Hello.

I creating project with LCMXO2-1200HC device in QFN32 package, so i have very limited number of IO pins and I want to configuring FPGA by I2C instead of JTAG.

I try to do this similarly to this descriprion:

http://buildingelectronics.blogspot.com/2017/09/ma...

Only differences are:

1. I use MachXO2 instead of MachXO3.

2. Trouble 4 not exist. I use Lattice Diamond 3.10, trouble exist only in Lattice Diamond 3.9 or i quess, in earlier versions. But in 3.10, WBCLKI is generated and i hope it is generated correctly.

So I generate I2C module using IPExpress:

Then I insert some code from generated i2c_tmpl.vhd file, to my main.vhd file.

And set some parameters in preferences (I2C ENABLE, JTAG DISABLE):

But when I try to synthetise this, I have this error:

Why?

In there something I forgot to do?

Complete project: I2C_configuration_test.zip.

Hello. I'm not well-versed in VHDL, but I did get your project to synthesize by importing the i2c.ipx file.

You did not check 'Import IPX to Diamond Project' when creating the I2C module via EFB and IPExpress.

I have not tested this solution beyond software synthesis.

However, I can point you to a working SPI programming configuration for the MachXO2 -

Best of luck.

[quote]You did not check 'Import IPX to Diamond Project' when creating the I2C module via EFB and IPExpress.[/quote]

Thank you very much.

This is it.

After adding the ipx file, the project has been synthesized and works (I mean: programming via I2C works).