今天做了一個解說USB封包的工具，當做是USB中級心法系列的準備。 有興趣學習USB的人可以自己先玩一下來熟悉所謂的3*3。
| Get Device Descriptor - Index=0 Length=18 |
| SETUP txn - 80 06 00 01 00 00 12 00 |
| SETUP packet |
| SYNC |
| 00000001 |
| SETUP |
| 0xB4 |
| ADDR |
| 0x01 |
| ENDP |
| 0x0 |
| CRC5 |
| 0x17 |
| DATA0 packet |
| SYNC |
| 00000001 |
| DATA0 |
| 0xC3 |
| DATA |
| 80 06 00 01 00 00 12 00 |
| CRC16 |
| 0x072F |
| ACK packet |
| SYNC |
| 00000001 |
| ACK |
| 0x4B |
| IN txn - 12 01 00 02 00 00 00 08 |
| IN packet |
| SYNC |
| 00000001 |
| IN |
| 0x96 |
| ADDR |
| 0x01 |
| ENDP |
| 0x0 |
| CRC5 |
| 0x17 |
| DATA1 packet |
| SYNC |
| 00000001 |
| DATA1 |
| 0xD2 |
| DATA |
| 12 01 00 02 00 00 00 08 |
| CRC16 |
| 0xEAE7 |
| ACK packet |
| SYNC |
| 00000001 |
| ACK |
| 0x4B |
| IN txn - 6D 04 16 C0 40 03 01 02 |
| IN packet |
| SYNC |
| 00000001 |
| IN |
| 0x96 |
| ADDR |
| 0x01 |
| ENDP |
| 0x0 |
| CRC5 |
| 0x17 |
| DATA0 packet |
| SYNC |
| 00000001 |
| DATA0 |
| 0xC3 |
| DATA |
| 6D 04 16 C0 40 03 01 02 |
| CRC16 |
| 0x5ACF |
| ACK packet |
| SYNC |
| 00000001 |
| ACK |
| 0x4B |
| IN txn - 00 01 |
| IN packet |
| SYNC |
| 00000001 |
| IN |
| 0x96 |
| ADDR |
| 0x01 |
| ENDP |
| 0x0 |
| CRC5 |
| 0x17 |
| DATA1 packet |
| SYNC |
| 00000001 |
| DATA1 |
| 0xD2 |
| DATA |
| 00 01 |
| CRC16 |
| 0xFCF1 |
| ACK packet |
| SYNC |
| 00000001 |
| ACK |
| 0x4B |
| OUT txn - |
| OUT packet |
| SYNC |
| 00000001 |
| OUT |
| 0x87 |
| ADDR |
| 0x01 |
| ENDP |
| 0x0 |
| CRC5 |
| 0x17 |
| DATA1 packet |
| SYNC |
| 00000001 |
| DATA1 |
| 0xD2 |
| DATA |
| CRC16 |
| 0x0000 |
| ACK packet |
| SYNC |
| 00000001 |
| ACK |
| 0x4B |
| Get Configuration Descriptor - Index=0 Length=255 |
| SETUP txn - 80 06 00 02 00 00 FF 00 |
| SETUP packet |
| SYNC |
| 00000001 |
| SETUP |
| 0xB4 |
| ADDR |
| 0x01 |
| ENDP |
| 0x0 |
| CRC5 |
| 0x17 |
| DATA0 packet |
| SYNC |
| 00000001 |
| DATA0 |
| 0xC3 |
| DATA |
| 80 06 00 02 00 00 FF 00 |
| CRC16 |
| 0x9725 |
| ACK packet |
| SYNC |
| 00000001 |
| ACK |
| 0x4B |
| IN txn - 09 02 22 00 01 01 00 A0 |
| IN packet |
| SYNC |
| 00000001 |
| IN |
| 0x96 |
| ADDR |
| 0x01 |
| ENDP |
| 0x0 |
| CRC5 |
| 0x17 |
| DATA1 packet |
| SYNC |
| 00000001 |
| DATA1 |
| 0xD2 |
| DATA |
| 09 02 22 00 01 01 00 A0 |
| CRC16 |
| 0x5019 |
| ACK packet |
| SYNC |
| 00000001 |
| ACK |
| 0x4B |
| IN txn - 32 09 04 00 00 01 03 01 |
| IN packet |
| SYNC |
| 00000001 |
| IN |
| 0x96 |
| ADDR |
| 0x01 |
| ENDP |
| 0x0 |
| CRC5 |
| 0x17 |
| DATA0 packet |
| SYNC |
| 00000001 |
| DATA0 |
| 0xC3 |
| DATA |
| 32 09 04 00 00 01 03 01 |
| CRC16 |
| 0xACB2 |
| ACK packet |
| SYNC |
| 00000001 |
| ACK |
| 0x4B |
| IN txn - 02 00 09 21 10 01 00 01 |
| IN packet |
| SYNC |
| 00000001 |
| IN |
| 0x96 |
| ADDR |
| 0x01 |
| ENDP |
| 0x0 |
| CRC5 |
| 0x17 |
| DATA1 packet |
| SYNC |
| 00000001 |
| DATA1 |
| 0xD2 |
| DATA |
| 02 00 09 21 10 01 00 01 |
| CRC16 |
| 0x68CE |
| ACK packet |
| SYNC |
| 00000001 |
| ACK |
| 0x4B |
| IN txn - 22 34 00 07 05 81 03 04 |
| IN packet |
| SYNC |
| 00000001 |
| IN |
| 0x96 |
| ADDR |
| 0x01 |
| ENDP |
| 0x0 |
| CRC5 |
| 0x17 |
| DATA0 packet |
| SYNC |
| 00000001 |
| DATA0 |
| 0xC3 |
| DATA |
| 22 34 00 07 05 81 03 04 |
| CRC16 |
| 0xB587 |
| ACK packet |
| SYNC |
| 00000001 |
| ACK |
| 0x4B |
| IN txn - 00 0A |
| IN packet |
| SYNC |
| 00000001 |
| IN |
| 0x96 |
| ADDR |
| 0x01 |
| ENDP |
| 0x0 |
| CRC5 |
| 0x17 |
| DATA1 packet |
| SYNC |
| 00000001 |
| DATA1 |
| 0xD2 |
| DATA |
| 00 0A |
| CRC16 |
| 0x7E12 |
| ACK packet |
| SYNC |
| 00000001 |
| ACK |
| 0x4B |
| OUT txn - |
| OUT packet |
| SYNC |
| 00000001 |
| OUT |
| 0x87 |
| ADDR |
| 0x01 |
| ENDP |
| 0x0 |
| CRC5 |
| 0x17 |
| DATA1 packet |
| SYNC |
| 00000001 |
| DATA1 |
| 0xD2 |
| DATA |
| CRC16 |
| 0x0000 |
| ACK packet |