Data Structures
struct	DL_OPA_Config
	Configuration struct for DL_OPA_init. More...

Enumerations
enum	DL_OPA_CHOPPING_MODE { DL_OPA_CHOPPING_MODE_DISABLE = OA_CFG_CHOP_OFF, DL_OPA_CHOPPING_MODE_STANDARD = OA_CFG_CHOP_ON, DL_OPA_CHOPPING_MODE_ADC_AVERAGING = OA_CFG_CHOP_AVGON }

enum	DL_OPA_OUTPUT_PIN_STATE { DL_OPA_OUTPUT_PIN_ENABLED = OA_CFG_OUTPIN_ENABLED, DL_OPA_OUTPUT_PIN_DISABLED = OA_CFG_OUTPIN_DISABLED }

enum	DL_OPA_PSEL { DL_OPA_PSEL_OPEN = OA_CFG_PSEL_NC, DL_OPA_PSEL_IN0_POS = OA_CFG_PSEL_EXTPIN0, DL_OPA_PSEL_IN1_POS = OA_CFG_PSEL_EXTPIN1, DL_OPA_PSEL_DAC_OUT = OA_CFG_PSEL_DAC12OUT, DL_OPA_PSEL_DAC8_OUT = OA_CFG_PSEL_DAC8OUT, DL_OPA_PSEL_VREF = OA_CFG_PSEL_VREF, DL_OPA_PSEL_RTOP = OA_CFG_PSEL_OANM1RTOP, DL_OPA_PSEL_GPAMP_OUT = OA_CFG_PSEL_GPAMP_OUT_INT, DL_OPA_PSEL_GND = OA_CFG_PSEL_VSS }

enum	DL_OPA_NSEL { DL_OPA_NSEL_OPEN = OA_CFG_NSEL_NC, DL_OPA_NSEL_IN0_NEG = OA_CFG_NSEL_EXTPIN0, DL_OPA_NSEL_IN1_NEG = OA_CFG_NSEL_EXTPIN1, DL_OPA_NSEL_RBOT = OA_CFG_NSEL_OANP1RBOT, DL_OPA_NSEL_RTAP = OA_CFG_NSEL_OANRTAP, DL_OPA_NSEL_RTOP = OA_CFG_NSEL_OANRTOP, DL_OPA_NSEL_SPARE = OA_CFG_NSEL_SPARE }

enum	DL_OPA_MSEL { DL_OPA_MSEL_OPEN = OA_CFG_MSEL_NC, DL_OPA_MSEL_IN1_NEG = OA_CFG_MSEL_EXTNPIN1, DL_OPA_MSEL_GND = OA_CFG_MSEL_VSS, DL_OPA_MSEL_DAC_OUT = OA_CFG_MSEL_DAC12OUT, DL_OPA_MSEL_RTOP = OA_CFG_MSEL_OANM1RTOP }

enum	DL_OPA_GBW { DL_OPA_GBW_HIGH = OA_CFGBASE_GBW_HIGHGAIN, DL_OPA_GBW_LOW = OA_CFGBASE_GBW_LOWGAIN }

enum	DL_OPA_GAIN { DL_OPA_GAIN_N0_P1 = (((uint32_t) 0x0) << OA_CFG_GAIN_OFS), DL_OPA_GAIN_N1_P2 = (((uint32_t) 0x1) << OA_CFG_GAIN_OFS), DL_OPA_GAIN_N3_P4 = (((uint32_t) 0x2) << OA_CFG_GAIN_OFS), DL_OPA_GAIN_N7_P8 = (((uint32_t) 0x3) << OA_CFG_GAIN_OFS), DL_OPA_GAIN_N15_P16 = (((uint32_t) 0x4) << OA_CFG_GAIN_OFS), DL_OPA_GAIN_N31_P32 = (((uint32_t) 0x5) << OA_CFG_GAIN_OFS) }

Functions
__STATIC_INLINE void	DL_OPA_enablePower (OA_Regs *opa)
	Enables the Peripheral Write Enable (PWREN) register for the OPA. More...

