Re: [avrdude-dev] “Not a typewriter” avrdude err or on Android

[Anton Smirnov]

2013/6/11 Joerg Wunsch <address@hidden>

> As Anton Smirnov wrote:
>
> > /dev/bus/usb devices cannot be used directly for STK500v2.
> >
> > All this relates to Android. I'm not using file path (see above), but
> file
> > descriptor passed from android app.
>
> But how is that file descriptor obtained, i.e. which pathname has
> been provided to open() initially?
>

No, file descriptor is returned from android app for native code specially
and open() is not invoked at all.
Please read the whole email chain to get detailed information.


>
> You write about libusb: no, sorry, that's not the way to go for
> STK500v2.  It *requires* a plain old serial port, be it physical
> (RS-232), or virtual (emulated by a driver).  Just opening an USB
> device simply doesn't work.  (It would work for other programmer
> types, like JTAGICEmkII, AVRISPmkII etc.)
>

Okay, i catched that. But i'd like to try if it works for stk500v1 at least,
as most arduino boards are uno r3 IMHO.


> Only the underlying driver knows how to e.g. talk to the serial
> emulation device at the other end of the USB in order to adjust
> baudrates, control signals etc.
>

Okay, so now the question is what is this file descriptor and how can it be
used
in native code. Even Android seems to be not documented enough..


> --
> cheers, Joerg               .-.-.   --... ...--   -.. .  DL8DTL
>
> http://www.sax.de/~joerg/
> Never trust an operating system you don't have sources for. ;-)
>
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