I'm working over sketch uploading from Android device to Arduino board and it works for Duemilanove (FTDI-based) and Uno (ATMega-based) when testing for pc/arduino using rxtx (pure java).
But it does not work if using usb-android lib (https://code.google.com/p/usb-serial-for-android/
) as setDTR/setRTS methods are not implemented yet.
FTDI android drivers (http://www.ftdichip.com/Android.htm
) allow to send setDTR/setRTS signals but fail to send/read data after it.
So the problem is in USB API and i can't figure out what's wrong..
Does anybody know what happens for FTDI-based arduino boards after DTR/RTS are toggled?
I belive that device is reset and wait for bootloader commands (stk500) for ~50-250 ms. Am i right?