AM437x PRU Hands on Lab

Rafael Finkelstien

Hello,

I'm following the LAB 1 in the PRU Training Hands-on-Lab (http://processors.wiki.ti.com/index.php/PRU_Training:_Hands-on_Labs#LAB_1:_Toggle_LED_with_PRU_GPO

The guide was made for the AM335x Beaglebone Black, and i'm trying to adapt to the AM437x.

I keep getting the linking error:

error #10099-D: program will not fit into available memory. run placement with alignment fails for section "C4_GROUP" size 0x11c page 1

I think it is related to the instruction

CT_CFG.GPCFG0 = 0;

Because once I comment this instruction the program compiles successfully.

Does someone knows why is it happening, or a document where i can find my answer?

Thanks.

over 9 years ago

0 Biser Gatchev-XID over 9 years ago

TI__Guru**** 393215 points

Hi,

Which include file are you using?

0 Rafael Finkelstien over 9 years ago in reply to Biser Gatchev-XID

Intellectual 290 points

I'm including the files stdint.h and pru_cfg.h

I'm using the include file from in the PRU SDK provided inside the PROCESSOR-SDK-LINUX-AM437X
The path is "~/ti-processor-sdk-linux-am437x-evm-02.00.02.11/example-applications/pru-icss-4.0.2/include/am437x$"
And i've deleted the include path "${CCS_BASE_ROOT}/pru/include" as pointed in the NOTE.

Was that your question?

0 Biser Gatchev-XID over 9 years ago in reply to Rafael Finkelstien

TI__Guru**** 393215 points

OK, I will forward this to the PRU experts. They will post directly here when feedback is available.

0 Jason Reeder over 9 years ago in reply to Biser Gatchev-XID

TI__Genius 10440 points

Rafael,

It looks like you are using the correct include files (.../pru-icss-4.0.2/include/am437x/) but you need to also make sure that you are using a command linker file that is intended for the AM437x device as well (AM437x_PRU_SS1.cmd instead of AM335x_PRU.cmd).

This command linker file will be found in any of the AM437x example folders. For instance, .../pru-icss-4.0.2/examples/am437x/PRU_gpioToggle/AM437x_PRU_SS1.cmd.

You'll notice that the length of the PRU_CFG section is larger in the AM437x linker file than in the AM335x linker file.

Jason Reeder

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AM437x PRU Hands on Lab