Mercurial > code > home > repos > light9
changeset 1286:beffbc7f8a6d
udmx driver
Ignore-this: dc8728fe120a60c37cfabc37dfc2d14d
| author | Drew Perttula <drewp@bigasterisk.com> |
|---|---|
| date | Mon, 02 May 2016 07:51:46 +0000 |
| parents | 7d33056233f9 |
| children | 1382cb43a3ca |
| files | light9/io/udmx.py pydeps |
| diffstat | 2 files changed, 51 insertions(+), 0 deletions(-) [+] |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/light9/io/udmx.py Mon May 02 07:51:46 2016 +0000 @@ -0,0 +1,50 @@ +from __future__ import division +import usb.core +from usb.util import CTRL_TYPE_VENDOR, CTRL_RECIPIENT_DEVICE, CTRL_OUT + +""" +Send dmx to one of these: +http://www.amazon.com/Interface-Adapter-Controller-Lighting-Freestyler/dp/B00W52VIOS + +[4520784.059479] usb 1-2.3: new low-speed USB device number 6 using xhci_hcd +[4520784.157410] usb 1-2.3: New USB device found, idVendor=16c0, idProduct=05dc +[4520784.157416] usb 1-2.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3 +[4520784.157419] usb 1-2.3: Product: uDMX +[4520784.157422] usb 1-2.3: Manufacturer: www.anyma.ch +[4520784.157424] usb 1-2.3: SerialNumber: ilLUTZminator001 + +See https://www.illutzmination.de/udmxfirmware.html?&L=1 + sources/commandline/uDMX.c +or https://github.com/markusb/uDMX-linux/blob/master/uDMX.c +""" + +cmd_SetChannelRange = 0x0002 + +class Udmx(object): + def __init__(self): + self.dev = usb.core.find(idVendor=0x16c0, idProduct=0x05dc) + + def SendDMX(self, buf): + ret = self.dev.ctrl_transfer( + bmRequestType=CTRL_TYPE_VENDOR | CTRL_RECIPIENT_DEVICE | CTRL_OUT, + bRequest=cmd_SetChannelRange, + wValue=len(buf), + wIndex=0, + data_or_wLength=buf) + if ret < 0: + raise ValueError("ctrl_transfer returned %r" % ret) + + +def demo(chan, fps=44): + import time, math + u = Udmx() + while True: + nsin = math.sin(time.time() * 6.28) / 2.0 + 0.5 + nsin8 = int(255 * nsin) + try: + u.SendDMX('\x00' * (chan - 1) + + chr(210) + + chr(nsin8) + chr(nsin8) + chr(nsin8)) + except usb.core.USBError as e: + print "err", time.time(), repr(e) + time.sleep(1 / fps)