CCS/LAUNCHXL-F28377S: CLA code does not run in examples.

Stephen French

Part Number: LAUNCHXL-F28377S

Tool/software: Code Composer Studio

I cannot seem to get any of the CLA examples to execute CLA code in the examples provided in ControlSUITE.

I am using CCS6.2 and have followed the instructions on how to switch context to the CLA when the code executes

Cla1ForceTask1andWait();

I seem to be able to 'step through' the CLA code, however none of the registers or variables ever change except the Program Counter. The Cla1ForceTask1andWait() function never exits and the cla1Isr1() interrupt never gets called.

I have tried on 2 LaunchPads and they exhibit the exact same behavior.

I feel I am missing something fundamental but after reading up on the CLA and CPU nothing obvious stands out.

Thank you.

over 8 years ago

0 Vishal_Coelho over 8 years ago

TI__Mastermind 20850 points

Hi Stephen,

which example did you try to run, and which variables are not being updated?

Also, do you get any build errors or warnings?

0 Stephen French over 8 years ago in reply to Vishal_Coelho

Prodigy 30 points

Hello Vishal.

I have tried cla_asin_cpu01, cla_crc8_cpu01, and cla_logic_cpu01.

The build shows no warnings or errors.

0 Vishal_Coelho over 8 years ago in reply to Stephen French

TI__Mastermind 20850 points

Ok, lets take the asin example. Can you post A0, A1, A2, fVal and result in the expressions window. I want to see whether they are at the correct address - also do they have correct values?

0 Stephen French over 8 years ago in reply to Vishal_Coelho

Prodigy 30 points

Here is me stepping through the CLA code until the end.

Notice here it steps into other tasks!

Tried to reconnect to CPU here.

0 Vishal_Coelho over 8 years ago in reply to Stephen French

TI__Mastermind 20850 points

Ok, I think there is a bug in the example. In the linker command file, is Cla1Prog assigned to both RAMLS4 and RAMLS5?

If so, in the c file, cla_asin_cpu01.c:CLA_configClaMemory() be sure to configure RAMLS4 as CLA program memory (in addition to LS5)

    //
    // Select LS4 and LS5RAM to be the programming space for the CLA
    // First configure the CLA to be the master for LS4/LS5 and then
    // set the space to be a program block
    //
    MemCfgRegs.LSxMSEL.bit.MSEL_LS4 = 1;
    MemCfgRegs.LSxCLAPGM.bit.CLAPGM_LS4 = 1;

    MemCfgRegs.LSxMSEL.bit.MSEL_LS5 = 1;
    MemCfgRegs.LSxCLAPGM.bit.CLAPGM_LS5 = 1;

See if this solves the problem. If it does, i will file a ticket to get these fixed

0 Eric *** over 8 years ago in reply to Vishal_Coelho

Prodigy 130 points

Vishal,

Where is the linker file stored in the example problems? Normally, on creating a blank project, the linker file is in the main project folder. I don't see any linker file in any of the project spaces used in the example projects.

--Eric

0 Eric *** over 8 years ago in reply to Eric ***

Prodigy 130 points

Nevermind, found it by looking in the project's linker settings. "controlSUITE\device_support\F2837xS\v210\F2837xS_common\cmd"

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CCS/LAUNCHXL-F28377S: CLA code does not run in examples.