处理来自 Delphi 应用程序 R/W 的 RFID
Handle a RFID from Delphi Application R/W
我需要 read/write 使用 RFID 的卡片 Reader
更具体地说：
https://www.parallax.com/product/28440
我不是很清楚如何做到这一点，因为这是我第一次将硬件设备连接到 USB 端口。
我发现有一个 TComPort 库，我已经在我的 Delphi Berlin 10.1
上安装了它
我从视差文档中发现：
Serial Communication (9600 baud default) Timeout is 100ms
Write to RFID card:
Send ASCII character 'w' to initiate write mode.
Device will respond with 0x01 and will expect 4 bytes of data in return which will be the information entered in
the 'Membership Year' Text box.
Device will respond with 0x02 and will expect 4 bytes of data in return which will be the information entered in
the 'Membership ID' Text box.
Read:
Send ASCII character 'r' to initiate read mode.
Device will send 4 bytes of data (send to Card ID text box) and wait for a 0x01 response.
Device will send a further 4 bytes of data (Membership Year), and wait for a 0x01 response.
Device will send a final 4 bytes of data (Membership ID Number)
这里的问题是，如何使用 TComPort 组件对 write/read 执行这些操作？
通过使用 Windows' CreateFile 调用，您可以直接连接到已连接的 USB 设备。您只需要完整、正确的 'port name'，请参阅 GetPortName 方法 here
我需要 read/write 使用 RFID 的卡片 Reader 更具体地说：
https://www.parallax.com/product/28440
我不是很清楚如何做到这一点，因为这是我第一次将硬件设备连接到 USB 端口。
我发现有一个 TComPort 库，我已经在我的 Delphi Berlin 10.1
上安装了它我从视差文档中发现：
Serial Communication (9600 baud default) Timeout is 100ms
Write to RFID card:
Send ASCII character 'w' to initiate write mode.
Device will respond with 0x01 and will expect 4 bytes of data in return which will be the information entered in the 'Membership Year' Text box.
Device will respond with 0x02 and will expect 4 bytes of data in return which will be the information entered in the 'Membership ID' Text box.
Read:
Send ASCII character 'r' to initiate read mode.
Device will send 4 bytes of data (send to Card ID text box) and wait for a 0x01 response. Device will send a further 4 bytes of data (Membership Year), and wait for a 0x01 response. Device will send a final 4 bytes of data (Membership ID Number)
这里的问题是，如何使用 TComPort 组件对 write/read 执行这些操作？
通过使用 Windows' CreateFile 调用，您可以直接连接到已连接的 USB 设备。您只需要完整、正确的 'port name'，请参阅 GetPortName 方法 here