voltage.c File Reference

Functions to meassure battery and reference voltage. More...

#include <avr/io.h>
#include "xtypes.h"
#include "global.h"
#include "adc.h"
#include "safety.h"
#include "voltage.h"

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Defines
#define	EXPORT
#define	AVG_COUNT   40U
	Defines the number of voltage readings used for calculating the average voltage.
Functions
void	voltage_Init (void)
	Init function of module <voltage.c>.
void	voltage_Update (void)
	Read and update ADC values for battery voltage and reference voltage.
void	voltage_UpdateAvg (void)
	Reads the battery voltage and recalculates the average value.
UINT16	voltage_GetValue (void)
	Returns the battery voltage.
UINT16	voltage_GetAvg (void)
	Returns average battery voltage.
UINT16	voltage_GetRef (void)
	Returns reference voltage.
Variables
static UINT16	mg_u16Ref = 0U
	UINT16 variable to store the ADC value of reference voltage.
static UINT16	mg_u16Value = 0U
	UINT16 variable to store the ADC value of battery voltage.
static UINT16	mg_au16Data [AVG_COUNT]
	UINT16 variable to store the ADC values of battery voltage for averaging.
static UINT16	mg_u16Avg = 0U
	UINT16 variable to store averaged value of battery voltage.
static UINT8	mg_u8Idx = 0U
	UINT8 variable to keep the ring array index position.

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Detailed Description

Author:

Philipp Bank

Copyright:

Creative Commons by-nc-sa 3.0 (http://creativecommons.org/licenses/by-nc-sa/3.0/)

This module provides service-level functions to get the momentary and averaged battery voltage and the reference voltage.

Definition in file voltage.c.