There are no GPIO blocks available for BeagleBoard in this support package. However, we are planning to add support for GPIO read/write in a future release.
There is no PWM on BeagleBoard (xM or Bx/Cx). You can emulate a basic PWM using GPIO but this would be a poor substitute.
BeagleBone support is planned for a feature release.
The Angstrom distribution has V4L2 drivers for a set of Webcams. The UVC Webcams, for example, are well-supported. I use a Logitech Webcam C6000 and it works well. One thing you might try is to see if the kernel module for UVC webcam is loaded. Look at the following link: https://wiki.archlinux.org/index.php/Webcam_Setup. This is for Ubuntu but Angstrom is similar.
