Unit RFID-UHF

Example

Realize the complete process of label reading and data locking

from m5stack import *
from m5ui import *
from uiflow import *
import unit

setScreenColor(0x222222)
uhf_rfid_0 = unit.get(unit.UHF_RFID, unit.PORTC)

epc_no = None

uhf_rfid_0.set_region(uhf_rfid_0.REGIN_CN_800MHZ)
uhf_rfid_0.automatic_freq_hopping(0x00)
print(uhf_rfid_0.get_region())
print(uhf_rfid_0.get_channel_freq())
epc_no = 0
while not epc_no:
  epc_no = uhf_rfid_0.single_polling()
print(epc_no)
while not (uhf_rfid_0.select_tag_param(epc_no)):
  pass
print(uhf_rfid_0.get_select_tag_param())
epc_no = 0
while not epc_no:
  epc_no = uhf_rfid_0.read_memory_bank(2, 2, 0x00, 'FFFF3333')
print(epc_no[0])
print(epc_no[1])
epc_no = 0
while not epc_no:
  epc_no = uhf_rfid_0.lock_data_store(0, 2, 2, 0, 0, 0, 1, 1, 0, 0, 'FFFF3333')
print('Lock Success') 

API

uhf_rfid_0.uart_port_id(1)

UART Interface Initialization

uhf_rfid_0.automatic_freq_hopping(0xFF)

Module Automatic Frequency Hopping

print((str('freq:') + str((uhf_rfid_0.get_channel_freq())))) 

Get Module Channel Frequency

print((str('info:') + str((uhf_rfid_0.get_device_info(0x00))))) 

Get Module Device Information

print((str('code:') + str((uhf_rfid_0.get_region())))) 

Get Module Operating Region

print((str('tag:') + str((uhf_rfid_0.get_select_tag_param())))) 

Get Module Card Selection Parameters

print((str('tx:') + str((uhf_rfid_0.get_tx_power())))) 

Get Module Transmit Power

print(uhf_rfid_0.lock_data_store(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, '')) 

Lock Module Data Storage Area

uhf_rfid_0.multiple_polling_stop()

Stop Module Multi-Tag Polling

def uhf_rfid_eQuAncb(epc_no, dBm):
  global EPC1, dBm1
  EPC1 = epc_no
  dBm1 = dBm
  pass


print(uhf_rfid_0.multiple_polling_read(uhf_rfid_eQuAncb, 100)) 

Module Multi-Tag Read Count

print(uhf_rfid_0.read_memory_bank(0, 0, 0x00, '')) 

Read Module Memory Data

uhf_rfid_0.set_channel_freq(920.375)

Set Module Channel Frequency

uhf_rfid_0.set_region(uhf_rfid_0.REGIN_CN_900MHZ)

Set Module Operating Region

uhf_rfid_0.set_select_mode(0x00)

Set Module Card Selection Mode

print((str('param:') + str((uhf_rfid_0.select_tag_param('EPC'))))) 

Set Module Card Selection

uhf_rfid_0.set_tx_power(0)

Set Module Transmit Power

print((str('reading:') + str((uhf_rfid_0.single_polling())))) 

Module Single-Tag Polling

uhf_rfid_0.sleep()

Module Enter Sleep Mode

uhf_rfid_0.wakeup()

Wake Up Module

print((str('list:') + str((uhf_rfid_0.write_customer_command([0, 0, 0], True))))) 

Write Custom Command to Module

print(uhf_rfid_0.write_memory_bank('', 0, 0x00, '')) 

Write Data to Module Memory

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