Serial Command Tester
Connection Control
Click Connect to select your serial device from the browser's port selection dialog.
Connect
Disconnect
Basic Commands
These commands retrieve basic information from the device: - Firmware information - Version number - Device unique identifier (UID)
Get Firmware
Get Version
Get UID
Clear Screen
Clear a specified rectangular region of the screen. The region is defined by its top-left corner coordinates and dimensions.
left:
Starting column (0-319)
top:
Starting row (0-479)
width:
Rectangle width in pixels
height:
Rectangle height in pixels
Plain Text:
JSON Command:
Clear Screen
Display String
Display text on the screen at a specified position with selected font size.
row:
Starting row (0-319)
column:
Starting column (0-479)
font size:
Available sizes: 8px, 16px, 24px
8px
16px
24px
Plain Text:
JSON Command:
Display Text
Color Controls
Set the foreground and background colors. Colors are automatically converted to 16-bit RGB (5-6-5) format.
color format:
16-bit RGB (5-6-5)
Set Foreground
Plain Text:
JSON Foreground Command:
Set Background
Plain Text:
JSON Background Command:
QR Code
Generate and display a QR code containing specified text at the given position and size.
row:
Top position (0-319)
column:
Left position (0-479)
width:
Size of QR code in pixels
Plain Text:
JSON QR Code Command:
Generate QR
Custom Command
Send a custom command to the device. Use this for testing specific commands or variations.
Send
Communication Log
Displays all commands sent and responses received from the device. Timestamps are included for debugging purposes.
Clear Log