)
+                                    if ((mic_snap >= C1_KEY_SHORT_TICKS) && (mic_snap < C1_KEY_MIC_DNR_LONG_TICKS) && !mic_dnr_long_fired)
                                     {
-                                        if (mic_dbl_stage == 2)
+                                        unsigned current_mute_switch;
-                                            mic_dbl_stage = 0;
+                                        unsigned effective_adc_vol;
-                                    }
+                                        GET_SHARED_GLOBAL(effective_adc_vol, g_adc_vol);
-                                    else if ((mic_snap >= C1_KEY_SHORT_TICKS) && (mic_snap < C1_KEY_MIC_DNR_LONG_TICKS))
+                                        GET_SHARED_GLOBAL(current_mute_switch, g_mute_switch);
-                                    {
+                                        current_mute_switch = (current_mute_switch == 0) ? 1 : 0;
-                                        if (mic_dbl_stage == 2)
+
+                                        if (current_mute_switch == 0)
                                         {
-                                            c1_mic_voice_fx = (c1_mic_voice_fx ? 0 : 1);
+                                            mic_volume(0, i2c);
-                                            i_c1_led_ctrl.set_mic_voice_fx(c1_mic_voice_fx);
+                                            old_adc_vol = 0;
-                                            // 改动原因：变声状态变化后立即保存到Flash，保证断电后恢复正确的变声灯状态。
-                                            save_value(C1_VOICE_FX_INFO_PATH, (unsigned char)c1_mic_voice_fx);
-                                            mic_dbl_stage = 0;
-                                            mic_defer_left = 0;
-                                            debug_printf("C1 mic voice/beautifier toggle: %d\n", c1_mic_voice_fx);
                                         }
                                         else
                                         {
-                                            mic_dbl_stage = 1;
+                                            mic_volume(effective_adc_vol, i2c);
-                                            mic_defer_left = C1_MIC_DOUBLE_DEFER_TICKS;
+                                            old_adc_vol = effective_adc_vol;
                                         }
+                                        SET_SHARED_GLOBAL(g_mute_switch, current_mute_switch);
+                                        save_value(C1_MIC_MUTE_INFO_PATH, (unsigned char)current_mute_switch);
+                                        i_c1_led_ctrl.set_mic_mute_state(current_mute_switch);
+                                        last_mute_switch_for_led = current_mute_switch;
+                                        debug_printf("C1 key mic mute toggle (short press): %d\n", current_mute_switch);
                                     }
                                     mic_dnr_long_fired = 0;
                                 }
@@ -1112,13 +1048,6 @@ void AudioHwRemote2(streaming chanend c, client interface i2c_master_if i2c, cli
                                 }
                             }
                         }
-                        else if (pressed_count > 1)
-                        {
-                            // 改动原因：多键同按时取消 mic 双击等待，避免组合键松手后误触发延迟静音。
-                            mic_dbl_stage = 0;
-                            mic_defer_left = 0;
-                        }
-
                         // 改动原因：多键同时按下不映射功能，立即清除本轮计时，避免组合键抖动误触发单键动作。
                         mode_press_ticks = 0;
                         vol_down_press_ticks = 0;
@@ -1254,6 +1183,26 @@ void AudioHwRemote2(streaming chanend c, client interface i2c_master_if i2c, cli
                         g_last_mute_switch = current_mute;
                     }
 
+                    // 改动原因：规格DNR无指示灯，按键长按切换后通过HID 0xB5主动上报APP（与0xB4监听开关上报方式一致）。
+                    {
+                        unsigned current_dnr;
+                        GET_SHARED_GLOBAL(current_dnr, g_dnr_enable);
+                        if (g_last_dnr_enable != current_dnr && g_last_dnr_enable != 0xFF)
+                        {
+                            unsafe
+                            {
+                                unsigned char * unsafe reportPtr = g_hid_pass_data;
+                                reportPtr[0] = 0x77;
+                                reportPtr[1] = 0xB5;  // GET_DNR_ENABLE
+                                reportPtr[2] = (unsigned char)current_dnr;
+                                for (int i = 3; i < 63; i++) reportPtr[i] = 0x00;
+                                hidSetChangePending(0x1);
+                            }
+                            debug_printf("DNR enable changed: %d -> %d, HID 0xB5 report prepared\n", g_last_dnr_enable, current_dnr);
+                        }
+                        g_last_dnr_enable = current_dnr;
+                    }
+
                     // 改动原因：检测监听开关(g_adc_loop)状态变化，如果变化则通过HID上报0xB4（格式参考eq_hid_protocol.md）
                     {
                         unsigned current_adc_loop;
@@ -1979,9 +1928,8 @@ static inline void c1_panel_leds_force_all_off_hw(void)
 }
 
 // 改动原因：c1_mode 与灯索引一致：1=灯 2=蓝 3=绿 4=橙(R+G) 5=紫(R+B)；仅驱动 mode 区（p_leds bit2/3 + p_mode_led_blue），不受 mic 变声影响。
-// 改动原因：mic 区灯优先级：静音=只亮红灯（覆盖变声/DNR）；非静音时变声=橙(p_mic_mute_led_red+R+bit0绿)，DNR=蓝(p_leds bit1)，
+// 改动原因：规格 mic 区灯仅反映静音——静音红灯常亮，非静音（含DNR开/关）全灭；DNR状态由APP显示。
-// 两者同开=橙+蓝混合，两者均关=全灯。
+static inline void apply_c1_panel_leds(unsigned mode_led_color_idx, unsigned mic_mute_switch, unsigned &led_shadow)
-static inline void apply_c1_panel_leds(unsigned mode_led_color_idx, unsigned mic_mute_switch, unsigned mic_voice_fx_on, unsigned mic_dnr_on, unsigned &led_shadow)
 {
     unsigned mode_red = 0;
     unsigned mode_green = 0;
@@ -1990,17 +1938,11 @@ static inline void apply_c1_panel_leds(unsigned mode_led_color_idx, unsigned mic
     unsigned mic_green = 0;
     unsigned mic_blue = 0;
 
