diff --git a/.gitmodules b/.gitmodules
index 921aec9..e0a5390 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,9 +1,6 @@
 [submodule "SDK"]
 	path = SDK
 	url = https://git.minori.work/Embedded_SDK/MCUXpresso_LPC55S69.git
-[submodule "lib/esp_hosted/hosted"]
-	path = lib/esp_hosted/hosted
-	url = https://github.com/espressif/esp-hosted.git
 [submodule "lib/freertos"]
 	path = lib/freertos
 	url = https://github.com/FreeRTOS/FreeRTOS-Kernel.git
diff --git a/lib/esp_hosted/hosted b/lib/esp_hosted/hosted
deleted file mode 160000
index 3583fb7..0000000
--- a/lib/esp_hosted/hosted
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 3583fb7519f4ea3487949d999a8312060d38721d
diff --git a/lib/esp_hosted/nxp/include/platform_wrapper.h b/lib/esp_hosted/nxp/include/platform_wrapper.h
index 8ee7895..11b7807 100644
--- a/lib/esp_hosted/nxp/include/platform_wrapper.h
+++ b/lib/esp_hosted/nxp/include/platform_wrapper.h
@@ -28,4 +28,12 @@ int   hosted_destroy_semaphore(void *semaphore_handle);
 void *hosted_timer_start(int duration, int type, void (*timeout_handler)(void const *), void *arg);
 int   hosted_timer_stop(void *timer_handle);
 
+unsigned int msleep(unsigned int mseconds);
+unsigned int sleep(unsigned int seconds);
+
+void    *serial_drv_open(const char *transport);
+int      serial_drv_write(void *handle, uint8_t *buf, int in_count, int *out_count);
+uint8_t *serial_drv_read(void *handle, uint32_t *out_nbyte);
+int      serial_drv_close(void *handle);
+
 #endif /* ESP_HOSTED_NXP_PLATFORM_WRAPPER_H */