Unit QRCode

Example

Automatic scanning of QR code

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

setScreenColor(0x222222)
qrcode_0 = unit.get(unit.QRCODE, unit.PORTA)

qrcode_0.init_device_mode(0, 0x21)
qrcode_0.set_trigger_mode(0)
qrcode_0.set_manual_scan(1)
while True:
  if qrcode_0.get_qrcode_data_status():
    print(qrcode_0.get_qrcode_data(False))
  wait_ms(2)

API

qrcode_0.init_device_mode(0, 0x21)

• Create a QRCode Unit object

qrcode_0.clear_qrcode_data_status()

• Clear the QRCode Unit trigger flag

print(qrcode_0.get_qrcode_data_status())

• Get the status of automatic or manual trigger mode

print(qrcode_0.get_qrcode_data(False))

• Scan a QR code and retrieve the data as a string

print(qrcode_0.get_qrcode_data_length())

• Scan a QR code and get the available data length

print(qrcode_0.get_device_info(0xFE))

• Obtain firmware version details and I2C address for this device

print(qrcode_0.get_trigger_button_status())

• Get the status of the trigger button

print(qrcode_0.get_trigger_mode())

• (Duplicate) Get the status of automatic or manual trigger mode

qrcode_0.set_device_i2c_address(0x21)

• Allow the user to change the I2C address, which should be between 0x01 and 0x7F

qrcode_0.set_manual_scan(1)

• Set the scanning mode to manual
  • 1: start to disable
  • 0: stop to enable

qrcode_0.set_trigger_mode(0)

• Set the trigger mode to automatic or manual (keys)
  • 0: AUTO
  • 1: MANUAL