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Re: serial issue

From: Jeff Mann   jeffjeffmann.com
Date: Wed, 2 May 2007 08:04:41 -0700

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hi nell - 

hi all,

we are using a usb to serial adapter (brand pololu USB01A) that we found a generic driver for (there is no mac driver as yet). but the driver we were advised to use is not accompanied by any kind of interface on the mac to address the adapter, and find out its port info. so we can't set up the serial object in max/msp to match it and communicate through it. has anyone had any experience with such an adapter?

the only port info you need is the name of the port. all other parameters, baud rate etc., are set through the serial object in max. you don't need to match existing settings in the port, you just set it to what you want with the serial object.

if you send the message "print" to the serial object, it should print a list of the ports it knows about. do you see your device listed? if so, that's all you need, just use that as the argument to the serial object, along with your desired baud rate.

if your device isn't listed by the max serial object, you can also check in the terminal whether it's working. if i do:

$ ls /dev/tty.*
tty.modem

...the "tty.modem" device file represents the modem on my powerbook. if i then attach my USA19Q adapter, i see a new device file is created:

$ ls /dev/tty.*
/dev/tty.USA19QW191P1.1 /dev/tty.modem

if i unplug the adapter, the device file goes away.

if you don't see a new device show up when you plug in the adapter, then either it or the driver isn't working.

good luck... <jeff

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