HQCT Driver. - Page 3

FMode · 11-24-2006, 02:55 AM

Linux-guys listen !

Does it help you if my library (.NET) gets the HID pipe-name with libusb32 (.NET library for win32 AND Linux) ?

BTW (and maybe OT) :
Frontends are based IMHO a lot on components (Destinator is a component, ...) which are not available in Linux (?) (COM and ActiveX on windoze)
This currently seems the main disadvantage of Linux to me.
This brings us to the potential of Mono IMHO....

TheLlama · 11-24-2006, 02:10 PM

Quote: Originally Posted by FMode

Linux-guys listen !

Does it help you if my library (.NET) gets the HID pipe-name with libusb32 (.NET library for win32 AND Linux) ?

BTW (and maybe OT) :
Frontends are based IMHO a lot on components (Destinator is a component, ...) which are not available in Linux (?) (COM and ActiveX on windoze)
This currently seems the main disadvantage of Linux to me.
This brings us to the potential of Mono IMHO....

I don't know. Does libusb32 support Linux's usbhid usermode driver? I was originally implemented the hqct driver as a usermode library. I decided to move it to kernel space so that:
A) it can provide a single /dev/hqct device that all applications can use
B) it can be interrupted by the radio. This makes for quicker and less error-prone tuning and seeking
C) I can later add a /proc/hqct to report the status and RDS data
D) it was a great exercise in writing a threaded kernel module.

If your library will work with Linux's usbhid then that would be nice, especially for the people who do not want to load kernel modules or patch their kernel (note, these two options are mutually exclusive). I would imagine this as an alternative driver; not a replacement for my kernel module. One nice thing is, the usbhid usermode driver can use the same API as my driver. The device FD would simply be a /dev/hidXXX instead of a /dev/hqctXXX

FMode · 11-26-2006, 02:00 PM

Did I state that my work is a .NET Assembly !?

So my work is interesting if using MONO under Linux...
It should work under MONO as the used namespaces are "MONO friendly"...

pim · 12-06-2006, 03:05 PM

Quote: Originally Posted by TheLlama

I was originally implemented the hqct driver as a usermode library. I decided to move it to kernel space

I guess I would prefer a usermode library using the usb hid API. Not having to install (kernel) development tools and creating custom kernels would be a great relief. And if the usermode library is the API to use, then it would not matter how it communicates with the kernel.

If you do insist on a kernel driver, why not make it a V4L device, so it adheres to some standard. Not sure if V4L is right for RDS support, though.

Pim

pim · 12-06-2006, 03:07 PM

Quote: Originally Posted by FMode

Did I state that my work is a .NET Assembly !?

So my work is interesting if using MONO under Linux...
It should work under MONO as the used namespaces are "MONO friendly"...

I guess that would only be useful if the frontend itself was written in C#.

Thinking of that, that would be cool, having a frontend that is crossplatform using
Mono.

Pim

TheLlama · 07-10-2007, 08:23 AM

Hey everyone. My beta testers fell of the face of the earth so I haven't really done much with the project. Fortunately, I have some help now and we are going to add RDS support to the project.

Do we still have any betatesters?

waltersaegir · 09-15-2007, 12:33 AM

I have the HQCT and a miniitx board with a T7600 Core2Duo and 4MB RAM etc.

Originally I thought Vista, but I'm ready to switch to Linux.

If you can point me to a distrabution and your code, I'd be interested in beta testing.

ignislupis · 09-15-2007, 10:53 AM

I've been researching the HQCT for a while. I am very interested in an updated driver. I am currently running linux-2.6.22-gentoo-r5 and when I try to compile the source from the file earlier in this thread I get:

Code:

home/fallenangel/hqtc/hqct2/hqct.c:18:26: error: linux/config.h: No such file or directory
/home/fallenangel/hqtc/hqct2/hqct.c: In function 'hqct_recv':
/home/fallenangel/hqtc/hqct2/hqct.c:231: warning: passing argument 6 of 'usb_fill_int_urb' from incompatible pointer type
/home/fallenangel/hqtc/hqct2/hqct.c: In function 'hqct_send':
/home/fallenangel/hqtc/hqct2/hqct.c:397: warning: passing argument 6 of 'usb_fill_int_urb' from incompatible pointer type
make[2]: *** [/home/fallenangel/hqtc/hqct2/hqct.o] Error 1
make[1]: *** [_module_/home/fallenangel/hqtc/hqct2] Error 2
make[1]: Leaving directory `/usr/src/linux-2.6.22-gentoo-r5'
make: *** [hqct.ko] Error 2

I Don't have any hardware yet but I'm planning on going with
- Pico-itx from VIA
- Lilliput 7" Touchscreen
- Amp9 to drive my stock speakers
- HQCT
- M2-ATX

I will probably need to add a USB hub later so I can add GPS, Wireless G, ODB-II (but I might just use the com port for that) and anything else that's cool.

