Sorry, I don't think I can be of any help with regards to driver hacking, but I am working on a similar application, and have successfully used USB->serial devices to talk to our modems.  I don't know if this solution works for you (size constraints, etc.) but I haven't had a problem with any of the units we've deployed.


On Fri, Mar 28, 2008 at 4:50 PM, Bryce McLean <> wrote:

Has anybody used GPIO to "create" the missing modem control lines (DSR, DCD, RI, DTR) on the Verdex FFUART?  We use wireless modems for remote connectivity that require all of the modem control lines.  I suspect that this involves writing a device driver, maybe somebody has done something similar?




Bryce McLean





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