I'm not clear on what you're trying to do. Are you trying to get a phone to talk to an Arduino, or are you trying to replace the Arduino with a phone?
Phone USB ports aren't generally set up to act as hosts, but as devices. Supposedly some phone USB ports are hardware capable of doing so, but I don't know the magic, nor do I recall which phones. That may not be a barrier; you may be able to set the Arduino up as host. At a minimum, you'll need to get root access on your phone, and probably need to use the NDK to write some C++ code to bridge between Java and actually talking to the hardware. I've got a couple different types of Arduinos around here with USB -- one with it on the board, another, smaller one with it as an adapter you can connect to the output pins. I don't know if that solves any problems for you -- but at least the adapter would save you from dealing with the electrical interface aspects, and the USB bus protocol aspects. The latter would probably render your plan unfeasible, I think. I note that the USB adapter board has a tiny surface-mount chip on it that has about as many pins as the Arduino chip! The USB adapter wasn't very expensive. I could dig up the specific parts and sources, but you're probably better off googling and choosing what best fits your needs. On Mar 10, 7:11 pm, joshbeck <[email protected]> wrote: > I've got a fairly unique situation: > -I'm a teacher with a magnet school that focuses on rocketry and > technology. > -I've got a rocket payload that has a video overlay board which > does the following: > -Takes input from a camera. > -Takes input from a serial data line. > -Overlays the text input to the video screen in > real time and saves to avi. > > -Right now we're using this antiquated device called an Arduino > board which > is cave man stuff compared to the developer phones we have on > campus. > (It's very educational making one work, but still old hardware.) > > -The Arduino processor essentially outputs data to a 'transmit' > pin that can > be easily hooked up to a pc serial port. (Serial Data.) > > -My present course of inquiry: (I'm a fairly proficient Android > developer) > > -------------------------------------- > -Can I write a program that outputs a simple string like > this directly to the usb data cable: > String aString = "abc"; > --------------------------------------- > -From there, would it be possible to purchase a usb > to serial converter and > grab the associated data off the correct serial pin? > > -I'm not an electrical engineer by any means, but I think that a > serial > converter would have to boost the voltage from the USB line > in order to work because usb voltages are lower than what > comes straight out the serial port. > -Does this sound like a correct assumption? > > -Any advice is appreciated. We'd love to launch a smart phone at > our next competition. > > Thanks in advance > Josh Beck > Northeast ISD > KSAT/iMAK at Krueger Middle School > (Launching Android in rockets is fun!) -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