__STATIC_INLINE void	DL_OPA_disablePower (OA_Regs *opa)
	Disables the Peripheral Write Enable (PWREN) register for the OPA. More...

__STATIC_INLINE bool	DL_OPA_isPowerEnabled (const OA_Regs *opa)
	Returns if the Peripheral Write Enable (PWREN) register for the OPA is enabled. More...

__STATIC_INLINE void	DL_OPA_reset (OA_Regs *opa)
	Resets OPA peripheral. More...

__STATIC_INLINE bool	DL_OPA_isReset (const OA_Regs *opa)
	Returns if OPA peripheral was reset. More...

__STATIC_INLINE void	DL_OPA_enable (OA_Regs *opa)
	Enable the OPA peripheral. More...

__STATIC_INLINE bool	DL_OPA_isEnabled (const OA_Regs *opa)
	Checks if the OPA peripheral is enabled. More...

__STATIC_INLINE void	DL_OPA_disable (OA_Regs *opa)
	Disable the OPA peripheral. More...

__STATIC_INLINE void	DL_OPA_init (OA_Regs opa, const DL_OPA_Config config)
	Initialize the OPA peripheral. More...

__STATIC_INLINE void	DL_OPA_setGainBandwidth (OA_Regs *opa, DL_OPA_GBW bandwidth)
	Set the gain bandwidth (GBW) More...

__STATIC_INLINE DL_OPA_GBW	DL_OPA_getGainBandwidth (const OA_Regs *opa)
	Get the gain bandwidth (GBW) More...

__STATIC_INLINE void	DL_OPA_enableRailToRailInput (OA_Regs *opa)
	Enable the rail-to-rail input (RRI) More...

__STATIC_INLINE bool	DL_OPA_isRailToRailInputEnabled (OA_Regs *opa)
	Checks if the the rail-to-rail input (RRI) is enabled. More...

__STATIC_INLINE void	DL_OPA_disableRailToRailInput (OA_Regs *opa)
	Disable the rail-to-rail input (RRI) More...

__STATIC_INLINE void	DL_OPA_setChoppingMode (OA_Regs *opa, DL_OPA_CHOPPING_MODE mode)
	Set and enable the chopping mode. More...

__STATIC_INLINE DL_OPA_CHOPPING_MODE	DL_OPA_getChoppingMode (const OA_Regs *opa)
	Get the chopping mode. More...

__STATIC_INLINE void	DL_OPA_setOutputPinState (OA_Regs *opa, DL_OPA_OUTPUT_PIN_STATE state)
	Set the state of the output pin. More...

__STATIC_INLINE DL_OPA_OUTPUT_PIN_STATE	DL_OPA_getOutputPinState (const OA_Regs *opa)
	Get the state of the output pin. More...

__STATIC_INLINE void	DL_OPA_disableOutputPin (OA_Regs *opa)
	Disable the OPA output signal to be accessed by a device pin. More...

__STATIC_INLINE void	DL_OPA_setNonInvertingInputChannel (OA_Regs *opa, DL_OPA_PSEL inputChannel)
	Set the non-inverting input channel. More...

__STATIC_INLINE DL_OPA_PSEL	DL_OPA_getNonInvertingInputChannel (const OA_Regs *opa)
	Get the non-inverting input channel. More...

__STATIC_INLINE void	DL_OPA_setInvertingInputChannel (OA_Regs *opa, DL_OPA_NSEL inputChannel)
	Set the inverting input channel. More...

__STATIC_INLINE DL_OPA_NSEL	DL_OPA_getInvertingInputChannel (const OA_Regs *opa)
	Get the inverting input channel. More...

__STATIC_INLINE void	DL_OPA_setMMUXInputChannel (OA_Regs *opa, DL_OPA_MSEL inputChannel)
	Set the M-MUX input channel. More...

__STATIC_INLINE DL_OPA_MSEL	DL_OPA_getMMUXInputChannel (const OA_Regs *opa)
	Get the M-MUX input channel. More...

__STATIC_INLINE void	DL_OPA_setGain (OA_Regs *opa, DL_OPA_GAIN gain)
	Set the gain for the programmable gain stage. More...

