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Thread: Performance Counter Registers on TC297 board

  1. #1
    New Member New Member Rombic is on a distinguished road
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    Performance Counter Registers on TC297 board

    Hi all,

    Performance Counter Registers on TC297 board works only with connected usb cable on board (i suppose,it is debug mode).

    Code:
    	_mtcr(CPU_M1CNT,0);
    	_mtcr(CPU_M2CNT,0);
    	_mtcr(CPU_M3CNT,0);
    	_mtcr(CPU_CCNT,0);
    
    	_mtcr(CPU_CCTRL,0|(1<<1)|(2<<2)|(2<<5)|(2<<8));
    
            unsigned int value=_mfcr(CPU_CCNT);
    but if i connect power supplier, value is null.

    what other register i should configurete for connect without USB cable?

    Thank you
    Last edited by Rombic; Jun 19th, 2019 at 04:22 AM.

  2. #2
    Intermediate Intermediate UC_wrangler is on a distinguished road
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    Hi Rombic. Try enabling the On-Chip Debug System with this sequence first:

    Code:
       #include "IfxCbs_reg.h"
    
       // Unlock debug system if it's not already unlocked
       if( !(__mfcr(CPU_DBGSR) & 0x1) )
       {
          CBS_OEC.U = 0xA1;
          CBS_OEC.U = 0x5E;
          CBS_OEC.U = 0xA1;
          CBS_OEC.U = 0x5E;
       }
    
       _mtcr( CPU_DBGSR, 1 );            // enable the Core Debug Controller
    Last edited by UC_wrangler; Jun 19th, 2019 at 12:44 PM.

  3. #3
    New Member New Member Rombic is on a distinguished road
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    Hi UC_wrangler,

    It works! Thank you.

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