int main() {
ioinit();
timer2_init();
timer2_overflow_hook = timer2_hook;
timer1_init();
_delay_ms(100);
spi_init();
sound_reset();
usart_init(1);// usart_init(23); // 9600bps
spdif_configure();
ad1955_configure();
ad1955_mute();
#define NO_NOISE_MEASURE
#ifdef NOISE_MEASURE
ad1955_unmute();
cli();
set_sleep_mode(SLEEP_MODE_PWR_DOWN);
for(;;) {
sleep_mode();
}
#endif
spdif_selectChannel(1);
spdif_dumpRegisters();
printf("\n\nSVODAC V%s\n", idstring);
for (;;) {
if (main_state_machine() == STATE_READY) {
if ((REQUEST_STATUS & _BV(REQUEST_MUTE)) != 0) {
ad1955_mute();
} else if ((REQUEST_STATUS & _BV(REQUEST_UNMUTE)) != 0) {
ad1955_unmute();
}
if ((REQUEST_STATUS & _BV(REQUEST_STOP)) != 0) {
//printf("STOP");
spdif_stop();
} else if ((REQUEST_STATUS & _BV(REQUEST_RUN)) != 0) {
//printf("RUN");
spdif_run();
}
REQUEST_STATUS = 0;
sleep_mode();
}
}
return 0; // make happy
}
static int nxp_spdif_trigger(struct snd_pcm_substream *substream,
int cmd, struct snd_soc_dai *dai)
{
struct nxp_spdif_snd_param *par = snd_soc_dai_get_drvdata(dai);
int stream = substream->stream;
pr_debug("%s: %s cmd=%d\n", __func__, STREAM_STR(stream), cmd);
switch (cmd) {
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_START:
spdif_start(par, stream);
break;
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
case SNDRV_PCM_TRIGGER_STOP:
spdif_stop(par, stream);
break;
default:
return -EINVAL;
}
return 0;
}
static void nxp_spdif_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct nxp_spdif_snd_param *par = snd_soc_dai_get_drvdata(dai);
spdif_stop(par, substream->stream);
}
