I2C on Pulpissimo
#6
(12-05-2018, 02:11 PM)kgf Wrote: Thanks to you we have identified one issue. The pad cell used in the  

  rtl/pulpissimo/pad_frame.sv

was (mistakenly) a pull down pad and not a pull up pad. This is now fixed. We did not yet try a full application, but a smaller test showed us that tis seemed to be the issue. We will be looking into it, but you could maybe give it a try to see if this solves the issue.

Thanks for your effort. As soon as I have time to try it, I'll let you know.

I was doing some reverse engineering on the RTL and noticed that the event signals coming out from I2C modules are always X. This is due to the err_o port of udma_i2c_control, which is not connected in the port map (check
udma_i2c_top.sv). Is this disconnection intentional? I guess it doesn't affect the synchronous way of using I2C ..
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Messages In This Thread
I2C on Pulpissimo - by magseet - 12-03-2018, 09:41 PM
RE: I2C on Pulpissimo - by kgf - 12-04-2018, 08:58 AM
RE: I2C on Pulpissimo - by magseet - 12-04-2018, 11:11 AM
RE: I2C on Pulpissimo - by kgf - 12-05-2018, 07:52 AM
RE: I2C on Pulpissimo - by kgf - 12-05-2018, 02:11 PM
RE: I2C on Pulpissimo - by magseet - 12-05-2018, 03:33 PM
RE: I2C on Pulpissimo - by gideros - 09-23-2019, 06:02 AM
RE: I2C on Pulpissimo - by gideros - 10-21-2019, 07:01 AM
RE: I2C on Pulpissimo - by kgf - 10-25-2019, 12:33 PM
RE: I2C on Pulpissimo - by bluewww - 11-14-2019, 03:05 AM

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