diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..0aadfd0
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "aic_pico"]
+	path = firmware/modules/aic_pico
+	url = https://github.com/whowechina/aic_pico
diff --git a/firmware/CMakeLists.txt b/firmware/CMakeLists.txt
index b328053..9604ab1 100644
--- a/firmware/CMakeLists.txt
+++ b/firmware/CMakeLists.txt
@@ -3,9 +3,12 @@ cmake_minimum_required(VERSION 3.12)
 # Pull in SDK (must set be before project)
 include(pico_sdk_import.cmake)
 
-project(iidx_pico C CXX ASM)
+project(mai_pico C CXX ASM)
 set(CMAKE_C_STANDARD 11)
 
 pico_sdk_init()
 
+add_subdirectory(modules/aic_pico/firmware aic)
+include_directories(modules/aic_pico/firmware/include)
+
 add_subdirectory(src)
diff --git a/firmware/modules/aic_pico b/firmware/modules/aic_pico
new file mode 160000
index 0000000..b69e562
--- /dev/null
+++ b/firmware/modules/aic_pico
@@ -0,0 +1 @@
+Subproject commit b69e562e40aa8ec944c7d31f154a7701ecfec881
diff --git a/firmware/src/CMakeLists.txt b/firmware/src/CMakeLists.txt
index da7d95c..5ed911e 100644
--- a/firmware/src/CMakeLists.txt
+++ b/firmware/src/CMakeLists.txt
@@ -19,6 +19,7 @@ function(make_firmware board board_def)
                                ${LWIP_ROOT}/src/include)
     
     target_link_libraries(${board} PRIVATE
+        aic
         pico_multicore pico_stdlib hardware_pio hardware_pwm hardware_flash
         hardware_adc hardware_i2c hardware_watchdog pico_unique_id
         tinyusb_device tinyusb_board)