Hello Opencores community,

I'm trying to have I²C communication on a board.
I have a FPGA cyclone IV with Linux running on it.
We use the I2C_gpio Linux driver.
We have tried with Altera GPIO but it doesn't work correctly...
Indeed we can see signals on SDA and SCL but really strange !

So we are now trying with custom GPIO : http://opencores.org/project,i2cgpio
I have opened the component with SOPC and tied it on avalon bus (avalon memory mapped slave).
But during SOPC compilation an error occurs and we can't use the sopc after.
The result of the System generation is the following.

What's wrong with this GPIO ?
Howewer the GPIO seems to be easy to be used ?
Is there any documentation for using it ?

Thanks !

Hello,

it seems that after downloading a recent revision of bit_gpio, no more problems with SOPC integration and compilation.

Let's have a try with I²C communication now !