On Sun, 9 Jun 2013 10:38:01 +0200 Mastro Gippo <gip...@gmail.com> wrote:
> Hello, I'm working with a PL2303 device and I had an issue with the > driver. Basically, I can't set the baudrate to 250kbps, but everything > is better explained here: > http://stackoverflow.com/questions/17000078/prolific-pl2303-serial-port-to-250000bps > I think that removing lines from 332 to 348 of the driver the device > will work even with non-standard (but common in embedded devices) > baudrates. Baudrates standards were set a long time ago to use the > same clock to generate human-compatible timing, for example with > 32.768kHz crystals. Nowadays, crystals come mostly in round numbers, > and the Prolific device makes no exception, having a 12MHz clock. In > all my embedded project I'm running these non-standard baudrates for > that same reason. It's also worth pointing out that lighting control via DMX512 runs at 250kbps (RS485, unidirectional), so being able to select that rate on USB-serial adaptors would make a fair amount of weird and wonderful (expensive!) converter hardware unnecessary. I can't comment on whether the driver change makes this possible, though! Richard -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
