Definition at line 119 of file adc.c. References AD_READIN_COUNT, and AD_REF_EXT. Referenced by current_Init(), current_Update(), current_UpdateAvg(), current_UpdateSum(), main(), switch_Get(), temp_Init(), temp_Update(), voltage_Init(), voltage_Update(), and voltage_UpdateAvg(). {
UINT8 i;
UINT16 retval;
ADMUX = AD_REF_EXT | u8Channel; /* select channel */
ADCSRA |= (1<<ADEN); /* activate ADC */
/* dummy read */
ADCSRA |= (1<<ADSC); /* read ADC */
while (ADCSRA & (1<<ADSC))
{
asm("nop"); /* wait for conversion end */
}
retval = ADCW;
/* actual meassure (averaged) */
retval = 0U;
for(i=0U; i<AD_READIN_COUNT; i++)
{
ADCSRA |= (1<<ADSC); /* read ADC */
while (ADCSRA & (1<<ADSC))
{
asm("nop"); /* wait for conversion end */
}
retval += ADCW; /* add results */
}
ADCSRA &= ~(1<<ADEN); /* deactivate ADC */
retval /= AD_READIN_COUNT; /* calculate average value */
return retval;
} /* End: adc_Read() */
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