/**
* \brief Read the value an analog channel
*
* A normal conversion takes 13 ADC clock cycles. With a clock frequency
* of for example 200 kHz a conversion therefore needs 65 microseconds.
* This time increases with a lower frequency.
*
* Available on all ATmegas.
*/
static inline uint16_t
readChannel(uint8_t channel)
{
if (!startConversion(channel)) return 0;
while (!isInterruptFlagSet()) {
// wait until the conversion is finished
}
return getDataRegister();
}
///@description Perform a complete conversion. Should only be used when waiting isn't a problem.
uint16_t ANALOG::read(){
//start conversion
start();
//wait for conversion to finish (interrupt flag is set)
while( isReading() && !isInterruptFlagSet());
clearFlag();
return (ADC);
}
/**
* \brief Check if the conversion is finished
*
* Available on all ATmegas.
*/
static inline bool
isFinished()
{
return isInterruptFlagSet();
}
