# hands-on

* **cmd_get_firmware_version**
* Request ``a0 03 ff 72 ec``

| Head | Len | Address | Cmd | Check |
| -------- | -------- | -------- | -------- | -------- |
| 0xA0 | 0x03 | | 0x72 | |

* Response ``a0 05 ff 72 01 00 e9``

| Head | Len | Address | Cmd | Major | Minor | Check |
| ----- | ----- | -------- | ----- | ----- | ----- | ----- |
| 0xA0 | 0x05 | | 0x72 | | | |

* **cmd_real_time_inventory**
* TCP Clinet (192.168.1.127)
* send:``a0 04 ff 89 01 d3``
* received: a0130189e83000``000000000070022110424067``48d7
* 電子產品碼™ (EPC) 000000000070022110424067
* 網路層 TCP 協議自動回送 ACK，表示收到確認。
* received: ``a00aff8900002000000001ad``
* 網路層 TCP 協議自動回送 ACK，表示收到確認。

| Head | Len | Address | Cmd | Repeat | Check |
| ----- | ----- | -------- | ----- | ------ | ----- |
| 0xA0 | 0x04 | | 0x89 | | |

* Wireshark Network Packet Capture
* TCP / UDP Debugger