"Roy Smith" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote: >> While I realize this is more on a driver/hardware level it's >> interesting that it's so difficult to use a different protocol for an >> existing driver. For example, all serial does is a series of high and >> low voltages on specific pins. Why should it be so hard to use an >> existing driver and hold a pin on high? > > It's been a long time since I've looked at this low-level hardware, but > the > answer is almost certainly, "No just 'so hard', but 'impossible'".
If you just need one or two signals, then it might be practical to use one of the control lines, and PySerial supports this (UPS monitoring software often works this way). Setting 8 pins to 1 would be impossible, because there plain won't be that number of outputs wired, in addition to all the good stuff about UARTs Roy said. -- http://mail.python.org/mailman/listinfo/python-list
