Change default usb_serial_baud_rate value to 38400

CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Update to libmt32emu v2.5.2.
 - Update to FluidSynth v2.2.2.
+- The default value for `usb_serial_baud_rate` is now 38400 to reflect the most common use case (connecting to a vintage PC with SoftMPU).
 
 ## [0.10.0] - 2021-06-26
 

include/config.def

@@ -46,7 +46,7 @@ END_SECTION
 BEGIN_SECTION(midi)
 CFG(gpio_baud_rate,		int,				MIDIGPIOBaudRate,			31250						)
 CFG(gpio_thru,			bool,				MIDIGPIOThru,				false						)
-CFG(usb_serial_baud_rate,	int,				MIDIUSBSerialBaudRate,			31250						)
+CFG(usb_serial_baud_rate,	int,				MIDIUSBSerialBaudRate,			38400						)
 END_SECTION
 
 BEGIN_SECTION(audio)

sdcard/mt32-pi.cfg

@@ -95,12 +95,13 @@ gpio_thru = off
 # Set the baud rate used for USB serial MIDI.
 #
 # The same considerations from the gpio_baud_rate setting above apply here.
+# The default value is a PC baud rate and matches SoftMPU's serial MIDI mode.
 #
 # The range of valid baud rates may vary depending on the chipset of your USB
 # serial device, so the range of values suggested below may actually be greater.
 #
-# Values: 9600-115200 (31250*)
-usb_serial_baud_rate = 31250
+# Values: 9600-115200 (38400*)
+usb_serial_baud_rate = 38400
 
 # -----------------------------------------------------------------------------
 # Audio options