5 Replies Latest reply on Jun 27, 2014 2:56 AM by user_366036678

I2C without using CPU

user_366036678 Aug 18, 2017 3:38 PM

Hello,

I noticed that when using I2C, we always need to call functions in order for it to operate.

So I'm wondering, is it possible to run I2C without the CPU?

1. Re: I2C without using CPU

user_14586677 Jun 11, 2014 7:43 AM (in response to user_366036678)

Might be possible to do a Verilog controlled link, otehrwise

answer is no. You have to start it, command it, error check it,

all thru API's.



Regards, Dana.
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2. Re: I2C without using CPU

jim.gilmartin Jun 11, 2014 3:41 PM (in response to user_366036678)

Where are you gonna put the program if there is no CPU? :D

Perhaps you meant without the dedicated I2C hardware in the CPU?

The answer is "Of course you can !"

But why would you want to.
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3. Re: I2C without using CPU

user_366036678 Jun 12, 2014 2:01 AM (in response to user_366036678)

Hello,



What I meant to do was to run I2C communication without having to call the APIs (which seems impossible according to Dana).



For what purpose? It's for measuring the consumption of the I2C block.
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4. Re: I2C without using CPU

user_22393527 Jun 25, 2014 3:32 PM (in response to user_366036678)

I should think it could be possible using DMA, to an extent. You if you can start andstop it with CPU, I think you could be able to transfer things DMA. You may even be able to use the DMA to start and stop it by writing to the correct registers... sounds a bitlike a pain.
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5. Re: I2C without using CPU

user_366036678 Jun 27, 2014 2:56 AM (in response to user_366036678)

I'm a taker if it could help reduce consumption.

Is it really possible to start and stop by writing to registers?
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