-    // 改动原因：静音优先——静音(mic_mute_switch==0)时只亮红灯，屏蔽变声橙灯和DNR蓝灯；
+    // 改动原因：规格表——开启静音红灯常亮，关闭静音/正常工作无指示灯。
-    // 关闭静音后恢复为变声/DNR/混合/全灯的组合状态，满足“关闭静音时回到其他模式的灯颜色”需求。
     if (mic_mute_switch == 0) {
         mic_red   = 1;
         mic_green = 0;
         mic_blue  = 0;
-    } else {
-        // 改动原因：变声=橙(R+G)，DNR=蓝，两者同时开=橙+蓝混合，两者均关=全灯。
-        mic_red   = mic_voice_fx_on ? 1 : 0;
-        mic_green = mic_voice_fx_on ? 1 : 0;
-        mic_blue  = mic_dnr_on ? 1 : 0;
     }
 
     if (mode_led_color_idx == 1) {
@@ -2024,7 +1966,7 @@ static inline void apply_c1_panel_leds(unsigned mode_led_color_idx, unsigned mic
     }
 
     // 改动原因：硬件 mic/mode RGB 对调后，低四位 bit0~3 分别为 mic mute绿、mic mute蓝、mode红、mode绿，统一刷新。
-    // 改动原因：p_mic_mute_led_red 由 mic_red 驱动，静音/变声时亮红灯（输出0=亮）；DNR 蓝灯改由 p_leds bit1 驱动。
+    // 改动原因：p_mic_mute_led_red 由 mic_red 驱动（输出0=亮）；mic 区绿/蓝仅规格静音态使用，非静音恒灭。
     p_mic_mute_led_red <: (mic_red ? 0 : 1);
     led_shadow &= ~0xF;
     led_shadow |= (mic_green ? 0x0 : 0x1);
@@ -2041,10 +1983,6 @@ void app_control_slave(server interface c1_led_ctrl_if i_c1_led_ctrl)
     unsigned led_shadow = 0xF;
     unsigned mode_led_color_idx = 1;
     unsigned mic_mute_switch = 1;
-    // 改动原因：变声/美声开时 p_mic_mute_led_red + p_leds bit0 显橙，与 set_mode_led_color 下发的 mode 灯独立；此处状态与 tile0 set_mic_voice_fx 同步。
-    unsigned mic_voice_fx_on = 0;
-    // 改动原因：AI通话降噪DNR开时点亮 p_leds bit1 mic mute 蓝灯；与变声同时开时橙+蓝混合；静音优先在 apply 内部处理。
-    unsigned mic_dnr_on = 0;
     c1_panel_leds_force_all_off_hw();
 
     unsigned eq_mode_time = 0;
@@ -2067,20 +2005,11 @@ void app_control_slave(server interface c1_led_ctrl_if i_c1_led_ctrl)
                 mode_led_color_idx = color_idx;
                 if (mode_led_color_idx > 5 || mode_led_color_idx < 1)
                     mode_led_color_idx = C1_MODE_VALUE_DEFAULT;
-                apply_c1_panel_leds(mode_led_color_idx, mic_mute_switch, mic_voice_fx_on, mic_dnr_on, led_shadow);
+                apply_c1_panel_leds(mode_led_color_idx, mic_mute_switch, led_shadow);
             break;
             case i_c1_led_ctrl.set_mic_mute_state(unsigned mute_state):
                 mic_mute_switch = (mute_state != 0) ? 1 : 0;
-                apply_c1_panel_leds(mode_led_color_idx, mic_mute_switch, mic_voice_fx_on, mic_dnr_on, led_shadow);
+                apply_c1_panel_leds(mode_led_color_idx, mic_mute_switch, led_shadow);
-            break;
-            case i_c1_led_ctrl.set_mic_voice_fx(unsigned voice_fx_enabled):
-                mic_voice_fx_on = (voice_fx_enabled != 0) ? 1 : 0;
-                apply_c1_panel_leds(mode_led_color_idx, mic_mute_switch, mic_voice_fx_on, mic_dnr_on, led_shadow);
-            break;
-            case i_c1_led_ctrl.set_mic_dnr_state(unsigned dnr_enabled):
-                // 改动原因：接收 tile0 按键逻辑下发的 DNR 状态，刷新 mic 区蓝灯；静音优先在 apply 内部处理。
-                mic_dnr_on = (dnr_enabled != 0) ? 1 : 0;
-                apply_c1_panel_leds(mode_led_color_idx, mic_mute_switch, mic_voice_fx_on, mic_dnr_on, led_shadow);
             break;
             }
         }

sw_usb_audio/app_usb_aud_fosi_c1/src/extensions/eq.c

@@ -147,6 +147,7 @@ static struct {
     bool is_get_firmware_version_request;  // 改动原因：添加获取固件版本请求标志，用于GET_FIRMWARE_VERSION (0xA6)
     bool is_get_mute_switch_request;        // 改动原因：添加获取静音开关请求标志，用于GET_MUTE_SWITCH (0xB2)，值由MCU通过UART 0x5F返回
     bool is_get_listen_switch_request;      // 改动原因：添加获取监听开关请求标志，用于GET_LISTEN_SWITCH (0xB4)，直接读 g_adc_loop
+    bool is_get_dnr_enable_request;         // 改动原因：添加获取AI通话降噪请求标志，用于GET_DNR_ENABLE (0xB5)，直接读 g_dnr_enable
     int32_t post_gain_db;
 } read_request = {0};
 
