diff --git a/TactilityC/Source/tt_init.cpp b/TactilityC/Source/tt_init.cpp
index 695702b2..fb377118 100644
--- a/TactilityC/Source/tt_init.cpp
+++ b/TactilityC/Source/tt_init.cpp
@@ -422,7 +422,12 @@ const esp_elfsym main_symbols[] {
     ESP_ELFSYM_EXPORT(ledc_set_freq),
     ESP_ELFSYM_EXPORT(ledc_channel_config),
     ESP_ELFSYM_EXPORT(ledc_set_duty),
+    ESP_ELFSYM_EXPORT(ledc_set_fade),
+    ESP_ELFSYM_EXPORT(ledc_set_pin),
     ESP_ELFSYM_EXPORT(ledc_timer_config),
+    ESP_ELFSYM_EXPORT(ledc_timer_pause),
+    ESP_ELFSYM_EXPORT(ledc_timer_resume),
+    ESP_ELFSYM_EXPORT(ledc_timer_rst),
     // delimiter
     ESP_ELFSYM_END
 };
diff --git a/TactilityKernel/source/kernel_symbols.c b/TactilityKernel/source/kernel_symbols.c
index 09427124..829ac5c5 100644
--- a/TactilityKernel/source/kernel_symbols.c
+++ b/TactilityKernel/source/kernel_symbols.c
@@ -1,17 +1,17 @@
+#include <tactility/concurrent/dispatcher.h>
+#include <tactility/concurrent/event_group.h>
+#include <tactility/concurrent/thread.h>
+#include <tactility/concurrent/timer.h>
 #include <tactility/device.h>
 #include <tactility/driver.h>
 #include <tactility/drivers/gpio_controller.h>
+#include <tactility/drivers/file_system.h>
 #include <tactility/drivers/i2c_controller.h>
 #include <tactility/drivers/i2s_controller.h>
 #include <tactility/drivers/root.h>
 #include <tactility/drivers/spi_controller.h>
 #include <tactility/drivers/uart_controller.h>
-#include <tactility/concurrent/dispatcher.h>
-#include <tactility/concurrent/event_group.h>
-#include <tactility/concurrent/thread.h>
-#include <tactility/concurrent/timer.h>
 #include <tactility/error.h>
-#include <tactility/log.h>
 #include <tactility/module.h>
 
 /**
@@ -58,6 +58,11 @@ const struct ModuleSymbol KERNEL_SYMBOLS[] = {
     DEFINE_MODULE_SYMBOL(driver_is_compatible),
     DEFINE_MODULE_SYMBOL(driver_find_compatible),
     DEFINE_MODULE_SYMBOL(driver_get_device_type),
+    // file system
+    DEFINE_MODULE_SYMBOL(file_system_mount),
+    DEFINE_MODULE_SYMBOL(file_system_unmount),
+    DEFINE_MODULE_SYMBOL(file_system_is_mounted),
+    DEFINE_MODULE_SYMBOL(file_system_get_mount_path),
     // drivers/gpio_controller
     DEFINE_MODULE_SYMBOL(gpio_descriptor_acquire),
     DEFINE_MODULE_SYMBOL(gpio_descriptor_release),