Interface USB->DMX512

[folkeu]

Hello,
Someone have a function in C for receive and transmit a signal DMX512 for a pic 18F4550 ?
The project is to make an interface USB to DMX512 who can receive et transmit a trame DMX512 with a pic 18F4550 in HID mode (No driver).
The dialog with the PC is OK at this time. The sold to develop is the trame DMX512.
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[viji]

Hello Friend
Please refer cypress.com you will find an application note for USB
to DMX512
thanks

[folkeu]

Hello,

Thanks you.
In a few week, I have find the datasheet of these application but i have not go to the site for download the zip file with the firmware.
I retrun sleep !!!!!!!!!!!!!
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[folkeu]

Here too : avanttheme2009.canalblog.com/
I test it in a few days
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[charudatt]

I have made my self two (actually 3) pieces of test gear to understand the working of DMX protocol and have fun. I have made a uDMX - USB-DMX interface from [anyma], Henne's DMX analyser and a serial Dworkin DMX controller. Although Henne's DMX analyser worked first shot, I am having trouble with the other two interfaces.

I successfully flashed the USB-DMX interface with the code and had the PC detect it and install its drivers as well, but when I use it with the DMXControl software , i get no response. I use the DMX analyser to test the result and I see no signal out of the USB DMX Controller. Is there a way to configure the DMXControl software to recognise the Interface.

Has anyone successfully used the USB DMX Controller with DMX Control software, could surely help. I have no information available on how to hook up my third Interface with the software.

regards.

ref: http://www.hoelscher-hi.de/hendrik/english/analyzer.htm, http://dworkin-dmx.de/en/, http://www.anyma.ch/research/udmx/

[folkeu]

Hello, It's difficult to help you because there is no firmware and software source.
You can make the analyser of Elektor, it's good.
You can make in first time the interface //->DMX512 of oksid :http://www.whoow.org/people/Jean-Marc.Lienher/spp2dmx/index.html
I make the interface of theme 2009 for the usb
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[charudatt]

Thank you for your reply, but the problem with me is I don't have a Parallel port on my computer. Parallel port is gone. I am interested in some USB design only which will work with freeware like Freestyle or DMX Control.

How did your interface from Theme 2009 for USB go. Please share your results with maybe some photographs of the interface, and what software you used along with it.

regards

[folkeu]

Hello,
In the first time, I draw the a new PCB of the interface USB-> DMX512 of the french school with an enter and a output isolated. The shema is drawing and this W-E (It's rain !), I make the draw of the PCB. In a few days, I test the original firmawre on my new PCB. If it's OK, I modifie the firmware for 512 and not 50 lines DMX.
But for that, i'm a biginner in C !! I don't know if I arrived faster. I don't know someone who's can help me ! I wan't to use a USB interface and i want too make implement for freestyler and  PCDimmer2008 (Too freeware on souceforge.com). We can work themself if you want. I can send you in MP my mail.
A have a demux with a PIC 16F877a who can drive 24 lines DMX 0-10V or 24 relays. The firmware is in assembler and it's a friend who as write it.
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[charudatt]

I already have some things ready at my end. I can send you the Post Script file of the design.

You can understand the schematic. This is a test setup I designed for experiments on DMX.

regards

[The_Dutchman]

Hello, my first post on this forum
A while ago I progged AVR-DMX, I made it an open-source project, its not yet USB yet, but that is just a "minor" adjustment for who knows a little about programming. Yet again, this is for AVR.

http://sourceforge.net/projects/avrdmx/

Greetings

[charudatt]

A while ago I progged AVR-DMX, I made it an open-source project,

Welcome to the forum, any write up or schematic diagram for the project.

[folkeu]

Hello
I am French and I have talks with the professors of the secondary school of the site theme2009.fr. My association and the shool let us go to conventionner to finalize this interface USB-> DMX512. I write the functional conditions of contract and your wishes in MP are the welcome.
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[Kibito]

Hello. I have a complete project of DMX made with a Holtek uC, Cortex-M3, HT32F1755 (program via USB), with simultaneus output of DMX-512 and WS2801. Tested with Glediator and Free Styler, work as a "Mini-DMX".

If anyone is interested I will post the "bin" file.

[Kibito]

Follow the source code in C, with IDE of IAR Embedded Workbench.
The code is short, more than half of the code was taken from examples of Holtek Firmware Library (USB Virtual COM Port, USART, SPI, GPTM)

[adelgado]

Hi,

take a look at the project http://www.micropic.es/mpblog/2007/12/receptor-dmx-dmx512/ It was made for 18f2550, so it will be very easy to migrate to 18f4550.

Best Regards.