[hpsdr] MicSamples from Penelope (3)

[wully]

Hi Jeremy

Thank you for pointing me into the right direction: that was just the 
missing thing: how to control the TLV320AIC.
I will try to run these things and then figure out, how to program it 
directely in my own code.

Does a spec exist on the control of the I2C-Bus from Ozy?

73 de HB9EPU, Alfred

On 27.12.2010 17:37, Jeremy McDermond wrote:
> On Dec 27, 2010, at 7:46 AM, wully wrote:
>
>> ***** High Performance Software Defined Radio Discussion List *****
>>
>> Hi all
>>
>> I have tried putting a 1 to 10mv Analog Signal into the TLV320aic, the samples remain 0
>> I have measured the bias voltage: it is zero.
>> How is the TLV320AIC initialized and configured?
>> It seems, that this init is not done. What do I miss?
> On PowerSDR there's a few commands in initozy.bat that twiddle bits on the i2c bus for the TLV320 on Penelope.  In John's code, it's just a script named initozy.  These are the appropriate lines:
>
> #write_i2c $USB_VID $USB_PID 0x1a 0x1e 0x00 0x00 2
> #write_i2c $USB_VID $USB_PID 0x1a 0x12 0x01 0x00 2
> #write_i2c $USB_VID $USB_PID 0x1a 0x08 0x14 0x00 2
> #write_i2c $USB_VID $USB_PID 0x1a 0x0c 0x00 0x00 2
> #write_i2c $USB_VID $USB_PID 0x1a 0x0e 0x02 0x00 2
> #write_i2c $USB_VID $USB_PID 0x1a 0x10 0x00 0x00 2
> #write_i2c $USB_VID $USB_PID 0x1a 0x0a 0x00 0x00 2
>
> #write_i2c $USB_VID $USB_PID 0x1b 0x1e 0x00 0x00 2
> #write_i2c $USB_VID $USB_PID 0x1b 0x12 0x01 0x00 2
> #write_i2c $USB_VID $USB_PID 0x1b 0x08 0x14 0x00 2
> #write_i2c $USB_VID $USB_PID 0x1b 0x0c 0x00 0x00 2
> #write_i2c $USB_VID $USB_PID 0x1b 0x0e 0x02 0x00 2
> #write_i2c $USB_VID $USB_PID 0x1b 0x10 0x00 0x00 2
> #write_i2c $USB_VID $USB_PID 0x1b 0x0a 0x00 0x00 2
>
> Note they're commented out because I don't think John supports transmit yet.  John will probably correct me, or have it fully coded up by tomorrow afternoon.  I 0x1a is the address for Janus (you shouldn't need these), and 0x1b is the address for Penelope.
>
> If you want to see how it's done in a more embedded fashion without external programs, and can grok Objective C, the appropriate code is in MacHPSDR in the following file at line 150:
>
> https://www.xenotropic.com/ham-svn/MacHPSDR/trunk/OzyIOCallbackThread.m
>
>> 73, HB9EPU
> --
> Jeremy McDermond (NH6Z)
> Xenotropic Systems
> mcdermj at xenotropic.com
>
>
>


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