def reload_preset(num):
s = SyxEncoder()
s.start()
for magic in syx_ident_magic:
s.write(magic)
s.start_packet()
s.crc_init()
s.chunk_init()
# preamble
s.encode_crc(0x00)
s.encode_crc(0x02)
# 0x1110 = firmware, 0x2220 = preset
# 30xx = load preset xx
s.encode_crc(0x30)
s.encode_crc(0x00 + num)
s.encode_crc_int()
s.flush()
s.stop()
return ''.join(struct.pack("B", x) for x in s._buf)
def json2syx(preset, num):
""" Encode json-format preset to SysEx dump for preset number 'num'.
"""
rotaries = structs.build_rotaries()
longsliders = structs.build_longsliders()
hsliders = structs.build_hsliders()
vsliders = structs.build_vsliders()
#
# Preamble
#
data = SyxEncoder()
data.start()
for magic in syx_ident_magic:
data.write(magic)
# pad with zeroes until offset 0x21
for i in range(13*2):
data.write(0)
data.start_packet()
data.crc_init()
data.chunk_init()
data.encode_crc(0x00) # TYPE_MSB
data.encode_crc(0x02) # TYPE_LSB
# ID: 0x1110 = firmware, 0x2220 = preset data
# 30xx = load preset
data.encode_crc(0x22)
data.encode_crc(0x20)
data.encode_crc_int()
data.flush()
#
# Preset header
#
data.reset_sum_byte()
data.encode(syx_preset_start)
data.encode(num)
data_length = build_data(preset, encoder=None)
syx_preset_length_msb = (data_length >> 8) & 0xff
syx_preset_length_lsb = data_length & 0xff
data.encode(syx_preset_length_msb)
data.encode(syx_preset_length_lsb)
data.crc_init()
#
# Preset data
#
build_data(preset, encoder=data)
data.encode(num) # index of this preset
data.encode(num) # index of last preset in this SysEx
data.encode_sum_byte()
data.flush()
data.stop()
#print "data_length=%s, msb=%s, lsb=%s" % (data_length, hex(syx_preset_length_msb), hex(syx_preset_length_lsb))
return ''.join(struct.pack("B", x) for x in data._buf)
