@Pagano, Patrick Grim!! That was the next one I was about to try
Have you guys seen this http://createdigitalmusic.com/2013/07/roll-your-own-looper-cheap-raspberry-pi-pd-korg-monotron-hands-on/ Its at least a proof of concept but he has given no information about what hardware he has used. I'll keep hunting and keep you guys informed On Sat, Jul 27, 2013 at 7:22 PM, John Canning <[email protected]>wrote: > Hi Martin, > > I thought about this but since the Pi boots with the soundcard plugged in > at USB 2 speed I reckon that this is not the issue. That said, I am using > an iPhone charger that only outputs 1 amp. I will try it with another one > as soon as I can but that won't be for a few days at least. I'll keep you > informed. > > John > > > On Sat, Jul 27, 2013 at 3:36 PM, Martin Peach > <[email protected]>wrote: > >> Maybe your power supply can't handle the load? 2 Amps regulated 5V is >> good, 1 Amp might not do it. >> >> Martin >> >> >> On 2013-07-27 05:51, John Canning wrote: >> >>> Hi Dan, >>> >>> I have done some more hunting around and on the Pd FrontPage site it >>> says that my Behringer soundcard has been proven to work with the >>> Raspberry Pi with reduced USB speed and I have found some posts that say >>> they have it running in full duplex. What I get is something like this >>> when I have the sound card plugged in on boot >>> >>> [ 2.469784] usb 1-1.3: new high-speed USB device number 4 using >>> dwc_otg >>> [ 2.571518] usb 1-1.3: New USB device found, idVendor=05e3, >>> idProduct=0608 >>> [ 2.571545] usb 1-1.3: New USB device strings: Mfr=0, Product=1, >>> SerialNumber=0 >>> [ 2.571562] usb 1-1.3: Product: USB2.0 Hub >>> [ 2.573135] hub 1-1.3:1.0: USB hub found >>> [ 2.573640] hub 1-1.3:1.0: 4 ports detected >>> [ 2.849881] usb 1-1.3.4: new full-speed USB device number 5 using >>> dwc_otg >>> [ 2.953034] usb 1-1.3.4: New USB device found, idVendor=08bb, >>> idProduct=2704 >>> [ 2.953064] usb 1-1.3.4: New USB device strings: Mfr=1, Product=2, >>> SerialNumber=0 >>> [ 2.953081] usb 1-1.3.4: Product: USB Audio DAC >>> [ 2.953096] usb 1-1.3.4: Manufacturer: Burr-Brown from TI >>> [ 2.958781] input: Burr-Brown from TI USB Audio DAC >>> as /devices/platform/bcm2708_usb/**usb1/1-1/1-1.3/1-1.3.4/1-1.3.** >>> 4:1.2/input/input0 >>> [ 2.960263] hid-generic 0003:08BB:2704.0001: input,hidraw0: USB HID >>> v1.00 Device [Burr-Brown from TI USB Audio DAC ] on >>> usb-bcm2708_usb-1.3.4/input2 >>> >>> and it just hangs there. This is with nothing else plugged in to the >>> PI. Without the lowered USB speed I get so many dropouts that it is >>> completely unusable. I'm sorry to keep harping on about the same thing >>> but as with all of these things you find a little nugget that gives you >>> hope (and another and another). The videos that I have seen like this >>> >>> http://hackaday.com/2013/01/**28/raspberry-pi-becomes-a-** >>> guitar-effects-processor/<http://hackaday.com/2013/01/28/raspberry-pi-becomes-a-guitar-effects-processor/> >>> >>> are pretty much what I'm looking for. Imperceptible/minimal dropouts and >>> decent FX. Can you or anyone tell me why I can't even boot the Pi with >>> the (previously community tested) soundcard plugged in running at USB 1 >>> speed? Or why if I plug it in after booting I crash the Pi? >>> >>> This post >>> >>> http://lists.puredata.info/**pipermail/pd-list/2013-01/**100560.html<http://lists.puredata.info/pipermail/pd-list/2013-01/100560.html> >>> >>> and others in the same thread are what started me on this mission so if >>> any of the contributors to it could tell me how they have got this up >>> and running I would eternally grateful >>> >>> Thanks again, >>> John >>> >>> >>> On Sat, Jul 27, 2013 at 12:26 AM, Dan Wilcox <[email protected] >>> <mailto:[email protected]>> wrote: >>> >>> For what it's worth, I tried force ing USB 1.1 mode on the pi with >>> my UA-25 and that resulted in a hard lock as well. Disappointing at >>> this point since I've worked with audio on slower embedded machines >>> before ... >>> >>> On Jul 26, 2013, at 7:19 PM, John Canning >>> <[email protected] >>> <mailto:johnnyboy7777@hotmail.