TMS320F28027F: Issues while running instaspin-foc proj_lab01

Prakash Krishnaswamy

Part Number: TMS320F28027F
Other Parts Discussed in Thread: MOTORWARE, LAUNCHXL-F28027F, LAUNCHXL-F28027

Hi All,

I'm trying to run proj_lab01 (instaspin_foc\boards\boostxldrv8301_revB\f28x\f2802xF\projects\ccs\proj_lab01) in C2000 LaunchPad XL. The app hangs while executing OFFSET_init function in hal.c at

// initialize the current offset estimator handles
for(cnt=0;cnt<USER_NUM_CURRENT_SENSORS;cnt++)
    {
      obj->offsetHandle_I[cnt] = OFFSET_init(&obj->offset_I[cnt],sizeof(obj->offset_I[cnt]));
    }

offset.c and filter_fo.c were not added to the project. So I added them and now OFFSET_init works. But again it hangs in HAL_setParams at

_iq beta_lp_pu = _IQ(pUserParams->offsetPole_rps/(float_t)pUserParams->ctrlFreq_Hz);

On analyzing further I found that any floating point operation hangs the app. (I confirmed by doing some floating point operation in main.c upon startup)

I've some older apps that works correctly. Having problems only with instaspin-foc lab examples.

NOTE: I'm using CCS Version: 7.3.0, C2000 compiler TIv16.9.7, motorware_1_01_00_18

Thanks,

Prakash

over 7 years ago

0 Yanming Luo over 7 years ago

TI__Guru** 116110 points

You are right. Missed the offset.c to define OFFSET_init() and initialize offsetHandle_I/V and filterHandle. Please add this offset.c in this project by yourself. The other projects didn't have this problem, you may keep moving on, thanks.

0 Prakash Krishnaswamy over 7 years ago in reply to Yanming Luo

Intellectual 440 points

Hi Yanming,

Thanks for your response.

I added the missing files. I was wondering how the project compiled with out giving any linker errors. Also, still I'm facing crash when a floating point arithmetic operation is done. I've installed CCS and Motoware in different drives C:\ti\ccsv6 and E:\ti\motorware. Could that be a problem? I guess something is wrong in the project settings.

Thanks,

Prakash

0 Sean Bigley over 7 years ago in reply to Prakash Krishnaswamy

TI__Genius 17175 points

Is there an error reported during the crash?

Sean

0 Prakash Krishnaswamy over 7 years ago in reply to Sean Bigley

Intellectual 440 points

No error was shown. I set a break point in HAL_setParams. But the control doesn't reach there. I guess it hangs while executing _iq beta_lp_pu = _IQ(pUserParams->offsetPole_rps/(float_t)pUserParams->ctrlFreq_Hz);
Please find attached the screenshot of ccs when the app got crashed.

Thanks,

Prakash

0 Prakash Krishnaswamy over 7 years ago in reply to Prakash Krishnaswamy

Intellectual 440 points

Hi All,

I'm able to run proj_lab01 after enforcing linking order of libraries as follows:

rts2800_ml.lib
2802xRevB_Fast_IQ_ROMSymbols.lib
2802xRevB_Fast_ONLY_ROMSymbols.lib
2802xRevB_Fast_RTS_ROMSymbols.lib
fast_public.lib
IQmath.lib

But now I'm facing another issue running proj_lab01b. While executing the following line I get PIE_illegalIsr
ctrlHandle = CTRL_initCtrl(estNumber,&ctrl,sizeof(ctrl)); //v1p7 format default
I'm using the latest ccs and motoware on ubuntu.

Thanks

0 Yanming Luo over 7 years ago in reply to Prakash Krishnaswamy

TI__Guru** 116110 points

Didn't have this line code in proj_lba01.c in original motorware. You need to add ctrl.c in project if you want to do this. Please go ahead with next lab project if you want to do more test.

0 Prakash Krishnaswamy over 7 years ago in reply to Yanming Luo

Intellectual 440 points

Thanks for your response Yanming.

I was testing using the old lauchpad LAUNCHXL-F28027 which does not have FAST lib in ROM. I think this is the reason for getting illegal isr exception. I've ordered LAUNCHXL-F28027F. I hope it will work fine in the new lauchpad that supports instaspin. If I still face issues with the new launchpad, I'll open another thread.

Thanks all!

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TMS320F28027F: Issues while running instaspin-foc proj_lab01