disable uac1 dfu

lib_xua/lib_xua/src/dfu/flash_interface.c

@@ -23,7 +23,7 @@
  */
 #ifndef FLASH_MAX_UPGRADE_SIZE
 //#define FLASH_MAX_UPGRADE_SIZE (512 * 1024)
-#define FLASH_MAX_UPGRADE_SIZE (2200 * 1024)
+#define FLASH_MAX_UPGRADE_SIZE (3000 * 1024)
 #endif
 
 #define FLASH_ERROR() do {} while(0)

lib_xua/lib_xua/src/hid/hid.xc

@@ -50,6 +50,7 @@ XUD_Result_t HidInterfaceClassRequests(
 #endif
 #if DEBUG_MEMORY_LOG_ENABLED
             unsigned log_switch; 
+            buffer[0] = 0x1;
 
             GET_SHARED_GLOBAL(log_switch, g_log_switch);
             if (log_switch) {

sw_usb_audio/app_usb_aud_phaten_golden_6ch/CMakeLists.txt

@@ -37,8 +37,8 @@ endif()
 
 # Firmware version (maps to BCD_DEVICE_J.M.N in USB descriptor)
 set(FW_VER_J 1)
-set(FW_VER_M 1)
-set(FW_VER_N 15)
+set(FW_VER_M 2)
+set(FW_VER_N 2)
 set(FW_VERSION "v${FW_VER_J}.${FW_VER_M}.${FW_VER_N}")
 
 set(SW_USB_AUDIO_FLAGS ${EXTRA_BUILD_FLAGS} -Os
@@ -129,7 +129,7 @@ set(APP_COMPILER_FLAGS_fact ${SW_USB_FACT_FLAGS}       -DI2S_CHANS_DAC=2
                                                         -DMIN_VOLUME=0xE000
                                                         -DINPUT_VOLUME_CONTROL=0
                                                         -DOUTPUT_VOLUME_CONTROL=0
-                                                        -DDEBUG_MEMORY_LOG_ENABLED=1
+                                                        #-DDEBUG_MEMORY_LOG_ENABLED=1
                                                         -DHID_DFU_EN=1
                                                         -DXUA_DFU_EN=1
                                                         #-DIR_SWITCHING_MODE
@@ -139,7 +139,7 @@ set(APP_COMPILER_FLAGS_fact ${SW_USB_FACT_FLAGS}       -DI2S_CHANS_DAC=2
 
 set(APP_COMPILER_FLAGS_f1_music_uac2 ${SW_USB_AUDIO_FLAGS}       -DI2S_CHANS_DAC=2
                                                         -DI2S_CHANS_ADC=2
-                                                        -DMIN_FREQ=44100
+                                                        -DMIN_FREQ=192000
                                                         -DMAX_FREQ=192000
                                                         -DF1_MUSIC_UAC2=1
                                                         -DSTREAM_FORMAT_OUTPUT_1_RESOLUTION_BITS=24
@@ -151,7 +151,8 @@ set(APP_COMPILER_FLAGS_f1_music_uac2 ${SW_USB_AUDIO_FLAGS}       -DI2S_CHANS_DAC
                                                         #-DUSE_EX3D
                                                         -DMIXER=0
                                                         -DUAC2_MODE=1
-                                                        #-ldnr_50ms
+                                                        -ldnr_50ms
+                                                        -DDNR_ENABLE=1
                                                         #-llib_ex3d_all
                                                         -DEQ_EN=1
                                                         #-DEX3D_SF_NUM=3
@@ -168,35 +169,35 @@ set(APP_COMPILER_FLAGS_f1_music_uac2 ${SW_USB_AUDIO_FLAGS}       -DI2S_CHANS_DAC
                                                         -DHID_CONTROLS=1)
 
 
-set(APP_COMPILER_FLAGS_f3_f4_fps_uac2 ${SW_USB_AUDIO_FLAGS}    -DI2S_CHANS_DAC=2
-                                                        -DI2S_CHANS_ADC=2
-                                                        -DMIN_FREQ=48000
-                                                        -DMAX_FREQ=48000
-                                                        -DUSE_EX3D=1
-                                                        -DF3_F4_FPS_UAC2=1
-                                                        -DMIXER=0
-                                                        -DUAC2_MODE=1
-                                                        -ldnr_50ms
-                                                        -llib_ex3d_all
-                                                        -DEQ_EN=1
-                                                        -DDNR_ENABLE=1
-                                                        -DSTREAM_FORMAT_OUTPUT_1_RESOLUTION_BITS=16
-                                                        -DSTREAM_FORMAT_INPUT_1_RESOLUTION_BITS=16
-                                                        -DINPUT_FORMAT_COUNT=1
-                                                        -DOUTPUT_FORMAT_COUNT=1
-                                                        -DEX3D_SF_NUM=3
-                                                        -DNUM_USB_CHAN_OUT=8
-                                                        -DNUM_USB_CHAN_IN=2
-                                                        -DNUM_EX3D_CHAN_OUT=2
-                                                        -DMIN_VOLUME=0xE000
-                                                        -DINPUT_VOLUME_CONTROL=1
-                                                        -DOUTPUT_VOLUME_CONTROL=1
-                                                        #-DDEBUG_MEMORY_LOG_ENABLED=1
-                                                        -DXUA_DFU_EN=1
-                                                        -DHID_DFU_EN=1
-                                                        -DIR_SWITCHING_MODE
-                                                        -DHID_CONTROLS=1)
-
+#set(APP_COMPILER_FLAGS_f3_f4_fps_uac2 ${SW_USB_AUDIO_FLAGS}    -DI2S_CHANS_DAC=2
+#                                                        -DI2S_CHANS_ADC=2
+#                                                        -DMIN_FREQ=48000
+#                                                        -DMAX_FREQ=48000
+#                                                        -DUSE_EX3D=1
+#                                                        -DF3_F4_FPS_UAC2=1
+#                                                        -DMIXER=0
+#                                                        -DUAC2_MODE=1
+#                                                        -ldnr_50ms
+#                                                        -llib_ex3d_all
+#                                                        -DEQ_EN=1
+#                                                        -DDNR_ENABLE=1
+#                                                        -DSTREAM_FORMAT_OUTPUT_1_RESOLUTION_BITS=16
+#                                                        -DSTREAM_FORMAT_INPUT_1_RESOLUTION_BITS=16
+#                                                        -DINPUT_FORMAT_COUNT=1
+#                                                        -DOUTPUT_FORMAT_COUNT=1
+#                                                        -DEX3D_SF_NUM=3
+#                                                        -DNUM_USB_CHAN_OUT=8
+#                                                        -DNUM_USB_CHAN_IN=2
+#                                                        -DNUM_EX3D_CHAN_OUT=2
+#                                                        -DMIN_VOLUME=0xE000
+#                                                        -DINPUT_VOLUME_CONTROL=1
+#                                                        -DOUTPUT_VOLUME_CONTROL=1
+#                                                        #-DDEBUG_MEMORY_LOG_ENABLED=1
+#                                                        -DXUA_DFU_EN=1
+#                                                        -DHID_DFU_EN=1
+#                                                        -DIR_SWITCHING_MODE
+#                                                        -DHID_CONTROLS=1)
+#
 set(APP_COMPILER_FLAGS_f6_f7_fps_uac1 ${SW_USB_AUDIO_FLAGS}  -DI2S_CHANS_DAC=2
                                                         -DI2S_CHANS_ADC=2
                                                         -DAUDIO_CLASS=1
@@ -221,8 +222,8 @@ set(APP_COMPILER_FLAGS_f6_f7_fps_uac1 ${SW_USB_AUDIO_FLAGS}  -DI2S_CHANS_DAC=2
                                                         -DNUM_USB_CHAN_IN=2
                                                         -DNUM_EX3D_CHAN_OUT=2
                                                         -DMIN_VOLUME=0xE000
-                                                        -DINPUT_VOLUME_CONTROL=1
-                                                        -DOUTPUT_VOLUME_CONTROL=1
+                                                        -DINPUT_VOLUME_CONTROL=0
+                                                        -DOUTPUT_VOLUME_CONTROL=0
                                                         #-DDEBUG_MEMORY_LOG_ENABLED=1
                                                         -DXUA_DFU_EN=1
                                                         -DHID_DFU_EN=1
@@ -230,7 +231,7 @@ set(APP_COMPILER_FLAGS_f6_f7_fps_uac1 ${SW_USB_AUDIO_FLAGS}  -DI2S_CHANS_DAC=2
                                                         -DIR_SWITCHING_MODE
                                                         -DHID_CONTROLS=1)
 
-set(APP_INCLUDES src src/core src/extensions ../../lib_dnr/lib_dnr)
+set(APP_INCLUDES src src/core src/extensions src/extensions/ssrc ../../lib_dnr/lib_dnr)
 set(XMOS_SANDBOX_DIR ${CMAKE_CURRENT_LIST_DIR}/../..)
 
