iCE40 Ultra Plus hard ip sb_i2c problem

[r3v]

Hi,
I'm trying to use the hard ip i2c with a fpga lattice iCE40 ultra plus. I have the breakout board.

when I symthetise the project I have this : I1202: Reading Architecture of device iCE40UP5K
Warning-1411: No clock is reaching the reference clock pin 'SBCLKI' of  instance 'i2c_control.SB_I2C_INST_RT'. So, no gen clock will be inferred at output of this instance.

the clock signal is the clock system.
I'm using iCECube2.

I'm looking for a project example.

thanks
 

[mon2]

See if this helps:

https://www.eevblog.com/forum/fpga/ice40up-pll-with-external-clock-howto/

[iMo]

Have you tried with Radiant?

..
I'm using iCECube2.