__STATIC_INLINE DL_OPA_GAIN	DL_OPA_getGain (const OA_Regs *opa)
	Get the gain from the programmable gain stage. More...

DL_OPA_GAIN	DL_OPA_increaseGain (OA_Regs *opa)
	Increment gain to the next DL_OPA_GAIN enum value. More...

DL_OPA_GAIN	DL_OPA_decreaseGain (OA_Regs *opa)
	Decrement gain to the next DL_OPA_GAIN enum value. More...

__STATIC_INLINE bool	DL_OPA_isReady (const OA_Regs *opa)
	Checks if the OPA is ready. More...

Detailed Description

Overview

The OP-Amp Driver Library allows full configuration of the MSPM0 OPA module. The OPA is a zero-drift chopper stabilized operational amplifier with a programmable gain stage.

Enumeration Type Documentation

§ DL_OPA_CHOPPING_MODE

enum DL_OPA_CHOPPING_MODE

Enumerator
DL_OPA_CHOPPING_MODE_DISABLE	Disable chopping mode
DL_OPA_CHOPPING_MODE_STANDARD	Enable standard chopping mode
DL_OPA_CHOPPING_MODE_ADC_AVERAGING	Enable ADC assisted chopping mode. Requires OPA output to be connected to an ADC input with hardware averaging.

§ DL_OPA_OUTPUT_PIN_STATE

enum DL_OPA_OUTPUT_PIN_STATE

Enumerator
DL_OPA_OUTPUT_PIN_ENABLED	Output pin is enabled
DL_OPA_OUTPUT_PIN_DISABLED	Outpin pin is disabled

§ DL_OPA_PSEL

enum DL_OPA_PSEL

Enumerator
DL_OPA_PSEL_OPEN	Non-inverting input channel is Open
DL_OPA_PSEL_IN0_POS	Non-inverting input is OPAx_IN0+
DL_OPA_PSEL_IN1_POS	Non-inverting input is OPAx_IN1+
DL_OPA_PSEL_DAC_OUT	Non-inverting input is DAC_OUT
DL_OPA_PSEL_DAC8_OUT	Non-inverting input is DAC8.x_OUT
DL_OPA_PSEL_VREF	Non-inverting input is VREF
DL_OPA_PSEL_RTOP	Non-inverting input is OPA[x-1]_RTOP
DL_OPA_PSEL_GPAMP_OUT	Non-inverting input is GPAMP OUT
DL_OPA_PSEL_GND	Non-inverting input is GND

§ DL_OPA_NSEL

enum DL_OPA_NSEL

Enumerator
DL_OPA_NSEL_OPEN	Inverting input channel is Open
DL_OPA_NSEL_IN0_NEG	Inverting input channel is OPAx_IN0-
DL_OPA_NSEL_IN1_NEG	Inverting input channel is OPAx_IN1-
DL_OPA_NSEL_RBOT	Inverting input channel is OPA[x-1]_RBOT
DL_OPA_NSEL_RTAP	Inverting input channel is RTAP
DL_OPA_NSEL_RTOP	Inverting input channel is RTOP
DL_OPA_NSEL_SPARE	Spare input for inverting channel

§ DL_OPA_MSEL

enum DL_OPA_MSEL

Enumerator
DL_OPA_MSEL_OPEN	M-MUX input channel is Open
DL_OPA_MSEL_IN1_NEG	M-MUX input channel is OPAx_IN1-
DL_OPA_MSEL_GND	M-MUX input channel is GND
DL_OPA_MSEL_DAC_OUT	M-MUX input channel is DAC_OUT
DL_OPA_MSEL_RTOP	M-MUX input channel is OPA[x-1]_RTOP

§ DL_OPA_GBW

enum DL_OPA_GBW

Enumerator
DL_OPA_GBW_HIGH	High gain bandwidth (GBW). See device specific datasheet for values.
DL_OPA_GBW_LOW	Low gain bandwidth (GBW). See device specific datasheet for values.