 XMOS_REGISTER_APP()

sw_usb_audio/app_usb_aud_phaten_golden_6ch/gen_factory.bat

@@ -1,3 +1,2 @@
-xflash bin/fact/app_usb_aud_sy102_fact.xe --loader loader.o --upgrade 2 bin/f5_music_uac1/app_usb_aud_sy102_f5_music_uac1.xe --upgrade 3 bin/f1_music_uac2/app_usb_aud_sy102_f1_music_uac2.xe  --upgrade 1 bin/f3_f4_fps_uac2/app_usb_aud_sy102_f3_f4_fps_uac2.xe --upgrade 4 bin/f6_f7_fps_uac1/app_usb_aud_sy102_f6_f7_fps_uac1.xe -o %1
-
-rem --upgrade 4 bin/f6_f7_fps_uac1/app_usb_aud_sy102_f6_f7_fps_uac1.xe
+rem 改动原因：F3/F4 拆分——slot1=F3 Game，slot5=F4 AI7.1
+xflash bin/fact/app_usb_aud_sy102_fact.xe --loader loader.o --upgrade 2 bin/f5_music_uac1/app_usb_aud_sy102_f5_music_uac1.xe --upgrade 3 bin/f1_music_uac2/app_usb_aud_sy102_f1_music_uac2.xe --upgrade 1 ..\..\..\csl_sy102\sw_usb_audio\app_usb_aud_phaten_golden_6ch\bin/f3_fps_uac2/app_usb_aud_sy102_f3_fps_uac2.xe --upgrade 4 bin/f6_f7_fps_uac1/app_usb_aud_sy102_f6_f7_fps_uac1.xe --upgrade 5 ..\..\..\csl_sy102\sw_usb_audio\app_usb_aud_phaten_golden_6ch\bin/f4_fps_uac2/app_usb_aud_sy102_f4_fps_uac2.xe -o %1

sw_usb_audio/app_usb_aud_phaten_golden_6ch/gen_update.bat

@@ -1 +1 @@
-xflash --factory-version 15.3 --target-file src/core/synido.xn --upgrade 2 bin/f5_music_uac1/app_usb_aud_sy102_f5_music_uac1.xe --upgrade 3 bin/f1_music_uac2/app_usb_aud_sy102_f1_music_uac2.xe  --upgrade 1 bin/f3_f4_fps_uac2/app_usb_aud_sy102_f3_f4_fps_uac2.xe --upgrade 4 bin/f6_f7_fps_uac1/app_usb_aud_sy102_f6_f7_fps_uac1.xe -o %1
+xflash --factory-version 15.3 --target-file src/core/synido.xn --upgrade 2 bin/f5_music_uac1/app_usb_aud_sy102_f5_music_uac1.xe --upgrade 3 ..\..\..\csl_sy102\sw_usb_audio\app_usb_aud_phaten_golden_6ch\bin/f1_music_uac2/app_usb_aud_sy102_f1_music_uac2.xe  --upgrade 1 ..\..\..\csl_sy102\sw_usb_audio\app_usb_aud_phaten_golden_6ch\bin/f3_fps_uac2/app_usb_aud_sy102_f3_fps_uac2.xe --upgrade 4 ..\..\..\csl_sy102\sw_usb_audio\app_usb_aud_phaten_golden_6ch\bin/f6_f7_fps_uac1/app_usb_aud_sy102_f6_f7_fps_uac1.xe --upgrade 5 ..\..\..\csl_sy102\sw_usb_audio\app_usb_aud_phaten_golden_6ch\bin/f4_fps_uac2/app_usb_aud_sy102_f4_fps_uac2.xe -o %1

sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/core/xua_conf.h

@@ -147,8 +147,8 @@
 #ifndef PID_AUDIO_2
 #if defined(F1_MUSIC_UAC2)
 #define PID_AUDIO_2        (0x2000)  /* F1: Music, UAC2, Windows */
-#elif defined(F3_F4_FPS_UAC2)
-#define PID_AUDIO_2        (0x2001)  /* F3/F4: FPS/AI7.1, UAC2, Windows */
+#elif defined(F3_FPS_UAC2) || defined(F4_FPS_UAC2)
+#define PID_AUDIO_2        (0x2001)  /* F3 Game / F4 AI7.1, UAC2, Windows */
 #else
 #define PID_AUDIO_2        (0x2000)
 #endif
@@ -167,7 +167,7 @@
 #if defined(F1_MUSIC_UAC2) || defined(F5_MUSIC_UAC1)
 #define PRODUCT_STR_A2     "SY102 Music"
 #define PRODUCT_STR_A1     "SY102 Music"
-#elif defined(F3_F4_FPS_UAC2) || defined(F6_F7_FPS_UAC1)
+#elif defined(F3_FPS_UAC2) || defined(F4_FPS_UAC2) || defined(F6_F7_FPS_UAC1)
 #define PRODUCT_STR_A2     "SY102 AI Game"
 #define PRODUCT_STR_A1     "SY102 AI Game"
 #else

sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/audiohw.xc

@@ -213,11 +213,19 @@ unsigned g_led_blink_is_white = 0;
 #define LED_PURPLE  (LED_RED & LED_BLUE)
 #define LED_WHITE   (LED_RED & LED_GREEN & LED_BLUE)
 enum { OS_WIN = 1, OS_OTHERS = 2 };
-// 改动原因：定义模式切换标志值，用于在SPATIAL_GAME、STEREO_8K、STEREO_2K、UAC1之间循环切换
-#define MODE_F3_F4_FPS_UAC2         COAX_IN_FLAG   //1  SPATIAL_GAME模式标志
-#define MODE_F5_MUSIC_UAC1          USB_IN_FLAG    // 2 F5 MUSIC
-#define MODE_F1_MUSIC_UAC2          OPT_IN_FLAG    // 3 F1 MUSIC
-#define MODE_F6_F7_FPS_UAC1         UAC1_IN_FLAG   // 4  STEREO_2K模式标志
+// 改动原因：F3/F4拆分为独立固件——Game键切F3(COAX/slot1)，AI7.1键切F4(BT/slot5)
+#define MODE_F3_FPS_UAC2            COAX_IN_FLAG   // F3 Game  (upgrade slot 1)
+#define MODE_F5_MUSIC_UAC1          USB_IN_FLAG    // F5 Music UAC1 (upgrade slot 2)
+#define MODE_F1_MUSIC_UAC2          OPT_IN_FLAG    // F1 Music UAC2 (upgrade slot 3)
+#define MODE_F6_F7_FPS_UAC1         UAC1_IN_FLAG   // F6/F7 FPS UAC1 (upgrade slot 4)
+#define MODE_F4_FPS_UAC2            BT_IN_FLAG     // F4 AI7.1  (upgrade slot 5)
+
+// 改动原因：按 game_mode(2=Game/3=AI7.1) 选择 F3 或 F4 固件标志，供启动链与 HID 复用
+static unsigned get_fps_firmware_flag(unsigned mode)
+{
+    if (mode == 3) return MODE_F4_FPS_UAC2;
+    return MODE_F3_FPS_UAC2;  // mode==2 或其它 FPS 模式默认 F3 Game
+}
 
 /* All on tile[0] */
 port p_scl = PORT_I2C_SCL;
@@ -382,7 +390,7 @@ void mic_volume(unsigned level)
     {
         // 改动原因：移除旧版37~38寄存器额外数字增益路径，最大限制到24dB（1~24，1dB/步）。
         debug_printf("mic_volume write reg=%d\n", level);
-        unsafe {NAU88C22_REGWRITE(0x007E, (level << 8), (client interface i2c_master_if)i_i2c_client);}
+        unsafe {NAU88C22_REGWRITE(0x007E, ((level + 4) << 8), (client interface i2c_master_if)i_i2c_client);}
         unsafe {NAU88C22_REGWRITE(0x0035, (0xcfcf), (client interface i2c_master_if)i_i2c_client);}
     }
 }
@@ -535,8 +543,8 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
     // active_mode: 0=off, 1=music (LED_MUSIC, no algorithm),
     //              2=game (LED_GAME_MODE, IR_GAME), 3=AI7.1 (LED_AI7_1, IR_7_1_GAME)
     unsigned active_mode = 0;
-    // 脚步增强3档状态: 0=关(0dB), 1=中亮/6dB, 2=高亮/12dB；出厂默认开启(12dB)
-    unsigned flag_footsteps_enhancement = 2;
+    // 改动原因：脚步增强改为2档——0=关(0dB)，1=开(15dB)；出厂默认开启(15dB)
+    unsigned flag_footsteps_enhancement = 1;
     // 出厂默认：AI降噪开启
     unsigned flag_aidenoise_onoff = 1;
     unsigned dnr_strength_saved = 100;  // AI降噪重新开启时恢复的强度（0x85可更新）
@@ -548,7 +556,7 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
     unsigned push_button_game_mode_state_old = 1; // Active low
     unsigned push_button_footsteps_enhancement_state_old = 0; // Active low
     unsigned push_button_aidenoise_onoff_state_old = 1; // Active low
-    unsigned char saved_footstep = 0;
+    unsigned char saved_footstep = 15;  // 改动原因：与出厂默认15dB一致，flash加载前临时初值
 
 
 
@@ -615,22 +623,26 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
     debug_printf("Loaded game_mode from flash: %d\n", saved_mode);
 
 #if USE_EX3D == 1
-    // 加载脚步增强状态（保存值为expand_gain: 0/6/12）
+    // 改动原因：加载脚步增强（2档 expand_gain: 0/15）；旧固件6/12等非零值迁移为15
     {
         unsigned char footstep_path[] = "footstep";
         saved_footstep = load_value(footstep_path);
         debug_printf("Loaded footstep gain from flash: %d\n", saved_footstep);
         if (saved_footstep == 0) {
             flag_footsteps_enhancement = 0;
-        } else if (saved_footstep <= 6) {
+        } else if (saved_footstep == 15) {
             flag_footsteps_enhancement = 1;
-        } else if (saved_footstep <= 20) {
-            flag_footsteps_enhancement = 2;
+        } else if (saved_footstep > 0 && saved_footstep <= 20) {
+            // 旧3档(6/12)或其它历史非零增益：统一迁移为15dB开档
+            saved_footstep = 15;
+            flag_footsteps_enhancement = 1;
+            save_value(footstep_path, (unsigned char)15);
+            debug_printf("Migrated footstep gain to flash: %d\n", saved_footstep);
         } else {
-            // 未初始化(255)或异常值：出厂默认脚步增强开启(12dB)，写入flash
-            saved_footstep = 12;
-            flag_footsteps_enhancement = 2;
-            save_value(footstep_path, (unsigned char)12);
+            // 未初始化(255)或异常值：出厂默认脚步增强开启(15dB)，写入flash
+            saved_footstep = 15;
+            flag_footsteps_enhancement = 1;
+            save_value(footstep_path, (unsigned char)15);
             debug_printf("Saved footstep gain to flash: %d\n", saved_footstep);
         }
         debug_printf("Loaded footstep gain from flash: %d, state=%d\n", saved_footstep, flag_footsteps_enhancement);
@@ -662,7 +674,8 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
 
     if (host_os == OS_WIN) {
         debug_printf("Detected Windows OS (OS_WIN)  saved_mode: %d\n", saved_mode);
-        unsigned flag = (saved_mode <= 1) ? MODE_F1_MUSIC_UAC2 : MODE_F3_F4_FPS_UAC2;
+        // 改动原因：Windows 下 mode2→F3 Game，mode3→F4 AI7.1，不再共用 F3_F4 合并固件
+        unsigned flag = (saved_mode <= 1) ? MODE_F1_MUSIC_UAC2 : get_fps_firmware_flag(saved_mode);
         SetRoleSwitchFlag(flag);
 #ifndef DISABLE_REBOOT
         device_reboot();
@@ -972,13 +985,10 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
         }
     }
 