@@ -1525,6 +1526,14 @@ unsigned char process_send_params(uint8_t data[], uint16_t len) {
         return true;
     }
 
+    // 处理获取AI通话降噪开关命令 (0xB5) - GET_DNR_ENABLE
+    // 改动原因：规格 mic 键长按切换 DNR 无指示灯，APP 通过 HID 0xB5 读取/接收主动上报 g_dnr_enable
+    if (data[1] == 0xB5) {
+        debug_printf("Received get DNR enable command (GET_DNR_ENABLE) via HID 0xB5\n");
+        read_request.is_get_dnr_enable_request = true;
+        return true;
+    }
+
     // 处理获取当前UAC模式命令 (0x9C) - GET_CURRENT_UAC_MODE
     // 改动原因：添加当前UAC模式查询命令，返回当前UAC模式值和名称
     if (data[1] == 0x9C) {
@@ -3146,6 +3155,21 @@ unsigned char process_read_params(uint8_t response[]) {
         return true;
     }
 
+    // 处理获取AI通话降噪开关请求 (0xB5) - GET_DNR_ENABLE
+    // 改动原因：直接读取 g_dnr_enable 返回；按键长按切换后 audiohw 主动上报同格式 0x77 0xB5 + 1字节
+    if (read_request.is_get_dnr_enable_request == true) {
+        unsigned dnr_en;
+        extern unsigned g_dnr_enable;
+        GET_SHARED_GLOBAL(dnr_en, g_dnr_enable);
+        response[0] = 0x77;
+        response[1] = 0xB5;
+        response[2] = (uint8_t)(dnr_en & 0xFF);  // 0=关 1=开
+        for (int i = 3; i < 63; i++) response[i] = 0x00;
+        read_request.is_get_dnr_enable_request = false;
+        debug_printf("Building 0xB5 response (GET_DNR_ENABLE), g_dnr_enable=%u\n", dnr_en);
+        return true;
+    }
+
     if (read_request.is_read_request == true) {
 #if 1  // 改动原因：fosi_c1 使用 -DUAC1=1 编译，原 #if !UAC1 导致 0x8E 读EQ参数在 HID GET_REPORT 时永不组包，eq_designer 收到全零响应
         debug_printf("Read request information:\n");

sw_usb_audio/app_usb_aud_fosi_c1/src/extensions/user_main.h

@@ -10,13 +10,8 @@
 interface c1_led_ctrl_if {
     // 改动原因：与 c1_mode 同值下发 tile1：1=灭 2=蓝 3=绿 4=橙 5=紫（灯索引即 mode）。
     void set_mode_led_color(unsigned color_idx);
-    void set_mic_mute_state(unsigned mute_switch); // mute_switch: 0=静音(亮红), 1=非静音(灭红)
+    // 改动原因：规格 mic 指示灯仅反映静音——0=静音红灯常亮，1=非静音全灭；DNR 无灯由 APP 显示。
-    // 改动原因：硬件 mic/mode RGB 对调后，变声/美声开时 tile1 点亮 mic 区：p_mic_mute_led_red 红 + p_leds bit0 绿（橙）；关时仅按静音规则驱动 mic 区熄灭。
+    void set_mic_mute_state(unsigned mute_switch);
-    // 改动原因：参数名不能用 xC 保留字 on（on tile[:]: 语法），否则编译器在解析 interface 时报 parse error before "on"。
-    void set_mic_voice_fx(unsigned voice_fx_enabled);
-    // 改动原因：麦克风键长按1.5s切换AI通话降噪(DNR)，开时点亮 p_leds bit1 mic mute 蓝灯；
-    // 与变声同时开时橙+蓝混合；静音优先（静音时所有mic灯被红灯取代）。断电需保存。
-    void set_mic_dnr_state(unsigned dnr_enabled);
 };
 void switch_handler(void);
 void flag_handler();

sw_usb_audio/app_usb_aud_fosi_c1_lp/CMakeLists.txt

@@ -139,11 +139,11 @@ set(APP_COMPILER_FLAGS_bypass_uac1    ${SW_USB_AUDIO_FLAGS}       -DXUA_SPDIF_RX
                                                                   -DXMOS_FPS_EN=0
                                                                   -DUAC1=1
                                                                   -DHID_CONTROLS=1
-                                                                  -DDNR_50MS=1
+                                                                  #-DDNR_50MS=1
                                                                   -DLOW_POWER_EN=1
                                                                   -DCHAN_BUFF_CTRL=1
                                                                   -DXUD_PRIORITY_HIGH=1
-                                                                  -ldnr_50ms
+                                                                  #-ldnr_50ms
                                                                   -DDEBUG_MEMORY_LOG_ENABLED=1
                                                                   -DNO_LOG_TIMESTAPS=0
                                                                   -DI2S_CHANS_ADC=2)

