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Yakov_E
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2 years ago
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How Change I2C clock on Cyclone V HPS , Terasic DE10-Nano

We use Terasic DE10-NANO with Linux Console (kernel 4.5), copied from DE10-Nano Kit . It works fine. We recently started using LTC I2C interface for our I2C device with no success. After some inve...
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Yakov_E
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2 years ago

Hi Tiwari,

Thank you for help.

We use i2c of HPS.

We did different experiments: started from i2c-1 (we moved its 2 pints to JP7 connector in Quartus design).

But when we encountered with its 400 KHz clock, we tryed to use i2c-0.

In our surpizing, its real clock is 50 KHz (I have photos), not 100!

This is good for us also ( less than 400), but It revealed, that i2c-0 allows one i2c address only: 0x53 (G-sensor).

Command i2cdetect shows that too.

So, we can use any i2c-0, i2c-1, but we have not experience with device tree and have no sourses