please help me in the following for the error in c code for TMS3C6713 DSP KIT

[bhavikparekh51]

Hello
I am working on d project for Voice detection and Recording playback.... i have developed d code in code composer studio ..........the code is as follows...


the error in the code is

1) Error: can't allocate.far ,size 0004e47a (page 0) in IRAM (avail:0002fde0)

2) Error: error in input ./ debug detect_play.out not built.

The code is attached with the document or it is given below...





Block DC :

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Code C - [expand]
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//Block the DC in input signal.
//sample = current sample of input signal (16-bit:S15-bit)
//returns sample - DC (16-bit)
 
#define dc_coeff 10                   //coefficient for the DC blocking filter
int dc = 0;                           //current DC estimate (32-bit: SS30-bit)
short block_dc(short sample)
{
  short word1,word2;
 
  if (dc < 0) {
    word1 = -((-dc) >> 15);                 //retain the sign when DC < 0
    word2 = -((-dc) & 0x00007fff);
  }
  else {
    word1 = dc >> 15;                           //word1=high-order 15-bit word of dc
    word2 = dc & 0x00007fff;                    //word2=low-order 15-bit word of dc
  }
  dc = word1 * (32768 - dc_coeff) + 
       ((word2 * (32768 - dc_coeff)) >> 15) + 
       sample * dc_coeff;                       //dc=dc*(1-coeff) +sample*coeff
  return sample - (dc >> 15);               //return sample - dc
}
 
 
 
 
//Envelope detection routine
/* Approximate the envelope of the signal by rectifying and filtering
 *  sample = input sample (16-bit)
 *  returns signal envelope (16-bit)
 */
#define env_coeff 4000                      /* / 32768  envelope filter parameter */
int envelope = 0;                   /*current sample of signal envelope (32-bit) */
short detect_envelope(short sample)
{ 
  short word1,word2;
 
  if (sample < 0)
    sample = -sample; /* rectify the signal */
 
  word1 = envelope >> 15;                       /* high-order word */
  word2 = envelope & 0x00007fff;                /* low-order word */
  envelope = (word1 * (32768 - env_coeff)) +
             ((word2 * (32768 - env_coeff)) >> 15) + 
             sample * env_coeff;                /* envelope =
                                            envelope*(1-coeff) + sample*coeff */
  return envelope >> 15;
}
 
 
 
//detect_play.c
 
//include appropriate support files
 
#include "slevel.h"
 
#define buffer_length 80000
#pragma DATA_SECTION(buffer,".far")
short buffer[buffer_length];
#pragma DATA_SECTION(playback_buffer,".far")
short playback_buffer[buffer_length];
 
int buffer_pos = 0;     /* input buffer position */
int playback_pos = 0;   /* playback buffer position */
int gain = 1;           /* output gain */
int duration = 0;       /* signal duration (playback on when duration > 0)*/
 
short buffer_data(short);           /* function declarations */
void start_playback(int *);
short playback(int *);
 
interrupt void c_int11()            /* interrupt service routine */
{
    short sample_data;
    int temp;
 
    sample_data = input_sample();             /* input data */
    sample_data = buffer_data(sample_data); /* buffer input */
    temp = signal_level(sample_data);         /* analyze the signal level */
  if (temp > 0 && duration == 0) {   /* if signal detected and playback off */
        duration = temp;
        start_playback(&duration);            /* start playback */
    }
    if (duration > 0)                       /* if playback is on */
        sample_data = playback(&duration);    /* play stored data backwards */
    else
        sample_data = 0;                      /* output zero signal */
    output_sample(sample_data);             /* output data */
    return;
}
 
void main()
{
  comm_intr();   /* init DSK, codec, McBSP */
  while(1);      /* infinite loop */
}
 
/* store the input sample in a circular buffer */
short buffer_data(short sample)
{
    buffer[buffer_pos] = sample;    /* store sample */
    buffer_pos++;                   /* increment buffer position */
    if (buffer_pos > buffer_length)
        buffer_pos = 0;             /* buffer wrap-around */
    return sample;
}
 
