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Altera_Forum
Honored Contributor I
1,119 Views

Altera Avalon I2C Master Core API Timeout

I am using the API with the Altera Avalon I2C Master core in non-interrupt mode. It works fine except when I try to access a device that is not currently on the I2C bus. Even though the driver code appears to have timeouts coded, it takes over an hour to timeout with a 100 MHz NIOS processor. Has anyone found and solved this problem? 

 

Thanks, 

Ron
0 Kudos
2 Replies
GHoge
Beginner
159 Views

Looks like just poorly written code. You can modify the altera_avalon_i2c.c file yourself and streamline some of the wait states and wait times. But that becomes a configuration control nightmare for me. Were you ever able to resolve this any other way?

MRezn
Beginner
137 Views

altera/intel soft/hard i2c ipcore (even in silicon) hangs of any noise and I think you can hardly repair it

use your own soft controller

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