§ DL_OPA_GAIN

enum DL_OPA_GAIN

Enumerator
DL_OPA_GAIN_N0_P1	Gain value is Not Valid in Non-inverting and inverting PGA modes
DL_OPA_GAIN_N1_P2	Gain value is -1x in Inverting PGA mode, and 2x in Non-inverting PGA mode
DL_OPA_GAIN_N3_P4	Gain value is -3x in Inverting PGA mode, and 4x in Non-inverting PGA mode
DL_OPA_GAIN_N7_P8	Gain value is -7x in Inverting PGA mode, and 8x in Non-inverting PGA mode
DL_OPA_GAIN_N15_P16	Gain value is -15x in Inverting PGA mode, and 16x in Non-inverting PGA mode
DL_OPA_GAIN_N31_P32	Gain value is -31x in Inverting PGA mode, and 32x in Non-inverting PGA mode

Function Documentation

§ DL_OPA_enablePower()

__STATIC_INLINE void DL_OPA_enablePower ( OA_Regs * opa )

Enables the Peripheral Write Enable (PWREN) register for the OPA.

Before any peripheral registers can be configured by software, the peripheral itself must be enabled by writing the ENABLE bit together with the appropriate KEY value to the peripheral's PWREN register.

Note: For power savings, please refer to DL_OPA_enable

Parameters

[in] opa Pointer to the register overlay for the peripheral

§ DL_OPA_disablePower()

__STATIC_INLINE void DL_OPA_disablePower ( OA_Regs * opa )

Disables the Peripheral Write Enable (PWREN) register for the OPA.

When the PWREN.ENABLE bit is cleared, the peripheral's registers are not accessible for read/write operations.

Note: This API does not provide large power savings. For power savings, please refer to DL_OPA_enable

Parameters

[in] opa Pointer to the register overlay for the peripheral

§ DL_OPA_isPowerEnabled()

__STATIC_INLINE bool DL_OPA_isPowerEnabled ( const OA_Regs * opa )

Returns if the Peripheral Write Enable (PWREN) register for the OPA is enabled.

Before any peripheral registers can be configured by software, the peripheral itself must be enabled by writing the ENABLE bit together with the appropriate KEY value to the peripheral's PWREN register.

When the PWREN.ENABLE bit is cleared, the peripheral's registers are not accessible for read/write operations.

Parameters

[in] opa Pointer to the register overlay for the peripheral

Returns: true if peripheral register access is enabled; false if peripheral register access is disabled

§ DL_OPA_reset()

__STATIC_INLINE void DL_OPA_reset ( OA_Regs * opa )

Resets OPA peripheral.

Parameters

[in] opa Pointer to the register overlay for the peripheral

§ DL_OPA_isReset()

__STATIC_INLINE bool DL_OPA_isReset ( const OA_Regs * opa )

Returns if OPA peripheral was reset.

Parameters

[in] opa Pointer to the register overlay for the peripheral

Returns: true if peripheral was reset; false if peripheral wasn't reset

§ DL_OPA_enable()

__STATIC_INLINE void DL_OPA_enable ( OA_Regs * opa )

Enable the OPA peripheral.

Parameters

[in] opa Pointer to the register overlay for the peripheral

§ DL_OPA_isEnabled()

__STATIC_INLINE bool DL_OPA_isEnabled ( const OA_Regs * opa )

Checks if the OPA peripheral is enabled.

Parameters

[in] opa Pointer to the register overlay for the peripheral

Returns: Returns the enabled status of the OPA

Return values

true	The OPA peripheral is enabled
false	The OPA peripheral is disabled

§ DL_OPA_disable()

__STATIC_INLINE void DL_OPA_disable ( OA_Regs * opa )

Disable the OPA peripheral.

Parameters

[in] opa Pointer to the register overlay for the peripheral

§ DL_OPA_init()

__STATIC_INLINE void DL_OPA_init	(	OA_Regs *	opa,
		const DL_OPA_Config *	config
	)

Initialize the OPA peripheral.

