Struggling to get a USB serial port device working. I have the pl2303 chipset which I've verified by a handful of external means (aka Linux box). I've tried two drivers, zoroyoshi's driver and the treiber one listed here. With the zoroyoshi one, it recognizes the device when i plug it in and correctly populates the registry and then the device shows up in the COM list. However, I'm not getting anything out of it (tried monitoring it with a dumb terminal program from a PC as well as connecting it to a USB serial modem). With the treiber one registry seems to populate OK and I think it's being recognized, but it doesn't show up in the COM list (at least, I don't see any of the COMs change names). Thoughts?
Update:
Still not working, but I should have looked at the treiber driver more closely. There are some utilities that come with it to ID the COM port and test it. It IDs as COM2 and seems to open, close, and write to the port fine, but I'm not seeing anything come across watching with a PC and I am not receiving anything when I send from the PC.
Update2:
When I plug/unplug the cable, the test utility reports status changes on the control lines, so it does seem to be talking to the device, even though I'm not getting any data in either direction. Starting to wonder if it's a levels issue- maybe the 900c just doesn't have enough oomph to send/read the data or something?
Update3:
Had another USB serial device that uses the FTDI chip instead of pl2303. With this one, I'm seeing characters on the PC side, but the HPC is still not receiving anything. *sigh*
Update:
Still not working, but I should have looked at the treiber driver more closely. There are some utilities that come with it to ID the COM port and test it. It IDs as COM2 and seems to open, close, and write to the port fine, but I'm not seeing anything come across watching with a PC and I am not receiving anything when I send from the PC.
Update2:
When I plug/unplug the cable, the test utility reports status changes on the control lines, so it does seem to be talking to the device, even though I'm not getting any data in either direction. Starting to wonder if it's a levels issue- maybe the 900c just doesn't have enough oomph to send/read the data or something?
Update3:
Had another USB serial device that uses the FTDI chip instead of pl2303. With this one, I'm seeing characters on the PC side, but the HPC is still not receiving anything. *sigh*