Functions
HAL_AnalogInputHandle	HAL_InitializeAnalogInputPort (HAL_PortHandle portHandle, const char allocationLocation, int32_t status)
	Initializes the analog input port using the given port object. More...

void	HAL_FreeAnalogInputPort (HAL_AnalogInputHandle analogPortHandle)
	Frees an analog input port. More...

HAL_Bool	HAL_CheckAnalogModule (int32_t module)
	Checks that the analog module number is valid. More...

HAL_Bool	HAL_CheckAnalogInputChannel (int32_t channel)
	Checks that the analog output channel number is valid. More...

void	HAL_SetAnalogInputSimDevice (HAL_AnalogInputHandle handle, HAL_SimDeviceHandle device)
	Indicates the analog input is used by a simulated device. More...

void	HAL_SetAnalogSampleRate (double samplesPerSecond, int32_t *status)
	Sets the sample rate. More...

double	HAL_GetAnalogSampleRate (int32_t *status)
	Gets the current sample rate. More...

void	HAL_SetAnalogAverageBits (HAL_AnalogInputHandle analogPortHandle, int32_t bits, int32_t *status)
	Sets the number of averaging bits. More...

int32_t	HAL_GetAnalogAverageBits (HAL_AnalogInputHandle analogPortHandle, int32_t *status)
	Gets the number of averaging bits. More...

void	HAL_SetAnalogOversampleBits (HAL_AnalogInputHandle analogPortHandle, int32_t bits, int32_t *status)
	Sets the number of oversample bits. More...

int32_t	HAL_GetAnalogOversampleBits (HAL_AnalogInputHandle analogPortHandle, int32_t *status)
	Gets the number of oversample bits. More...

int32_t	HAL_GetAnalogValue (HAL_AnalogInputHandle analogPortHandle, int32_t *status)
	Gets a sample straight from the channel on this module. More...

int32_t	HAL_GetAnalogAverageValue (HAL_AnalogInputHandle analogPortHandle, int32_t *status)
	Gets a sample from the output of the oversample and average engine for the channel. More...

int32_t	HAL_GetAnalogVoltsToValue (HAL_AnalogInputHandle analogPortHandle, double voltage, int32_t *status)
	Converts a voltage to a raw value for a specified channel. More...

double	HAL_GetAnalogVoltage (HAL_AnalogInputHandle analogPortHandle, int32_t *status)
	Gets a scaled sample straight from the channel on this module. More...

double	HAL_GetAnalogAverageVoltage (HAL_AnalogInputHandle analogPortHandle, int32_t *status)
	Gets a scaled sample from the output of the oversample and average engine for the channel. More...

int32_t	HAL_GetAnalogLSBWeight (HAL_AnalogInputHandle analogPortHandle, int32_t *status)
	Gets the factory scaling least significant bit weight constant. More...

int32_t	HAL_GetAnalogOffset (HAL_AnalogInputHandle analogPortHandle, int32_t *status)
	Gets the factory scaling offset constant. More...

double	HAL_GetAnalogValueToVolts (HAL_AnalogInputHandle analogPortHandle, int32_t rawValue, int32_t *status)
	Get the analog voltage from a raw value. More...

Detailed Description

Function Documentation

◆ HAL_CheckAnalogInputChannel()

HAL_Bool HAL_CheckAnalogInputChannel ( int32_t channel )

Checks that the analog output channel number is valid.

Verifies that the analog channel number is one of the legal channel numbers. Channel numbers are 0-based.

Parameters

[in] channel The analog output channel number.

Returns: Analog channel is valid

◆ HAL_CheckAnalogModule()

HAL_Bool HAL_CheckAnalogModule ( int32_t module )

Checks that the analog module number is valid.

Parameters

[in] module The analog module number.

Returns: Analog module is valid and present

◆ HAL_FreeAnalogInputPort()

void HAL_FreeAnalogInputPort ( HAL_AnalogInputHandle analogPortHandle )

Frees an analog input port.

Parameters

[in,out] analogPortHandle Handle to the analog port.

◆ HAL_GetAnalogAverageBits()

int32_t HAL_GetAnalogAverageBits	(	HAL_AnalogInputHandle	analogPortHandle,
		int32_t *	status
	)

Gets the number of averaging bits.

This gets the number of averaging bits from the FPGA. The actual number of averaged samples is 2**bits. The averaging is done automatically in the FPGA.

Parameters

[in]	analogPortHandle	Handle to the analog port to use.
[out]	status	the error code, or 0 for success

Returns: Bits to average.

