39 lines
1.9 KiB
Python
39 lines
1.9 KiB
Python
#!/usr/bin/env python
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# Minimal example to peform a single tag inventory. Shows examples of serial or TCP/IP
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# communication with a reader.
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#
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# For readers that support RSSI values returned with the tags (e.g. fixed reader series or UHF
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# modules), comment out the get_inventory_uhfreader18 command and G2InventoryResponseFrame18
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# format, and instead use the lines immediately preceding them (get_inventory_288 and
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# G2InventoryResponseFrame288)
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from chafon_rfid.base import CommandRunner, ReaderCommand, ReaderInfoFrame
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from chafon_rfid.command import CF_GET_READER_INFO, G2_TAG_INVENTORY
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from chafon_rfid.response import G2_TAG_INVENTORY_STATUS_MORE_FRAMES
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from chafon_rfid.transport import TcpTransport, MockTransport
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from chafon_rfid.transport_serial import SerialTransport
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from chafon_rfid.uhfreader18 import G2InventoryResponseFrame as G2InventoryResponseFrame18
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from chafon_rfid.uhfreader288m import G2InventoryCommand, G2InventoryResponseFrame as G2InventoryResponseFrame288
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get_reader_info = ReaderCommand(CF_GET_READER_INFO)
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get_inventory_288 = G2InventoryCommand(q_value=4, antenna=0x80)
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get_inventory_uhfreader18 = ReaderCommand(G2_TAG_INVENTORY)
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transport = SerialTransport(device='/dev/ttyUSB0')
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#transport = TcpTransport(reader_addr='192.168.0.250', reader_port=27011)
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#transport = TcpTransport(reader_addr='192.168.1.190', reader_port=6000)
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runner = CommandRunner(transport)
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#transport.write(get_inventory_288.serialize())
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transport.write(get_inventory_uhfreader18.serialize())
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inventory_status = None
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while inventory_status is None or inventory_status == G2_TAG_INVENTORY_STATUS_MORE_FRAMES:
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#g2_response = G2InventoryResponseFrame288(transport.read_frame())
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g2_response = G2InventoryResponseFrame18(transport.read_frame())
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inventory_status = g2_response.result_status
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for tag in g2_response.get_tag():
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print('Antenna %d: EPC %s, RSSI %s' % (tag.antenna_num, tag.epc.hex(), tag.rssi))
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transport.close()
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