Sure, this is running on a M5Paper, though I have had something very similar running on a M5Core, This is the small segment of an app written for long rang tag reading at a workshop to track keys and other equipment. I have kept in the tag reading portion. I hope this helps. Some of it is not needed for the reading, just too lazy to remove from the snippet.
from m5stack import * from m5ui import * from uiflow import * import wifiCfg import time import unit import _thread import os import random import urequests from m5stack import touch setScreenColor(15) buzzer_1 = unit.get(unit.BUZZER, unit.PORTB) uhf_rfid_0 = unit.get(unit.UHF_RFID, unit.PORTC) version = 0.89 EPC = None epc_bool = None temp = None tagList = [] TouchCordx = None TouchCordy = None rsense = 2 readerKey = None businessKey = None uhf_rfid_0.set_region(uhf_rfid_0.REGIN_US) uhf_rfid_0.automatic_freq_hopping(0xFF) uhf_rfid_0.set_channel_freq(924.25) epc_bool = 0 uhf_rfid_0.set_select_mode(0x01) print("Beapnow Reader : " + str(version)) print("---") def genKey(length): letters = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ" result_str = ''.join(random.choice(letters) for i in range(length)) return result_str def SetTouchCordenate(): global TouchCordx, TouchCordy print("Setting Touch") TouchCordx, TouchCordy, s, status = touch.read() print(TouchCordx) print(TouchCordy) def uhf_rfid_cb(epc_no, dBm): global EPC, epc_bool, temp EPC = epc_no _ = dBm # label5.setText(str(EPC)) print("2") print("---") pass # while not epc_bool: # epc_bool = uhf_rfid_0.multiple_polling_read(uhf_rfid_cb, 100) # while not (uhf_rfid_0.select_tag_param(EPC)): # pass ssid = None pc = None keyboard = None sett = True sim = True bz = False readerBool = True touchBool = False bzfreq = 500 la = [] ba = [] alphabet = [ "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", ] tu = False ltime = 0 dsc = 0 rr0 = None rr1 = None rr2 = None rr3 = None rr4 = None rr5 = None rr6 = None rr7 = None label0 = M5TextBox(502, 25, "Beapnow Tag Reader", lcd.FONT_DejaVu40, 0, rotate=90) labelVersion = M5TextBox( 460, 30, "version: " + str(version), lcd.FONT_Default, 0, rotate=90 ) circle0 = M5Circle(492, 904, 30, 12, 0) rectangle0 = M5Rect(290, 875, 60, 60, 12, 0) rectangle1 = M5Rect(380, 875, 60, 60, 12, 0) label1 = M5TextBox(334, 815, "Wifi", lcd.FONT_DejaVu24, 0, rotate=90) label2 = M5TextBox(420, 663, "Read Sensitivity", lcd.FONT_DejaVu24, 0, rotate=90) rs2 = M5TextBox(420, 882, "High", lcd.FONT_DejaVu18, 0, rotate=90) label3 = M5TextBox(501, 770, "Wifi off", lcd.FONT_DejaVu24, 0, rotate=90) label9 = M5TextBox(501, 620, "Waiting...", lcd.FONT_DejaVu24, 0, rotate=90) label7 = M5TextBox(512, 892, "", lcd.FONT_DejaVu40, 0, rotate=90) rectangle7 = M5Rect(170, 307, 200, 410, 14, 0) label12 = M5TextBox(334, 322, "Tag #", lcd.FONT_DejaVu40, 0, rotate=90) label13 = M5TextBox(331, 446, "1234567890", lcd.FONT_DejaVu40, 0, rotate=90) label14 = M5TextBox(276, 431, "READ Success", lcd.FONT_DejaVu24, 0, rotate=90) label15 = M5TextBox(227, 461, "Date Time", lcd.FONT_DejaVu24, 0, rotate=90) def touchScreen(): global touchBool, ssid, pc, tu print("Waiting for touch") btty = 6 while True: if touch.status(): print(str(touch.read())) wait_ms(5) def reader(): global bz, dsc, ltime, readerBool,rsense temp = 0 count = 0 clean = 0 print("Waiting for RFID") print("sensitivity = "+str(rsense)) while True: ltime += 1 # while not temp: temp = uhf_rfid_0.single_polling() if temp: label13.setText(str(temp[0])) print("-----") print(temp[0]) print(temp[1]) print("-----") count += 1 lcd.show() wait_ms(2) def file_exists(filename): try: return (os.stat(filename)[0] & 0x4000) == 0 except OSError: return False def readSense(): global rsense print("changing rsense") if rsense == 2: rsense = 5 rs2.setText("Low") else: rsense = 2 rs2.setText("High") lcd.partial_show(370, 875, 60, 60) def checkConfig(): # some check here return True def startTime(): print("START TIME") # time = 0 # loop = True # while loop: # if time > 29: # logTags() # loop = False # time += 1 # print(time) # wait(.95) label13.setText("") ssid = "" pc = "" lcd.show() _thread.start_new_thread(touchScreen, ()) if checkConfig(): _thread.start_new_thread(reader, ()) print("Ready for tags") else: print("waiting for register")