◆ HAL_GetAnalogAverageValue()

int32_t HAL_GetAnalogAverageValue	(	HAL_AnalogInputHandle	analogPortHandle,
		int32_t *	status
	)

Gets a sample from the output of the oversample and average engine for the channel.

The sample is 12-bit + the value configured in SetOversampleBits(). The value configured in SetAverageBits() will cause this value to be averaged 2**bits number of samples. This is not a sliding window. The sample will not change until 2**(OversampleBits + AverageBits) samples have been acquired from the module on this channel. Use GetAverageVoltage() to get the analog value in calibrated units.

Parameters

[in]	analogPortHandle	Handle to the analog port to use.
[out]	status	the error code, or 0 for success

Returns: A sample from the oversample and average engine for the channel.

◆ HAL_GetAnalogAverageVoltage()

double HAL_GetAnalogAverageVoltage	(	HAL_AnalogInputHandle	analogPortHandle,
		int32_t *	status
	)

Gets a scaled sample from the output of the oversample and average engine for the channel.

The value is scaled to units of Volts using the calibrated scaling data from GetLSBWeight() and GetOffset(). Using oversampling will cause this value to be higher resolution, but it will update more slowly. Using averaging will cause this value to be more stable, but it will update more slowly.

Parameters

[in]	analogPortHandle	Handle to the analog port to use.
[out]	status	the error code, or 0 for success

Returns: A scaled sample from the output of the oversample and average engine for the channel.

◆ HAL_GetAnalogLSBWeight()

int32_t HAL_GetAnalogLSBWeight	(	HAL_AnalogInputHandle	analogPortHandle,
		int32_t *	status
	)

Gets the factory scaling least significant bit weight constant.

The least significant bit weight constant for the channel that was calibrated in manufacturing and stored in an eeprom in the module.

Volts = ((LSB_Weight * 1e-9) * raw) - (Offset * 1e-9)

Parameters

[in]	analogPortHandle	Handle to the analog port to use.
[out]	status	the error code, or 0 for success

Returns: Least significant bit weight.

◆ HAL_GetAnalogOffset()

int32_t HAL_GetAnalogOffset	(	HAL_AnalogInputHandle	analogPortHandle,
		int32_t *	status
	)

Gets the factory scaling offset constant.

The offset constant for the channel that was calibrated in manufacturing and stored in an eeprom in the module.

Volts = ((LSB_Weight * 1e-9) * raw) - (Offset * 1e-9)

Parameters

[in]	analogPortHandle	Handle to the analog port to use.
[out]	status	Error status variable. 0 on success.

Returns: Offset constant.

◆ HAL_GetAnalogOversampleBits()

int32_t HAL_GetAnalogOversampleBits	(	HAL_AnalogInputHandle	analogPortHandle,
		int32_t *	status
	)

Gets the number of oversample bits.

This gets the number of oversample bits from the FPGA. The actual number of oversampled values is 2**bits. The oversampling is done automatically in the FPGA.

Parameters

[in]	analogPortHandle	Handle to the analog port to use.
[out]	status	the error code, or 0 for success

Returns: Bits to oversample.

◆ HAL_GetAnalogSampleRate()

double HAL_GetAnalogSampleRate ( int32_t * status )

Gets the current sample rate.

This assumes one entry in the scan list. This is a global setting for the Athena and effects all channels.

Parameters

[out] status the error code, or 0 for success

Returns: Sample rate.

◆ HAL_GetAnalogValue()

int32_t HAL_GetAnalogValue	(	HAL_AnalogInputHandle	analogPortHandle,
		int32_t *	status
	)

Gets a sample straight from the channel on this module.

The sample is a 12-bit value representing the 0V to 5V range of the A/D converter in the module. The units are in A/D converter codes. Use GetVoltage() to get the analog value in calibrated units.

Parameters

[in]	analogPortHandle	Handle to the analog port to use.
[out]	status	the error code, or 0 for success

Returns: A sample straight from the channel on this module.

◆ HAL_GetAnalogValueToVolts()

double HAL_GetAnalogValueToVolts	(	HAL_AnalogInputHandle	analogPortHandle,
		int32_t	rawValue,
		int32_t *	status
	)

Get the analog voltage from a raw value.

Parameters

[in]	analogPortHandle	Handle to the analog port the values were read from.
[in]	rawValue	The raw analog value
[out]	status	Error status variable. 0 on success.

