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hard fault exception

Satyajit Sahoo

I am generating optimsed code using simulink coder for LMS filter using stm32f4VG407 discovery board,KEIL MDK-ARM, but upon single conversion of signal through ADC , it is stopping at hardfault handler. fault report:
MM_FAULT_STAT:0x00
BUS_FAULT_STAT:0x04 i.e. IMPRECISERR IS HIGH
USG_FAULT_STAT:0x000
HARD_FAULT_STAT:0x4000000 i.e.FORCED IS HIGH
DBG_FAULT_STAT:0x00000001 i.e. HALTED IS HIGH

I am using Matlab 2013b & MDK_ARM 4.74
please help me how to get rid of this.

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  • 0 in reply to Westonsupermare Pier

    I am still struck in hard fault exception

    after running 36 times(i.e 36 adc conversions & hence 36 outputs at dac) the program is getting into hard fault exception from within this for loop:

     /* Update weights for the next input sample
     */
    j_0 = 0;
    for (j = (int32_T)*startIdx; j < wLen; j++) {
      prodMuErrX = accWtU * xBuf[j];
      prodMuErrX += mul_s32_s32_s32_sr30(leakFac, wBuf[j_0]);
      wBuf[j_0] = prodMuErrX;
      j_0++;
    }

    I even checked changing stack size but the number of conversions (i.e 36 ) was independent of change in stack size.

    Can somebody please help me regarding this?

Reply
  • 0 in reply to Westonsupermare Pier

    I am still struck in hard fault exception

    after running 36 times(i.e 36 adc conversions & hence 36 outputs at dac) the program is getting into hard fault exception from within this for loop:

     /* Update weights for the next input sample
     */
    j_0 = 0;
    for (j = (int32_T)*startIdx; j < wLen; j++) {
      prodMuErrX = accWtU * xBuf[j];
      prodMuErrX += mul_s32_s32_s32_sr30(leakFac, wBuf[j_0]);
      wBuf[j_0] = prodMuErrX;
      j_0++;
    }

    I even checked changing stack size but the number of conversions (i.e 36 ) was independent of change in stack size.

    Can somebody please help me regarding this?

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