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Fix serial port midi disconnet bug #66

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Fix serial port midi disconnet bug #66

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16 changes: 13 additions & 3 deletions samplerbox.py
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Original file line number Diff line number Diff line change
Expand Up @@ -384,13 +384,23 @@ def display(s):

if USE_SERIALPORT_MIDI:
import serial
ser = serial.Serial(SERIALPORT_PORT, baudrate=SERIALPORT_BAUDRATE)
def MidiSerialCallback():
message = [0, 0, 0]
ser = None
while True:
if ser is None:
try:
ser = serial.Serial(SERIALPORT_PORT, baudrate=SERIALPORT_BAUDRATE)
except serial.serialutil.SerialException:
continue
i = 0
while i < 3:
data = ord(ser.read(1)) # read a byte
while i < 3 and ser is not None:
try:
data = ord(ser.read(1)) # read a byte
except serial.serialutil.SerialException:
ser = None
message = [0, 0, 0]
break
if data >> 7 != 0:
i = 0 # status byte! this is the beginning of a midi message: http://www.midi.org/techspecs/midimessages.php
message[i] = data
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