-    // 恢复脚步增强LED初始状态
+    // 改动原因：2档脚步增强——仅开档(15dB)点亮LED
     if (flag_footsteps_enhancement == 1) {
         led_on(&led_ctx, LED_FOOTSTEP_MODE);
         led_update_all(&led_ctx);
-    } else if (flag_footsteps_enhancement == 2) {
-        led_set_brightness(&led_ctx, LED_FOOTSTEP_MODE, 128);
-        led_update_all(&led_ctx);
     }
 #endif
 
@@ -1024,7 +1034,7 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
     {
         unsigned music_init, game_init;
         p_button_music_mode :> music_init;
-        p_button_game_mode  :> game_init;
+        p_button_game_mode  :> game_init;//
         if (music_init == 0 && game_init == 0) {
             fr_inhibit = 1;
             btn_combo_active = 1;
@@ -1318,9 +1328,10 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
                 //   Music btn: toggle LED locally (no reboot)
                 //   Game/AI7.1 btn: save mode + reboot (F5 will route to FPS firmware)
                 //
-                // FPS firmware (F3/F4, F6/F7): USE_EX3D set
+                // FPS firmware (F3 Game / F4 AI7.1, F6/F7): USE_EX3D set
                 //   Music btn: save mode=1 + reboot (F5 will route to music firmware)
-                //   Game/AI7.1 btn: switch IR algorithm locally (no reboot)
+                //   F3: Game 本地切 mode2；AI7.1 需重启切 F4
+                //   F4: AI7.1 本地切 mode3；Game 需重启切 F3
 
                 unsigned mode_btn_change = 0;
                 unsigned need_reboot = 0;
@@ -1389,7 +1400,8 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
                         if (!btn_combo_active) {
                             if (btn_music_hold_ticks == BTN_COMBO_DELAY_TICKS) {
                                 debug_printf("Music button pressed for %d ticks\n", BTN_COMBO_DELAY_TICKS);
-#if (F3_F4_FPS_UAC2 == 1)
+#if (F3_FPS_UAC2 == 1) || (F4_FPS_UAC2 == 1)
+                                // 改动原因：F3/F4 FPS 固件按 Music 键切回 F1 Music
                                 active_mode = 1;
                                 need_reboot = 1;
                                 SetRoleSwitchFlag(MODE_F1_MUSIC_UAC2);
@@ -1422,9 +1434,10 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
                             if (btn_game_hold_ticks == BTN_COMBO_DELAY_TICKS) {
                                 debug_printf("Game button pressed for %d ticks\n", BTN_COMBO_DELAY_TICKS);
 #if F1_MUSIC_UAC2 == 1
+                                // 改动原因：Music 固件按 Game 键启动 F3 Game 固件
                                 active_mode = 2;
                                 need_reboot = 1;
-                                SetRoleSwitchFlag(MODE_F3_F4_FPS_UAC2);
+                                SetRoleSwitchFlag(MODE_F3_FPS_UAC2);
 #elif (F5_MUSIC_UAC1 == 1)
                                 // UAC1 Music firmware: game needs F6/F7, reboot if not already game
                                 if (active_mode != 2) {
@@ -1438,11 +1451,17 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
                                     active_mode = 2;
                                     mode_btn_change = 1;
                                 }
-#else
+#elif (F3_FPS_UAC2 == 1)
+                                // 改动原因：已在 F3 Game 固件，Game 键仅本地切 mode2
                                 if (active_mode != 2) {
                                     active_mode = 2;
                                     mode_btn_change = 1;
                                 }
+#elif (F4_FPS_UAC2 == 1)
+                                // 改动原因：F4 AI7.1 固件按 Game 键需重启加载 F3 Game 固件
+                                active_mode = 2;
+                                need_reboot = 1;
+                                SetRoleSwitchFlag(MODE_F3_FPS_UAC2);
 #endif
                             }
                         }
@@ -1458,10 +1477,10 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
                 if (button_ai71_onoff == 0) {
                     if (push_button_ai71_onoff_state_old == 1) {
 #if (F1_MUSIC_UAC2 == 1)
-                        // Music-only firmware: AI7.1 needs FPS firmware
+                        // 改动原因：Music 固件按 AI7.1 键启动 F4 AI7.1 固件
                         active_mode = 3;
                         need_reboot = 1;
-                        SetRoleSwitchFlag(MODE_F3_F4_FPS_UAC2);
+                        SetRoleSwitchFlag(MODE_F4_FPS_UAC2);
 #elif (F5_MUSIC_UAC1 == 1)
                         // UAC1 Music firmware: AI71 needs F6/F7 FPS, reboot if not already AI71
                         if (active_mode != 3) {
@@ -1475,12 +1494,17 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
                             active_mode = 3;
                             mode_btn_change = 1;
                         }
-#else
-                        // FPS firmware: switch algorithm locally (activate if not already)
+#elif (F4_FPS_UAC2 == 1)
+                        // 改动原因：已在 F4 AI7.1 固件，AI7.1 键仅本地切 mode3
                         if (active_mode != 3) {
                             active_mode = 3;
                             mode_btn_change = 1;
                         }
+#elif (F3_FPS_UAC2 == 1)
+                        // 改动原因：F3 Game 固件按 AI7.1 键需重启加载 F4 AI7.1 固件
+                        active_mode = 3;
+                        need_reboot = 1;
+                        SetRoleSwitchFlag(MODE_F4_FPS_UAC2);
 #endif
                     }
                 }
@@ -1493,20 +1517,40 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
                     if (hid_req_mode != (unsigned)-1) {
                         SET_SHARED_GLOBAL(g_request_game_mode, (unsigned)-1);
                         unsigned target = (hid_req_mode <= 3) ? hid_req_mode : 0;
-#if (F3_F4_FPS_UAC2 == 1)
+#if (F3_FPS_UAC2 == 1) || (F4_FPS_UAC2 == 1)
+                        // 改动原因：HID 0xA4 在 F3/F4 间切换需跨固件重启，同固件则本地切算法
                         if (target == 1) {
                             active_mode = target;
                             need_reboot = 1;
                             SetRoleSwitchFlag(MODE_F1_MUSIC_UAC2);
-                        } else {
-                            active_mode = target;
-                            mode_btn_change = 1;
+                        } else if (target == 2) {
+#if (F3_FPS_UAC2 == 1)
+                            if (active_mode != 2) {
+                                active_mode = 2;
+                                mode_btn_change = 1;
+                            }
+#else
+                            active_mode = 2;
+                            need_reboot = 1;
+                            SetRoleSwitchFlag(MODE_F3_FPS_UAC2);
+#endif
+                        } else if (target == 3) {
+#if (F4_FPS_UAC2 == 1)
+                            if (active_mode != 3) {
+                                active_mode = 3;
+                                mode_btn_change = 1;
+                            }
+#else
+                            active_mode = 3;
+                            need_reboot = 1;
+                            SetRoleSwitchFlag(MODE_F4_FPS_UAC2);
+#endif
                         }
 #elif (F1_MUSIC_UAC2 == 1)
                         if (target >= 2) {
                             active_mode = target;
                             need_reboot = 1;
-                            SetRoleSwitchFlag(MODE_F3_F4_FPS_UAC2);
+                            SetRoleSwitchFlag(get_fps_firmware_flag(target));
                         } else {
                             active_mode = target;
                             mode_btn_change = 1;
@@ -1600,8 +1644,8 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
                                 case 3: led_on(&led_ctx, LED_AI7_1);     break;
                                 default: break;
                             }
+                            // 改动原因：2档脚步增强，开档(15dB)恢复全亮LED
                             if (flag_footsteps_enhancement == 1) led_on(&led_ctx, LED_FOOTSTEP_MODE);
-                            else if (flag_footsteps_enhancement == 2) led_set_brightness(&led_ctx, LED_FOOTSTEP_MODE, 128);
                             if (flag_aidenoise_onoff) led_on(&led_ctx, LED_ANC);
                             led_update_all(&led_ctx);
                             // 等待松键，防止重启后再次触发出厂恢复循环
@@ -1615,8 +1659,8 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
                                 delay_milliseconds(100);
                             }
 #endif
-                            // 出厂恢复默认AI7.1模式（mode=3），需要F3/F4固件
-                            SetRoleSwitchFlag(MODE_F3_F4_FPS_UAC2);
+                            // 改动原因：出厂默认 AI7.1(mode=3)，启动 F4 AI7.1 固件
+                            SetRoleSwitchFlag(MODE_F4_FPS_UAC2);
                             delay_milliseconds(20);
 #ifndef DISABLE_REBOOT
                             device_reboot();
@@ -1650,10 +1694,10 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
                 {
                     if(push_button_footsteps_enhancement_state_old == 1)
                     {
-                        // 3档循环: 0(关/0dB) → 1(中亮/6dB) → 2(高亮/12dB) → 0
-                        flag_footsteps_enhancement = (flag_footsteps_enhancement + 1) % 3;
+                        // 改动原因：2档循环: 0(关/0dB) ↔ 1(开/15dB)
+                        flag_footsteps_enhancement = (flag_footsteps_enhancement + 1) % 2;
                         mode_change = 1;
-                        debug_printf("Footstep mode changed: %d -> %d\n", flag_footsteps_enhancement, flag_footsteps_enhancement + 1);
+                        debug_printf("Footstep mode changed to state=%d\n", flag_footsteps_enhancement);
                     }
                 }
                 push_button_footsteps_enhancement_state_old = button_footsteps_enhancement;
@@ -1661,18 +1705,13 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
                 {
                     if(flag_footsteps_enhancement == 0)
                     {
-                        saved_footstep = 0;
+                        saved_footstep = 0;  // 改动原因：关档 0dB
                         led_off(&led_ctx, LED_FOOTSTEP_MODE);
                     }
-                    else if(flag_footsteps_enhancement == 1)
-                    {
-                        saved_footstep = 6;
-                        led_on(&led_ctx, LED_FOOTSTEP_MODE);
-                    }
                     else
                     {
-                        saved_footstep = 12;
-                        led_set_brightness(&led_ctx, LED_FOOTSTEP_MODE, 128);
+                        saved_footstep = 15;  // 改动原因：开档 15dB（唯一增强档）
+                        led_on(&led_ctx, LED_FOOTSTEP_MODE);
                     }
                     led_update_all(&led_ctx);
                     // 发送expand_gain到tile1执行
@@ -1690,30 +1729,29 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
                     GET_SHARED_GLOBAL(hid_gain_req, g_hid_expand_gain_request);
                     if (hid_gain_req != (unsigned)-1) {
                         SET_SHARED_GLOBAL(g_hid_expand_gain_request, (unsigned)-1);
-                        // 将增益值映射到footstep档位
+                        // 改动原因：HID增益映射到2档——0=关，非0=开(15dB)
                         unsigned new_state;
+                        unsigned char gain_to_save;
                         if (hid_gain_req == 0) {
                             new_state = 0;
-                        } else if (hid_gain_req <= 6) {
-                            new_state = 1;
+                            gain_to_save = 0;
                         } else {
-                            new_state = 2;
+                            new_state = 1;
+                            gain_to_save = 15;
                         }
                         if (new_state != (unsigned)flag_footsteps_enhancement) {
                             flag_footsteps_enhancement = (int)new_state;
                             if (flag_footsteps_enhancement == 0) {
                                 led_off(&led_ctx, LED_FOOTSTEP_MODE);
-                            } else if (flag_footsteps_enhancement == 1) {
-                                led_on(&led_ctx, LED_FOOTSTEP_MODE);
                             } else {
-                                led_set_brightness(&led_ctx, LED_FOOTSTEP_MODE, 128);
+                                led_on(&led_ctx, LED_FOOTSTEP_MODE);
                             }
                             led_update_all(&led_ctx);
                         }
 
