Configurable intelligent I/O expander system

摘要

A method and apparatus in a vehicular telemetry system for an intelligent I/O expander. The intelligent I/O expander may be configured in an active mode or a passive mode. A vehicular telemetry hardware system may be configured in a passive serial control mode or an active serial control mode. The intelligent I/O expander capable of adding additional device to the vehicular telemetry system.

主权项

1. A method of initializing an intelligent I/O expander and a vehicular telemetry hardware system, the method comprising:
determine I/O expander port type, if serial, set serial type and passive expander mode, if auxiliaries, set auxiliaries type and active expander mode, communicate said I/O expander port type to said vehicular telemetry hardware system, if serial, communicate with said intelligent I/O expander and receive a device type, if said device type is a first device type, set said vehicular telemetry hardware system to active serial control mode, if said device type is a second device type, set said vehicular telemetry hardware system to passive serial control mode, if auxiliaries, communicate monitoring characteristics to said intelligent I/O expander.