int main(void)
{
cli();
TCCR1A = 0x00;
TCNT1=0x0000;
TCCR1B = 0x04;
TIMSK1=0x01;
sei();
int c=0; //used to toggle the channel
DDRD = (1<<DDD6)|(1<<DDD5);
adc_init();
while(1)
{
if(c==0){ //it works for channel 0
adc_read();
a&=0b00000000;
c=1;
}
else{ //it works for channel 1
adc_read1();
a&=0b00000001;
c=0;
}
_delay_ms(500);
//enterSleep();
}
}
int main(void)
{
volatile SAMPLE values[NR_CHANNELS];
volatile uint16_t seqno = 0;
volatile uint16_t count = 0;
int idle, channel;
ocp_init();
shm_init();
WR_MAGIC( 0x0ADCDA8A );
WR_SEQNO( seqno );
while (1)
{
// Read ADC data into values
values[0] = adc_read( 0, 0, 0 );
values[1] = adc_read1( 0, 0, 0 );
values[2] = adc_read2( 0, 0, 0 );
values[3] = adc_read3( 0, 0, 0 );
// Write into shared memory
for ( channel = 0; channel < NR_CHANNELS; ++channel ) {
WR_DATA( seqno, channel, count, values[channel] );
}
// Increment and update sample counts
count++;
WR_COUNT( count );
if ( count >= SAMPLES_PER_MSG ) {
count = 0;
WR_COUNT( count );
seqno++;
WR_SEQNO( seqno );
// Signal to host that data is ready for reading
for ( idle=0; idle < 2; ++idle ) {
seqno = seqno;
}
generate_host_interrupt( PRU0_ARM_DONE_INTERRUPT + 16 );
}
// Idle some until time for the next sample
//
// We want a delay of abuot 100us (10kHz) between samples. Since
// the PRU runs at 200MHz (5ns per op), we want 20000 ops for
// an approximate delay of 100us. Since one iteration is
// approximately 10 assembly instructions, counting up to 2000
// for now.
for ( idle=0; idle < 2000; ++idle ) {
seqno = seqno;
}
}
__halt();
return 0;
}