                         unsigned char fp[] = "footstep";
-                        save_value(fp, (unsigned char)hid_gain_req);
-                        saved_footstep = hid_gain_req;
+                        save_value(fp, gain_to_save);
+                        saved_footstep = gain_to_save;
                         debug_printf("HID set footstep gain=%d, state=%d\n", hid_gain_req, flag_footsteps_enhancement);
                     }
                 }
@@ -2431,7 +2469,8 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
 #if UAC1_MODE == 1
                 GET_SHARED_GLOBAL(host_os, g_host_os);
                 if (host_os == OS_WIN) {
-                    unsigned flag = (saved_mode <= 1) ? MODE_F1_MUSIC_UAC2 : MODE_F3_F4_FPS_UAC2;
+                    // 改动原因：运行时 OS 检测为 Windows 时按 mode 路由 F1/F3/F4
+                    unsigned flag = (saved_mode <= 1) ? MODE_F1_MUSIC_UAC2 : get_fps_firmware_flag(saved_mode);
                     SetRoleSwitchFlag(flag);
 #ifndef DISABLE_REBOOT
                     device_reboot();

sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/br_wrapper.c

@@ -9,25 +9,38 @@
 #include <xs1.h>
 #include <xcore/chanend.h>
 #include <xcore/channel.h>
+#include <xcore/channel_streaming.h>
 #include "xc_ptr.h"
 
 #include "xua_conf.h"
-
 #include "share_buffer.h"
 
 extern uint32_t init_eq_data(unsigned sample_freq);
 
+#if F1_MUSIC_UAC2 == 1 && DNR_ENABLE == 1
+/* 改动原因：3 streaming chan + 1 普通 chan 传 us 192kHz（跨 tile 静态内存不共享） */
+uint32_t uc_ssrc_ds_in;    /* tile[0]→tile[1] 192kHz mic */
+uint32_t uc_ssrc_ds_out;   /* tile[1]→tile[0] 48kHz 降采样结果 */
+uint32_t uc_ssrc_us_in;    /* tile[0]→tile[1] 48kHz DNR 后 */
+uint32_t uc_ssrc_us_out;   /* tile[1]→tile[0] 192kHz 升采样结果（普通chan） */
+#endif
+
 void dnr_exchange_buffer(int32_t *data);
 
 // sample_freq 作为首字发送给 tile[0] 的 dsp_main，用于采样率变化检测和 EQ 初始化
 void buffer_exchange(chanend_t c_data, unsigned sampsFromUsbToAudio[], unsigned sampsFromAudioToUsb[], unsigned sample_freq) {
-    chan_out_word(c_data, sample_freq);
-    chan_out_buf_word (c_data, sampsFromUsbToAudio, 2);
-    chan_in_buf_word  (c_data , sampsFromUsbToAudio, 2);
-#if DNR_ENABLE == 1
-    chan_out_buf_word (c_data, sampsFromAudioToUsb, 2);
-    chan_in_buf_word  (c_data , sampsFromAudioToUsb, 2);
-#endif
+    unsigned data_in[4] = {0,0,0,0};
+    unsigned data_out[4] = {0,0,0,0};
+    data_in[0] = sampsFromUsbToAudio[0];
+    data_in[1] = sampsFromUsbToAudio[1];
+    data_in[2] = sampsFromAudioToUsb[0];
+    data_in[3] = sampsFromAudioToUsb[1];
+    chan_out_buf_word (c_data, data_in, 4);
+    chan_in_buf_word  (c_data , data_out, 4);
+    sampsFromUsbToAudio[0] = data_out[0];
+    sampsFromUsbToAudio[1] = data_out[1];
+    sampsFromAudioToUsb[0] = data_out[2];
+    sampsFromAudioToUsb[1] = data_out[3];
 }
 
 
@@ -38,40 +51,111 @@ void dsp_main (chanend_t c_data) {
     int mic_output[I2S_CHANS_ADC];
     int count = 0;
     unsigned ch[1] = {2};
+    unsigned data_in[4] = {0,0,0,0};
+    unsigned data_out[4] = {0,0,0,0};
 #if F1_MUSIC_UAC2 == 1
-    unsigned current_sample_freq = 0;
+    unsigned current_sample_freq = 192000;
 #else
     unsigned current_sample_freq = 48000;
 #endif
-    while (1) {
-        unsigned sample_freq = (unsigned)chan_in_word(c_data);
-        chan_in_buf_word (c_data , play_input, 2);
 
-        // 采样率变化：重新初始化 EQ 系数并清空 ring buffer，避免残留状态污染
-        if (sample_freq != current_sample_freq && sample_freq != 0) {
-            current_sample_freq = sample_freq;
-            init_eq_data(sample_freq);
-            clear_ring_buffer(0);
-            clear_ring_buffer(1);
-            clear_ring_buffer(2);
-            clear_ring_buffer(3);
-            play_output[0] = 0;
-            play_output[1] = 0;
+#if F1_MUSIC_UAC2 == 1 && DNR_ENABLE == 1
+    static int mic_48k[2]      = {0, 0};
+    static int us_cache[4][2]  = {{0}};
+    static int us_cache_idx    = 4;   /* 4=无有效缓存输出静音；0-3=当前消费 pair 索引 */
+    static int ds_tick         = 0;   /* 每拍+1，满4拍处理一次 48kHz */
+    /* 改动原因：第一个 tick4 时 us_out 还没有数据，不能阻塞读；
+     * 之后每个 tick4 先读上一批（已就绪）再触发下一批，规避同拍等待 us_stereo 计算延迟 */
+    static int us_first_batch  = 1;
+#endif
+
+    init_eq_data(current_sample_freq);
+    clear_ring_buffer(0);
+    clear_ring_buffer(1);
+    clear_ring_buffer(2);
+    clear_ring_buffer(3);
+#if F1_MUSIC_UAC2 == 1 && DNR_ENABLE == 1
+            /* 改动原因：采样率变化时复位所有 SSRC 状态，下一批重新从头开始 */
+            ds_tick        = 0;
+            us_cache_idx   = 4;
+            us_first_batch = 1;
+#endif
+ 
+    while (1) {
+        chan_in_buf_word(c_data, data_in, 4);
+        chan_out_buf_word(c_data, data_out, 4);
+
+#if EQ_ENABLE == 1
+        write_to_ring_buffer(0, data_in[0]);
+        write_to_ring_buffer(1, data_in[1]);
+        data_out[0] = read_from_ring_buffer(2);
+        data_out[1] = read_from_ring_buffer(3);
+//        data_out[0] = data_in[0];
+//        data_out[1] = data_in[1];
+#else
+        data_out[0] = data_in[0];
+        data_out[1] = data_in[1];
+#endif
+
+#if DNR_ENABLE == 1
+  #if F1_MUSIC_UAC2 == 1
+        /* F1: 192kHz→48kHz(DS)→DNR→48kHz→192kHz(US)
+         *
+         * 时序优化说明：
+         *   原设计在 tick4 同一拍内"发 us_in → 等 us_stereo 计算 → 读8个 us_out"，
+         *   us_stereo 在 tile[1] 独立线程运算需 2-5µs，导致 tick4 总延迟超过 5.2µs
+         *   (192kHz 单拍周期)，buffer_exchange 响应超时引发噪音。
+         *
+         *   当前设计：每个 tick4 先读上一批已就绪的 8 个 us_out 字（us_rec_output_core
+         *   在前 3 拍期间已完成并阻塞等待消费，读取近乎零延迟），再触发本批 ds→DNR→us_in。
+         *   代价：录音延迟增加约 20.8µs（一个 48kHz 周期），人耳不可感知。
+         */
+        s_chan_out_word((chanend_t)uc_ssrc_ds_in, (uint32_t)data_in[2]);
+        s_chan_out_word((chanend_t)uc_ssrc_ds_in, (uint32_t)data_in[3]);
+        ds_tick++;
+
+        if (ds_tick >= 4) {
+            ds_tick = 0;
+
+            if (!us_first_batch) {
+                /* 读上一批 us_stereo 已生产的 4 对 192kHz（近乎无延迟）*/
+                us_cache[0][0] = (int)chan_in_word((chanend_t)uc_ssrc_us_out);
+                us_cache[0][1] = (int)chan_in_word((chanend_t)uc_ssrc_us_out);
+                us_cache[1][0] = (int)chan_in_word((chanend_t)uc_ssrc_us_out);
+                us_cache[1][1] = (int)chan_in_word((chanend_t)uc_ssrc_us_out);
+                us_cache[2][0] = (int)chan_in_word((chanend_t)uc_ssrc_us_out);
+                us_cache[2][1] = (int)chan_in_word((chanend_t)uc_ssrc_us_out);
+                us_cache[3][0] = (int)chan_in_word((chanend_t)uc_ssrc_us_out);
+                us_cache[3][1] = (int)chan_in_word((chanend_t)uc_ssrc_us_out);
+                us_cache_idx = 0;
+            }
+
+            /* 处理当前批：ds→DNR→us_in，结果在下一个 tick4 读取 */
+            mic_48k[0] = (int)s_chan_in_word((chanend_t)uc_ssrc_ds_out);
+            mic_48k[1] = (int)s_chan_in_word((chanend_t)uc_ssrc_ds_out);
+            dnr_exchange_buffer(mic_48k);
+            s_chan_out_word((chanend_t)uc_ssrc_us_in, (uint32_t)mic_48k[0]);
+            s_chan_out_word((chanend_t)uc_ssrc_us_in, (uint32_t)mic_48k[1]);
+
+            us_first_batch = 0;
         }
 
