Assuming your camera is RS232, you can use a simple RS232 daughter card on the Raspberry (about $7 from MCM electronics and others). I have done this exact thing for communications with an old RS232 device. Alternative is of course a USB to RS232 adapter and as Greg writes, you just change the target device file (the $7 adapter also creates a /dev/ttyxxx device. -Bruce On Jul 21, 2014, at 12:18 PM, Greg KH <greg@kroah.com> wrote:
On Mon, Jul 21, 2014 at 03:19:00AM +0000, Amadeus W.M. wrote:
Not sure if this is the right venue for this question, please direct me to the right place if it's not.
I have a C program that opens the serial port /dev/ttyS0 and sends commands (as strings) back and forth to a pan-tilt-zoom camera. That works very well, but I want to use the camera with a Raspberry Pi, which of course does not have a serial port (RS232). One option is to use a RS232 to usb adapter and rewrite the C code for the usb port. So how do I go about that? Is usb serial port programming possible and documented anywhere?
Nothing to "rewrite", just point your code at /dev/ttyUSB0 instead, and away you go...
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