/* set up data structures for playback */
void start_playback(int *duration)
{
    int i;
 
    if (*duration > buffer_length)
        *duration = buffer_length;  /* adjust duration to <= buffer length */
    playback_pos = buffer_pos;    /* copy buffer pointer */
    for (i=0;i<buffer_length;i++) /* copy buffer */
        playback_buffer[i] = buffer[i];
}
 
/* play back stored samples in reverse order */
short playback(int *duration)
{
    short output;
 
    output = playback_buffer[playback_pos]; /* outputting samples in reverse */
    output = gain * output;         /* add gain to output */
    playback_pos--;  /* reducing the count to access the next sample */
    (*duration)--;   /* decrement duration (playback stops when duration == 0)*/
    if (playback_pos < 0)
        playback_pos += buffer_length; /* buffer wrap-around */
    return output;
}
 
 
 
 
 
// Signal level analysis routine
 
#include "block_dc.h"
#include "detect_envelope.h"
/*
 * Analyze the characteristics of the input
 * returns 0 when no command is generated
 * returns a non-zero number of samples when detecting a signal of
 *   large enough signal level, long enough duration and
 *   the signal has been low for a specified period of time.
 *   Returned integer indicates the duration of the detected signal.
 */
#define threshold_low   200     /* signal loss threshold */
#define threshold_high  400     /* signal detection threshold */
#define threshold_start 500   /* delay before turning the signal on */
#define threshold_stop  3000  /* delay before turning the signal off */
#define extra_samples   600     /* extra duration so signal is not chopped */
short signal_on = 0;          /* "signal present" flag */
short signal_found = 0;       /* "approved signal present" flag */
int duration1 = 0;            /* approved signal duration */
int duration_lost = 0;        /* signal loss duration */
int signal_level(short sample)
{
  int signal;
  int ret = 0;
 
  signal = detect_envelope(block_dc(sample)); /* approx. signal envelope */
  if (signal_on) {                /* an approved signal is in progress */
    duration1++;
    if (signal < threshold_low) { /* if the signal is low */
      duration_lost++;            /* accumulate signal loss duration */
      if (duration_lost > threshold_stop) { /* signal lost: output duration */
        ret = duration1 + extra_samples;    /* return signal duration */
        signal_on = 0;                      /* indicate the signal is lost */
        signal_found = 0;
        duration1 = 0;
      }
    }
    else {
      duration_lost = 0;          /* reset signal loss duration */
    }
  }
  else if (signal_found) { /* a large enough signal was recently detected  */
    if (signal < threshold_low) { /* signal lost: reset duration */
      signal_found = 0;
      duration1 = 0;
    }
    else {
      duration1++;
      if (duration1 > threshold_start) { /* signal is approved (not noise) */
        signal_on = 1;
        duration_lost = 0;
      }
    }
  }
  else if (signal > threshold_high) { /* a large enough signal is observed */
    signal_found = 1;        /* start signal tracking */
    duration1 = 1;
  }
  return ret;
}

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Please help me asap...I am a beginner ....

 

[ace1903]

Seems like you are out of space. I am not familiar with this DSP but #define buffer_length 80000 is unusually large for DSP. Does it compile well with something like 8000? Check buffers sizes against available data memory.

 

[bhavikparekh51]

Seems like you are out of space. I am not familiar with this DSP but #define buffer_length 80000 is unusually large for DSP. Does it compile well with something like 8000? Check buffers sizes against available data memory.

Is Their any problem related to code ..... could u plzz tell me....??

 

[Gorgon]

From the error message, you are trying to declare 313k in a 191k space. A slight mismatch?

 

[bhavikparekh51]

From the error message, you are trying to declare 313k in a 191k space. A slight mismatch?

Hello,
My first error is solved....i.e. Error: can't allocate.far ,size 0004e47a (page 0) in IRAM (avail:0002fde0)

but second error is not solved yet i.e.Error: error in input ./ debug detect_play.out not built.
plzz help me in the code asap........I need help asap...

 

[FvM]

You forgot to post the full error message and/or mark the error line in code.

 

[Gorgon]

From where I am, it looks like your error #2 is a result of the error #1. You can't continue with the debug generation without the output from the compiler/linker? This output is not generated due to the error #1.