-        chan_out_buf_word (c_data , play_output, I2S_CHANS_DAC);
-#if DNR_ENABLE == 1
-        chan_in_buf_word (c_data , mic_input, 2) ;
-        chan_out_buf_word (c_data , mic_output, I2S_CHANS_ADC);
-#endif
-        write_to_ring_buffer(0, play_input[0]);
-        write_to_ring_buffer(1, play_input[1]);
-        play_output[0] = read_from_ring_buffer(2);
-        play_output[1] = read_from_ring_buffer(3);
-#if DNR_ENABLE == 1
-        dnr_exchange_buffer(mic_input);
-        mic_output[0] = mic_input[0];
-        mic_output[1] = mic_input[1];
+        if (us_cache_idx < 4) {
+            data_out[2] = us_cache[us_cache_idx][0];
+            data_out[3] = us_cache[us_cache_idx][1];
+            us_cache_idx++;
+        } else {
+            data_out[2] = 0;
+            data_out[3] = 0;
+        }
+  #else
+        dnr_exchange_buffer((int32_t *)&data_in[2]);
+        data_out[2] = data_in[2];
+        data_out[3] = data_in[3];
+  #endif
+#else
+        data_out[2] = data_in[2];
+        data_out[3] = data_in[3];
 #endif
     }
 }

sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/dfu_flash_interface.c

@@ -8,15 +8,12 @@
 #include <xclib.h>
 #include <stdio.h>
 #include "debug_print.h"
+#include "dfu_upgrade.h"
 
 #include "xua.h"
 
 #if HID_DFU_EN
 
-#ifndef DFU_FLASH_MAX_UPGRADE_SIZE
-#define DFU_FLASH_MAX_UPGRADE_SIZE (2200 * 1024)
-#endif
-
 #define DFU_FLASH_ERROR()
 
 static int dfu_flash_device_open = 0;

sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/dfu_upgrade.c

@@ -95,7 +95,7 @@ unsigned char handle_firmware_upgrade_start(uint8_t data[], uint16_t len)
 
     debug_printf("g_first_page_write_executed: %d\n", g_first_page_write_executed);
 
-    if (firmware_size == 0 || firmware_size > FLASH_MAX_UPGRADE_SIZE) {
+    if (firmware_size == 0 || firmware_size > DFU_FLASH_MAX_UPGRADE_SIZE) {
         debug_printf("Firmware upgrade error: invalid size %lu\n", firmware_size);
         response[0] = STATUS_SIZE_INVALID;
         send_firmware_upgrade_response(FIRMWARE_UPGRADE_START, response, 1);

sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/dfu_upgrade.h

@@ -44,7 +44,11 @@ typedef enum {
 // 数据包格式：同步头(1) + 命令码(1) + 块序号(2) + 数据长度(1) + 数据(N) + Checksum(1)
 // 所以最大数据长度 = 63 - 5(头部) - 1(Checksum) = 57字节
 #define MAX_DATA_BLOCK_SIZE         57      // 最大数据块大小（63字节HID数据包 - 5字节头部 - 1字节Checksum）
-#define FLASH_MAX_UPGRADE_SIZE      (2000 * 1024)  // 最大固件大小1400KB
+
+#ifndef DFU_FLASH_MAX_UPGRADE_SIZE
+#define DFU_FLASH_MAX_UPGRADE_SIZE (3000 * 1024)
+#endif
+
 
 // 页缓冲区结构
 typedef struct {

sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/dsp.c

@@ -53,7 +53,7 @@ static volatile int g_runtime_angle_written = 0;
 // 通过该标志判断EX3D是否已完成初始化，若已完成则在收到0xF9时立即应用角度。
 static volatile int g_ex3d_init_done = 0;
 // audio_ex3d_init会覆盖Ex3dExpandGain为库默认值；用此变量保存0xFD boot sync收到的值
-static volatile int32_t g_boot_footstep_expand_gain_value = 12;
+static volatile int32_t g_boot_footstep_expand_gain_value = 15;  // 改动原因：脚步增强默认15dB（2档：0/15）
 static volatile int32_t g_boot_lmt_threshold_value = -5;
 static volatile uint32_t g_boot_angle_values[8] = {315, 45, 0, 0, 225, 135, 270, 90};
 
@@ -299,6 +299,7 @@ void UserBufferManagement(unsigned sampsFromUsbToAudio[], unsigned sampsFromAudi
 #elif DNR_ENABLE == 1
     buffer_exchange(uc_eq_data, sampsFromUsbToAudio, sampsFromAudioToUsb, ubm_sample_freq);
 #endif
+
     GET_SHARED_GLOBAL(is_monitor, g_monitor_switch_t1);
     if (is_monitor) {
         sampsFromUsbToAudio[0] += (unsigned)((((int)sampsFromAudioToUsb[0]) >> 1));
@@ -1175,7 +1176,8 @@ void ex3d_task(){
     }
 
     // audio_ex3d_init内部会将Ex3dExpandGain重置为库默认值(6)，这里始终用保存值恢复
-    Ex3dExpandGain = g_boot_footstep_expand_gain_loaded ? g_boot_footstep_expand_gain_value : 12;
+    // 改动原因：无flash/boot同步时脚步增强默认15dB（原12dB为旧3档高亮档）
+    Ex3dExpandGain = g_boot_footstep_expand_gain_loaded ? g_boot_footstep_expand_gain_value : 15;
     Ex3dLimiterThreshold = g_boot_lmt_threshold_loaded ? g_boot_lmt_threshold_value : -15;
 
     EX3DAudio_SetOnGain(Ex3dOnGain);

sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/dsp_core0.xc

@@ -1,5 +1,5 @@
 #if DEBUG_MEMORY_LOG_ENABLED
-#define DEBUG_PRINT_ENABLE 1
+#define DEBUG_PRINT_ENABLE 0
 #else
 #define DEBUG_PRINT_ENABLE 0
 #endif

sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/lfs_services.c

@@ -22,7 +22,7 @@ swlock_t flash_lock = SWLOCK_INITIAL_VALUE;
 static rtos_qspi_flash_t qspi_flash_ctx_s;
 #define FLASH_CLKBLK XS1_CLKBLK_3
 #ifndef FS_BASE_ADDR
-#define FS_BASE_ADDR (2500 * 1024)
+#define FS_BASE_ADDR (3500 * 1024)
 #endif
 #define SECTOR_SIZE  4096
 rtos_qspi_flash_t *qspi_flash_ctx = &qspi_flash_ctx_s;

sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/main.xc

@@ -2,6 +2,16 @@
 // This Software is subject to the terms of the XMOS Public Licence: Version 1.
 
 #include "xua.h"                          /* Device specific defines */
+
+#if F1_MUSIC_UAC2 == 1 && DNR_ENABLE == 1
+#include "ssrc_rec_core.h"
+/* 改动原因：3 streaming + 1 普通 chan；us 192kHz 走普通 chan（跨 tile 内存不共享） */
+extern uint32_t uc_ssrc_ds_in;
+extern uint32_t uc_ssrc_ds_out;
+extern uint32_t uc_ssrc_us_in;
+extern uint32_t uc_ssrc_us_out;
+#endif
+
 #ifdef EXCLUDE_USB_AUDIO_MAIN
 
 /**
@@ -540,6 +550,14 @@ int main()
 
     USER_MAIN_DECLARATIONS
 
+#if F1_MUSIC_UAC2 == 1 && DNR_ENABLE == 1
+    /* 改动原因：streaming chan 有 tile 配额上限；us 192kHz 用普通 chan 传 8 word/块 */
+    streaming chan c_ssrc_ds_in;
+    streaming chan c_ssrc_ds_out;
+    streaming chan c_ssrc_us_in;
+    chan c_ssrc_us_out;
+#endif
+
     chan c_dsp_to_ex3d[DSP_WORKER_COUNT];
     chan cc_mic_level;
     chan c_audiohw;
@@ -582,6 +600,11 @@ int main()
           }
         }
         on tile[1]: mute_handler(c_mic_det);
+#if F1_MUSIC_UAC2 == 1 && DNR_ENABLE == 1
+        on tile[1] : ds_rec_core(c_ssrc_ds_in, c_ssrc_ds_out);
+        on tile[1] : us_rec_core(c_ssrc_us_in);
+        on tile[1] : us_rec_output_core(c_ssrc_us_out);
+#endif
 
         on tile[0] : {
           par {
@@ -611,7 +634,17 @@ int main()
             dsp_core0();
           }
         }
-        on tile[0] : { dsp_main(c_eq_data); }
+        on tile[0] : {
+#if F1_MUSIC_UAC2 == 1 && DNR_ENABLE == 1
+            unsafe {
+                uc_ssrc_ds_in   = (uint32_t)(unsigned)(streaming chanend)c_ssrc_ds_in;
+                uc_ssrc_ds_out  = (uint32_t)(unsigned)(streaming chanend)c_ssrc_ds_out;
+                uc_ssrc_us_in   = (uint32_t)(unsigned)(streaming chanend)c_ssrc_us_in;
+                uc_ssrc_us_out  = (uint32_t)(unsigned)(chanend)c_ssrc_us_out;
+            }
+#endif
+            dsp_main(c_eq_data);
+        }
 #endif
 
