Host USB Responses

NOTE : This feature is currently disabled. Contact Intrepid support for availability.

Overview

The RAD-Meteor can generate Ethernet frames that occur across the USB interface only. These responses allow the RAD-Meteor to communicate status to the host. For example, these responses can provide additional information about the T1s network. For example the status message contains status information like on the main screen.

164KB

RADMeteor.vs3

Vehicle Spy Setup File to decode status messages

Figure 1 - Analyzers like Vehicle Spy can decode Ethernet frame data such as the status message.

Responses

The data payload begins at 42 bytes. The first two bytes of the payload are the response id in big endian format (55 is the first byte). The response's data begins right after the command (44 bytes). The table below lists the responses.

Response	ID	Notes
HOST_RESPONSE_STATUS_ID	0x5501

Status Response

The status response is sent on a interval when commanded by the Settings command. It contains device status such as PHY settings, Network statistics, and device performance.

Position	ID	Encoding	Notes
HOST_RESPONSE_STATUS_PLCA_ACTIVE	0	bit
HOST_RESPONSE_STATUS_PLCASTATUS1	1	little endian bitfield	See below
HOST_RESPONSE_STATUS_PLCASTATUS2	3		Not Implemented
HOST_RESPONSE_STATUS_PLCASTATUS3	5		Not Implemented
HOST_RESPONSE_STATUS_BEACON_COUNT	7	uint32	Not Implemented
HOST_RESPONSE_STATUS_TX_OPPORTUNITY_CNT	11	uint32	Not Implemented

Figure 2 - PLCA Status bits reported in status 1.