Definice maker
#define	ADC_CHANNEL_0 0
#define	ADC_CHANNEL_1 1
#define	ADC_CHANNEL_2 2
#define	ADC_CHANNEL_3 3
#define	ADC_CHANNEL_4 4
#define	ADC_CHANNEL_5 5
#define	ADC_CHANNEL_6 6
#define	ADC_CHANNEL_7 7
Funkce
void	ADC_Initialize (AT91S_ADC *pAdc, unsigned char idAdc, unsigned char trgEn, unsigned char trgSel, unsigned char sleepMode, unsigned char resolution, unsigned int mckClock, unsigned int adcClock, unsigned int startupTime, unsigned int sampleAndHoldTime)
unsigned int	ADC_GetModeReg (AT91S_ADC *pAdc)
void	ADC_EnableChannel (AT91S_ADC *pAdc, unsigned int channel)
void	ADC_DisableChannel (AT91S_ADC *pAdc, unsigned int channel)
unsigned int	ADC_GetChannelStatus (AT91S_ADC *pAdc)
void	ADC_StartConversion (AT91S_ADC *pAdc)
void	ADC_SoftReset (AT91S_ADC *pAdc)
unsigned int	ADC_GetLastConvertedData (AT91S_ADC *pAdc)
unsigned int	ADC_GetConvertedData (AT91S_ADC *pAdc, unsigned int channel)
void	ADC_EnableIt (AT91S_ADC *pAdc, unsigned int flag)
void	ADC_EnableDataReadyIt (AT91S_ADC *pAdc)
void	ADC_DisableIt (AT91S_ADC *pAdc, unsigned int flag)
unsigned int	ADC_GetStatus (AT91S_ADC *pAdc)
unsigned int	ADC_GetInterruptMaskStatus (AT91S_ADC *pAdc)
unsigned int	ADC_IsInterruptMasked (AT91S_ADC *pAdc, unsigned int flag)
unsigned int	ADC_IsStatusSet (AT91S_ADC *pAdc, unsigned int flag)
unsigned char	ADC_IsChannelInterruptStatusSet (unsigned int adc_sr, unsigned int channel)

Detailní popis

Purpose

Interface for configuration the Analog-to-Digital Converter (ADC) peripheral.

Usage

Configurate the pins for ADC
Initialize the ADC with ADC_Initialize().
Select the active channel using ADC_EnableChannel()
Start the conversion with ADC_StartConversion()

Definice v souboru adc.h.

Dokumentace funkcí

void ADC_DisableChannel	(	AT91S_ADC *	pAdc,
		unsigned int	channel
	)

Disable Channel

Parametry:

pAdc	Pointer to an AT91S_ADC instance.
channel	channel to disable

Definice je uvedena na řádku 161 v souboru adc.c.

Odkazuje se na ASSERT.

void ADC_DisableIt	(	AT91S_ADC *	pAdc,
		unsigned int	flag
	)

Disable ADC interrupt

Parametry:

pAdc	Pointer to an AT91S_ADC instance.
flag	IT to be disabled

Definice je uvedena na řádku 276 v souboru adc.c.

Odkazuje se na ASSERT.

void ADC_EnableChannel	(	AT91S_ADC *	pAdc,
		unsigned int	channel
	)

Enable Channel

Parametry:

pAdc	Pointer to an AT91S_ADC instance.
channel	channel to enable

Definice je uvedena na řádku 149 v souboru adc.c.

Odkazuje se na ASSERT.

void ADC_EnableDataReadyIt ( AT91S_ADC * pAdc )

Enable ADC Data Ready interrupt

Parametry:

pAdc	Pointer to an AT91S_ADC instance.

Definice je uvedena na řádku 267 v souboru adc.c.

void ADC_EnableIt	(	AT91S_ADC *	pAdc,
		unsigned int	flag
	)

Enable ADC interrupt

Parametry:

pAdc	Pointer to an AT91S_ADC instance.
flag	IT to be enabled

Definice je uvedena na řádku 247 v souboru adc.c.

Odkazuje se na ASSERT.

unsigned int ADC_GetChannelStatus ( AT91S_ADC * pAdc )

Return chanel status

Parametry:

pAdc	Pointer to an AT91S_ADC instance.

Návratová hodnota:: ADC Channel Status Register

Definice je uvedena na řádku 173 v souboru adc.c.

unsigned int ADC_GetConvertedData	(	AT91S_ADC *	pAdc,
		unsigned int	channel
	)

Return the Channel Converted Data

Parametry:

pAdc	Pointer to an AT91S_ADC instance.
channel	channel to get converted value

Návratová hodnota:: Channel converted data of the specified channel

Definice je uvedena na řádku 208 v souboru adc.c.

Odkazuje se na ASSERT.

unsigned int ADC_GetInterruptMaskStatus ( AT91S_ADC * pAdc )

Return ADC Interrupt Mask Status

Parametry:

pAdc	Pointer to an AT91S_ADC instance.

