diSPP: Bluetooth Serial

diSPP (formerly DSD TECH SPP) is a Bluetooth serial terminal for devices that support classic Bluetooth SPP. Use it to send commands, inspect received data and manage the devices you work with.

SEND AND RECEIVE
• View received data as text or hexadecimal bytes.
• Send UTF-8 text or hexadecimal data.
• Choose no line ending, CR, LF or CRLF for text commands.
• Repeat a command at a chosen interval and stop it when needed.

REUSE YOUR COMMANDS
• Restore successfully sent commands from history without sending them immediately.
• Keep frequently used commands as favorites and pin entries for quick access.
• Review a command before sending it to the connected device.

ORGANIZE DEVICES
• Scan for nearby devices and keep saved devices in My devices.
• Set local aliases to make devices easier to recognize in the list and Data header.
• Mark unrelated devices to hide them from the nearby list.
• Manage saved unrelated marks even when a device has not appeared in the current scan.
• Remove a mark without automatically adding or connecting the device.

ADJUST THE DISPLAY
• Turn receive timestamps and automatic scrolling on or off.
• Keep the screen awake while the connected communication page is in the foreground.
• View scan signal strength when a current sample is available.

COMPATIBILITY
The connected device must support classic Bluetooth SPP. BLE-only devices are not supported. Pairing, adding a device to My devices and connecting are separate actions. Bluetooth permissions are required; older Android versions may also require location permission for scanning.

Aliases, command history and settings are stored locally by the app. A successful send means the data was written to the Bluetooth connection; it does not confirm that the remote device executed the command.