On Wed, Jul 22, 2015 at 6:25 AM, Francisco Medeiros <excalibas@gmail.com> wrote:
I got an open usb dmx and I haven't been able to get it working on linux. I think I will try with the raspberry pi but can it be controlled via pd?
Also the patch Martin Peach shared can be used with the open dmx usb on linux? do I need driver?
AFAIK the open usb dmx can be controlled by [comport] by sending a break followed by the dmx data at the correct baud rate. I recently added a break method to [comport] in svn. You probably need the driver to be able to set the baud rate to 250000. Unfortunately the svn repository at sourceforge is still down but I can post the code if you need it. The patch I posted is designed for the dmx usb pro, which uses its own microcontroller to manage the dmx interface. The open usb dmx is just a USB serial port with a dmx (IEE485) physical interface (as I understand it; I have never seen one in real life and the documentation for it is almost nonexistent).