On 8/19/2011 08:51, Ken Hornstein wrote:
The wiring appears fine, I do have a signal right at the DCD pin entering the IPX.From first glance, you've done all the right things. Have you actuallyverified that the DCD signal is actually changing at the hardware level, via a breakout box or something like that? You could put a printf in zstty_stint() to see if DCD status changes are actually making it into the kernel. --Ken
Yes, I pulled apart the connector shell and probed the DCD pin directly. There is a signal present at the pin. I didn't have my oscilloscope out to verify the voltage yet so that's the next step just in case the drive voltage is off.
I'll also go ahead and try the printf later. Do you happen to know which file has zstty_stint? The compile takes most of the night so that's a bit slower than the voltage test.