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  • ubiubu's Avatar
    09-08-2018, 06:50 AM
    As Theremingenieur say, chances are that you'll have to write it. No SPI devices are supported at this point and I guess one reason is that SPI isn't generalized as easily as I2S, because there's no separate data stream...
    3 replies | 227 view(s)
  • ubiubu's Avatar
    08-28-2018, 09:34 PM
    ubiubu replied to a thread CS4272 issues in Audio Projects
    PS. sorry, was a bit in a rush earlier and realize my answer wasn't particularly precise. What I meant is I'm using the official/Apple "Lightning to USB Camera Adapter", which works with USB devices, at least some (like...
    14 replies | 758 view(s)
  • ubiubu's Avatar
    08-28-2018, 11:55 AM
    ubiubu replied to a thread CS4272 issues in Audio Projects
    Not sure, I think it's the same: the official name is "Lightning to USB Camera Adapter".
    14 replies | 758 view(s)
  • ubiubu's Avatar
    08-28-2018, 10:47 AM
    ubiubu replied to a thread CS4272 issues in Audio Projects
    I'm still getting "Cannot use device" (that is, after changing the two defines in usb_desc.h for USB_AUDIO, that's all it takes, right?; I've also changed the product name for good measure by including <usb_names.h>)....
    14 replies | 758 view(s)
  • ubiubu's Avatar
    08-28-2018, 06:24 AM
    ubiubu replied to a thread CS4272 issues in Audio Projects
    ps. so I've googled around a bit, and editing bMaxPower in usb_desc.c doesn't make a difference (I went down to "10"). Technically, it doesn't draw any power whatsoever from the iOS device (ie, I've cut the V_USB trace...
    14 replies | 758 view(s)
  • ubiubu's Avatar
    08-27-2018, 08:25 PM
    ubiubu replied to a thread CS4272 issues in Audio Projects
    Ok, just what I thought. I just went back and removed the I2S isolator again and will run the board with Teensy as master. Is it possible though that the USB HID is somehow broken in iOS (I've upgraded to 1.43beta...
    14 replies | 758 view(s)
  • ubiubu's Avatar
    08-27-2018, 11:52 AM
    ubiubu replied to a thread CS4272 issues in Audio Projects
    I'm on 1.8.5., with the current version of the audio library pulled from github. But yeah, I guess the distortion I'm seeing comes from sticking USB input/output onto the I2S slave mode; it works alright when using...
    14 replies | 758 view(s)
  • ubiubu's Avatar
    08-25-2018, 02:36 PM
    ubiubu replied to a thread CS4272 issues in Audio Projects
    Ok, so I've replaced the codec and things are working now. So far so good. I'm on a Mac and predictably perhaps, I've been running into similar issues as did packetloss69 above, distorted audio over USB. (Output...
    14 replies | 758 view(s)
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Using Teensy Audio Library with SPI DAC (e.g. MCP4922) 09-08-2018 06:50 AM
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