Analog To Digital Converter

Control and manage the on board PIC A/D converter. More...

Defines
#define	ADC_REF   0
	PIC ADC Channel number of the reference voltage.
#define	ADC_MAINBUS   1
	PIC ADC Channel number of the main bus voltage.
#define	MAIN_BUS_VOLT_OFFSET   20
	Input diode drop in units of 0.01 volts.
Functions
void	adcInit ()
	Intialize the ADC subsystem.
uint16_t	adcGetMainBusVolt ()
	Filtered main bus voltage in 10mV resolution.
uint16_t	adcRawBusVolt ()
	Get the current ADC value for the main bus voltage.
uint16_t	adcRawRefVolt ()
	Get the current ADC value for the reference source voltage.
void	adcUpdate (void)
	Read and filter the ADC channels for bus voltages.
Variables
uint16_t	adcMainBusVolt
	Filtered voltages using a single pole, low pass filter.

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Detailed Description

Control and manage the on board PIC A/D converter.

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Define Documentation

#define ADC_MAINBUS   1

PIC ADC Channel number of the main bus voltage.

Definition at line 406 of file PicoBeacon.c.

Referenced by adcRawBusVolt(), and adcUpdate().

#define ADC_REF   0

PIC ADC Channel number of the reference voltage.

Definition at line 403 of file PicoBeacon.c.

Referenced by adcRawRefVolt().

#define MAIN_BUS_VOLT_OFFSET   20

Input diode drop in units of 0.01 volts.

Definition at line 409 of file PicoBeacon.c.

Referenced by adcGetMainBusVolt().

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Function Documentation

uint16_t adcGetMainBusVolt

(

)

Filtered main bus voltage in 10mV resolution.

Returns:

voltage in 10mV steps

Definition at line 429 of file PicoBeacon.c.

References adcMainBusVolt, and MAIN_BUS_VOLT_OFFSET.

Referenced by tncStatusPacket().

void adcInit

(

)

Intialize the ADC subsystem.

Definition at line 414 of file PicoBeacon.c.

References adcMainBusVolt.

Referenced by main().

uint16_t adcRawBusVolt

(

)

Get the current ADC value for the main bus voltage.

Returns:

ADC value in the range 0 to 1023

Definition at line 445 of file PicoBeacon.c.

References ADC_MAINBUS.

Referenced by sysLogVoltage().

uint16_t adcRawRefVolt

(

)

Get the current ADC value for the reference source voltage.

Returns:

ADC value in the range 0 to 1023

Definition at line 457 of file PicoBeacon.c.

References ADC_REF.

Referenced by sysLogVoltage().

void adcUpdate

(

void

)

Read and filter the ADC channels for bus voltages.

Definition at line 467 of file PicoBeacon.c.

References ADC_MAINBUS, and adcMainBusVolt.

Referenced by main().

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Variable Documentation

uint16_t adcMainBusVolt

Filtered voltages using a single pole, low pass filter.

Definition at line 400 of file PicoBeacon.c.

Referenced by adcGetMainBusVolt(), adcInit(), and adcUpdate().