Fix binary protocol with one serial port (#13270)

- The `sdcard.transfer_port` variable is Marlin's internal serial port index, not the physical serial port number.
- Added packet number to "ok" response so hosts don't need to wait for the ACK.
- Renamed feature to `BINARY_FILE_TRANSFER`, as the speed up is only consequential to the ability to transfer binaries over serial.

Marlin/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/default/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/3DFabXYZ/Migbot/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/AlephObjects/TAZ4/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Anet/A2/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Anet/A2plus/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Anet/A6/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Anet/A8/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/AnyCubic/i3/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/ArmEd/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/BIBO/TouchX/cyclops/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/BIBO/TouchX/default/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/BQ/Hephestos/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/BQ/Hephestos_2/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/BQ/WITBOX/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Cartesio/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Creality/CR-10/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Creality/CR-10S/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Creality/CR-10_5S/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Creality/CR-10mini/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Creality/CR-8/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Creality/Ender-2/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Creality/Ender-3/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Creality/Ender-4/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Einstart-S/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Felix/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/FlashForge/CreatorPro/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/FolgerTech/i3-2020/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Formbot/Raptor/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Formbot/T_Rex_2+/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Formbot/T_Rex_3/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Geeetech/A10M/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Geeetech/A20M/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Geeetech/MeCreator2/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Geeetech/Prusa i3 Pro C/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Geeetech/Prusa i3 Pro W/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Infitary/i3-M508/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/JGAurora/A5/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/MakerParts/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Malyan/M150/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Malyan/M200/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Micromake/C1/enhanced/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Mks/Robin/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Mks/Sbase/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/RapideLite/RL200/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/RigidBot/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/SCARA/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Sanguinololu/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/TheBorg/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/TinyBoy2/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Tronxy/X3A/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/UltiMachine/Archim1/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/UltiMachine/Archim2/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/VORONDesign/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Velleman/K8200/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Velleman/K8400/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/WASP/PowerWASP/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/Wanhao/Duplicator 6/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/delta/Anycubic/Kossel/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/delta/FLSUN/auto_calibrate/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/delta/FLSUN/kossel/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/delta/FLSUN/kossel_mini/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/delta/Geeetech/Rostock 301/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/delta/MKS/SBASE/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/delta/Tevo Little Monster/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/delta/generic/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/delta/kossel_mini/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/delta/kossel_xl/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/gCreate/gMax1.5+/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/makibox/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/tvrrug/Round2/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/config/examples/wt150/Configuration_adv.h

   #endif
 
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
-  //#define FAST_FILE_TRANSFER
+  //#define BINARY_FILE_TRANSFER
 
 #endif // SDSUPPORT
 

Marlin/src/gcode/host/M115.cpp

       #endif
     );
 
+    // BINARY_FILE_TRANSFER (M28 B1)
+    cap_line(PSTR("BINARY_FILE_TRANSFER")
+      #if ENABLED(BINARY_FILE_TRANSFER)
+        , true
+      #endif
+    );
+
     // EEPROM (M500, M501)
     cap_line(PSTR("EEPROM")
       #if ENABLED(EEPROM_SETTINGS)

Marlin/src/gcode/queue.cpp

   serial_count[port] = 0;
 }
 
-#if ENABLED(FAST_FILE_TRANSFER)
+#if ENABLED(BINARY_FILE_TRANSFER)
 
   inline bool serial_data_available(const uint8_t index) {
     switch (index) {
               stream_state = StreamState::PACKET_RESET;
               bytes_received = 0;
               time_stream_start = millis();
-              SERIAL_ECHO("echo: Datastream initialized (");
-              SERIAL_ECHO(stream_header.filesize);
-              SERIAL_ECHOLN("Bytes expected)");
-              SERIAL_ECHO("so"); // confirm active stream and the maximum block size supported
-              SERIAL_CHAR(static_cast<uint8_t>(buffer_size & 0xFF));
-              SERIAL_CHAR(static_cast<uint8_t>((buffer_size >> 8) & 0xFF));
-              SERIAL_CHAR('\n');
+              SERIAL_ECHOPAIR("echo: Datastream initialized (", stream_header.filesize);
+              SERIAL_ECHOLNPGM(" bytes expected)");
+              SERIAL_ECHOLNPAIR("so", buffer_size); // confirm active stream and the maximum block size supported
             }
             else {
-              SERIAL_ECHOLN("echo: Datastream initialization error (invalid token)");
+              SERIAL_ECHO_MSG("Datastream init error (invalid token)");
               stream_state = StreamState::STREAM_FAILED;
             }
             buffer_next_index = 0;
                 stream_state = StreamState::PACKET_DATA;
               }
               else {
-                SERIAL_ECHO("echo: Datastream packet out of order");
+                SERIAL_ECHO_MSG("Datastream packet out of order");
                 stream_state = StreamState::PACKET_FLUSHRX;
               }
             }
           case StreamState::PACKET_DATA:
             if (!stream_read(data)) break;
 