Initializes all the common configurable options for the OPA peripheral. Any other custom configuration can be done after calling this API. The OPA is not enabled in this API.

Parameters

[in]	opa	Pointer to the register overlay for the peripheral
[in]	config	Configuration for OPA peripheral

References DL_OPA_Config::choppingMode, DL_Common_updateReg(), DL_OPA_Config::gain, DL_OPA_Config::mselChannel, DL_OPA_Config::nselChannel, DL_OPA_Config::outputPinState, and DL_OPA_Config::pselChannel.

§ DL_OPA_setGainBandwidth()

__STATIC_INLINE void DL_OPA_setGainBandwidth	(	OA_Regs *	opa,
		DL_OPA_GBW	bandwidth
	)

Set the gain bandwidth (GBW)

Parameters

[in]	opa	Pointer to the register overlay for the peripheral
[in]	bandwidth	The gain bandwidth to set. One of DL_OPA_GBW

Precondition: The OPA must be ready (STAT.RDY == 1) before setting this configuration.

References DL_Common_updateReg().

§ DL_OPA_getGainBandwidth()

__STATIC_INLINE DL_OPA_GBW DL_OPA_getGainBandwidth ( const OA_Regs * opa )

Get the gain bandwidth (GBW)

Parameters

[in] opa Pointer to the register overlay for the peripheral

Returns: The current gain bandwidth

Return values

One	of DL_OPA_GBW

§ DL_OPA_enableRailToRailInput()

__STATIC_INLINE void DL_OPA_enableRailToRailInput ( OA_Regs * opa )

Enable the rail-to-rail input (RRI)

Parameters

[in] opa Pointer to the register overlay for the peripheral

Precondition: The OPA must be ready (STAT.RDY == 1) before setting this configuration.

§ DL_OPA_isRailToRailInputEnabled()

__STATIC_INLINE bool DL_OPA_isRailToRailInputEnabled ( OA_Regs * opa )

Checks if the the rail-to-rail input (RRI) is enabled.

Parameters

[in] opa Pointer to the register overlay for the peripheral

Returns: Returns the rail-to-rail input status of the OPA

Return values

true	The rail-to-rail input is enabled
false	The rail-to-rail input is disabled

§ DL_OPA_disableRailToRailInput()

__STATIC_INLINE void DL_OPA_disableRailToRailInput ( OA_Regs * opa )

Disable the rail-to-rail input (RRI)

Parameters

[in] opa Pointer to the register overlay for the peripheral

§ DL_OPA_setChoppingMode()

__STATIC_INLINE void DL_OPA_setChoppingMode	(	OA_Regs *	opa,
		DL_OPA_CHOPPING_MODE	mode
	)

Set and enable the chopping mode.

Parameters

[in]	opa	Pointer to the register overlay for the peripheral
[in]	mode	The chopping mode to set. One of DL_OPA_CHOPPING_MODE

References DL_Common_updateReg().

§ DL_OPA_getChoppingMode()

__STATIC_INLINE DL_OPA_CHOPPING_MODE DL_OPA_getChoppingMode ( const OA_Regs * opa )

Get the chopping mode.

Parameters

[in] opa Pointer to the register overlay for the peripheral

Returns: The current chopping mode

Return values

One	of DL_OPA_CHOPPING_MODE

§ DL_OPA_setOutputPinState()

__STATIC_INLINE void DL_OPA_setOutputPinState	(	OA_Regs *	opa,
		DL_OPA_OUTPUT_PIN_STATE	state
	)

Set the state of the output pin.

When the output pin is enabled, the OPA output goes to the device pin while still maintaining connection to the programmable gain stage and other analog peripherals. When disabled, the OPA output is a purely internal signal and is internally connected to the programmable gain stage and capable of being routed to other on-board analog peripherals.

Parameters

[in]	opa	Pointer to the register overlay for the peripheral
[in]	state	The state to set the output pin to One of DL_OPA_OUTPUT_PIN_STATE

References DL_Common_updateReg().

