The Cricket listener provides data in ASCII format to software running on the attached host over an RS232 interface. The serial command interface parameters are:
|Transmission speed||115200 bits/second|
|Data format||8 bits, no parity|
|Flow control||Xon/Xoff (``software'')|
The ASCII-based serial port command interface is similar to the ``AT'' command interface that modems use. The command interface is accessible using standard utilities like HyperTerminal or minicom. Section 1.2 describes how to use these utilities to send commands to Cricket.