The DS18B20 chip looks really interesting to me, and I’d really like a string of several of the chips connected to a single interface, I just don’t know where to get started.
I’ve got plenty of linux experience, and even more developing C/C++ programs, but very little with actually hooking together electronic components.
That chip has 3.3V interface so you cannot connect it directly to OMAP3. Bi-directional level shifter or some other solution is required. Maxim provides an example here http://www.maxim-ic.com/app-notes/index.mvp/id/4477
I would first try to find for 1.8V device.
The 1-wire pin is not exposed on beagleboard so the w1-gpio that Koen suggests on the other mail is your only option.
The DS18B20 chip looks really interesting to me, and I’d really like a string of several of the chips connected to a single interface, I just don’t know where to get started.