Consume DMX-512 feed over serial line (usualy over RS458 to RS232 converter)
Project description
DMX-512 python serial client
Per limitation of pySerial this utility helps with properly setting the serial port on POSIX/LINUX and detecting SYNC/BREAK within the stream of data
Usage
from roh.dmx.client.dmx_client import DmxClient
from roh.dmx.client.dmx_client_callback import DmxClientCallback
from typing import Dict
# define callback, you can override even just one method, for example data_received
class MyDmxCallback(DmxClientCallback):
"""
Example implementation of all available callback methods
"""
def sync_lost(self) -> None:
print("SYNC LOST")
def sync_found(self) -> None:
print("SYNC FOUND")
def data_received(self, monitored_data: Dict[int, int]) -> None:
print("VALID MONITORED DATA: %s" % monitored_data)
def full_data_received(self, data: bytes) -> None:
pass
# use client with /dev/ttyUSB0 port and monitor dmx address no. 1 for values
c: DmxClient = DmxClient('/dev/ttyUSB0', [1], MyDmxCallback())
c.run()
References
- https://github.com/pyserial/pyserial/issues/539 - Issue about pySerial limitation when consuming DMX-512
- Using a Raspberry Pi as a PC-DMX interface (Florian Edelmann) - PDF
- https://man7.org/linux/man-pages/man3/termios.3.html - documentation of PARMRK, IGNBRK and BRKINT settings of virtual terminal
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