programing SPI EEPROM through DSP when using secondary I2C for other devices

has anybody an idea?

Hello Mihei,

Are you disabling the Selfboot before you try to write the latest compilation through the DSP?

Because, when SigmaStudio loads in the small program that allows it to pass data out to the EEPROM, it performs a reset. If the selfboot pin is active then the part will try to self boot at the same time that SigmaStudio is trying to configure the port and to program the EEPROM. This can cause a failure to program the EEPROM.

My colleague, Ken, will be performing some tests and responding. He also commented that the secondary I2C port cannot be active when you compile the program because they it will be active when it tries to boot. So it has to be set in software after booting. He will reply soon with some more details. Meanwhile, try to disable selfboot and see if that makes a difference.

Thanks,

Dave T

Hi Dave, the selfboot is disabled before start the writing.

But I think I found the solution in a thread of the ADAU1467, which tells me to create a schematic with secondary I2C deactivated and activate on runtime by register write. I cant find the thread any more. Otherwise I would link it. It was from 2018. If you find it may you link it, so others can also use this workaround.

Thanks

Mihei

Found it:

ez.analog.com/.../adau1467-dual-master-control-port

Hello Mihei,

Great job searching the forum! It is funny that it is my post!

Yes, this is the solution.

Dave T