Hi Norman, thank you for the fast and detailed response (and the interesting idea :) ).
Best regards Daniel -- Daniel Krefft MSc. Wissenschaftlicher Mitarbeiter Technische Universitaet Muenchen Fakultaet fuer Informatik Lehrstuhl fuer Betriebssysteme Arcisstrasse 21 80333 Muenchen Tel. +49 89 289 18791 daniel.kre...@tum.de www.os.in.tum.de/personen/krefft ________________________________________ Von: Norman Feske <norman.fe...@genode-labs.com> Gesendet: Mittwoch, 6. Juli 2016 08:56 An: genode-main@lists.sourceforge.net Betreff: Re: Genode/Linux USB Application Hi Daniel, > Next, I want to use it with Linux as kernel (linux_x86). If I try to run > the resulting application, the usb_drv component throws the following error: > >> no route to service "Platform" > > So, is it possible to compile and run the intended application without > modifications? > > If I want to use the linux devices (e.g. usb), who can I achieve this in > code? on base-linux, the USB driver resides in the Linux kernel. Genode's usb_drv cannot be used. However, your 'ServoController' doesn't actually need a USB driver but merely a terminal session. Your scenario relies on the usb_drv + usb_terminal in this respect. On Linux, I would use a completely different terminal service. The best approach would be to have a Genode component - let's call it lx_terminal - that opens a character device on Linux and provides a terminal service by forwarding all 'read' and 'write' operations to the Linux device. This component could then be used with any arbitrary Linux device, on particular your USB-serial device that would normally appear at /dev/ttyUSB0. The resulting picture would look like this: ServoController --------------------------------- lx_terminal | -------.-----------' | | Genode -------V------------------------- /dev/ttyUSB0 Linux kernel --------------------------------- Hardware Unfortunately, the lx_terminal component does not exist yet. But similar components for other Genode services exist, which you could use blue print: * os/src/drivers/nic/spec/linux/ (provides a NIC session via a Linux tap device) * os/src/server/lx_fs/ (provides a file-system session by accessing the Linux file system) * os/src/drivers/framebuffer/spec/sdl (provides a framebuffer and input session via libSDL) * os/src/drivers/audio/spec/linux (provides an audio-out session via ALSA) Actually, when looking at this list, it might be even possible to emulate the lx_terminal component by combining the lx_fs with the file_terminal component (gems/src/server/file_terminal). But a dedicated lx_terminal component would certainly be nicer. Cheers Norman PS: In principle, it would be interesting to use Genode's device drivers on top of the Linux kernel by facilitating Linux' user-level device-driver infrastructure. This would clear the way to run your entire scenario including the USB driver on Linux. We have briefly documented this idea of "microkernelizing Linux" at http://genode.org/about/challenges#Platforms -- Dr.-Ing. Norman Feske Genode Labs http://www.genode-labs.com · http://genode.org Genode Labs GmbH · Amtsgericht Dresden · HRB 28424 · Sitz Dresden Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth ------------------------------------------------------------------------------ Attend Shape: An AT&T Tech Expo July 15-16. Meet us at AT&T Park in San Francisco, CA to explore cutting-edge tech and listen to tech luminaries present their vision of the future. This family event has something for everyone, including kids. Get more information and register today. http://sdm.link/attshape _______________________________________________ genode-main mailing list genode-main@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/genode-main ------------------------------------------------------------------------------ Attend Shape: An AT&T Tech Expo July 15-16. Meet us at AT&T Park in San Francisco, CA to explore cutting-edge tech and listen to tech luminaries present their vision of the future. This family event has something for everyone, including kids. Get more information and register today. http://sdm.link/attshape _______________________________________________ genode-main mailing list genode-main@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/genode-main