Návratová hodnota:: ADC Interrupt Mask Register

Definice je uvedena na řádku 306 v souboru adc.c.

unsigned int ADC_GetLastConvertedData ( AT91S_ADC * pAdc )

Return the Last Converted Data

Parametry:

pAdc	Pointer to an AT91S_ADC instance.

Návratová hodnota:: Last Converted Data

Definice je uvedena na řádku 198 v souboru adc.c.

unsigned int ADC_GetModeReg ( AT91S_ADC * pAdc )

Return the Mode Register of the ADC controller value

Parametry:

pAdc	Pointer to an AT91S_ADC instance.

Návratová hodnota:: ADC Mode register

Definice je uvedena na řádku 140 v souboru adc.c.

unsigned int ADC_GetStatus ( AT91S_ADC * pAdc )

Return ADC Interrupt Status

Parametry:

pAdc	Pointer to an AT91S_ADC instance.

Návratová hodnota:: ADC Stats register

Definice je uvedena na řádku 297 v souboru adc.c.

void ADC_Initialize	(	AT91S_ADC *	pAdc,
		unsigned char	idAdc,
		unsigned char	trgEn,
		unsigned char	trgSel,
		unsigned char	sleepMode,
		unsigned char	resolution,
		unsigned int	mckClock,
		unsigned int	adcClock,
		unsigned int	startupTime,
		unsigned int	sampleAndHoldTime
	)

Initialize the ADC controller

Parametry:

pAdc	Pointer to an AT91S_ADC instance.
idAdc	???
trgEn	trigger mode, software or Hardware
trgSel	hardware trigger selection
sleepMode	sleep mode selection
resolution	resolution selection 8 bits or 10 bits
mckClock	value of MCK in Hz
adcClock	value of the ADC clock in Hz
startupTime	value of the start up time (in �s) (see datasheet)
sampleAndHoldTime	(in ns)

 Example:
 5 MHz operation, 20�s startup time, 600ns track and hold time
 PRESCAL: Prescaler Rate Selection ADCClock = MCK / ( (PRESCAL+1) * 2 )
 PRESCAL = [MCK / (ADCClock * 2)] -1 = [48/(5*2)]-1 = 3,8
 PRESCAL =  4 -> 48/((4+1)*2) = 48/10 = 4.8MHz
 48/((3+1)*2) = 48/8 = 6MHz
 Startup Time = (STARTUP+1) * 8 / ADCClock
 STARTUP = [(Startup Time * ADCClock)/8]-1 = [(20 10e-6 * 5000000)/8]-1 = 11,5
 STARTUP = 11 -> (11+1)*8/48000000 = 96/4800000 = 20�s

 Sample & Hold Time = (SHTIM+1) / ADCClock
 SHTIM = (HoldTime * ADCClock)-1 = (600 10e-9 * 5000000)-1 = 2
 SHTIM   =  2 -> (2+1)/4800000 = 1/1200000 = 833ns

Definice je uvedena na řádku 70 v souboru adc.c.

Odkazuje se na ADC_Initialize(), ADC_STARTUP_TIME_MAX, ADC_TRACK_HOLD_TIME_MIN, ASSERT a TRACE_DEBUG.

Používá se v ADC_Initialize() a main().

unsigned char ADC_IsChannelInterruptStatusSet	(	unsigned int	adc_sr,
		unsigned int	channel
	)

Test if ADC channel interrupt Status is Set

Parametry:

adc_sr	Value of SR register
channel	Channel to be tested

Návratová hodnota:: 1 if interrupt status is set, otherwise 0

Definice je uvedena na řádku 337 v souboru adc.c.

unsigned int ADC_IsInterruptMasked	(	AT91S_ADC *	pAdc,
		unsigned int	flag
	)

Test if ADC Interrupt is Masked

Parametry:

pAdc	Pointer to an AT91S_ADC instance.
flag	flag to be tested

Návratová hodnota:: 1 if interrupt is masked, otherwise 0

Definice je uvedena na řádku 316 v souboru adc.c.

unsigned int ADC_IsStatusSet	(	AT91S_ADC *	pAdc,
		unsigned int	flag
	)

Test if ADC Status is Set

Parametry:

pAdc	Pointer to an AT91S_ADC instance.
flag	flag to be tested

Návratová hodnota:: 1 if the staus is set; 0 otherwise

Definice je uvedena na řádku 326 v souboru adc.c.

void ADC_SoftReset ( AT91S_ADC * pAdc )

Software reset

Parametry:

pAdc	Pointer to an AT91S_ADC instance.

Definice je uvedena na řádku 189 v souboru adc.c.

void ADC_StartConversion ( AT91S_ADC * pAdc )

Software request for a analog to digital conversion

Parametry:

pAdc	Pointer to an AT91S_ADC instance.

Definice je uvedena na řádku 181 v souboru adc.c.

Definice maker

Funkce

Detailní popis

Dokumentace funkcí