Exemplo n.º 1
0
void dsp_process_init(int cpu_hz, int hsb_hz, int pba_hz, int pbb_hz)
{
	// Initialize TPA6130
	tpa6130_init();

	// Initialize DAC that send audio to TPA6130
	tpa6130_dac_start(DAC_SAMPLING_RATE, DAC_NUM_CHANNELS,
			DAC_BITS_PER_SAMPLE, DAC_SWAP_CHANNELS,
			audio_callback, AUDIO_DAC_RELOAD_CB,
			FOSC0);

	tpa6130_set_volume(0x20);
	tpa6130_get_volume();

	signal_source_init(&signal1_generator, 433, 20000);
	signal_source_init(&signal2_generator, 2000, 10000);

	current_stereo_out_buf = stereo_out_buf1;
	signal_in_buf = signal_pre_filter_buf + FIR_NUM_COEF;
	filter_restore_default();

	/* Fill the initial buffer for the hamming window with ones. This buffer
	 * will then be multiplied by the hamming window.
	 */
	dsp16_gen_step(fft_window, BUFFER_LENGTH, DSP16_Q(1.), DSP16_Q(1.), 0);
	dsp16_win_hamm(fft_window, fft_window, BUFFER_LENGTH);

	/* Run the interrupt handler manually once to start the ABDAC */
	dac_reload_callback();
}
Exemplo n.º 2
0
void audio_callback(U32 arg)
{
  if( arg == AUDIO_DAC_OUT_OF_SAMPLE_CB )
  {
    dac_overrun_callback();
  }

  else if( arg == AUDIO_DAC_RELOAD_CB )
  {
    dac_reload_callback();
  }

  else if( arg == AUDIO_ADC_OUT_OF_SAMPLE_CB )
  {
  }

  else if( arg == AUDIO_ADC_RELOAD_CB )
  {
  }
}
Exemplo n.º 3
0
void master_callback(uint32_t arg)
{
  if( arg == AUDIO_DAC_OUT_OF_SAMPLE_CB )
  {
    dac_overrun_callback();
  }

  else if( arg == AUDIO_DAC_RELOAD_CB )
  {
    dac_reload_callback();
  }

  else if( arg == AUDIO_ADC_OUT_OF_SAMPLE_CB )
  {
    adc_underrun_callback();;
  }

  else if( arg == AUDIO_ADC_RELOAD_CB )
  {
    adc_reload_callback();;
  }
}