Setting up RFID reader.
The Senor sample RFID reader we have came with the iSPOS series of touch screen computers. In these systems the com ports are set up as follows:
- Com1: Integrated Customer display
- Com2: Touch screen
- Com3: RFID Reader
- Com4: Available for use
- Com5: Integrated 40 Column docket printer
- Com6: Available for use
Since in Linux the default kernel behavior is to only support 4 serial ports, we have set up the following:
- /dev/ttyS0 Integrated Customer display
- /dev/ttyS1 Touch screen
- /dev/ttyS2 Integrated 40 Column docket printer
- /dev/ttyS3 RFID Reader
In order to communicate with the RFID reader, we need to send it an initialise command (this will cause the device to beep):
send 01 03 response 01 01 send 01 03 response 01 01 send 02 0b 0f response 01 00
Once the device is initialised you need to continously poll the device with the Search Card command:
send 02 02 26
You will get one of the following responses:
Detected a S50 type tag
response 03 00 04 00
Detected a S70 type tag
response 03 00 02 00
No card detected
response 01 01
If you detected a tag, you need to send it an Anticollision command to read its serial number:
send 01 03 response 05 00 52 00 75 7A
05 00 52 00 75 7A is the tag serial number. If you get 01 01 that means the tag was taken off before we could read it. We will capture this serial number and assign it to an operator.