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--- 2008:venus_protocol [2008/12/15 12:21] – tomgee
+++ 2008:venus_protocol [2008/12/19 18:19] (current) – tomgee
@@ Line 2: / Line 2: @@
 Venus functions as a gateway between a local 485 network and a remote master which is connected via a TNC and radio.
@@ Line 10: / Line 11: @@
   * 0x80 BB Venus
   * 0x81 BB Loge
@@ Line 18: / Line 21: @@
 |1      |0xFE     |Presynch2 |
 |2 |0xaa |Destination address |
-|3 |0xnn |packet data length |
+|3 |0xaa |Source address |
-|4 |0xpp |Opcode |
+|4 |0xnn |packet data length |
-|5-n|0xzz|data bytes|
+|5 |0xpp |Opcode |
+|6-n|0xzz|data bytes|
+|z1|CRC Lo|CRC byte lo|
+|z2|CRC Hi|CRC byte hi|
+==== LOGE Status Packet format ====
+|**Offset** |**contents** |**description** |
+|0      |0x7F     |Presynch1 |
+|1      |0xFE     |Presynch2 |
+|2 |0xaa |Destination address |
+|3 |0xaa |Source address |
+|4 |0xnn |packet data length |
+|5 |0xpp |Opcode |
+|6|0xzz|Version Major|
+|7|0xzz|Version Minor|
+|8|0xzz|Inside T LSD|
+|9|0xzz|Inside T MSD|
+|10|0xzz|Outside T LSD|
+|11|0xzz|Outside T MSD|
+|12|0xzz|relays|
+|12|0xzz|errors|
 |z1|CRC Lo|CRC byte lo|
 |z2|CRC Hi|CRC byte hi|
@@ Line 30: / Line 54: @@
 | 0x03|VN_ALERT|An alert message from Venus. The data contains where the alert originates|
 |0x04|VN_QUERY|Query the status of Venus functions|
-|0x05|LG_STATUS_REPLY|Status reply from LOGE. This will be encapsulated in Venus data.|
+|0x05|LG_STATUS_REPLY|Status reply from LOGE. This will be encapsulated in Venus data when forwarded.|
+|0x06|VN_STATUS_REPLY|Status reply of Venus data. |
+|0x07|LG_RQTEMP_HISTORY|Request temperature history from LOGE. |
+|0x08|VN_RQTEMP_HISTORY|Request temperature history from Venus. |
+==== Typical scenarios ====
+. BB Venus periodically polls LOGE, LOGE responds with status
+  * VENUS: (presynch) 0x7f, 0xfe, (dst address)0x81, (src address)0x80, (opcode) 0x02, (length) 0x06, crc lo, crc hi
+  * LOGE: (presynch) 0x7f, 0xfe, (dst address)0x80, (src address)0x81, (opcode) 0x02, (length) 0x06, crc lo, crc hi
+. Downing Venus polls LOGE. BB Venus receives poll, sends to LOGE, LOGE responds, Venus sends it out the gateway to the TNC
+  * VENUS downing: (presynch) 0x7f, 0xfe, (dst address)0x81, (src address)0x00, (opcode) 0x02, (length) 0x06, crc lo, crc hi
+  * VENUS BB: (presynch) 0x7f, 0xfe, (dst address)0x81, (src address)0x00, (opcode) 0x02, (length) 0xxx,
+  * LOGE BB: (presynch) 0x7f, 0xfe, (dst address)0x00, (src address)0x81, (opcode) 0x05, (length) 0xxx, crc lo, crc hi
+  * VENUS BB: (presynch) 0x7f, 0xfe, (dst address)0x00, (src address)0x80, (opcode) 0x07, (length) 0xxx,