So far, I think I can get really close to getting it all in my double din space.

Anyway back to the driver. I think I might be able to get something working based on your demo.c; but I have no idea about kernel drivers. I came across something about the config.h not being in the new kernel sources, but I don't remember where, and haven't been able to find it again yet.

If you have current code that works well, then I would be glad to help test. But I'm not going to buy the hardware without a pretty good start on a driver.

I think my local radio station (the one I listen to out of only 3 or 4 in my area) recently got RDS hardware. I don't currently have that capability, but I would be willing to help out when I get my stuff.

The HQCT seems to be the most elegant method because I can get it in my dash.

I am ready to start buying next week if I can find everything I need. What you have done looks really good. I hope I can help with it as well as benefit from it.

Thank you.

waltersaegir · 09-26-2007, 01:14 PM

Got Gentoo running on my Mini-ITX board (dual booting w/Win2000).

Need to get more comfortable with Gentoo and understand what the HQCT driver needs for installation and testing.

As I install the HQCT driver, attach my HQCT hardware, and configure Gentoo I will post and update.

I'll reread the posts, but is anyone running this driver. Not too many recient posts.

ignislupis · 09-27-2007, 11:22 PM

I love Gentoo. I hope you do too.

I got the driver to compile and load. I had to comment out the include line for config.h. They removed it from the new kernel sources.

I don't have the hardware to test it with but I don't get any errors when I modprobe it.

waltersaegir · 09-28-2007, 06:41 PM

Sounds good. Had the HQCT radio running under Vista on a Desktop machine until the beta/release candidate expired. After I finish installing GNOME and get the driver to compile and install, I'll boot the board back to win2000 and get the radio running there.

That's likely to be next week.

waltersaegir · 10-04-2007, 12:28 PM

Got the radio to work with Win2000 on the board.

Loaded the Linux software files and rebuilt the driver and Demo test sw.

Running "./demo /dev/hqct0" seems to hang.

Tried "gdb ./demo /dev/hqct" with same result: it never gives a command prompt.

Rebuilt the kernel with "hqct.ko" in the "/etc/modules.autoload.d/kernel-2.6" config file and the physical hqct.ko in the "/lib/modules" directory.

No longer hangs, but no sound. Probably my linux configuration.

Getting messages in system log and prompts on the screen. Seems to exit gracefully.

Going for a little trial-and-error to see what happens. Probably running into my own linux chalanged head.

ignislupis · 10-05-2007, 09:29 PM

As far as I know it doesn't send audio through usb. It has stereo-out on the circuit board. You will need to send this to your amp, speakers, or audio-in on your motherboard or sound card.

Wasn't enough info in your post to know if you were trying usb or the external. If you already knew this then please kindly disregard.

waltersaegir · 10-06-2007, 10:50 AM

I do have a connection from the HQCT board sound-out to my computer board sound-in and I was able to successfully test when I did the Win2000 boot.

I suspect that my Gentoo Linux configuration is not identifying the intel ICH7 (intel8x0) sound driver correctly.

Once I get the sound to perform reliably, I can focus more directly on the HQCT driver and demo software and look at why my /dev/hqct0 disappears at times, between kernel builds. Most of these are Linux configuration issues at this point.

ignislupis · 10-08-2007, 09:33 PM

I've ordered my hardware so I should be getting some stuff in the next week or two. I think the hqct was on backorder so I'll probably have to wait even longer.

I don't know if you are familiar with ALSA or not but I always forget to unmute my soundcard. ALSA installs with mute on by default.

As far as /dev/hqct0 disappearing, I know almost nothing about udev except that I've been lucky and it has just worked for me.

I have also been lucky to find solutions to what ever problems I've had with kernel modules by using google.

I wish you luck and cant' wait for my hardware to arrive.