fixing octoprint connection issues

Author: inib

Marlin/Configuration.h

@@ -128,7 +128,8 @@
  *
  * :[2400, 9600, 19200, 38400, 57600, 115200, 250000, 500000, 1000000]
  */
-#define BAUDRATE 250000
+// @fixing octoprint connection issues - I guess RPi may have issues with higher baud rates.
+#define BAUDRATE 115200
 
 // Enable the Bluetooth serial interface on AT90USB devices
 //#define BLUETOOTH

Marlin/Configuration_adv.h

@@ -1544,13 +1544,15 @@
 // For debug-echo: 128 bytes for the optimal speed.
 // Other output doesn't need to be that speedy.
 // :[0, 2, 4, 8, 16, 32, 64, 128, 256]
-#define TX_BUFFER_SIZE 0
+// @fixing octoprint connection issues - probably overkill
+#define TX_BUFFER_SIZE 32
 
 // Host Receive Buffer Size
 // Without XON/XOFF flow control (see SERIAL_XON_XOFF below) 32 bytes should be enough.
 // To use flow control, set this buffer size to at least 1024 bytes.
 // :[0, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048]
-//#define RX_BUFFER_SIZE 1024
+// @fixing octoprint connection issues - probably overkill
+#define RX_BUFFER_SIZE 1024
 
 #if RX_BUFFER_SIZE >= 1024
   // Enable to have the controller send XON/XOFF control characters to