OMAP 4430: Code Composer - Cannot read "Pressure Bit" Distrbution through trace

Heron Singarajah

Hello,

I am using OMAP4430 on the blaze platform with a Spectrum Digital Tracer and I'm trying to get a reading of the Pressure Bit distribution on the bus.

I'm running a simple program which does a memory copy on the DMA. Accesses one block of memory, copies to another, waits then loops back to the start.

Although I do encounter troubles with the tracer from time to time, when I do get it up and running, I can read all values for Throughput etc, but reading the "Presure_bit" gives me all 0 on data.

Is there any special configuration requried to read the data?

over 13 years ago

0 Gina Glaser over 13 years ago

TI__Expert 8055 points

Heron,

The omapconf tool allows you to read and write different registers, which would be an easy way to read the Pressure Bit. Contact your TI representative for access to omapconf. You could also try devmem2 for reading the register: http://elinux.org/Board_Bringup_Utilities

Regards,

Gina

0 abhijit over 13 years ago in reply to Gina Glaser

Intellectual 585 points

Gina,

Can we use devmem2 for writing the register contents also??

Thanks

Abhijit

0 Gina Glaser over 13 years ago in reply to abhijit

TI__Expert 8055 points

Abhijit,

Yes, devmem2 can be used to read or write from/to any location in memory. It is a simple tool, basically just a wrapper around /dev/mem. You could contact your TI representative for access to omapconf, which provides more functionality.

Regards,

Gina

Processors

Processors forum

OMAP 4430: Code Composer - Cannot read "Pressure Bit" Distrbution through trace