Audio System + Drivers (#562)

Drivers/dummy-i2s-amp-module/CMakeLists.txt

@@ -0,0 +1,18 @@
+cmake_minimum_required(VERSION 3.20)
+
+include("${CMAKE_CURRENT_LIST_DIR}/../../Buildscripts/module.cmake")
+
+file(GLOB_RECURSE SOURCE_FILES "source/*.c*")
+
+tactility_add_module(dummy-i2s-amp-module
+    SRCS ${SOURCE_FILES}
+    INCLUDE_DIRS include/
+    REQUIRES TactilityKernel audio-codec-module esp_codec_dev
+)
+
+# audio_codec_sw_vol.h lives at the esp_codec_dev component root, which its own
+# COMPONENT_ADD_INCLUDEDIRS (include interface device/include) does not expose.
+if (DEFINED ENV{ESP_IDF_VERSION})
+    idf_component_get_property(esp_codec_dev_dir espressif__esp_codec_dev COMPONENT_DIR)
+    target_include_directories(${COMPONENT_LIB} PRIVATE "${esp_codec_dev_dir}")
+endif()