sw_usb_audio/app_usb_aud_fosi_c1_lp/src/extensions/audiohw.xc

@@ -118,8 +118,6 @@ timer tm;
 #define C1_KEY_LONG_TICKS     50
 // 改动原因：规格要求 mic 键长按 1.5s 切换 g_dnr_enable（AI 通话降噪/DNR）；20ms*75=1.5s，与 mode 键 LONG 解耦，避免误触。
 #define C1_KEY_MIC_DNR_LONG_TICKS 75
-// 改动原因：双击第二下需在首击释放后约 500ms 内按下，否则判为单击静音；20ms*25=500ms。
-#define C1_MIC_DOUBLE_DEFER_TICKS 25
 // 改动原因：新增C1模式持久化文件路径，使用LittleFS保存mode按键状态，保证断电重启后可恢复。
 #define C1_MODE_VALUE_PATH    "c1_mode_value"
 
@@ -130,9 +128,8 @@ timer tm;
 
 // 改动原因：DAC 音量单独持久化路径，与 mode 的 c1_mode 文件分离，避免互相覆盖且便于维护。
 #define C1_DAC_VOL_INFO_PATH  "c1_dac_vol"
-// 改动原因：麦克风按键三种状态（静音/变声/DNR）均需断电保存，上电恢复并同步LED显示。
+// 改动原因：规格表仅保留静音与 DNR 断电记忆；mic 指示灯只反映静音（红灯/灭），DNR 由 APP 显示。
 #define C1_MIC_MUTE_INFO_PATH  "c1_mic_mute"
-#define C1_VOICE_FX_INFO_PATH  "c1_voice_fx"
 #define C1_DNR_EN_INFO_PATH    "c1_dnr_en"
 // 改动原因：与 FORMAT_DELAY(30000000) 相同时间基准（get_reference_time 滴答），用户停止调节 300ms 后再写 Flash，减少磨损并满足需求。
 #define C1_DAC_VOL_SAVE_DELAY (30000000)
@@ -292,6 +289,7 @@ unsigned g_led_blink_is_white = 0;
 extern unsigned char g_hid_pass_data[64];
 static unsigned g_last_dac_vol = 0xFF;  // 改动原因：改为检测g_dac_vol的变化，初始化为0xFF表示未初始化
 static unsigned g_last_mute_switch = 0xFF;  // 改动原因：检测静音开关变化并上报0xB2，0xFF=未初始化
+static unsigned g_last_dnr_enable = 0xFF;   // 改动原因：检测AI通话降噪(g_dnr_enable)变化并上报0xB5，0xFF=未初始化
 static unsigned g_last_adc_loop = 0xFF;     // 改动原因：检测监听开关(g_adc_loop)变化并上报0xB4，0xFF=未初始化
 static unsigned g_last_audio_type = 0xFF;     // 改动原因：上次检测到的音频类型，初始化为0xFF表示未初始化，用于LED颜色判断
 static unsigned g_last_led_status = 0xFF;   // 上次检测到的LED状态，初始化为0xFF表示未初始化
@@ -567,12 +565,8 @@ void AudioHwRemote2(streaming chanend c, client interface i2c_master_if i2c, cli
     unsigned vol_down_press_ticks = 0;
     unsigned mic_mute_press_ticks = 0;
     unsigned vol_up_press_ticks = 0;
-    // 改动原因：mic 键双击需延迟首轮短按的静音动作，用 stage1=等超时单击 / stage2=已收到第二下按下等释放；与长按 DNR 互斥靠 mic_dnr_long_fired。
+    // 改动原因：规格取消双击变声；mic_dnr_long_fired 用于长按 DNR 后屏蔽同次松手的短按静音。
-    unsigned mic_dbl_stage = 0;
-    unsigned mic_defer_left = 0;
     unsigned mic_dnr_long_fired = 0;
-    // 改动原因：变声/美声仅按键+灯，tile0 保存状态供 set_mic_voice_fx 下发 mic 橙灯。
-    unsigned c1_mic_voice_fx = 0;
     // 改动原因：mic mute红灯通过interface下发到tile1，仅在状态变化时发送，减少无意义跨tile调用。
     unsigned last_mute_switch_for_led = 0xFFFFFFFF;
     unsigned host_os = 0;
@@ -652,32 +646,24 @@ void AudioHwRemote2(streaming chanend c, client interface i2c_master_if i2c, cli
     }
 
 
-    // 改动原因：三种 mic 状态（静音/变声/DNR）均需断电保存，上电从 Flash 读取并恢复；无效値（非 0/1）时使用默认値。
+    // 改动原因：规格仅保留静音与 DNR 断电记忆；上电恢复后 mic 灯只同步静音态（红灯/灭）。
     {
         unsigned char loaded_mute = load_value(C1_MIC_MUTE_INFO_PATH);
         unsigned init_mute = (loaded_mute == 0 || loaded_mute == 1) ? (unsigned)loaded_mute : 1u;
         SET_SHARED_GLOBAL(g_mute_switch, init_mute);
     }
-    {
-        unsigned char loaded_vfx = load_value(C1_VOICE_FX_INFO_PATH);
-        c1_mic_voice_fx = (loaded_vfx == 1) ? 1u : 0u;
-    }
     {
         unsigned char loaded_dnr = load_value(C1_DNR_EN_INFO_PATH);
         unsigned init_dnr = (loaded_dnr == 0 || loaded_dnr == 1) ? (unsigned)loaded_dnr : 1u;
         SET_SHARED_GLOBAL(g_dnr_enable, init_dnr);
     }
 
