access to ADC and analog multiplexer More...

Enumerations
enum	hl_adc_channel { adc_chan0, adc_ref }
	decide which channel to sample More...
Functions
void	hl_adc_init (void)
	prepare ADC for use
void	hl_adc_off (void)
	switch off ADC
void	hl_adc_select (hl_adc_channel chan)
	select channel to sample
void	hl_adc_start (void)
	start ADC sampling process
uint8_t	hl_adc_isready (void)
	check whether sampling process has finished
void	hl_adc_StartNwait4conversion (void)
	Do a polled AD measurement.
uint16_t	hl_adc_result (void)
	get result from ADC

Detailed Description

access to ADC and analog multiplexer

Enumeration Type Documentation

decide which channel to sample

available channels:

Enumerator:

adc_chan0	ADC0, connected to battery via 1 MOhm/1 MOhm voltage divider
adc_ref	1.1 V internal reference voltage

             {
  adc_chan0,
  adc_ref,
} hl_adc_channel;

void hl_adc_init ( void )

prepare ADC for use

hl_adc_init() powers up the ADC, defines PF0 as analog input, sets the ADC prescaler and selects left-adjustment for the result.

void hl_adc_off ( void )

switch off ADC

hl_adc_off() powers down the ADC to conserve power between sampling.

void hl_adc_StartNwait4conversion ( void )

Do a polled AD measurement.

The function is doing a measurement w/o interrupt support