I'm developing an Android application that communicates with a USB device, printer, Arduino, or other Android device.
Is it possible to read and write to Android's USB port? How do I proceed with the drivers? Does Android have libraries to work with USB devices? I've heard of a project called FTDI Chip to communicate with a USB device, am I on the right track?
There is a project on GitHub usb-serial-for-android
It's a library for communicating with Arduinos and other USB devices on Android using the Android USB Host API (Android 3.1+)
You do not need root access because you implement the drives in Java itself, which provides an api for Android to read and write to USB.
Code snippet, see more in the sample project ( link )
// Encontra o UsbManager do Android.
UsbManager manager = (UsbManager) getSystemService(Context.USB_SERVICE);
// Encontra o primeiro Driver disponivel.
UsbSerialDriver driver = UsbSerialProber.acquire(manager);
if (driver != null) {
driver.open();
try {
driver.setBaudRate(115200);
byte buffer[] = new byte[16];
int numBytesRead = driver.read(buffer, 1000);
Log.d(TAG, "Read " + numBytesRead + " bytes.");
} catch (IOException e) {
// Deal with error.
} finally {
driver.close();
}
}
All are not flowers, as the project is still in version v0.1.0 and the last time it was updated was in 2012. At least the project is well documented.
I hope I have helped you.