Trying to program PRU on omap-l138 LCDK

Matthew Mulvey

Other Parts Discussed in Thread: OMAP-L138, OMAPL138

Hello,

I am using the Omap-L138 LCDK dev board. I am able to program the ARM and DSP with AISgen and the sfh_OMAP-L138 flash-loader utility.

But how do I load a program onto one of the PRUs in the OMAP? I can build a PRU program with CCSv6, but how to I load it onto the device? Trying to use the debugger probe through CCS does not seem to work for the PRU (debug build doesn't fit in the PRU memory). The debug probe works for ARM and DSP, but not for the PRU. Do I need to make a release build for the PRU, and convert it to something smaller that will fit in the PRU memory? Even if I can do that, how to I load it into the device?

Thanks for any guidance you can provide,

- Matt.

over 9 years ago

0 Titusrathinaraj Stalin over 9 years ago

TI__Guru** 116100 points

Hi,
I've not worked with PRU.
You would get PRU cores when you connect the target OMAPL138.
Did you try to connect PRU and load on PRUs ?

0 Arvind Singh over 9 years ago

Mastermind 6115 points

Hi Matthew,

Check out below mentioned Wiki for PRU software packages.

http://www.ti.com/tool/pru-swpkg

0 Matthew Mulvey over 9 years ago in reply to Arvind Singh

Intellectual 300 points

Thanks, I did look at the wiki for PRU software, and read everything and followed the links, but it does not include any utility or source code for actually loading a PRU program onto the device. In CSSv6, I installed the PRU compiler, and it seems like I can connect to the PRU in CCS using the debug probe, but when I try to run debug with a PRU program, I get this:
PRU_0: File Loader: Verification failed: Values at address 0x0000000000000020 do not match Please verify target memory and memory map.
I think it does not fit in the PRU memory, because it is a debug build, so it is larger. All I can guess is that maybe I need to make a release version of the program, which will be smaller, and load it onto the device, but I have found no documentation or support for how do do that with the OMAP-L138 LCDK.
Are there any tools or documentation to do this?