-    // 改动原因：tile1 上电已硬件全灯；先下发三种mic状态再下发 mode，使首帧 apply 时 mic 已正确。
+    // 改动原因：tile1 上电已硬件全灯；先下发 mic 静音灯再下发 mode，使首帧 apply 时 mic 区正确。
     {
         unsigned init_mute_for_led;
-        unsigned init_dnr_for_led;
         GET_SHARED_GLOBAL(init_mute_for_led, g_mute_switch);
-        GET_SHARED_GLOBAL(init_dnr_for_led, g_dnr_enable);
         i_c1_led_ctrl.set_mic_mute_state(init_mute_for_led);
         i_c1_led_ctrl.set_mode_led_color(c1_mode_to_tile_mode_led_code(c1_mode));
-        i_c1_led_ctrl.set_mic_voice_fx(c1_mic_voice_fx);
-        i_c1_led_ctrl.set_mic_dnr_state(init_dnr_for_led);
         last_mute_switch_for_led = init_mute_for_led;
     }
 
@@ -924,51 +910,8 @@ void AudioHwRemote2(streaming chanend c, client interface i2c_master_if i2c, cli
                     vol_up_pressed = ((button_state & C1_KEY_VOL_UP_MASK) == 0);
                     pressed_count = mode_pressed + vol_down_pressed + mic_mute_pressed + vol_up_pressed;
 
-                    // 改动原因：mic 首击短按后延迟 500ms 再静音，以便识别双击；仅 mic 松开时递减 mic_defer_left，到 0 执行单击静音。
-                    if (mic_dbl_stage == 1 && mic_defer_left > 0)
-                    {
-                        unsigned mic_released_now = ((button_state & C1_KEY_MIC_MUTE_MASK) != 0);
-                        if (mic_released_now)
-                        {
-                            mic_defer_left--;
-                            if (mic_defer_left == 0)
-                            {
-                                unsigned current_mute_switch;
-                                unsigned effective_adc_vol;
-                                GET_SHARED_GLOBAL(effective_adc_vol, g_adc_vol);
-                                GET_SHARED_GLOBAL(current_mute_switch, g_mute_switch);
-                                current_mute_switch = (current_mute_switch == 0) ? 1 : 0;
-
-                                if (current_mute_switch == 0)
-                                {
-                                    mic_volume(0, i2c);
-                                    // 改动原因：同步 old_adc_vol，避免定时器下一轮仍按旧值误判或与按键写入冲突。
-                                    old_adc_vol = 0;
-                                }
-                                else
-                                {
-                                    mic_volume(effective_adc_vol, i2c);
-                                    old_adc_vol = effective_adc_vol;
-                                }
-                                SET_SHARED_GLOBAL(g_mute_switch, current_mute_switch);
-                                // 改动原因：静音状态变化后立即保存到Flash，保证断电后恢复正确的静音灯状态。
-                                save_value(C1_MIC_MUTE_INFO_PATH, (unsigned char)current_mute_switch);
-                                i_c1_led_ctrl.set_mic_mute_state(current_mute_switch);
-                                last_mute_switch_for_led = current_mute_switch;
-                                debug_printf("C1 key mic mute toggle (deferred single): %d\n", current_mute_switch);
-                                mic_dbl_stage = 0;
-                            }
-                        }
-                    }
-
                     if (pressed_count == 1)
                     {
-                        // 改动原因：mic 双击等待期间若用户去按 mode/音量键，应取消延迟单击静音，避免误切 g_mute_switch。
-                        if (!mic_mute_pressed)
-                        {
-                            mic_dbl_stage = 0;
-                            mic_defer_left = 0;
-                        }
                         if (mode_pressed)
                         {
                             mode_press_ticks++;
@@ -987,22 +930,14 @@ void AudioHwRemote2(streaming chanend c, client interface i2c_master_if i2c, cli
                         }
                         else if (mic_mute_pressed)
                         {
-                            // 改动原因：双击窗口内第二下按下，取消延迟单击静音，改为等待释放后判双击变声。
-                            if (mic_dbl_stage == 1)
-                            {
-                                mic_defer_left = 0;
-                                mic_dbl_stage = 2;
-                            }
                             mic_mute_press_ticks++;
-                            // 改动原因：按住满 1.5s 翻转 g_dnr_enable，extra_i2s 中 GET_SHARED_GLOBAL 决定是否走 DNR；松手时靠 mic_dnr_long_fired 屏蔽短按/双击。
+                            // 改动原因：规格长按1.5s切换AI通话降噪，无指示灯；保存Flash；g_dnr_enable变化由定时器路径HID 0xB5上报APP。
                             if (mic_mute_press_ticks == C1_KEY_MIC_DNR_LONG_TICKS)
                             {
                                 unsigned dnr_enable;
                                 GET_SHARED_GLOBAL(dnr_enable, g_dnr_enable);
                                 dnr_enable = (dnr_enable != 0) ? 0 : 1;
                                 SET_SHARED_GLOBAL(g_dnr_enable, dnr_enable);
-                                // 改动原因：DNR状态变化后立即下发LED（开亮蓝灯/关灯），并保存到Flash供断电恢复。
-                                i_c1_led_ctrl.set_mic_dnr_state(dnr_enable);
                                 save_value(C1_DNR_EN_INFO_PATH, (unsigned char)dnr_enable);
                                 mic_dnr_long_fired = 1;
                                 debug_printf("C1 mic DNR toggle (hold 1.5s): %d\n", dnr_enable);
@@ -1059,33 +994,34 @@ void AudioHwRemote2(streaming chanend c, client interface i2c_master_if i2c, cli
                                 }
                             }
 
