qrcode- QR Code Display

2025-08-07

Feature introduction: generate a corresponding QR code according to the input content.

Display QR Code

qrcode.show 

qrcode.show(qrcode_str,magnification,start_x,start_y,Background_color,Foreground_color,Rotate)

Displays QR codes to LCD.

Parameter：

  • qrcode_str - String type. QR code content.
  • magnification - Integer type. Magnification. Range: 1–6.
  • start_x - Integer type. The start x coordinate of the displayed QR code.
  • start_y - Integer type. The start y coordinate of the displayed QR code.
  • Background_color - Integer type. Background color. Default value: 0xffff.
  • Foreground_color - Integer type. Foreground color. Default value: 0x0000.
  • Rotate - Integer type. Rotation angle. Reference Constant . Default value: 0.

Return Value:

0 - Successful execution

-1 - QR code generation failed

-2 - Magnification failed

-3 - Display failed

Generation QR Code Data

qrcode.getQRData 

qrcode.getQRData(qrcode_str,magnification,Background_color,Foreground_color)

Generation QR code and retrieve data.

Parameter：

  • qrcode_str - String type. QR code content.
  • magnification - Integer type. Magnification. Range: 1–6.
  • Background_color - Integer type. Background color. Default value: 0xffff.
  • Foreground_color - Integer type. Foreground color. Default value: 0x0000.

Return Value:

-1 - QR code generation failed

Return tuple upon success (side_length, data)

  • side_length : Side length of QR code.
  • data : Data of QR code.

Constant

Constant Value Description
qrcode.ROTATE_0 0 QR code display without rotation
qrcode.ROTATE_90 1 Rotate the QR code clockwise by 90 degrees to display
qrcode.ROTATE_180 2 Rotate the QR code clockwise by 180 degrees to display
qrcode.ROTATE_270 3 Rotate the QR code clockwise by 270 degrees to display