Fixed some bugs when receiving large data.

common/system/system.c

@@ -13,3 +13,7 @@ void system_delay(uint32_t msec) {
 void system_process() {
 	ll_system_process();
 }
+
+void system_toggle_led() {
+	ll_system_toggle_led();
+}

common/system/system.h

@@ -4,3 +4,4 @@
 bool system_init();
 void system_delay(uint32_t msec);
 void system_process();
+void system_toggle_led();