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changed dmx-plugin enttec driver to match python-3 serial requirements. #179

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changed dmx-plugin enttec driver to match python-3 serial requirements. #179

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34 changes: 28 additions & 6 deletions plugins/dmx/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -48,10 +48,8 @@ def __init__(self, smarthome, tty, interface='nanodmx'):
logger.warning("Could not communicate with dmx adapter.")
self._is_connected = False
elif interface == 'enttec':
self._enttec_data = [chr(0)] * 513
self._enttec_data = bytearray(512)
self.send = self.send_enttec
self._send_enttec(chr(0o3) + chr(0o2) + chr(0) + chr(0) + chr(0))
self._send_enttec(chr(10) + chr(0o2) + chr(0) + chr(0) + chr(0))
else:
logger.error("Unknown interface: {0}".format(interface))

Expand All @@ -76,7 +74,7 @@ def _send_enttec(self, data):
if not self._is_connected:
return False
self._lock.acquire()
self._port.write((chr(126) + data + chr(231)).encode())
self._port.write(data)
self._lock.release()
return True

Expand All @@ -91,8 +89,32 @@ def send_nanodmx(self, channel, value):
self._send_nanodmx("C{0:03d}L{1:03d}".format(int(channel), int(value)))

def send_enttec(self, channel, value):
self._enttec_data[channel] = chr(value)
self._send_enttec(chr(6) + chr(1) + chr(2) + ''.join(self._enttec_data))
START_VAL = 0x7E
END_VAL = 0xE7

LABELS = {
'GET_WIDGET_PARAMETERS' :3, #unused
'SET_WIDGET_PARAMETERS' :4, #unused
'RX_DMX_PACKET' :5, #unused
'TX_DMX_PACKET' :6,
'TX_RDM_PACKET_REQUEST' :7, #unused
'RX_DMX_ON_CHANGE' :8, #unused
}

START_DATA = 0x00

self._enttec_data[channel] = int(value);

packet = bytearray()
packet.append(START_VAL)
packet.append(LABELS['TX_DMX_PACKET'])
packet.append(len(self._enttec_data) & 0xFF)
packet.append((len(self._enttec_data) >> 8) & 0xFF)
packet.append(START_DATA)
packet.extend(self._enttec_data)
packet.append(END_VAL)

self._send_enttec(packet)

def parse_item(self, item):
if 'dmx_ch' in item.conf:
Expand Down