§ DL_OPA_getOutputPinState()

__STATIC_INLINE DL_OPA_OUTPUT_PIN_STATE DL_OPA_getOutputPinState ( const OA_Regs * opa )

Get the state of the output pin.

When the output pin is enabled, the OPA output goes to the device pin while still maintaining connection to the programmable gain stage and other analog peripherals. When disabled, the OPA output is a purely internal signal and is internally connected to the programmable gain stage and capable of being routed to other on-board analog peripherals.

Parameters

[in] opa Pointer to the register overlay for the peripheral

Returns: The state of the output pin

Return values

One	of DL_OPA_OUTPUT_PIN_STATE

§ DL_OPA_disableOutputPin()

__STATIC_INLINE void DL_OPA_disableOutputPin ( OA_Regs * opa )

Disable the OPA output signal to be accessed by a device pin.

When disabled, the OPA output is a purely internal signal and is internally connected to the programmable gain stage and capable of being routed to other on-board analog peripherals.

Parameters

[in] opa Pointer to the register overlay for the peripheral

§ DL_OPA_setNonInvertingInputChannel()

__STATIC_INLINE void DL_OPA_setNonInvertingInputChannel	(	OA_Regs *	opa,
		DL_OPA_PSEL	inputChannel
	)

Set the non-inverting input channel.

This API sets the PSEL control bit to select the non-inverting input channel of the amplifier.

Parameters

[in]	opa	Pointer to the register overlay for the peripheral
[in]	inputChannel	The non-inverting input channel to set. One of DL_OPA_PSEL.

References DL_Common_updateReg().

§ DL_OPA_getNonInvertingInputChannel()

__STATIC_INLINE DL_OPA_PSEL DL_OPA_getNonInvertingInputChannel ( const OA_Regs * opa )

Get the non-inverting input channel.

Parameters

[in] opa Pointer to the register overlay for the peripheral

Returns: The current non-inverting input channel

Return values

One	of DL_OPA_PSEL

§ DL_OPA_setInvertingInputChannel()

__STATIC_INLINE void DL_OPA_setInvertingInputChannel	(	OA_Regs *	opa,
		DL_OPA_NSEL	inputChannel
	)

Set the inverting input channel.

This API sets the NSEL control bit to select the inverting input channel of the amplifier.

Parameters

[in]	opa	Pointer to the register overlay for the peripheral
[in]	inputChannel	The inverting input channel to set. One of DL_OPA_NSEL.

References DL_Common_updateReg().

§ DL_OPA_getInvertingInputChannel()

__STATIC_INLINE DL_OPA_NSEL DL_OPA_getInvertingInputChannel ( const OA_Regs * opa )

Get the inverting input channel.

Parameters

[in] opa Pointer to the register overlay for the peripheral

Returns: The current inverting input channel

Return values

One	of DL_OPA_NSEL

§ DL_OPA_setMMUXInputChannel()

__STATIC_INLINE void DL_OPA_setMMUXInputChannel	(	OA_Regs *	opa,
		DL_OPA_MSEL	inputChannel
	)

Set the M-MUX input channel.

This API sets the MSEL control bit to select the input channel for M-MUX, which is connected to the programmable gain stage resistor ladder.

Parameters

[in]	opa	Pointer to the register overlay for the peripheral
[in]	inputChannel	The M-MUX input channel to set. One of DL_OPA_MSEL.

References DL_Common_updateReg().

§ DL_OPA_getMMUXInputChannel()

__STATIC_INLINE DL_OPA_MSEL DL_OPA_getMMUXInputChannel ( const OA_Regs * opa )

Get the M-MUX input channel.

Parameters

[in] opa Pointer to the register overlay for the peripheral

Returns: The current M-MUX input channel

Return values

One	of DL_OPA_MSEL

§ DL_OPA_setGain()

__STATIC_INLINE void DL_OPA_setGain	(	OA_Regs *	opa,
		DL_OPA_GAIN	gain
	)

Set the gain for the programmable gain stage.

The OPA integrates a programmable gain stage in the feedback loop to configure the OPA as a PGA(programmable gain amplifier). The gain stage is a feedback resistance ladder and it supports up to 32x amplification.