Returns: The voltage relating to the value

◆ HAL_GetAnalogVoltage()

double HAL_GetAnalogVoltage	(	HAL_AnalogInputHandle	analogPortHandle,
		int32_t *	status
	)

Gets a scaled sample straight from the channel on this module.

The value is scaled to units of Volts using the calibrated scaling data from GetLSBWeight() and GetOffset().

Parameters

[in]	analogPortHandle	Handle to the analog port to use.
[out]	status	the error code, or 0 for success

Returns: A scaled sample straight from the channel on this module.

◆ HAL_GetAnalogVoltsToValue()

int32_t HAL_GetAnalogVoltsToValue	(	HAL_AnalogInputHandle	analogPortHandle,
		double	voltage,
		int32_t *	status
	)

Converts a voltage to a raw value for a specified channel.

This process depends on the calibration of each channel, so the channel must be specified.

Todo:: This assumes raw values. Oversampling not supported as is.

Parameters

[in]	analogPortHandle	Handle to the analog port to use.
[in]	voltage	The voltage to convert.
[out]	status	the error code, or 0 for success

Returns: The raw value for the channel.

◆ HAL_InitializeAnalogInputPort()

HAL_AnalogInputHandle HAL_InitializeAnalogInputPort	(	HAL_PortHandle	portHandle,
		const char *	allocationLocation,
		int32_t *	status
	)

Initializes the analog input port using the given port object.

Parameters

[in]	portHandle	Handle to the port to initialize.
[in]	allocationLocation	the location where the allocation is occurring (can be null)
[out]	status	the error code, or 0 for success

Returns: the created analog input handle

◆ HAL_SetAnalogAverageBits()

void HAL_SetAnalogAverageBits	(	HAL_AnalogInputHandle	analogPortHandle,
		int32_t	bits,
		int32_t *	status
	)

Sets the number of averaging bits.

This sets the number of averaging bits. The actual number of averaged samples is 2**bits. Use averaging to improve the stability of your measurement at the expense of sampling rate. The averaging is done automatically in the FPGA.

Parameters

[in]	analogPortHandle	Handle to the analog port to configure.
[in]	bits	Number of bits to average.
[out]	status	the error code, or 0 for success

◆ HAL_SetAnalogInputSimDevice()

void HAL_SetAnalogInputSimDevice	(	HAL_AnalogInputHandle	handle,
		HAL_SimDeviceHandle	device
	)

Indicates the analog input is used by a simulated device.

Parameters

handle	the analog input handle
device	simulated device handle

◆ HAL_SetAnalogOversampleBits()

void HAL_SetAnalogOversampleBits	(	HAL_AnalogInputHandle	analogPortHandle,
		int32_t	bits,
		int32_t *	status
	)

Sets the number of oversample bits.

This sets the number of oversample bits. The actual number of oversampled values is 2**bits. Use oversampling to improve the resolution of your measurements at the expense of sampling rate. The oversampling is done automatically in the FPGA.

Parameters

[in]	analogPortHandle	Handle to the analog port to use.
[in]	bits	Number of bits to oversample.
[out]	status	the error code, or 0 for success

◆ HAL_SetAnalogSampleRate()

void HAL_SetAnalogSampleRate	(	double	samplesPerSecond,
		int32_t *	status
	)

Sets the sample rate.

This is a global setting for the Athena and effects all channels.

Parameters

[in]	samplesPerSecond	The number of samples per channel per second.
[out]	status	the error code, or 0 for success

Functions

Detailed Description

Function Documentation

◆ HAL_CheckAnalogInputChannel()

◆ HAL_CheckAnalogModule()

◆ HAL_FreeAnalogInputPort()

◆ HAL_GetAnalogAverageBits()

◆ HAL_GetAnalogAverageValue()

◆ HAL_GetAnalogAverageVoltage()

◆ HAL_GetAnalogLSBWeight()

◆ HAL_GetAnalogOffset()

◆ HAL_GetAnalogOversampleBits()

◆ HAL_GetAnalogSampleRate()

◆ HAL_GetAnalogValue()

◆ HAL_GetAnalogValueToVolts()

◆ HAL_GetAnalogVoltage()

◆ HAL_GetAnalogVoltsToValue()

◆ HAL_InitializeAnalogInputPort()

◆ HAL_SetAnalogAverageBits()

◆ HAL_SetAnalogInputSimDevice()

◆ HAL_SetAnalogOversampleBits()

◆ HAL_SetAnalogSampleRate()