update protocol

transmit_disfection_protocol.hpp

@@ -254,6 +254,7 @@ typedef struct {
 typedef struct {
   uint32_t total_heap_size;
   uint32_t free_heap_size;
+  uint32_t free_sys_heap_size;
   uint16_t taskNum;
   uint16_t sysHasRun;
 } ack_sysinfo_t;