ADC

Analog to digital converter functions. More...

Functions
void	analog_init (littleWire *lwHandle, unsigned char voltageRef)
unsigned int	analogRead (littleWire *lwHandle, unsigned char channel)

Detailed Description

Analog to digital converter functions.

Function Documentation

void analog_init	(	littleWire *	lwHandle,
		unsigned char	voltageRef
	)

Initialize the analog module. VREF_VCC is the standard voltage coming from the USB plug
Others are the Attiny's internal voltage references.

Parameters

lwHandle	littleWire device pointer
voltageRef	(VREF_VCC , VREF_110mV or VREF_2560mV )

Returns

(none)

Definition at line 205 of file littleWire.c.

unsigned int analogRead	(	littleWire *	lwHandle,
		unsigned char	channel
	)

Read analog voltage. Analog voltage reading from ADC_PIN3 isn't advised (it is a bit noisy) but supported. Use it at your own risk.
For more about internal temperature sensor, look at the Attiny85 datasheet.

Parameters

lwHandle	littleWire device pointer
channel	Source of ADC reading (ADC_PIN2 , ADC_PIN3 or ADC_TEMP_SENS )

Returns

10 bit ADC result

Definition at line 210 of file littleWire.c.