-            if (buffer_next_index < buffer_size) {
+            if (buffer_next_index < buffer_size)
               buffer[buffer_next_index] = data;
-            }
             else {
-              SERIAL_ECHO("echo: Datastream packet data buffer overrun");
+              SERIAL_ECHO_MSG("Datastream packet data buffer overrun");
               stream_state = StreamState::STREAM_FAILED;
               break;
             }
 
             packet.checksum = checksum(packet.checksum, data);
-            packet.bytes_received ++;
-            buffer_next_index ++;
+            packet.bytes_received++;
+            buffer_next_index++;
 
-            if (packet.bytes_received == packet.header.size) {
+            if (packet.bytes_received == packet.header.size)
               stream_state = StreamState::PACKET_VALIDATE;
-            }
+
             break;
           case StreamState::PACKET_VALIDATE:
             if (packet.header.checksum == packet.checksum) {
               packet_retries = 0;
-              packets_received ++;
+              packets_received++;
               bytes_received += packet.header.size;
 
-              if (packet.header.id == 0) {                 // id 0 is always the stream descriptor
+              if (packet.header.id == 0)                   // id 0 is always the stream descriptor
                 stream_state = StreamState::STREAM_HEADER; // defer packet confirmation to STREAM_HEADER state
-              }
               else {
                 if (bytes_received < stream_header.filesize) {
-                  stream_state = StreamState::PACKET_RESET;    // reset and receive next packet
-                  SERIAL_ECHOLN("ok");   // transmit confirm packet received and valid token
+                  stream_state = StreamState::PACKET_RESET; // reset and receive next packet
+                  SERIAL_ECHOLNPGM("ok");                   // transmit confirm packet received and valid token
+                  SERIAL_ECHOLN(packet.header.id);
                 }
-                else  {
+                else
                   stream_state = StreamState::STREAM_COMPLETE; // no more data required
-                }
+
                 if (card.write(buffer, buffer_next_index) < 0) {
                   stream_state = StreamState::STREAM_FAILED;
-                  SERIAL_ECHO("echo: IO ERROR");
+                  SERIAL_ECHO_MSG("SDCard IO Error");
                   break;
                 };
               }
             }
             else {
-              SERIAL_ECHO("echo: Block(");
-              SERIAL_ECHO(packet.header.id);
-              SERIAL_ECHOLN(") Corrupt");
+              SERIAL_ECHO_START();
+              SERIAL_ECHOPAIR("Block(", packet.header.id);
+              SERIAL_ECHOLNPGM(") Corrupt");
               stream_state = StreamState::PACKET_FLUSHRX;
             }
             break;
           case StreamState::PACKET_RESEND:
             if (packet_retries < MAX_RETRIES) {
-              packet_retries ++;
+              packet_retries++;
               stream_state = StreamState::PACKET_RESET;
-              SERIAL_ECHO("echo: Resend request ");
-              SERIAL_ECHOLN(packet_retries);
-              SERIAL_ECHOLN("rs"); // transmit resend packet token
+              SERIAL_ECHO_START();
+              SERIAL_ECHOLNPAIR("Resend request ", int(packet_retries));
+              SERIAL_ECHOLNPAIR("rs", packet.header.id); // transmit resend packet token
             }
             else {
               stream_state = StreamState::STREAM_FAILED;
             packet.timeout = millis() + STREAM_MAX_WAIT;
             break;
           case StreamState::PACKET_TIMEOUT:
-            SERIAL_ECHOLN("echo: Datastream timeout");
+            SERIAL_ECHO_START();
+            SERIAL_ECHOLNPGM("Datastream timeout");
             stream_state = StreamState::PACKET_RESEND;
             break;
           case StreamState::STREAM_COMPLETE:
             stream_state = StreamState::STREAM_RESET;
             card.flag.binary_mode = false;
-            card.closefile();
-            SERIAL_ECHO("echo: ");
+            SERIAL_ECHO_START();
             SERIAL_ECHO(card.filename);
-            SERIAL_ECHO(" transfer completed @ ");
-            SERIAL_ECHO(((bytes_received / (millis() - time_stream_start) * 1000) / 1024 ));
-            SERIAL_ECHOLN("KiB/s");
-            SERIAL_ECHOLN("sc"); // transmit stream complete token
+            SERIAL_ECHOPAIR(" transfer completed @ ", ((bytes_received / (millis() - time_stream_start) * 1000) / 1024));
+            SERIAL_ECHOLNPGM("KiB/s");
+            SERIAL_ECHOLNPGM("sc"); // transmit stream complete token
+            card.closefile();
             return;
           case StreamState::STREAM_FAILED:
             stream_state = StreamState::STREAM_RESET;
             card.flag.binary_mode = false;
             card.closefile();
             card.removeFile(card.filename);
-            SERIAL_ECHOLN("echo: File transfer failed");
-            SERIAL_ECHOLN("sf"); // transmit stream failed token
+            SERIAL_ECHO_START();
+            SERIAL_ECHOLNPGM("File transfer failed");
+            SERIAL_ECHOLNPGM("sf"); // transmit stream failed token
             return;
         }
       }
 
