existing FW file check to avoid redundant transmit

+ refactro dupliacte code

proto/firmware.proto

@@ -8,6 +8,8 @@ enum UsbPackageType {
   FIRMWAREPACKAGE = 3842;      // 0xF02
   FIRMWAREDONE = 3843;         // 0xF03
   FIRMWAREPACKAGEACK = 3844;   // 0xF04
+  FIRMWAREFILECHECK = 3845;     // 0xF05
+  FIRMWAREUPDATEDONE = 3846;   // 0xF06
   REQUEST_DEVICE_LIST = 1000;
   RESPONSE_DEVICE_LIST = 1001;
 }
@@ -20,6 +22,14 @@ message FirmwareStart {
   required uint32 crc_fw = 5;
 }
 
+message FirmwareFileCheck {
+  required string name = 1 [(nanopb).max_size = 32];
+  required uint32 size = 2;
+  required uint32 device_id = 3;
+  required bool   ready_for_data =4;
+  required uint32 crc_fw = 5;
+}
+
 message FirmwarePackage {
   required uint32 counter = 1;
   required uint32 crc_pac = 2;
@@ -41,6 +51,12 @@ message FirmwareDone {
 }
 
 
+message FirmwareUpdateDone {
+  required uint32 device_id = 3;
+}
+
+
+
 message RequestDeviceList {
   required uint32 msg =1;
 }