-                            // 改动原因：mic：短按静音延迟单击（防双击）；双击变声 mic 橙灯；长按1.5s 切 g_dnr_enable 无灯；长按与短/双互斥。
+                            // 改动原因：规格短按立即切换静音（红灯/灭灯）；长按1.5s已切DNR则屏蔽同次松手短按。
                             {
                                 unsigned mic_snap = mic_mute_press_ticks;
                                 if (mic_snap > 0)
                                 {
-                                    if ((mic_snap >= C1_KEY_MIC_DNR_LONG_TICKS) || mic_dnr_long_fired)
+                                    if ((mic_snap >= C1_KEY_SHORT_TICKS) && (mic_snap < C1_KEY_MIC_DNR_LONG_TICKS) && !mic_dnr_long_fired)
                                     {
-                                        if (mic_dbl_stage == 2)
+                                        unsigned current_mute_switch;
-                                            mic_dbl_stage = 0;
+                                        unsigned effective_adc_vol;
-                                    }
+                                        GET_SHARED_GLOBAL(effective_adc_vol, g_adc_vol);
-                                    else if ((mic_snap >= C1_KEY_SHORT_TICKS) && (mic_snap < C1_KEY_MIC_DNR_LONG_TICKS))
+                                        GET_SHARED_GLOBAL(current_mute_switch, g_mute_switch);
-                                    {
+                                        current_mute_switch = (current_mute_switch == 0) ? 1 : 0;
-                                        if (mic_dbl_stage == 2)
+
+                                        if (current_mute_switch == 0)
                                         {
-                                            c1_mic_voice_fx = (c1_mic_voice_fx ? 0 : 1);
+                                            mic_volume(0, i2c);
-                                            i_c1_led_ctrl.set_mic_voice_fx(c1_mic_voice_fx);
+                                            old_adc_vol = 0;
-                                            // 改动原因：变声状态变化后立即保存到Flash，保证断电后恢复正确的变声灯状态。
-                                            save_value(C1_VOICE_FX_INFO_PATH, (unsigned char)c1_mic_voice_fx);
-                                            mic_dbl_stage = 0;
-                                            mic_defer_left = 0;
-                                            debug_printf("C1 mic voice/beautifier toggle: %d\n", c1_mic_voice_fx);
                                         }
                                         else
                                         {
-                                            mic_dbl_stage = 1;
+                                            mic_volume(effective_adc_vol, i2c);
-                                            mic_defer_left = C1_MIC_DOUBLE_DEFER_TICKS;
+                                            old_adc_vol = effective_adc_vol;
                                         }
+                                        SET_SHARED_GLOBAL(g_mute_switch, current_mute_switch);
+                                        save_value(C1_MIC_MUTE_INFO_PATH, (unsigned char)current_mute_switch);
+                                        i_c1_led_ctrl.set_mic_mute_state(current_mute_switch);
+                                        last_mute_switch_for_led = current_mute_switch;
+                                        debug_printf("C1 key mic mute toggle (short press): %d\n", current_mute_switch);
                                     }
                                     mic_dnr_long_fired = 0;
                                 }
@@ -1115,13 +1051,6 @@ void AudioHwRemote2(streaming chanend c, client interface i2c_master_if i2c, cli
                                 }
                             }
                         }
-                        else if (pressed_count > 1)
-                        {
-                            // 改动原因：多键同按时取消 mic 双击等待，避免组合键松手后误触发延迟静音。
-                            mic_dbl_stage = 0;
-                            mic_defer_left = 0;
-                        }
-
                         // 改动原因：多键同时按下不映射功能，立即清除本轮计时，避免组合键抖动误触发单键动作。
                         mode_press_ticks = 0;
                         vol_down_press_ticks = 0;
@@ -1257,6 +1186,26 @@ void AudioHwRemote2(streaming chanend c, client interface i2c_master_if i2c, cli
                         g_last_mute_switch = current_mute;
                     }
 
+                    // 改动原因：规格DNR无指示灯，按键长按切换后通过HID 0xB5主动上报APP（与0xB4监听开关上报方式一致）。
+                    {
+                        unsigned current_dnr;
+                        GET_SHARED_GLOBAL(current_dnr, g_dnr_enable);
+                        if (g_last_dnr_enable != current_dnr && g_last_dnr_enable != 0xFF)
+                        {
+                            unsafe
+                            {
+                                unsigned char * unsafe reportPtr = g_hid_pass_data;
+                                reportPtr[0] = 0x77;
+                                reportPtr[1] = 0xB5;  // GET_DNR_ENABLE
+                                reportPtr[2] = (unsigned char)current_dnr;
+                                for (int i = 3; i < 63; i++) reportPtr[i] = 0x00;
+                                hidSetChangePending(0x1);
+                            }
+                            debug_printf("DNR enable changed: %d -> %d, HID 0xB5 report prepared\n", g_last_dnr_enable, current_dnr);
+                        }
+                        g_last_dnr_enable = current_dnr;
+                    }
+
                     // 改动原因：检测监听开关(g_adc_loop)状态变化，如果变化则通过HID上报0xB4（格式参考eq_hid_protocol.md）
                     {
                         unsigned current_adc_loop;
@@ -1982,9 +1931,8 @@ static inline void c1_panel_leds_force_all_off_hw(void)
 }
 
