int main(){
float input_data;
int32 output_data;
//Configure hardware
codec_init();
fir_init(banda1,banda2,banda3,banda4,banda5);
while(1){
//Processing data
if(DSK6713_DIP_get(3)==0){
//Initialize processing
leds_output(LED_STATE_ACTIVE);
while(DSK6713_DIP_get(3)==0){
input_data = codec_read();
output_data = fir_filter(input_data);
codec_write(output_data);
}
}
//Waiting
else{
leds_output(LED_STATE_WATING);
}
}
}
/*
* load() - PRD that simulates a 20-25% dummy load on a 225MHz 6713 if
* DIP switch #1 is depressed. The thread is configured in
* the DSP/BIOS configuration tool under Scheduling --> PRD
* PRD_load. The period is set there at 10 ticks, which each tick
* corresponding to 1ms in real time.
*/
void load(void)
{
volatile Uint32 i;
if (!DSK6713_DIP_get(1))
for (i = 0; i < 30000; i++);
}
/*
* blinkLED() - Periodic thread (PRD) that toggles LED #0 every 500ms if
* DIP switch #0 is depressed. The thread is configured
* in the DSP/BIOS configuration tool under Scheduling -->
* PRD --> PRD_blinkLed. The period is set there at 500
* ticks, with each tick corresponding to 1ms in real
* time.
*/
void blinkLED(void)
{
/* Toggle LED #0 if DIP switch #0 is off (depressed) */
if (!DSK6713_DIP_get(0))
DSK6713_LED_toggle(0);
}
interrupt void c_int11() //interrupt service routine
{
// THIS CODE IS FOR THE FIRST AND SECOND PARTS
output_left_sample((sine_table[(short)loopindexlow] + sine_table[(short)loopindexhigh])/10);
//AIC23_data.channel[LEFT] = sine_table[(short)loopindexlow];
//AIC23_data.channel[RIGHT] = sine_table[(short)loopindexhigh];
//output_sample(AIC23_data.uint);
//output_left_sample(sine_table[(short)loopindexlow]);
//output_right_sample(sine_table[(short)loopindexhigh]);
/*loopindexlow += STEP_697;
if (loopindexlow > (float)TABLESIZE)
loopindexlow -= (float)TABLESIZE;
loopindexhigh += STEP_1477;
if (loopindexhigh > (float)TABLESIZE)
loopindexhigh -= (float)TABLESIZE;*/
// THIS CODE IS FOR THE THIRD PART
//printf("Inside the interrupt\n");
if(inLoop == 1)
{
output_left_sample(sine_table[(short)loopindexlow] + sine_table[(short)loopindexhigh]);
if( ( dip0state == 1 ) && ( dip1state == 1 ) && ( dip2state == 1 ) && ( dip3state == 1 ) )
{
// output a 0
loopindexlow += STEP_941;
if (loopindexlow > (float)TABLESIZE)
loopindexlow -= (float)TABLESIZE;
loopindexhigh += STEP_1336;
if (loopindexhigh > (float)TABLESIZE)
loopindexhigh -= (float)TABLESIZE;
}
else if( ( dip0state == 1 ) && ( dip1state == 1 ) && ( dip2state == 1 ) && ( dip3state == 0 ) )
{
// output a 1
loopindexlow += STEP_697;
if (loopindexlow > (float)TABLESIZE)
loopindexlow -= (float)TABLESIZE;
loopindexhigh += STEP_1209;
if (loopindexhigh > (float)TABLESIZE)
loopindexhigh -= (float)TABLESIZE;
}
else if( ( dip0state == 1 ) && ( dip1state == 1 ) && ( dip2state == 0 ) && ( dip3state == 1 ) )
{
// output a 2
loopindexlow += STEP_697;
if (loopindexlow > (float)TABLESIZE)
loopindexlow -= (float)TABLESIZE;
loopindexhigh += STEP_1336;
if (loopindexhigh > (float)TABLESIZE)
loopindexhigh -= (float)TABLESIZE;
}
else if( ( dip0state == 1 ) && ( dip1state == 1 ) && ( dip2state == 0 ) && ( dip3state == 0 ) )
{
// output a 3
loopindexlow += STEP_697;
if (loopindexlow > (float)TABLESIZE)
