[Boost-users] Can someone provide an Asio Serial Port example?

I would like to use Asio to connect to a microcontroller to send and read from, but there are no serial_port samples available. For instance, I would like to type an ‘a’ into the keyboard and have the microcontroller return 1. The microcontroller is already programmed for this but I need to create an interface for it. A sample that does this or any working sample at all would be sincerely appreciated. Thank you, Jeff