/** The MAIN loop. */
int main(void) {
// Turn off the CPU prescale.
CLKPR = 0x80;
CLKPR = 0x00;
// PORTA are general purpose inputs.
DDRA = 0x00;
PORTA = 0xff; // pull-ups all enabled
PORTD = 0xff;
DDRD = 0x00; // pull-ups all enabled
DDRF = 0x00; // These are ADC lines.
PORTF = 0x00;
usb_init();
// Set up Timer 0 to match compare every 1ms.
OCR0A = 250;
TCCR0A = 0x02; // CTC
TCCR0B = 0x03; // CK/64 (64 * 250 == 16000)
sei();
char line_buf[128] = {};
uint8_t line_len = 0;
uint8_t usb_ready = 0;
while (1) {
wdt_reset();
g_main_loop_count++;
if (usb_configured() && (usb_serial_get_control() & USB_SERIAL_DTR)) {
if (!usb_ready) {
usb_ready = 1;
strcpy_P(line_buf, PSTR("!GNR WELCOME " DEV_VERSION EOL));
usb_serial_write((uint8_t*)line_buf, strlen(line_buf));
line_len = 0;
}
} else {
stream_stop_all();
usb_serial_flush_input();
usb_ready = 0;
line_len = 0;
g_arm_code = 0;
}
if (usb_serial_available()) {
int16_t c = usb_serial_getchar();
if (c == '\r' || c == '\n') {
line_buf[line_len] = 0;
handle_line(line_buf);
if (g_arm_code) { g_arm_timer = ARM_TIMEOUT_MS; }
line_len = 0;
} else {
line_buf[line_len++] = c & 0xff;
if ((line_len + 1) >= sizeof(line_buf)) {
/* Clobber the first byte so that this line will be reported
as an error. */
line_buf[0] = MAGIC_OVERRUN_CODE;
line_len--;
}
}
}
if (TIFR0 & (1 << OCF0A)) {
TIFR0 |= (1 << OCF0A);
g_timer++;
stream_timer_update();
hit_timer_update();
g_main_loop_count = (uint16_t) (((uint32_t) g_main_loop_count) * 7 / 8);
}
stream_poll();
usb_poll();
hit_poll();
}
}
/* Call this function as a thread to handle playback. Playback will
stop and this thread will return when you call sndmp3_shutdown(). */
static void sndmp3_thread() {
int sj;
/* Main command loop */
while(sndmp3_status != STATUS_QUIT) {
switch(sndmp3_status) {
case STATUS_INIT:
sndmp3_status = STATUS_READY;
break;
case STATUS_READY:
printf("sndserver: waiting on semaphore\r\n");
sem_wait(sndmp3_halt_sem);
printf("sndserver: released from semaphore\r\n");
break;
case STATUS_STARTING:
/* Initialize streaming driver */
if (stream_init(mpglib_callback) < 0) {
sndmp3_status = STATUS_READY;
} else {
/* stream_start(decinfo.samprate, decinfo.channels - 1); */
stream_start(44100, 1);
sndmp3_status = STATUS_PLAYING;
}
break;
case STATUS_REINIT:
/* Re-initialize streaming driver */
stream_init(NULL);
sndmp3_status = STATUS_READY;
break;
case STATUS_PLAYING: {
sj = jiffies;
if (stream_poll() < 0) {
if (sndmp3_loop) {
printf("sndserver: restarting '%s'\r\n", mp3_last_fn);
if (mpglib_init(mp3_last_fn) < 0) {
sndmp3_status = STATUS_STOPPING;
mp3_last_fn[0] = 0;
}
} else {
printf("sndserver: not restarting\r\n");
stream_stop();
sndmp3_status = STATUS_READY;
mp3_last_fn[0] = 0;
}
// stream_start();
}
if (sj == jiffies)
thd_pass();
break;
}
case STATUS_STOPPING:
stream_stop();
sndmp3_status = STATUS_READY;
break;
}
}
/* Done: clean up */
mpglib_shutdown();
stream_shutdown();
sndmp3_status = STATUS_ZOMBIE;
}
