Proxima ASA 7911, 7910 manual MCP Responses From Serial Adapter, Data Packet Received

MCP Responses From Serial Adapter

This section describes the format of MCP response messages passed from the Serial Adapter to an External Computer.

Data Packet Received

Purpose: This is the message used by the Serial Adapter to deliver packets to the External Computer which have been received by the Serial Adapter over the radio.

Message Format:

BYTE	response (ASCII ‘d’, 64H)
BYTE	rssi	;Radio signal strength of received
		:packet
BYTE	pinstat	;RS-232 pin status of sending node
BYTE	len H	;Length of the user message
BYTE	len L
BYTE	srcaddr H	;IP Address of source
BYTE	srcaddr 3
BYTE	srcaddr 2
BYTE	srcaddr L
BYTES	user message

Status Indication of Transmitted Packet

Purpose: This message informs the External Computer of the status of the most recent data message sent to the Serial Adapter with the Transmit Data Packet command. The response contains a duplicate of the sequence number provided in the original Trans- mit Data Packet message, as well as the length and destination address. In addition, a StatusInd code is provided which indi- cates whether the message was sent successfully to the TCP/IP stack or not.

81