 // 改动原因：c1_mode 与灯索引一致：1=灯 2=蓝 3=绿 4=橙(R+G) 5=紫(R+B)；仅驱动 mode 区（p_leds bit2/3 + p_mode_led_blue），不受 mic 变声影响。
-// 改动原因：mic 区灯优先级：静音=只亮红灯（覆盖变声/DNR）；非静音时变声=橙(p_mic_mute_led_red+R+bit0绿)，DNR=蓝(p_leds bit1)，
+// 改动原因：规格 mic 区灯仅反映静音——静音红灯常亮，非静音（含DNR开/关）全灭；DNR状态由APP显示。
-// 两者同开=橙+蓝混合，两者均关=全灯。
+static inline void apply_c1_panel_leds(unsigned mode_led_color_idx, unsigned mic_mute_switch, unsigned &led_shadow)
-static inline void apply_c1_panel_leds(unsigned mode_led_color_idx, unsigned mic_mute_switch, unsigned mic_voice_fx_on, unsigned mic_dnr_on, unsigned &led_shadow)
 {
     unsigned mode_red = 0;
     unsigned mode_green = 0;
@@ -1993,17 +1941,11 @@ static inline void apply_c1_panel_leds(unsigned mode_led_color_idx, unsigned mic
     unsigned mic_green = 0;
     unsigned mic_blue = 0;
 
-    // 改动原因：静音优先——静音(mic_mute_switch==0)时只亮红灯，屏蔽变声橙灯和DNR蓝灯；
+    // 改动原因：规格表——开启静音红灯常亮，关闭静音/正常工作无指示灯。
-    // 关闭静音后恢复为变声/DNR/混合/全灯的组合状态，满足“关闭静音时回到其他模式的灯颜色”需求。
     if (mic_mute_switch == 0) {
         mic_red   = 1;
         mic_green = 0;
         mic_blue  = 0;
-    } else {
-        // 改动原因：变声=橙(R+G)，DNR=蓝，两者同时开=橙+蓝混合，两者均关=全灯。
-        mic_red   = mic_voice_fx_on ? 1 : 0;
-        mic_green = mic_voice_fx_on ? 1 : 0;
-        mic_blue  = mic_dnr_on ? 1 : 0;
     }
 
     if (mode_led_color_idx == 1) {
@@ -2027,7 +1969,7 @@ static inline void apply_c1_panel_leds(unsigned mode_led_color_idx, unsigned mic
     }
 
     // 改动原因：硬件 mic/mode RGB 对调后，低四位 bit0~3 分别为 mic mute绿、mic mute蓝、mode红、mode绿，统一刷新。
-    // 改动原因：p_mic_mute_led_red 由 mic_red 驱动，静音/变声时亮红灯（输出0=亮）；DNR 蓝灯改由 p_leds bit1 驱动。
+    // 改动原因：p_mic_mute_led_red 由 mic_red 驱动（输出0=亮）；mic 区绿/蓝仅规格静音态使用，非静音恒灭。
     p_mic_mute_led_red <: (mic_red ? 0 : 1);
     led_shadow &= ~0xF;
     led_shadow |= (mic_green ? 0x0 : 0x1);
@@ -2044,10 +1986,6 @@ void app_control_slave(server interface c1_led_ctrl_if i_c1_led_ctrl, chanend c_
     unsigned led_shadow = 0xF;
     unsigned mode_led_color_idx = 1;
     unsigned mic_mute_switch = 1;
-    // 改动原因：变声/美声开时 p_mic_mute_led_red + p_leds bit0 显橙，与 set_mode_led_color 下发的 mode 灯独立；此处状态与 tile0 set_mic_voice_fx 同步。
-    unsigned mic_voice_fx_on = 0;
-    // 改动原因：AI通话降噪DNR开时点亮 p_leds bit1 mic mute 蓝灯；与变声同时开时橙+蓝混合；静音优先在 apply 内部处理。
-    unsigned mic_dnr_on = 0;
     c1_panel_leds_force_all_off_hw();
 
     unsigned eq_mode_time = 0;
@@ -2070,20 +2008,11 @@ void app_control_slave(server interface c1_led_ctrl_if i_c1_led_ctrl, chanend c_
                 mode_led_color_idx = color_idx;
                 if (mode_led_color_idx > 5 || mode_led_color_idx < 1)
                     mode_led_color_idx = C1_MODE_VALUE_DEFAULT;
-                apply_c1_panel_leds(mode_led_color_idx, mic_mute_switch, mic_voice_fx_on, mic_dnr_on, led_shadow);
+                apply_c1_panel_leds(mode_led_color_idx, mic_mute_switch, led_shadow);
             break;
             case i_c1_led_ctrl.set_mic_mute_state(unsigned mute_state):
                 mic_mute_switch = (mute_state != 0) ? 1 : 0;
-                apply_c1_panel_leds(mode_led_color_idx, mic_mute_switch, mic_voice_fx_on, mic_dnr_on, led_shadow);
+                apply_c1_panel_leds(mode_led_color_idx, mic_mute_switch, led_shadow);
-            break;
-            case i_c1_led_ctrl.set_mic_voice_fx(unsigned voice_fx_enabled):
-                mic_voice_fx_on = (voice_fx_enabled != 0) ? 1 : 0;
-                apply_c1_panel_leds(mode_led_color_idx, mic_mute_switch, mic_voice_fx_on, mic_dnr_on, led_shadow);
-            break;
-            case i_c1_led_ctrl.set_mic_dnr_state(unsigned dnr_enabled):
-                // 改动原因：接收 tile0 按键逻辑下发的 DNR 状态，刷新 mic 区蓝灯；静音优先在 apply 内部处理。
-                mic_dnr_on = (dnr_enabled != 0) ? 1 : 0;
-                apply_c1_panel_leds(mode_led_color_idx, mic_mute_switch, mic_voice_fx_on, mic_dnr_on, led_shadow);
             break;
             }
         }