   } binaryStream{};
 
-#endif // FAST_FILE_TRANSFER
+#endif // BINARY_FILE_TRANSFER
 
 FORCE_INLINE bool is_M29(const char * const cmd) {
   return cmd[0] == 'M' && cmd[1] == '2' && cmd[2] == '9' && !WITHIN(cmd[3], '0', '9');
               #endif
             ;
 
-  #if ENABLED(FAST_FILE_TRANSFER)
+  #if ENABLED(BINARY_FILE_TRANSFER)
     if (card.flag.saving && card.flag.binary_mode) {
       /**
        * For binary stream file transfer, use serial_line_buffer as the working

Marlin/src/gcode/sdcard/M20-M30_M32-M34_M524_M928.cpp

  */
 void GcodeSuite::M28() {
 
-  #if ENABLED(FAST_FILE_TRANSFER)
+  #if ENABLED(BINARY_FILE_TRANSFER)
 
     bool binary_mode = false;
     char *p = parser.string_arg;

Marlin/src/sd/cardreader.cpp

 char CardReader::filename[FILENAME_LENGTH], CardReader::longFilename[LONG_FILENAME_LENGTH];
 int8_t CardReader::autostart_index;
 
-#if ENABLED(FAST_FILE_TRANSFER) && NUM_SERIAL > 1
+#if ENABLED(BINARY_FILE_TRANSFER) && NUM_SERIAL > 1
   int8_t CardReader::transfer_port;
 #endif
 

Marlin/src/sd/cardreader.h

        detected:1,
        filenameIsDir:1,
        abort_sd_printing:1
-       #if ENABLED(FAST_FILE_TRANSFER)
+       #if ENABLED(BINARY_FILE_TRANSFER)
          , binary_mode:1
        #endif
     ;
   static char filename[FILENAME_LENGTH], longFilename[LONG_FILENAME_LENGTH];
   static int8_t autostart_index;
 
-  #if ENABLED(FAST_FILE_TRANSFER)
+  #if ENABLED(BINARY_FILE_TRANSFER)
     #if NUM_SERIAL > 1
       static int8_t transfer_port;
     #else
-      static constexpr int8_t transfer_port = SERIAL_PORT;
+      static constexpr int8_t transfer_port = 0;
     #endif
   #endif
 

buildroot/share/tests/megaatmega2560-tests

            AUTO_BED_LEVELING_LINEAR Z_MIN_PROBE_REPEATABILITY_TEST DEBUG_LEVELING_FEATURE \
            SKEW_CORRECTION SKEW_CORRECTION_FOR_Z SKEW_CORRECTION_GCODE \
            FWRETRACT ARC_P_CIRCLES ADVANCED_PAUSE_FEATURE CNC_WORKSPACE_PLANES CNC_COORDINATE_SYSTEMS \
-           POWER_LOSS_RECOVERY POWER_LOSS_PIN POWER_LOSS_STATE FAST_FILE_TRANSFER \
+           POWER_LOSS_RECOVERY POWER_LOSS_PIN POWER_LOSS_STATE BINARY_FILE_TRANSFER \
            LCD_PROGRESS_BAR LCD_PROGRESS_BAR_TEST PINS_DEBUGGING \
            MAX7219_DEBUG LED_CONTROL_MENU CASE_LIGHT_ENABLE CASE_LIGHT_USE_NEOPIXEL CODEPENDENT_XY_HOMING BACKLASH_COMPENSATION BACKLASH_GCODE
 opt_set FANMUX0_PIN 53