ComPort for Android USB

Delphi and C++Builder serial communication library for USB-connected devices on Android.

utilizes usb-serial-for-android library
supports
FTDI: FT232R, FT232H, FT2232H, FT4232H, FT230X, FT231X, FT234XD
Prolific: PL2303
Silabs: CP2102, CP210*
Qinheng: CH340, CH341A, CH9102
CDC/ACM protocol (Arduino, Digispark, BBC micro:bit, ...)
GsmModem devices (Unisoc-based Fibocom GSM modems)
Chrome OS CCD (Closed Case Debugging)
no special root access privileges needed
available for Delphi/C++Builder versions 10.4 - 12
source code included in registered version
royalty-free distribution in applications

Download ComPort for Android USB 6.1 trial version

Download demo example

Order ComPort for Android USB license $120 USD (license for one developer)

Order ComPort for Android USB multi-license $360 USD (license for all developers in company)

Order ComPort for Android USB year upgrades $60 USD (registered users only)

Order ComPort for Android USB year upgrades multi-license $180 USD (registered multi-license users only)

Order Winsoft Component Package

FAQ

What files should be deployed to the Android device?

Add this file in the Delphi Deployment window:
Local Name: device_filter.xml
Remote Path: res\xml\

Add these lines to the AndroidManifest.template.xml file:

<intent-filter>
  <action android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED" />
</intent-filter>

<meta-data android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED" android:resource="@xml/device_filter" />

How can I determine the chip used in a USB/RS232 adapter?

Use HWiNFO on a PC and the USB Library for Android demo example on an Android device.

How can I use a custom USB device?

const
  CustomDevice: TCustomDevice = (Driver: TDriver.CdcAcm; VendorID: 7438; ProductID: 41477);
begin
  UsbSerial := TUsbSerial.Create;
  UsbSerial.CustomDevices := [CustomDevice];
  ...
end;