sw_usb_audio/app_usb_aud_fosi_c1_lp/src/extensions/eq.c

@@ -147,6 +147,7 @@ static struct {
     bool is_get_firmware_version_request;  // 改动原因：添加获取固件版本请求标志，用于GET_FIRMWARE_VERSION (0xA6)
     bool is_get_mute_switch_request;        // 改动原因：添加获取静音开关请求标志，用于GET_MUTE_SWITCH (0xB2)，值由MCU通过UART 0x5F返回
     bool is_get_listen_switch_request;      // 改动原因：添加获取监听开关请求标志，用于GET_LISTEN_SWITCH (0xB4)，直接读 g_adc_loop
+    bool is_get_dnr_enable_request;         // 改动原因：添加获取AI通话降噪请求标志，用于GET_DNR_ENABLE (0xB5)，直接读 g_dnr_enable
     int32_t post_gain_db;
 } read_request = {0};
 
@@ -1525,6 +1526,14 @@ unsigned char process_send_params(uint8_t data[], uint16_t len) {
         return true;
     }
 
+    // 处理获取AI通话降噪开关命令 (0xB5) - GET_DNR_ENABLE
+    // 改动原因：规格 mic 键长按切换 DNR 无指示灯，APP 通过 HID 0xB5 读取/接收主动上报 g_dnr_enable
+    if (data[1] == 0xB5) {
+        debug_printf("Received get DNR enable command (GET_DNR_ENABLE) via HID 0xB5\n");
+        read_request.is_get_dnr_enable_request = true;
+        return true;
+    }
+
     // 处理获取当前UAC模式命令 (0x9C) - GET_CURRENT_UAC_MODE
     // 改动原因：添加当前UAC模式查询命令，返回当前UAC模式值和名称
     if (data[1] == 0x9C) {
@@ -3146,6 +3155,21 @@ unsigned char process_read_params(uint8_t response[]) {
         return true;
     }
 
+    // 处理获取AI通话降噪开关请求 (0xB5) - GET_DNR_ENABLE
+    // 改动原因：直接读取 g_dnr_enable 返回；按键长按切换后 audiohw 主动上报同格式 0x77 0xB5 + 1字节
+    if (read_request.is_get_dnr_enable_request == true) {
+        unsigned dnr_en;
+        extern unsigned g_dnr_enable;
+        GET_SHARED_GLOBAL(dnr_en, g_dnr_enable);
+        response[0] = 0x77;
+        response[1] = 0xB5;
+        response[2] = (uint8_t)(dnr_en & 0xFF);  // 0=关 1=开
+        for (int i = 3; i < 63; i++) response[i] = 0x00;
+        read_request.is_get_dnr_enable_request = false;
+        debug_printf("Building 0xB5 response (GET_DNR_ENABLE), g_dnr_enable=%u\n", dnr_en);
+        return true;
+    }
+
     if (read_request.is_read_request == true) {
 #if 1  // 改动原因：fosi_c1 使用 -DUAC1=1 编译，原 #if !UAC1 导致 0x8E 读EQ参数在 HID GET_REPORT 时永不组包，eq_designer 收到全零响应
         debug_printf("Read request information:\n");

sw_usb_audio/app_usb_aud_fosi_c1_lp/src/extensions/user_main.h

@@ -9,13 +9,8 @@
 interface c1_led_ctrl_if {
     // 改动原因：与 c1_mode 同值下发 tile1：1=灭 2=蓝 3=绿 4=橙 5=紫（灯索引即 mode）。
     void set_mode_led_color(unsigned color_idx);
-    void set_mic_mute_state(unsigned mute_switch); // mute_switch: 0=静音(亮红), 1=非静音(灭红)
+    // 改动原因：规格 mic 指示灯仅反映静音——0=静音红灯常亮，1=非静音全灭；DNR 无灯由 APP 显示。
-    // 改动原因：硬件 mic/mode RGB 对调后，变声/美声开时 tile1 点亮 mic 区：p_mic_mute_led_red 红 + p_leds bit0 绿（橙）；关时仅按静音规则驱动 mic 区熄灭。
+    void set_mic_mute_state(unsigned mute_switch);
-    // 改动原因：参数名不能用 xC 保留字 on（on tile[:]: 语法），否则编译器在解析 interface 时报 parse error before "on"。
-    void set_mic_voice_fx(unsigned voice_fx_enabled);
-    // 改动原因：麦克风键长按1.5s切换AI通话降噪(DNR)，开时点亮 p_leds bit1 mic mute 蓝灯；
-    // 与变声同时开时橙+蓝混合；静音优先（静音时所有mic灯被红灯取代）。断电需保存。
-    void set_mic_dnr_state(unsigned dnr_enabled);
 };
 void switch_handler(void);
 void flag_handler();