loopindexlow -= (float)TABLESIZE;
loopindexhigh += STEP_1477;
if (loopindexhigh > (float)TABLESIZE)
loopindexhigh -= (float)TABLESIZE;
}
else if( ( dip0state == 1 ) && ( dip1state == 0 ) && ( dip2state == 1 ) && ( dip3state == 1 ) )
{
// output a 4
loopindexlow += STEP_770;
if (loopindexlow > (float)TABLESIZE)
loopindexlow -= (float)TABLESIZE;
loopindexhigh += STEP_1209;
if (loopindexhigh > (float)TABLESIZE)
loopindexhigh -= (float)TABLESIZE;
}
else if( ( dip0state == 1 ) && ( dip1state == 0 ) && ( dip2state == 1 ) && ( dip3state == 0 ) )
{
// output a 5
loopindexlow += STEP_770;
if (loopindexlow > (float)TABLESIZE)
loopindexlow -= (float)TABLESIZE;
loopindexhigh += STEP_1336;
if (loopindexhigh > (float)TABLESIZE)
loopindexhigh -= (float)TABLESIZE;
}
else if( ( dip0state == 1 ) && ( dip1state == 0 ) && ( dip2state == 0 ) && ( dip3state == 1 ) )
{
// output a 6
loopindexlow += STEP_770;
if (loopindexlow > (float)TABLESIZE)
loopindexlow -= (float)TABLESIZE;
loopindexhigh += STEP_1477;
if (loopindexhigh > (float)TABLESIZE)
loopindexhigh -= (float)TABLESIZE;
}
else if( ( dip0state == 1 ) && ( dip1state == 0 ) && ( dip2state == 0 ) && ( dip3state == 0 ) )
{
// output a 7
loopindexlow += STEP_852;
if (loopindexlow > (float)TABLESIZE)
loopindexlow -= (float)TABLESIZE;
loopindexhigh += STEP_1209;
if (loopindexhigh > (float)TABLESIZE)
loopindexhigh -= (float)TABLESIZE;
}
else if( ( dip0state == 0 ) && ( dip1state == 1 ) && ( dip2state == 1 ) && ( dip3state == 1 ) )
{
// output a 8
loopindexlow += STEP_852;
if (loopindexlow > (float)TABLESIZE)
loopindexlow -= (float)TABLESIZE;
loopindexhigh += STEP_1336;
if (loopindexhigh > (float)TABLESIZE)
loopindexhigh -= (float)TABLESIZE;
}
else if( ( dip0state == 0 ) && ( dip1state == 1 ) && ( dip2state == 1 ) && ( dip3state == 0 ) )
{
// output a 9
loopindexlow += STEP_852;
if (loopindexlow > (float)TABLESIZE)
loopindexlow -= (float)TABLESIZE;
loopindexhigh += STEP_1477;
if (loopindexhigh > (float)TABLESIZE)
loopindexhigh -= (float)TABLESIZE;
}
else if( ( dip0state == 0 ) && ( dip1state == 1 ) && ( dip2state == 0 ) && ( dip3state == 1 ) )
{
// output a *
loopindexlow += STEP_941;
if (loopindexlow > (float)TABLESIZE)
loopindexlow -= (float)TABLESIZE;
loopindexhigh += STEP_1209;
if (loopindexhigh > (float)TABLESIZE)
loopindexhigh -= (float)TABLESIZE;
}
else if( ( dip0state == 0 ) && ( dip1state == 1 ) && ( dip2state == 0 ) && ( dip3state == 0 ) )
{
// output a #
loopindexlow += STEP_941;
if (loopindexlow > (float)TABLESIZE)
loopindexlow -= (float)TABLESIZE;
loopindexhigh += STEP_1477;
if (loopindexhigh > (float)TABLESIZE)
loopindexhigh -= (float)TABLESIZE;
}
else
{
// invalid input
}
toneCounter++;
if( toneCounter > 32000 )
{
toneCounter = 0;
inLoop = 0;
}
}
else
{
if( ( DSK6713_DIP_get(0) == dip0state ) && ( DSK6713_DIP_get(1) == dip1state ) && ( DSK6713_DIP_get(2) == dip2state ) && ( DSK6713_DIP_get(3) == dip3state ) )
{
startCounter++;
}
else
{
startCounter = 0;
dip0state = DSK6713_DIP_get(0);
dip1state = DSK6713_DIP_get(1);
dip2state = DSK6713_DIP_get(2);
dip3state = DSK6713_DIP_get(3);
}
if( startCounter > 32000 )
{
startCounter = 0;
inLoop = 1;
loopindexlow = 0.0;
loopindexhigh = 0.0;
}
}
return; //return from interrupt
}
