--- In [email protected], "zebulon7482" <[EMAIL PROTECTED]> wrote: > > Hello, > > I'm certainly going to buy a foxboard but I have some questions...: > I want to send (with the ttyS3 serial port at 250000 baud) 512 bytes > (loaded in RAM), make a 88us break, 512 bytes, make a 88us break.... > again and again in a background task.
I smell DMX in the air! I already thought I smelled DMX when you where asking about the 250kbaud UART, but this realy confirms this :) > - Will the fact of using an external chip (uc or FPGA) linked to the > fox board with parallel port reduce the CPU load ? I'm not technical enough to make it work, but I was thinking to implement a dedicated DMX device with a buffer in FPGA. This transmitter could work on its own and you only would need to update the RAM buffer when updating your DMX output. I think performance gain depends on the usage. It might not help a lot when you update your DMX universe a couple of times per second, but if changes are infrequent the load is minimal. Kind regards, Vincent de Lau [EMAIL PROTECTED]