Refer to the TRM for gain enumeration information.

Parameters

[in]	opa	Pointer to the register overlay for the peripheral
[in]	gain	The gain to set. One of DL_OPA_GAIN.

References DL_Common_updateReg().

§ DL_OPA_getGain()

__STATIC_INLINE DL_OPA_GAIN DL_OPA_getGain ( const OA_Regs * opa )

Get the gain from the programmable gain stage.

Refer to the TRM for gain enumeration information.

Parameters

[in] opa Pointer to the register overlay for the peripheral

Returns: The gain

Return values

The	gain. One of DL_OPA_GAIN

References DL_OPA_decreaseGain(), and DL_OPA_increaseGain().

§ DL_OPA_increaseGain()

DL_OPA_GAIN DL_OPA_increaseGain ( OA_Regs * opa )

Increment gain to the next DL_OPA_GAIN enum value.

The OPA allows dynamic gain changes. If the gain is already at the maximum setting DL_OPA_GAIN_N31_P32 (CFG.GAIN = 0x5), this function does nothing.

Refer to the TRM for more information about changing gain dynamically.

Parameters

[in] opa Pointer to the register overlay for the peripheral

Returns: The gain at the end of the operation.

Return values

The	applied gain. One of DL_OPA_GAIN

Referenced by DL_OPA_getGain().

§ DL_OPA_decreaseGain()

DL_OPA_GAIN DL_OPA_decreaseGain ( OA_Regs * opa )

Decrement gain to the next DL_OPA_GAIN enum value.

The OPA allows dynamic gain changes. If the gain is at the minimum setting DL_OPA_GAIN_N1_P2 (CFG.GAIN = 0x1), this function does nothing.

Refer to the TRM for more information about changing gain dynamically.

Parameters

[in] opa Pointer to the register overlay for the peripheral

Returns: The gain at the end of the operation.

Return values

The	applied gain. One of DL_OPA_GAIN

Referenced by DL_OPA_getGain().

§ DL_OPA_isReady()

__STATIC_INLINE bool DL_OPA_isReady ( const OA_Regs * opa )

Checks if the OPA is ready.

Parameters

[in] opa Pointer to the register overlay for the peripheral

Returns: The status of the OPA ready bit

Return values

true	The OPA is ready
false	The OPA is not ready

Data Structures

Enumerations

Functions

Detailed Description

Overview

Enumeration Type Documentation

§ DL_OPA_CHOPPING_MODE

§ DL_OPA_OUTPUT_PIN_STATE

§ DL_OPA_PSEL

§ DL_OPA_NSEL

§ DL_OPA_MSEL

§ DL_OPA_GBW

§ DL_OPA_GAIN

Function Documentation

§ DL_OPA_enablePower()

§ DL_OPA_disablePower()

§ DL_OPA_isPowerEnabled()

§ DL_OPA_reset()

§ DL_OPA_isReset()

§ DL_OPA_enable()

§ DL_OPA_isEnabled()

§ DL_OPA_disable()

§ DL_OPA_init()

§ DL_OPA_setGainBandwidth()

§ DL_OPA_getGainBandwidth()

§ DL_OPA_enableRailToRailInput()

§ DL_OPA_isRailToRailInputEnabled()

§ DL_OPA_disableRailToRailInput()

§ DL_OPA_setChoppingMode()

§ DL_OPA_getChoppingMode()

§ DL_OPA_setOutputPinState()

§ DL_OPA_getOutputPinState()

§ DL_OPA_disableOutputPin()

§ DL_OPA_setNonInvertingInputChannel()

§ DL_OPA_getNonInvertingInputChannel()

§ DL_OPA_setInvertingInputChannel()

§ DL_OPA_getInvertingInputChannel()

§ DL_OPA_setMMUXInputChannel()

§ DL_OPA_getMMUXInputChannel()

§ DL_OPA_setGain()

§ DL_OPA_getGain()

§ DL_OPA_increaseGain()

§ DL_OPA_decreaseGain()

§ DL_OPA_isReady()