ADC.c File Reference

ADC drivers for MPC5604P. More...

#include "Compile_Options.h"
#include "derivative.h"
#include "ADC.h"
#include <limits.h>

Functions
uint8_t	u8fnADCConvert (const uint8_t cu8ADCInstance, const uint8_t cu8ADCCh, uint16_t *pu16Result)
	Launches ADC to perform a conversion for a given channel.
uint8_t	u8fnADCConfig (uint8_t u8Instance, ADCConfig_t *ptADCConfig)
	Configures a particular instance for operation according to passed argument.
uint8_t	u8fnADCChannelConfig (const ADCChConfig_t *tADCChConfig, const uint16_t *pu16Results)
	Configures a particular channel for a programmed conversion.
uint8_t	u8fnADCReadChannel (uint8_t u8Instance, uint8_t u8Channel, uint16_t *pu16ADCResult)
	Performs exactly what it names suggests.
uint8_t	u8fnADCStatus (uint8_t u8Instance)
	Returns the HW status of an instance.
uint8_t	u8fnADCNormalConversionEnable (uint8_t u8Instance, uint8_t u8Enable)
	Starts a normal (scheduled) conversion.
void	vfnADC0EoCIsr (void)
	Channels an end of conversion isr from ADC0 into the general ADC end of conversion Isr with its proper argument.
void	vfnADC1EoCIsr (void)
	Channels an end of conversion isr from ADC1 into the general ADC end of conversion Isr with its proper argument.
void	vfnADC0ErrIsr (void)
	Channels a error isr from ADC0 into the general ADC error Isr with its proper argument.
void	vfnADC1ErrIsr (void)
	Channels a error isr from ADC1 into the general ADC error Isr with its proper argument.
void	vfnADC0WatchDogIsr (void)
	Channels a watchdog isr from ADC0 into the general ADC Watchdog Isr with its proper argument.
void	vfnADC1WatchDogIsr (void)
	Channels a watchdog isr from ADC1 into the general ADC Watchdog Isr with its proper argument.
Variables
const ADC_t	catADCInstanceList []
uint16_t *	gpu16ADCResults [(ADC_NO_MODULES *(ADC_CH_MAX+1u))]
uint16_t	gau16ADCChToRead [ADC_NO_MODULES]

---

Detailed Description

ADC drivers for MPC5604P.

Copyright (c) 2011 Freescale Semiconductor Freescale Confidential Proprietary

Author:

Freescale Semiconductor

SASD Automotive

R11515

Version:

Date:

Warning:

(If needed)

History:

---

Function Documentation

uint8_t u8fnADCChannelConfig	(	const ADCChConfig_t *	tADCChConfig,
		const uint16_t *	pu16Results
	)

Configures a particular channel for a programmed conversion.

Parameters:

tADCChConfig,:	pointer to tADCChConfig with the correct instance and channel to configure
pu16Results,:	Where to place the result once it's ready.

Returns:

Clear if no problems found; ADC_ERR_INVALID_CH if an invalid channel is referenced; ADC_ERR_ONGOING_CONV if there's an on-going request when triggered.

uint8_t u8fnADCConfig	(	uint8_t	u8Instance,
		ADCConfig_t *	ptADCConfig
	)

Configures a particular instance for operation according to passed argument.

Parameters:

u8Instance,:	ADC instance to associate this fn to.
ptADCConfig,:	Configuration settings as described by ADCConfig_t

Returns:

Clear if no problems found; ADC_ERR_BAD_INSTANCE if an non- existing instance is referenced.

uint8_t u8fnADCConvert	(	const uint8_t	cu8ADCInstance,
		const uint8_t	cu8ADCCh,
		uint16_t *	pu16Result
	)

Launches ADC to perform a conversion for a given channel.

Parameters:

cu8ADCInstance,:	ADC instance to associate this fn to.
cu8ADCCh,:	ADC channel for that particular instance.
pu16Result,:	10-bit result of the conversion.

Returns:

Clear if no problems found; ADC_ERR_BAD_INSTANCE if an non- existing instance is referenced; ADC_ERR_INVALID_CH if an invalid channel is referenced; ADC_ERR_ONGOING_CONV if there's an on-going request when triggered.

uint8_t u8fnADCNormalConversionEnable	(	uint8_t	u8Instance,
		uint8_t	u8Enable
	)

Starts a normal (scheduled) conversion.

Parameters:

u8Instance	Which ADC instance is going to be read.
u8Enable	zero for disable, non-zero for enable.

Returns:

Clear if no problems found; ADC_ERR_BAD_INSTANCE if an non- existing instance is referenced.

uint8_t u8fnADCReadChannel	(	uint8_t	u8Instance,
		uint8_t	u8Channel,
		uint16_t *	pu16ADCResult
	)

Performs exactly what it names suggests.

Parameters:

u8Instance,:	Which ADC instance is going to be read.
u8Channel,:	Which channel is going to be read.
pu16ADCResult	Where the result will be placed.

Returns:

Clear if no problems found; ADC_ERR_INVALID_CH if an invalid channel is referenced; ADC_ERR_ONGOING_CONV if there's an on-going request when triggered.

uint8_t u8fnADCStatus

(

uint8_t

u8Instance

)

Returns the HW status of an instance.

Parameters:

u8Instance,:

Which ADC instance is going to be read.

Returns:

ADCSTATUS as defined in the HW definition: ADC_ST_IDLE for IDLE; ADC_ST_POWER_DOWN for Power down; ADC_ST_WAIT for Wait; ADC_ST_SAMPLE for sampling; ADC_ST_CONVERSION for converting

void vfnADC0EoCIsr

(

void

)

Channels an end of conversion isr from ADC0 into the general ADC end of conversion Isr with its proper argument.

Parameters:

None

Returns:

Void.

void vfnADC0ErrIsr

(

void

)

Channels a error isr from ADC0 into the general ADC error Isr with its proper argument.

Parameters:

u8Instance

ADC instance.

Returns:

Void.

void vfnADC0WatchDogIsr

(

void

)

Channels a watchdog isr from ADC0 into the general ADC Watchdog Isr with its proper argument.

Parameters:

None

Returns:

Void.

void vfnADC1EoCIsr

(

void

)

Channels an end of conversion isr from ADC1 into the general ADC end of conversion Isr with its proper argument.

Parameters:

None

Returns:

Void.

void vfnADC1ErrIsr

(

void

)

Channels a error isr from ADC1 into the general ADC error Isr with its proper argument.

Parameters:

None

Returns:

Void.

void vfnADC1WatchDogIsr

(

void

)

Channels a watchdog isr from ADC1 into the general ADC Watchdog Isr with its proper argument.

Parameters:

None

Returns:

Void.

---

Variable Documentation

const ADC_t catADCInstanceList[]

Initial value:

 
{
  &ADC_0, &ADC_1
}

List of pointers to our ADC instances

uint16_t gau16ADCChToRead[ADC_NO_MODULES]

Mask of channels to be read by module

uint16_t* gpu16ADCResults[(ADC_NO_MODULES *(ADC_CH_MAX+1u))]

Container for read values (not in auto mode)