It shows the same light switching as is already implemented:
grep -n ": 19" USB224_usbsnoop1.log
gives us pre INPUT MONITOR pressed
21501: 00000000: 19 00 1a 00 1b 00 1c 00 1d 11 1e 00 1f 00
and post
21941: 00000000: 19 00 1a 00 1b 00 1c 02 1d 01 1e 00 1f 00
the 8th byte changing from 0 to 2 is the actual INPUT MONITOR Led switch on.
see us428control:
void us428_lights::init_us428_lights()
void us428_lights::LightSet(eLight L, bool Value)
with
enum eLight{
eL_InputMonitor = 25
};
the same urb as in the log should be sent to the us224 on linux.
for the us428 it works. not for the us224.
So please try the following patch:
>>>
--- alsa-driver/usb/usx2y/usbusx2yaudio.c 30 Mar 2004 08:27:16 -0000 1.9
+++ alsa-driver/usb/usx2y/usbusx2yaudio.c 2 Apr 2004 11:55:21 -0000
@@ -1245,7 +1245,7 @@
snd_dma_continuous_data(GFP_KERNEL),
usX2Y_capt_substream->endpoints *
64*1024,
usX2Y_capt_substream->endpoints *
128*1024)) ||
- (usX2Y(card)->chip.dev->descriptor.idProduct == USB_ID_US428 &&
+ (usX2Y(card)->chip.dev->descriptor.idProduct != USB_ID_US122 &&
0 > (err = usX2Y_rate_set(usX2Y_stream, 44100)))) { // Lets us428
recognize output-volume settings, disturbs us122.
snd_usX2Y_audio_stream_free(usX2Y_stream);
return err;
<<<
if the us428 doesn't get the "usX2Y_rate_set(usX2Y_stream, 44100)" at startup,
it later behaves ignorant to light & volume setting. like us224 behaves now.
If we get the INPUT MONITOR Led enlightened, the Volume settings should also
work with respect to direct monitoring at least.
US224 Master Fader seams to b where US428's Fader5 is. That needs adjustment
in us428control.
The data sent to set us224 internal mixers is filtered out with
grep -n "00: 0[0123456789] .. .. .. ..$" USB224_usbsnoop1.log
it gives i. e.:
11721: 00000000: 00 00 25 00 25
11732: 00000000: 01 00 25 00 25
11743: 00000000: 02 00 25 00 25
11754: 00000000: 03 00 25 00 25
11831: 00000000: 04 00 42 00 42
look at struct usX2Y_volume and its methods. it should fit the us224.
But lets get that Leds enlighted first :-)
Cheers,
Karsten
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