diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 3247450..255482f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,7 +1,7 @@
 variables:
   SW_KERNEL: "0"
   SW_MAJOR: "1"
-  SW_MINOR: "5"
+  SW_MINOR: "6"
 
 before_script:
   - "echo $CI_BUILD_ID"
diff --git a/source/firmware/kernel/interface/shell.h b/source/firmware/kernel/interface/shell.h
index c242e8d..1b176ee 100644
--- a/source/firmware/kernel/interface/shell.h
+++ b/source/firmware/kernel/interface/shell.h
@@ -19,5 +19,6 @@ struct command {
 
 int shell_init(const struct driver *shell_device);
 int shell_add_command(struct command *command);
+int shell_write(const char *buffer, unsigned int len);
 
 #endif /* SOURCE_FIRMWARE_KERNEL_INTERFACE_SHELL_H_ */
diff --git a/source/firmware/kernel/shell.c b/source/firmware/kernel/shell.c
index 835d31e..1a66456 100644
--- a/source/firmware/kernel/shell.c
+++ b/source/firmware/kernel/shell.c
@@ -96,3 +96,10 @@ int shell_add_command(struct command *command)
 	list_add(&shell_object.command_list, &command->item);
 	return 1;
 }
+
+int shell_write(const char *buffer, unsigned int len)
+{
+	if((NULL == buffer) || (NULL == shell_object.shell_device))
+		return -1;
+	return drv_write(shell_object.shell_device, buffer, len);
+}