This directory contains an AT client, providing helper functions to send commands to an AT interface (e.g. a V250 modem) over a UART in a standard way and parse the responses that are received back either synchronously or asynchronously as unsolicited responses. The client is used by various of the other ubxlib module in carrying out their functions, it is not intended for direct use by a customer. It sits on top of the port API, meaning that it can be used on any platform that the port API supports.
The api directory defines the AT client API. The test directory contains tests for that API that can be run on any platform.