**co.uk<[email protected]> >>> >> >>> wrote: >>> >>> Thanks for getting back to me Dan >>>> >>>> >>>> On Fri, Jul 26, 2013 at 11:50 PM, Dan Wilcox <[email protected] >>>> <mailto:[email protected]>> wrote: >>>> >>>> Actually I miss-typed. The issue is with "Isochronous" usb >>>> mode: >>>> http://www.raspberrypi.org/**phpBB3/viewtopic.php?f=28&t=** >>>> 29226 <http://www.raspberrypi.org/phpBB3/viewtopic.php?f=28&t=29226>Looks >>>> like things should be better for USB 2 audio devices, but >>>> still issues with USB 1.1 devices (aka mine :P): >>>> >>>> While Isoc has improved for pretty much everyone using USB2.0 >>>>> devices (USB1.1 will still suffer from lost packets due to >>>>> split transaction breakage noted elsewhere) I'm still annoyed >>>>> at my webcams "kinda working" - I get 1-2 seconds of >>>>> uninterrupted video and then a half-garbled frame. >>>>> >>>> >>>> >>>> On Jul 26, 2013, at 6:35 PM, Dan Wilcox <[email protected] >>>> <mailto:[email protected]>> wrote: >>>> >>>> Sure, but that's only for certain types of USB devices. Some >>>>> are working and others aren't. More "professional" sound >>>>> cards require lower-latency/burst mode over USB which the PI >>>>> firmware currently doesn't allow and/or doesn't set the >>>>> correct priority for. The issue AFAICT is that essentially >>>>> the usb host is software defined on the SOC and they haven't >>>>> optimized it for usb audio, or something like that. >>>>> >>>>> For instance, I can get stereo out in Pd working fine with my >>>>> Edirol UA-25 . If I enable an audio input, I get instant >>>>> dropouts. Yeah, I guess it "works", but not well enough for me. >>>>> >>>>> On Jul 26, 2013, at 6:27 PM, John Canning >>>>> <[email protected] >>>>> >>>>> <mailto:johnnyboy7777@hotmail.**co.uk<[email protected]>>> >>>>> wrote: >>>>> >>>>> Hi Dan, >>>>>> >>>>>> Thanks for getting back to me. I'm still very new to the Pi >>>>>> but have found this post that seems to say that it can work. >>>>>> I'm confused. What do you reckon? >>>>>> >>>>>> >>>>>> On Fri, Jul 26, 2013 at 11:02 PM, Dan Wilcox >>>>>> <[email protected] <mailto:[email protected]>> wrote: >>>>>> >>>>>> Simply put, the RPI firmware does not work with USB >>>>>> audio correctly yet. See this thread: >>>>>> http://lists.puredata.info/**pipermail/pd-list/2013-07/** >>>>>> 103261.html<http://lists.puredata.info/pipermail/pd-list/2013-07/103261.html> >>>>>> >>>>>> I keep looking for fixes, but the way USB is handled, >>>>>> the only way for it to work without dropouts is to have >>>>>> *nothing* else plugged into the usb bus and ethernet >>>>>> disabled ... sucks. >>>>>> >>>>>> On Jul 26, 2013, at 5:41 PM, [email protected] >>>>>> <mailto:[email protected]**> wrote: >>>>>> >>>>>> *From:*John Canning <[email protected] >>>>>>> >>>>>>> <mailto:johnnyboy7777@hotmail.**co.uk<[email protected]> >>>>>>> >> >>>>>>> *Subject:**[PD] Raspberry Pi Behringer UCA222 boot >>>>>>> problems* >>>>>>> *Date:*July 26, 2013 5:40:49 PM EDT >>>>>>> *To:*Pure Data <[email protected] <mailto:[email protected]>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> Hi Folks, >>>>>>> >>>>>>> I have been trying for quite a while to get my >>>>>>> Raspberry Pi to work in full duplex with Pd. I have >>>>>>> installed the OS on the PdPi site and updated it. I am >>>>>>> using a Behringer UCA222 for audio. When I change the >>>>>>> USB speed down to 1 (dwc_otg.speed=1) in >>>>>>> /boot/cmdline.txt my Pi won't boot with the soundcard >>>>>>> plugged in. If I unplug the soundcard the Pi will boot >>>>>>> but as soon as I plug it in the Pi crashes. Has anyone >>>>>>> got any suggestions about why this is happening? >>>>>>> >>>>>>> Thanks, >>>>>>> John >>>>>>> >>>>>> >>>>>> -------- >>>>>> Dan Wilcox >>>>>> @danomatika >>>>>> danomatika.com <http://danomatika.com/> >>>>>> robotcowboy.com <http://robotcowboy.com/> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>> -------- >>>>> Dan Wilcox >>>>> @danomatika >>>>> danomatika.com <http://danomatika.com/> >>>>> robotcowboy.com <http://robotcowboy.com/> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>> -------- >>>> Dan Wilcox >>>> @danomatika >>>> danomatika.com <http://danomatika.com/> >>>> robotcowboy.com <http://robotcowboy.com/> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>> -------- >>> Dan Wilcox >>> @danomatika >>> danomatika.com <http://danomatika.com> >>> robotcowboy.com <http://robotcowboy.com> >>> >>> >>> >>> >>> >>> >>> >>> >>> ______________________________**_________________ >>> [email protected] mailing list >>> UNSUBSCRIBE and account-management -> http://lists.puredata.info/** >>> listinfo/pd-list <http://lists.puredata.info/listinfo/pd-list> >>> >>> >> >
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