120 lines
2.3 KiB
Ruby
120 lines
2.3 KiB
Ruby
class String
|
|
def to_bytes
|
|
arr = []
|
|
each_byte{|x| arr << x}
|
|
arr
|
|
end
|
|
end
|
|
|
|
class Array
|
|
def to_hex
|
|
map{|x| "%2.0x" % x}
|
|
end
|
|
|
|
alias as_hex to_hex
|
|
end
|
|
|
|
class String
|
|
def to_b
|
|
to_i != 0 || %w{true t yes y}.include?( self.downcase )
|
|
end
|
|
end
|
|
|
|
class Fixnum
|
|
def to_hex
|
|
"%02x" % self
|
|
end
|
|
end
|
|
|
|
class Mackie
|
|
attr_accessor :file
|
|
|
|
def initialize( file )
|
|
@file = file
|
|
end
|
|
|
|
# send and receive a sysex message
|
|
# after wrapping in the header and the eox byte
|
|
def sysex( msg )
|
|
puts "Mackie write: #{msg.unpack('C*').to_hex.inspect}"
|
|
write_sysex( msg )
|
|
response = read_sysex
|
|
puts "Mackie response: #{response.to_hex.inspect}"
|
|
response[5..-1]
|
|
end
|
|
|
|
# returns an array of bytes
|
|
def read_sysex
|
|
buf = []
|
|
while ( nc = @file.read( 1 ) )[0] != 0xf7
|
|
buf << nc[0]
|
|
end
|
|
buf
|
|
end
|
|
|
|
# send and flush a sysex message
|
|
# after wrapping in the header and the eox byte
|
|
def write_sysex( msg )
|
|
@file.write( hdrlc + msg + "\xf7" )
|
|
@file.flush
|
|
end
|
|
|
|
def write( msg )
|
|
@file.write msg
|
|
@file.flush
|
|
end
|
|
|
|
def translate_seven_segment( char )
|
|
case char
|
|
when 0x40..0x60
|
|
char - 0x40
|
|
when 0x21..0x3f
|
|
char
|
|
else
|
|
0x00
|
|
end
|
|
end
|
|
|
|
# display the msg (which can be only 2 characters)
|
|
# append the number of stops. Options are '..', '. ', '. ', ' '
|
|
def two_char( msg, stops = ' ' )
|
|
two = Array.new
|
|
two << translate_seven_segment( msg.upcase[0] )
|
|
two << translate_seven_segment( msg.upcase[1] )
|
|
|
|
two[0] += 0x40 if stops[0] == '.'[0]
|
|
two[1] += 0x40 if stops[1] == '.'[0]
|
|
|
|
midi_msg = [0xb0, 0x4a, two[1], 0x4b, two[0] ]
|
|
write midi_msg.pack( 'C*' )
|
|
end
|
|
|
|
# send and receive the device initialisation
|
|
def init
|
|
response = sysex( "\x00" )
|
|
|
|
# decode host connection query
|
|
status = response[0]
|
|
raise( "expected 01, got " + response.inspect ) if status != 1
|
|
|
|
serial = response[1..7]
|
|
challenge = response[8..11]
|
|
|
|
# send host connection reply
|
|
reply = "\x02" + serial.pack('C*') + challenge.pack('C*')
|
|
response = sysex reply
|
|
|
|
# decode host connection confirmation
|
|
status = response[0]
|
|
raise ( "expected 03, got " + response.inspect ) if status != 3
|
|
end
|
|
|
|
def hdrlc
|
|
"\xf0\x00\x00\x66\x10"
|
|
end
|
|
|
|
def hdrlcxt
|
|
"\xf0\x00\x00\x66\x11"
|
|
end
|
|
end
|