send and receive from usb port

[bienmexicano]

Hi guys i Know that the usb is a common interface to comunicate a pc and a vast collection of devices but what i would like to do is just send and receive bytes from the usb port using autoit, kinda like with the serial port udf.

i'm working in a project that require comunication between the pc and 2 devices connected to the serial ports but a 2nd serial port is kinda hard to find and i don't wanna buy one of those usb to serial cables, when i just got some simple usb cables that might do the work, so the only question is how?

if some one know a way to do it with autoit, and would be so kind to helpme,i would appreciate it so much!.

thanx in advance.

[martin]

Hi guys i Know that the usb is a common interface to comunicate a pc and a vast collection of devices but what i would like to do is just send and receive bytes from the usb port using autoit, kinda like with the serial port udf.

i'm working in a project that require comunication between the pc and 2 devices connected to the serial ports but a 2nd serial port is kinda hard to find and i don't wanna buy one of those usb to serial cables, when i just got some simple usb cables that might do the work, so the only question is how?

if some one know a way to do it with autoit, and would be so kind to helpme,i would appreciate it so much!.

thanx in advance.

It might sound easy but I think a USB to Serial port converter is very much easier.

Some devices with usb actually emulate serial ports. Try plugging one of the devices into the usb and then check Control Panel|System|Hardware|Device Manager and look at the ports. If one of the COM ports disappears when you unplug the device then it uses serial port emulation. (This is assuming you have installed the driver for the device.)

USB to Serial port device drivers are freely available and I know of one case where installing one enabled communication with a very expensive USB deveice that was supposed to be used with special software.

[bienmexicano]

It might sound easy but I think a USB to Serial port converter is very much easier.

Some devices with usb actually emulate serial ports. Try plugging one of the devices into the usb and then check Control Panel|System|Hardware|Device Manager and look at the ports. If one of the COM ports disappears when you unplug the device then it uses serial port emulation. (This is assuming you have installed the driver for the device.)

USB to Serial port device drivers are freely available and I know of one case where installing one enabled communication with a very expensive USB deveice that was supposed to be used with special software.

thankyou martin for your answer!

well the thing is that the devices are 2 palms treo 700p and i need to figure out a way to send and receive data with the usb port because that's the way these devices comunicate with the computer, all that tnx to the small minded people of Windows mobile, so i want to do this avoiding the idea of purchase the usb to serial adaptor, but maybe you're right and get the adaptor would be the better and easiest solution.

tnx for the help.

[bienmexicano]

well just to refresh this!

it seems that i still require to use the USB port to comunicate the problem is that i can't depend of the Serial UDF.

please if someone knows anything about usb comunication with devices it would help me