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1. TTL UART UHF RFID reader module
2. Spruce Board (STM32 Arduino ARM)
3. UHF RFID antenna

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1.Spruce is connected to UHF RFID through 3 lines：
The jump wire connection is as follows:

1. Spruce GPIO pin 40 -> UHF RFID GND
2. Spruce GPIO pin 14 -> UHF RFID RXD
3. Spruce GPIO pin 15 -> UHF RFID TXD.

2. USB line is connected to PC or other USB HOST. It provides 5V power to Spruce (in actual using; you can use the 3V power on UHF-RFID as the working power of Spruce’s)
3. 5V/2A power adaptor provides working power to UHF-RFID.
4. UHF-RFID antenna interface is connected to antenna RFID 902-928MHz.
5.RJ45 is connected to Ethernet interface on PC.

[/vc_column_text][/vc_tab][vc_tab title=”Sample Code” tab_id=”1393270964797-3-0″][vc_column_text]The sample code can be downloaded from github at: https://github.com/linksprite/cottonwood/tree/master/Spruce-RJ45-RFID[/vc_column_text][/vc_tab][vc_tab title=”Environment configuration” tab_id=”1389234274059-2-8″][vc_column_text]1. Configure PC’s IP：

Set TCP/IP protocol at PC.  Manual configuration

IP address ： 192.168.1.1
Subnet mask:255.255.255.0
Default gateway:192.168.1.1
2 . PC communicates with UHF RFID Reader through Ethernet
The TCP IP test tool can be downloaded here usr-tcp232-test
The following is a screen shot of using TCP to read the tag:
1. In NetSetting, do the configuration
Protocol ： TCP Client
Server IP ： 192.168.1.15
Server Port ： 1200
2. Click Connect
3. In the window Network Data receive comes “ Great!  connect success! ”, which means connection is successful.

Tag scanning：

1. Set HEX sending and receiving
2. Input tag scanning command: 43 04 01 cd and click “Send”
3.  Network Data receive window returns the tag ID

By decoding the message, we can see that one tag is found,
Multi-operation command, please see the Uart RFID control commands set

1. TTL UART/USB Long Range UHF RFID reader Module (ISO18000-6C EPC G2) UART Protocol

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