Changes

The query cycle is a conversation regarding the status of the digital board.  It polls the sensor devices and reports back their most recent data.   

The query cycle is a conversation regarding the status of the digital board.  It polls the sensor devices and reports back their most recent data.   

The Q-packet is sent from the PC to the FPGA to request a status report from its sensor chips. There is no data attached to a query packet: the FPGA triggers the [[FPGA_Querier|query module]] upon recognizing a Q-type packet, which is identified as ASCII '''Q''': 0x51, 0101 0001 in the packet type field (2nd byte of packet payload). The boards reports back in response to the query via the [[Ethernet_packets#"S" packet: status report|S-packet]].

The Q-packet is sent from the PC to the FPGA to request a status report from its sensor chips. There is no data attached to a query packet: the FPGA triggers the [[FPGA_Querier|query module]] upon recognizing a Q-type packet, which is identified as ASCII '''Q''': 0x51, 0101 0001 in the packet type field (2nd byte of packet payload). The board reports back in response to the query via the [[Ethernet_packets#"S" packet: status report|S-packet]].

 

=== The programming cycle - "P" Packet===

=== The programming cycle - "P" Packet===