 #if DNR_ENABLE == 1

sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/ssrc/ds_stereo.S

@@ -0,0 +1,187 @@
+#define FUNCTION_NAME ds_stereo
+
+/*
+void ds_stereo(
+    int32_t final_shr, 
+    int32_t * coefs, 
+    int32_t * data, 
+    chanend_t c_in,
+    chanend_t c_out,
+    int32_t num_phase);
+*/
+
+    #define NSTACKWORDS 32
+
+    #define S_LEFT 0
+    #define S_RIGHT 1
+    #define S_LOOP_COUNT 2
+    #define S_COEF_BASE_POINTER 3
+
+    .cc_top FUNCTION_NAME.function
+    .type   FUNCTION_NAME,@function
+
+    .issue_mode dual
+    .align 4
+#define ONE 0x40000000
+zeros:
+    .word 0, 0, 0, 0, 0, 0, 0, 0
+left_chan:
+    .word 0, 0, 0, 0, ONE, ONE, ONE, ONE
+right_chan:
+    .word ONE, ONE, ONE, ONE, 0, 0, 0, 0
+    .align 16
+    .globl FUNCTION_NAME
+.globl FUNCTION_NAME.nstackwords
+.set   FUNCTION_NAME.nstackwords, 32
+FUNCTION_NAME:
+    { dualentsp NSTACKWORDS;}
+
+    stw r4, sp[20]
+    stw r5, sp[21]
+    stw r6, sp[22]
+    stw r7, sp[23]
+    stw r8, sp[24]
+    stw r9, sp[25]
+    stw r10, sp[26]
+
+    ldw r4, sp[NSTACKWORDS+1]
+    stw r4, sp[27]
+
+
+    //{mov r0, r0; mov r1, r1}
+    //{mov r2, r2; mov r3, r3}
+
+    #define CHANNELS 2
+    #define MACCRS_PER_PHASE 4
+    #define BYTES_PER_WORD 4
+    #define WORDS_PER_VECTOR 8
+    #define BYTES_PER_VECTOR (WORDS_PER_VECTOR*BYTES_PER_WORD)
+    
+    ldc r10, (BYTES_PER_VECTOR+BYTES_PER_WORD)
+    ldc r9, BYTES_PER_VECTOR
+    ldc r8, (2*MACCRS_PER_PHASE-1)*BYTES_PER_VECTOR - 4 + (BYTES_PER_VECTOR+BYTES_PER_WORD) + 4
+    ldc r7, MACCRS_PER_PHASE*BYTES_PER_VECTOR
+    ldc r6, ((1<<(BYTES_PER_WORD*CHANNELS))-1)
+
+    //load number of phases - 1 to r11
+    ldw r11, sp[NSTACKWORDS+2]
+    sub r11, r11, 1
+    // jump to passthrough loop if num of phases is 1
+    bf r11, passthrough_loop
+    std r1, r11, sp[1]
+    //store the final_shr for the VLSAT 
+    std r0, r0, sp[2]
+    std r0, r0, sp[3]
+    std r0, r0, sp[4]
+    std r0, r0, sp[5]
+
+   
+    ldc r11, (MACCRS_PER_PHASE-1)*BYTES_PER_VECTOR - 4 + 4 //the final +4 is for the padding at the origin
+    {add r2, r2, r11; nop }
+
+outer_loop:
+    ldc r11, (MACCRS_PER_PHASE-1)*BYTES_PER_VECTOR
+    {vclrdr ; add r11, r2, 0}         //clear accu and reset data pointer
+    ldd r1, r4, sp[1]                 // set loop counter and coef base pointer
+
+phase_loop:
+
+    //{nop; nop}
+    //{nop; nop}
+    //{nop; nop}
+
+    //MACCR 1 left
+    {vldc r11[0]; add r11, r11, BYTES_PER_WORD}
+    {vlmaccr r1[0]; add r1, r1, r9} 
+    {vstc r11[0]; sub r11, r11, r10}
+
+    //MACCR 2 left
+    {vldc r11[0]; add r11, r11, BYTES_PER_WORD}
+    {vlmaccr r1[0]; add r1, r1, r9} 
+    {vstc r11[0]; sub r11, r11, r10}
+
+    //MACCR 3 left
+    {vldc r11[0]; add r11, r11, BYTES_PER_WORD}
+    {vlmaccr r1[0]; add r1, r1, r9} 
+    {vstc r11[0]; sub r11, r11, r10}
+
+    {testct r0, res[r3]; nop}
+    {bt r0, exit; nop}
+    {in r0, res[r3] ; nop }               //fetch data from channel, then get the other one too
+    {stw r0, r11[0] ; in r5, res[r3] }    //store to start of phase
+
+    //MACCR 4 left
+    {vldc r11[0]; add r11, r11, BYTES_PER_WORD}
+    {vlmaccr r1[0]; add r1, r1, r9} 
+    {vstc r11[0]; sub r11, r11, r10}
+
+
+    //rewind r1 by MACCRS_PER_PHASE * BYTES_PER_VECTOR
+    {sub r1, r1, r7; add r11, r11, r8 }
+
+    //now do the right channel
+    {vldc r11[0]; add r11, r11, BYTES_PER_WORD}
+    {vlmaccr r1[0]; add r1, r1, r9} 
+    {vstc r11[0]; sub r11, r11, r10} //r10 = 32 + 1
+
+    //MACCR 2 right
+    {vldc r11[0]; add r11, r11, BYTES_PER_WORD}
+    {vlmaccr r1[0]; add r1, r1, r9} 
+    {vstc r11[0]; sub r11, r11, r10}
+
+    //MACCR 3 right
+    {vldc r11[0]; add r11, r11, BYTES_PER_WORD}
+    {vlmaccr r1[0]; add r1, r1, r9} 
+    {vstc r11[0]; sub r11, r11, r10}
+
+    {stw r5, r11[0] ; nop }                //store to start of phase
+
+    //MACCR 4 right
+    {vldc r11[0]; add r11, r11, BYTES_PER_WORD}
+    {vlmaccr r1[0]; add r1, r1, r9} 
+    {vstc r11[0]; sub r11, r11, r10}
+
+    {nop;       add r11, r11, r8 }             //advance to next phase
+
+    {bt r4, phase_loop; sub r4, r4, 1}
+ 
+    ldaw r11, sp[4]
+    {vlsat r11[0]; nop}  //turn all accumulators into 32 bits
+
+    ldaw r11, sp[12]
+    {vstr r11[0]; nop}
+    {vldc r11[0];ldap r11, right_chan}
+    {vclrdr; nop}
+    {vlmaccr r11[0];ldap r11, left_chan}
+    {vlmaccr r11[0]; ldap r11, zeros}
+
+       
+    {vlsat r11[0]; ldaw r11, sp[0]}
+    vstrpv r11[0], r6
+
+    ldd r11, r4, sp[0]
+    // load c_out from stack to r1
+    ldw r1, sp[27]
+    {out res[r1], r4; nop}
+    {bu outer_loop;out res[r1], r11}
+
+passthrough_loop:
+    {testct r11, res[r3]; nop}
+    {bt r11, exit; nop}
+    {in r11, res[r3]; nop}
+    {out res[r4], r11; nop}
+    {in r11, res[r3]; nop}
+    {bu passthrough_loop; out res[r4], r11}
+
+exit:
+    {inct r0, res[r3]; nop}
+    ldw r4, sp[20]
+    ldw r5, sp[21]
+    ldw r6, sp[22]
+    ldw r7, sp[23]
+    ldw r8, sp[24]
+    ldw r9, sp[25]
+    ldw r10, sp[26]
+    retsp NSTACKWORDS
+
+    .cc_bottom FUNCTION_NAME.function

sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/ssrc/ssrc_coefs.h

@@ -0,0 +1,53 @@
+#ifndef _SSRC_COEFS_H_
+#define _SSRC_COEFS_H_
+
+#include <stdint.h>
+
+/* Downsample ratio=4, 48kHz base — 128 coefficients */
+static int32_t ds4_48000_coefs[128] = {
+    4192603,   -2703925,    1667738,    -971500,     525063,    -255689,     105964,       5666,
+  147741797,  -66167732,   40186648,  -26923243,   18716201,  -13134162,    9159092,   -6278295,
+   -8394794,   12071368,  -17195979,   24612481,  -36235752,   57613909, -114155284, 1046129870,
+     -80960,     208765,    -445117,     844122,   -1474686,    2422662,   -3794257,    5724570,
+   11257906,   -7331064,    4577066,   -2707960,    1493638,    -748452,     324772,    -145564,
+  502280711, -186846312,  108570992,  -71571731,   49475933,  -34709734,   24277296,  -16731888,
+  -18415916,   26595074,  -37942809,   54167579,  -78966289,  122300118, -223331678,  840288039,
+    -149225,     407138,    -899861,    1748155,   -3108937,    5178122,   -8198765,   12476764,
+   12476764,   -8198765,    5178122,   -3108937,    1748155,    -899861,     407138,    -149225,
+  840288039, -223331678,  122300118,  -78966289,   54167579,  -37942809,   26595074,  -18415916,
+  -16731888,   24277296,  -34709734,   49475933,  -71571731,  108570992, -186846312,  502280711,
+    -145564,     324772,    -748452,    1493638,   -2707960,    4577066,   -7331064,   11257906,
+    5724570,   -3794257,    2422662,   -1474686,     844122,    -445117,     208765,     -80960,
+ 1046129870, -114155284,   57613909,  -36235752,   24612481,  -17195979,   12071368,   -8394794,
+   -6278295,    9159092,  -13134162,   18716201,  -26923243,   40186648,  -66167732,  147741797,
+       5666,     105964,    -255689,     525063,    -971500,    1667738,   -2703925,    4192603,
+};
+
+/* Upsample ratio=4, 48kHz base — 128 coefficients */
+static int32_t us4_48000_coefs[128] = {
+     -80960,     208765,    -445117,     844122,   -1474686,    2422662,   -3794257,    5724570,
+    -149225,     407138,    -899861,    1748155,   -3108937,    5178122,   -8198765,   12476764,
+    -8394794,   12071368,  -17195979,   24612481,  -36235752,   57613909, -114155284, 1046129870,
+   147741797,  -66167732,   40186648,  -26923243,   18716201,  -13134162,    9159092,   -6278295,
+     4192603,   -2703925,    1667738,    -971500,     525063,    -255689,     105964,       5666,
+    11257906,   -7331064,    4577066,   -2707960,    1493638,    -748452,     324772,    -145564,
+     -145564,     324772,    -748452,    1493638,   -2707960,    4577066,   -7331064,   11257906,
+        5666,     105964,    -255689,     525063,    -971500,    1667738,   -2703925,    4192603,
+    -16731888,   24277296,  -34709734,   49475933,  -71571731,  108570992, -186846312,  502280711,
+     -6278295,    9159092,  -13134162,   18716201,  -26923243,   40186648,  -66167732,  147741797,
+  502280711, -186846312,  108570992,  -71571731,   49475933,  -34709734,   24277296,  -16731888,
+  -18415916,   26595074,  -37942809,   54167579,  -78966289,  122300118, -223331678,  840288039,
+    12476764,   -8198765,    5178122,   -3108937,    1748155,    -899861,     407138,    -149225,
+     5724570,   -3794257,    2422662,   -1474686,     844122,    -445117,     208765,     -80960,
+ 1046129870, -114155284,   57613909,  -36235752,   24612481,  -17195979,   12071368,   -8394794,
+   -6278295,    9159092,  -13134162,   18716201,  -26923243,   40186648,  -66167732,  147741797,
+};
+
+#define SSRC_DS4_48K_FINAL_SHR  2
+#define SSRC_US4_FINAL_SHR      0
+#define SSRC_US4_HISTORY_OFFSET (32*4)
+#define SSRC_US4_NUM_PHASE      4
+#define SSRC_US4_PHASE_SIZE     4
+#define SSRC_RB_SIZE            (2*32*5+32)
+
+#endif

sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/ssrc/ssrc_rec_core.h

@@ -0,0 +1,33 @@
+#ifndef _SSRC_REC_CORE_H_
+#define _SSRC_REC_CORE_H_
+
+#if F1_MUSIC_UAC2 == 1
+
+#include <xs1.h>
+#include <platform.h>
+
+/**
+ * Downsample recording core — runs on tile[1]
+ * Uses two streaming channels (ds_stereo.S 需要独立 c_in/c_out，不能别名):
+ *   - c_from_tile0: tile[0]→tile[1] 192kHz stereo input
+ *   - c_to_tile0:   tile[1]→tile[0] 48kHz  stereo output
+ */
+void ds_rec_core(streaming chanend c_from_tile0, streaming chanend c_to_tile0);
+
+/**
+ * Upsample recording core — runs on tile[1]
+ * 改动原因：us_stereo.S 是持续运行函数，只会在控制 token 时返回；
+ * 因此本 core 只负责把 48kHz 输入升采样写入 tile[1] 本地 ring buffer。
+ */
+void us_rec_core(streaming chanend c_us_in);
+
+/**
+ * Upsample output sender — runs on tile[1]
+ * 改动原因：从 us_rec_core 写入的 tile[1] 本地 ring buffer 取 192kHz 数据，
+ * 通过普通 channel 发回 tile[0]，避免等待 us_stereo.S 返回导致死锁。
+ */
+void us_rec_output_core(chanend c_us_out);
+
+#endif
+
+#endif

sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/ssrc/ssrc_rec_core.xc

@@ -0,0 +1,128 @@
+#if F1_MUSIC_UAC2 == 1
+
+#include "ssrc_rec_core.h"
+#include <xs1.h>
+#include <platform.h>
+#include <string.h>
+#include "ssrc_coefs.h"
+#include "ssrc_us_share_buf.h"
+
+#ifndef SET_SAMPLE_FREQ
+#define SET_SAMPLE_FREQ 1
+#endif
+
+#ifndef NUM_USB_CHAN_OUT
+#define NUM_USB_CHAN_OUT 2
+#endif
+
+/* Assembly function declarations */
+extern unsigned char ds_stereo(
+    int32_t final_shr,
+    int32_t *coefs,
+    int32_t *data,
+    streaming chanend c_in,
+    streaming chanend c_out,
+    int32_t num_phase);
+
+extern unsigned char us_stereo(
+    int32_t *coefs,
+    int32_t *l_history,
+    int32_t *r_history,
+    streaming chanend c_in,
+    int32_t history_offset,
+    uint32_t ring_buffer_addr,
+    uint32_t tail_addr,
+    int32_t ring_buffer_size,
+    int32_t num_phase,
+    int32_t phase_size,
+    int32_t final_shr);
+
+#pragma unsafe arrays
+void ds_rec_core(streaming chanend c_from_tile0, streaming chanend c_to_tile0)
+{
+    int32_t history[1057];
+    unsigned char control_token;
+
+    memset(history, 0, sizeof(history));
+    set_core_high_priority_on();
+
+    while (1) {
+        control_token = ds_stereo(
+            SSRC_DS4_48K_FINAL_SHR,
+            ds4_48000_coefs,
+            history,
+            c_from_tile0,   /* c_in:  read 192kHz from tile[0] */
+            c_to_tile0,     /* c_out: write 48kHz back to tile[0] */
+            4
+        );
+
+        switch (control_token) {
+        case SET_SAMPLE_FREQ:
+            memset(history, 0, sizeof(history));
+            {
+                unsigned dummy;
+                c_from_tile0 :> dummy;
+            }
+            soutct(c_to_tile0, SET_SAMPLE_FREQ);
+            for (size_t i = 0; i < NUM_USB_CHAN_OUT * 3; ++i) {
+                c_to_tile0 <: 0;
+            }
+            break;
+        default:
+            break;
+        }
+    }
+}
+
+#pragma unsafe arrays
+void us_rec_core(streaming chanend c_us_in)
+{
+    int32_t l_history[64];
+    int32_t r_history[64];
+    unsigned char control_token;
+
+    memset(l_history, 0, sizeof(l_history));
+    memset(r_history, 0, sizeof(r_history));
+    ssrc_us_share_reset();
+
+    while (1) {
+        /* 改动原因：us_stereo.S 是持续运行的生产者，只有收到控制 token 才返回。
+         * 正常音频路径不要在此函数后面发送数据，否则永远执行不到。 */
+        control_token = us_stereo(
+            us4_48000_coefs,
+            l_history, r_history,
+            c_us_in,
+            SSRC_US4_HISTORY_OFFSET,
+            ssrc_us_share_get_buffer_addr(),
+            ssrc_us_share_get_tail_addr(),
+            SSRC_US_RB_WORDS - 32,
+            SSRC_US4_NUM_PHASE,
+            SSRC_US4_PHASE_SIZE,
+            SSRC_US4_FINAL_SHR
+        );
+
+        switch (control_token) {
+        case SET_SAMPLE_FREQ:
+            memset(l_history, 0, sizeof(l_history));
+            memset(r_history, 0, sizeof(r_history));
+            ssrc_us_share_reset();
+            {
+                unsigned dummy;
+                c_us_in :> dummy;
+            }
+            break;
+        default:
+            break;
+        }
+    }
+}
+
+void us_rec_output_core(chanend c_us_out)
+{
+    while (1) {
+        /* 改动原因：C 函数封装 ring buffer，避免 XC 并行共享对象规则报错和 C/XC 指针 ABI 差异。 */
+        c_us_out <: ssrc_us_share_pop_word_blocking();
+    }
+}
+
+#endif

sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/ssrc/ssrc_us_share_buf.c

@@ -0,0 +1,43 @@
+#include "ssrc_us_share_buf.h"
+
+/* 改动原因：该 buffer 只在 tile[1] 内被 us_rec_core/us_rec_output_core 使用。
+ * us_stereo.S 通过 tail 地址写入；输出任务通过 head 读取并用普通 chan 发回 tile[0]。 */
+static int32_t ssrc_us_rb[SSRC_US_RB_WORDS];
+static int32_t ssrc_us_head;
+/* 改动原因：us_stereo.S 通过指针写 ssrc_us_tail；编译器无法感知，须加 volatile
+ * 否则 ssrc_us_share_pop_word_blocking 的 while 循环永远读缓存旧值，导致死锁 */
+volatile int32_t ssrc_us_tail;
+
+void ssrc_us_share_reset(void)
+{
+    ssrc_us_head = 0;
+    ssrc_us_tail = 0;
+}
+
+uint32_t ssrc_us_share_get_buffer_addr(void)
+{
+    return (uint32_t)ssrc_us_rb;
+}
+
+uint32_t ssrc_us_share_get_tail_addr(void)
+{
+    return (uint32_t)&ssrc_us_tail;
+}
+
+int32_t ssrc_us_share_pop_word_blocking(void)
+{
+    int32_t sample;
+
+    while (ssrc_us_head == ssrc_us_tail) {
+        /* 改动原因：输出任务等待 us_stereo.S 生产数据；只阻塞发送任务，不阻塞采样率转换任务。 */
+        asm volatile("nop");
+    }
+
+    sample = ssrc_us_rb[ssrc_us_head];
+    ssrc_us_head++;
+    if (ssrc_us_head >= (SSRC_US_RB_WORDS - 32)) {
+        /* 改动原因：us_stereo.S 使用的 ring size 为 NUM_USB_CHAN_OUT*32*5，不包含尾部padding。 */
+        ssrc_us_head = 0;
+    }
+    return sample;
+}

sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/ssrc/ssrc_us_share_buf.h

@@ -0,0 +1,15 @@
+#ifndef _SSRC_US_SHARE_BUF_H_
+#define _SSRC_US_SHARE_BUF_H_
+
+#include <stdint.h>
+
+/* 改动原因：us_stereo.S 持续写 ring buffer；XC 并行任务不能直接共享全局数组，
+ * 因此用 C 函数封装 ring buffer，作为 tile[1] 内 us_rec_core → us_rec_output_core 的边界。 */
+#define SSRC_US_RB_WORDS        (2 * 32 * 5 + 32)
+
+void ssrc_us_share_reset(void);
+uint32_t ssrc_us_share_get_buffer_addr(void);
+uint32_t ssrc_us_share_get_tail_addr(void);
+int32_t ssrc_us_share_pop_word_blocking(void);
+
+#endif

sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/ssrc/us_stereo.S

@@ -0,0 +1,182 @@
+#define FUNCTION_NAME us_stereo
+/*
+void us_stereo(
+    int32_t * coefs,
+    int32_t * l_history,
+    int32_t * r_history,
+    streaming chanend c_in,
+    int32_t history_offset,     +1
+    int32_t * ring_buffer,      +2
+    int32_t * tail,             +3
+    int32_t ring_buffer_size,   +4
+    int32_t num_phase,          +5  (number of polyphase filter)
+    int32_t phase_size,         +6  (in vpu mac size (8word))
+    int32_t final_shr);         +7
+*/
+
+    #define NSTACKWORDS 32
+
+    .cc_top FUNCTION_NAME.function
+    .type   FUNCTION_NAME,@function
+
+    .issue_mode dual
+    .align 4
+
+#define BYTES_PER_WORD 4
+#define CHANNELS 2
+#define WORDS_PER_VECTOR 8
+#define BYTES_PER_VECTOR (WORDS_PER_VECTOR*BYTES_PER_WORD)
+
+#define ZERO    0x0
+#define ONE     0x40000000
+filter_l_1010:
+    .word ZERO, ZERO, ZERO, ZERO, ONE, ZERO, ONE, ZERO
+filter_l_0101:
+    .word ZERO, ZERO, ZERO, ZERO, ZERO, ONE, ZERO, ONE
+filter_r_1010:
+    .word ONE, ZERO, ONE, ZERO, ZERO, ZERO, ZERO, ZERO
+filter_r_0101:
+    .word ZERO, ONE, ZERO, ONE, ZERO, ZERO, ZERO, ZERO
+zeros:
+    .word 0, 0, 0, 0, 0, 0, 0, 0
+    .align 16
+    .globl FUNCTION_NAME
+.globl FUNCTION_NAME.nstackwords
+.set   FUNCTION_NAME.nstackwords, NSTACKWORDS
+FUNCTION_NAME:
+    { dualentsp NSTACKWORDS     ; nop               }
+    
+    stw r4, sp[NSTACKWORDS-1]
+    stw r5, sp[NSTACKWORDS-2]
+    stw r6, sp[NSTACKWORDS-3]
+    stw r7, sp[NSTACKWORDS-4]
+    stw r8, sp[NSTACKWORDS-5]
+    stw r9, sp[NSTACKWORDS-6]
+    stw r10, sp[NSTACKWORDS-7]      // sp[25]
+
+    // store coefs to stack[0]
+    stw r0, sp[24]
+    // store l,r history to stack[1,2]
+    std r2, r1, sp[0]   // sp[1] sp[0]
+    // store the final_shr for the VLSAT to stack[2-9]
+    ldw r0, sp[NSTACKWORDS+7]
+    std r0, r0, sp[1]   // sp[2] sp[3]
+    std r0, r0, sp[2]   // sp[4] sp[5]
+    std r0, r0, sp[3]   // sp[6] sp[7]
+    std r0, r0, sp[4]   // sp[8] sp[9]
+    // store start of ring buffer and tail to stack[10,11]
+    ldw r0, sp[NSTACKWORDS+2]
+    ldw r1, sp[NSTACKWORDS+3]
+    std r0, r1, sp[5]   // sp[11] sp[10]
+    // store sample history offset to stack[12]
+    ldw r0, sp[NSTACKWORDS+1]
+    stw r0, sp[12]
+    // store c_in to stack[13]
+    stw r3, sp[13]
+    // store num_phase and phase size to stack[14,15]
+    ldw r0, sp[NSTACKWORDS+5]
+    ldw r1, sp[NSTACKWORDS+6]
+    stw r0, sp[14]
+    stw r1, sp[15]
+
+    // temp vstr store at stack[16-23]
+
+    // program start
+    ldc r9, BYTES_PER_VECTOR        // r9: BYTES_PER_WORD
+    ldc r10, BYTES_PER_VECTOR*3     // r10: coefs rewind
+    ldd r7, r8, sp[5]              // r7: ring_buffer ptr, r8: tail ptr
+
+outer_loop:
+    ldw r4, sp[12]
+    ldw r3, sp[13]
+    { testct r11, res[r3]       ; ldw r0, sp[0]                 }   // r0: &l_history[0]
+    bt r11, exit
+    { in r11, res[r3]           ; add r2, r0, r4                }   // r2: &l_history[offset]
+    { in r11, res[r3]           ; stw r11, r2[0]                }
+    { ldw r2, sp[1]             ; add r1, r0, BYTES_PER_WORD    }   // r2: &r_history[0], r1: &l_history[4]
+    { add r4, r2, r4            ; add r3, r2, BYTES_PER_WORD    }   // r4: &r_history[offset], r3: &r_history[4]
+    { stw r11, r4[0]            ; nop                           }
+    { ldw r4, sp[24]             ; add r11, r2, 0               }   // r4: &coeff[0], r11: r2
+    ldw r6, sp[15]                                                  // r6: phase size
+    { sub r6, r6, 2             ; ldw r5, sp[14]                }   // burst 2, r5: num of phase
+    { vclrdr                    ; nop                           }
+    bu mac_loop
+phase_loop:
+    { nop                       ; ldaw r11, sp[2]               }
+    { vlsat r11[0]              ; ldaw r11, sp[16]              }   // turn all accumulators into 32 bits
+    { vstr r11[0]               ; nop                           }   // store accumulators result into stack[16-23]
+    { vldc r11[0]               ; nop                           }   // load the accumulators result into VC from stack
+    { vclrdr                    ; ldap r11, filter_r_1010       }   // clear vR vD
+    { vlmaccr r11[0]            ; ldap r11, filter_l_1010       }   // r us t1, vD:vR -> {r_us_t1, 0, 0, 0}
+    { vlmaccr r11[0]            ; ldap r11, filter_r_0101       }   // l us t1, vD:vR -> {l_us_t1, r_us_t1, 0, 0}
+    { vlmaccr r11[0]            ; ldap r11, filter_l_0101       }   // r us t0, vD:vR -> {r_us_t0, l_us_t1, r_us_t1, 0}
+    { vlmaccr r11[0]            ; ldap r11, zeros               }   // l us t0, vD:vR -> {l_us_t0, r_us_t0, l_us_t1, r_us_t1}, r11: all zeros for vlsat
+    { vlsat r11[0]              ; ldc r11, BYTES_PER_WORD*4     }   // sat(vD:vR), r11: BYTES_PER_WORD*4 = 4 sample size
+    { vstr r7[0]                ; add r7, r7, r11               }   // save result to ring buffer, update ring buffer ptr
+    { ldw r11, r8[0]            ; nop                           }   // r11: tail value
+    { ldw r6, sp[NSTACKWORDS+4] ; add r11, r11, 4               }   // r6: ring_buffer size, r11: tail + 4
+    { stw r11, r8[0]            ; eq r11, r11, r6               }   // update tail ptr, r11: check if tail at ring buffer end
+    { bf r11, prepare_mac_loop  ; nop                           }   // if tail not at buffer end, prepare mac loop
+    { ldw r7, sp[11]            ; ldc r11, 0                    }   // r7: ring buffer start, r11: 0
+    { stw r11, r8[0]            ; nop                           }   // update tail ptr to 0
+prepare_mac_loop:
+    { ldw r6, sp[15]            ; sub r5, r5, 2                 }   // r6: phase size, r5: r5-2 processed two polyphase filter
+    { bf r5, outer_loop         ; sub r6, r6, 2                 }   // burst 2
+    ldd r1, r0, sp[0]                                               // r0: &l_history[0], r2: &r_history[0]
+    { vclrdr                    ; nop                           }
+    bu mac_loop_no_move
+mac_loop:
+    // swap r11 for channel
+    { add r2, r11, 0    ; add r11, r0, 0    }   // r11: r0
+    // left channel
+    { vldc r1[0]        ; add r1, r1, r9    }
+    { vstc r11[0]       ; add r11, r11, r9  }
+    { vlmaccr r4[0]     ; add r4, r4, r9    }
+    { vlmaccr r4[0]     ; add r4, r4, r9    }
+    { vldc r1[0]        ; add r1, r1, r9    }
+    { vstc r11[0]       ; add r11, r11, r9  }
+    { vlmaccr r4[0]     ; add r4, r4, r9    }
+    { vlmaccr r4[0]     ; sub r4, r4, r10   }   // rewind
+    // swap r11 for channel
+    { add r0, r11, 0    ; add r11, r2, 0    }
+    // right channel
+    { vldc r3[0]        ; add r3, r3, r9    }
+    { vstc r11[0]       ; add r11, r11, r9  }
+    { vlmaccr r4[0]     ; add r4, r4, r9    }
+    { vlmaccr r4[0]     ; add r4, r4, r9    }
+    { vldc r3[0]        ; add r3, r3, r9    }
+    { vstc r11[0]       ; add r11, r11, r9  }
+    { vlmaccr r4[0]     ; add r4, r4, r9    }
+    { vlmaccr r4[0]     ; add r4, r4, r9    }
+    { bt r6, mac_loop   ; sub r6, r6, 2     }   // vD:vR -> {right_f1, right_f0, left_f1, left_f0}
+    bu phase_loop
+mac_loop_no_move:
+    // left channel
+    { vldc r0[0]                ; add r0, r0, r9    }
+    { vlmaccr r4[0]             ; add r4, r4, r9    }
+    { vlmaccr r4[0]             ; add r4, r4, r9    }
+    { vldc r0[0]                ; add r0, r0, r9    }
+    { vlmaccr r4[0]             ; add r4, r4, r9    }
+    { vlmaccr r4[0]             ; sub r4, r4, r10   }   // rewind
+    // right channel
+    { vldc r1[0]                ; add r1, r1, r9    }
+    { vlmaccr r4[0]             ; add r4, r4, r9    }
+    { vlmaccr r4[0]             ; add r4, r4, r9    }
+    { vldc r1[0]                ; add r1, r1, r9    }
+    { vlmaccr r4[0]             ; add r4, r4, r9    }
+    { vlmaccr r4[0]             ; add r4, r4, r9    }
+    { bt r6, mac_loop_no_move   ; sub r6, r6, 2     }
+    bu phase_loop
+
+exit:
+    {inct r0, res[r3]; nop}
+    ldw r4, sp[NSTACKWORDS-1]
+    ldw r5, sp[NSTACKWORDS-2]
+    ldw r6, sp[NSTACKWORDS-3]
+    ldw r7, sp[NSTACKWORDS-4]
+    ldw r8, sp[NSTACKWORDS-5]
+    ldw r9, sp[NSTACKWORDS-6]
+    ldw r10, sp[NSTACKWORDS-7]
+    retsp NSTACKWORDS
+    
+    .cc_bottom FUNCTION_NAME.function