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Andrake  
#1 Posted : Friday, June 8, 2012 8:35:59 AM(UTC)
Andrake

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Kind forumers
Can I use I2C connections (17) to get info about samplig rate from Buffalo III without removing IC8?
I've given a look at Hifiduino site and since I'm not interested in any external control on the DAC (volume, iir, bandwith, etc.), I don't want to program a different controller for the Sabre 32.
I'm going to use a PIC microcontroller for controlling a lcd display, I would use the dpll calculation method explained in the codes found on Hifiduino.
In other words if I used a "polite" I2C protocol will IC8 be so kind as to reply the value of dpll? Angel
I thank you in advance for any suggestion.
Andrea
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Russ White  
#2 Posted : Saturday, June 9, 2012 2:41:13 PM(UTC)
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You can never have two I2C masters active on the same bus.
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LeonvB  
#3 Posted : Saturday, June 9, 2012 5:37:12 PM(UTC)
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Multiple masters is only possible with "smart" I2C devices: they need bus busy detection and arbitration logic. See: http://www.i2c-bus.org/MultiMaster/
When you are attaching a PIC microcontroller anyway, it's best to remove the firmware and set everything yourself.
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Russ White  
#4 Posted : Saturday, June 9, 2012 8:12:03 PM(UTC)
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True.

As Leon said, those "smart" masters work by never having more than one active (driving the bus) at the same time.
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Andrake  
#5 Posted : Monday, June 11, 2012 6:31:53 AM(UTC)
Andrake

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Originally Posted by: Russ White Go to Quoted Post
You can never have two I2C masters active on the same bus.


I had this terrible suspicion Angel
Thanks
Andrea
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