Serial Communication
@ 38400 Baud, 8 Data bits, No Parity, 1 Stop Bit

To begin a read/write transaction
Host > Radio : 0x50, 0x56, 0x4F, 0x4A, 0x48, 0x5C, 0x14
Radio > Host : 0x06 (Ack)
Host > Radio : 0x02 (ID Req?)
Radio > Host : [8 Bytes] (unimportant)
Host > Radio : 0x06 (Ack)
Radio > Host : 0x06 (Ack)

data is read and written in 32 byte blocks at 32 byte boundaries

To read data
Host > Radio : 0x52 AD1 AD0 0x20
Radio > Host : 0x57 AD1 AD0 0x20 CKS [32 bytes]

To write data
Host > Radio : 0x57 AD1 AD0 0x20 [32 bytes] CKS
Radio > Host : 0x06 (Ack)

To end the transaction
Host > Radio : 0x45
Radio > Host : 0x06 (Ack)
Host > Radio : 0x02 (ID Req?)
Radio > Host : [8 Bytes]

AD0 = Least significant byte of address
AD1 = Most significant byte of address
(Note: AD0 mod 0x20 = 0)
CKS = Regular additive checksum of the 32 data bytes



ComSnooper Outputs COM13=Host COM24=Radio
-----------------------------------------


Transaction Start Sequence

                                        +--------------------------------------------------------------------+
                                        | COM13 -> COM24 (Length:7)                                          |
                                        +--------------------------------------------------------------------+
                                        | 50 56 4F 4A 48 5C 14                            | PVOJH\·          |
                                        +--------------------------------------------------------------------+

+--------------------------------------------------------------------+
| COM24 -> COM13 (Length:1)                                          |
+--------------------------------------------------------------------+
| 06                                              | ·                |
+--------------------------------------------------------------------+

                                        +--------------------------------------------------------------------+
                                        | COM13 -> COM24 (Length:1)                                          |
                                        +--------------------------------------------------------------------+
                                        | 02                                              | ·                |
                                        +--------------------------------------------------------------------+

+--------------------------------------------------------------------+
| COM24 -> COM13 (Length:7)                                          |
+--------------------------------------------------------------------+
| 50 33 31 31 38 35 FF FF                         | P31185··         |
+--------------------------------------------------------------------+

                                        +--------------------------------------------------------------------+
                                        | COM13 -> COM24 (Length:1)                                          |
                                        +--------------------------------------------------------------------+
                                        | 06                                              | ·                |
                                        +--------------------------------------------------------------------+

+--------------------------------------------------------------------+
| COM24 -> COM13 (Length:1)                                          |
+--------------------------------------------------------------------+
| 06                                              | ·                |
+--------------------------------------------------------------------+





Data Read
                                        +--------------------------------------------------------------------+
                                        | COM13 -> COM24 (Length:4)                                          |
                                        +--------------------------------------------------------------------+
                                        | 52 1B 40 20                                     | R·@              |
                                        +--------------------------------------------------------------------+

+--------------------------------------------------------------------+
| COM24 -> COM13 (Length:37)                                         |
+--------------------------------------------------------------------+
| 57 1B 40 20 00 00 00 00 00 00 00 00 00 00 00 00 | ·@ ············· |
| 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ···············  |
| 00 00 00 00 00                                  | ·····            |
+--------------------------------------------------------------------+




Data Write
                                        +--------------------------------------------------------------------+
                                        | COM13 -> COM24 (Length:37)                                         |
                                        +--------------------------------------------------------------------+
                                        | 57 06 40 20 FF FF FF FF FF FF FF FF FF FF FF FF | W·@ ············ |
                                        | FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF | ················ |
                                        | FF FF FF FF E0                                  | ·····            |
                                        +--------------------------------------------------------------------+

+--------------------------------------------------------------------+
| COM24 -> COM13 (Length:1)                                          |
+--------------------------------------------------------------------+
| 06                                              | ·                |
+--------------------------------------------------------------------+





Transaction End Sequence

                                        +--------------------------------------------------------------------+
                                        | COM13 -> COM24 (Length:1)                                          |
                                        +--------------------------------------------------------------------+
                                        | 45                                              | E                |
                                        +--------------------------------------------------------------------+

+--------------------------------------------------------------------+
| COM24 -> COM13 (Length:1)                                          |
+--------------------------------------------------------------------+
| 06                                              | ·                |
+--------------------------------------------------------------------+

                                        +--------------------------------------------------------------------+
                                        | COM13 -> COM24 (Length:1)                                          |
                                        +--------------------------------------------------------------------+
                                        | 02                                              | ·                |
                                        +--------------------------------------------------------------------+

+--------------------------------------------------------------------+
| COM24 -> COM13 (Length:7)                                          |
+--------------------------------------------------------------------+
| 50 33 31 31 38 35 FF FF                         | P31185··         |
+--------------------------------------------------------------------+