OpAmp

OpAmp library. More...

Classes
struct	OpampConfig
	OPAMP configuration structure. More...

Enumerations
enum	OpampInstance { OPAMP_1 = 0 , NUM_OPAMP_INSTANCES }
	OPAMP instance identifiers. More...
enum	OpampNonInvertingInput { OPAMP_NONINVERTING_IO0 = 0 , OPAMP_NONINVERTING_DAC }
	OPAMP non-inverting input selection (VINP) More...
enum	OpampInvertingInput { OPAMP_INVERTING_IO0 = 0 , OPAMP_INVERTING_IO1 , OPAMP_INVERTING_PGA , OPAMP_INVERTING_FOLLOWER }
	OPAMP inverting input selection (VINM) More...
enum	OpampProgrammableGain {   OPAMP_PROGRAMMABLE_GAIN_2 = 0 , OPAMP_PROGRAMMABLE_GAIN_4 , OPAMP_PROGRAMMABLE_GAIN_8 , OPAMP_PROGRAMMABLE_GAIN_16 ,   OPAMP_PROGRAMMABLE_GAIN_2_INVERTING , OPAMP_PROGRAMMABLE_GAIN_4_INVERTING , OPAMP_PROGRAMMABLE_GAIN_8_INVERTING , OPAMP_PROGRAMMABLE_GAIN_16_INVERTING }
	OPAMP PGA gain configuration (when using PGA mode) More...

Functions
StatusCode	opamp_init (void)
	Initialize the OPAMP peripheral. More...
StatusCode	opamp_configure (OpampInstance instance, OpampConfig *config)
	Configure and start an OPAMP instance. More...
StatusCode	opamp_start (OpampInstance instance)
	Start an OPAMP instance (enable output) More...
StatusCode	opamp_stop (OpampInstance instance)
	Stop an OPAMP instance (disable output) More...

Detailed Description

OpAmp library.

Enumeration Type Documentation

OpampInstance

enum OpampInstance

OPAMP instance identifiers.

Enumerator
OPAMP_1	OPAMP1 - PA1 (VINP), PA3 (VOUT), Internal VINM options

OpampInvertingInput

enum OpampInvertingInput

OPAMP inverting input selection (VINM)

Enumerator
OPAMP_INVERTING_IO0	PA0 for OPAMP1 - External feedback
OPAMP_INVERTING_IO1	PC5 for OPAMP1 - External feedback
OPAMP_INVERTING_PGA	PGA mode with internal resistors
OPAMP_INVERTING_FOLLOWER	Follower mode (VINM connected to VOUT internally)

OpampNonInvertingInput

enum OpampNonInvertingInput

OPAMP non-inverting input selection (VINP)

Enumerator
OPAMP_NONINVERTING_IO0	PA1 for OPAMP1
OPAMP_NONINVERTING_DAC	DAC channel output (internal)

OpampProgrammableGain

enum OpampProgrammableGain

OPAMP PGA gain configuration (when using PGA mode)

Enumerator
OPAMP_PROGRAMMABLE_GAIN_2	Gain = 2 (Non-inverting gain)
OPAMP_PROGRAMMABLE_GAIN_4	Gain = 4
OPAMP_PROGRAMMABLE_GAIN_8	Gain = 8
OPAMP_PROGRAMMABLE_GAIN_16	Gain = 16
OPAMP_PROGRAMMABLE_GAIN_2_INVERTING	Gain = -1 (Inverting with external R)
OPAMP_PROGRAMMABLE_GAIN_4_INVERTING	Gain = -3 (Inverting with external R)
OPAMP_PROGRAMMABLE_GAIN_8_INVERTING	Gain = -7 (Inverting with external R)
OPAMP_PROGRAMMABLE_GAIN_16_INVERTING	Gain = -15 (Inverting with external R)

Function Documentation

opamp_configure()

StatusCode opamp_configure	(	OpampInstance	instance,
		OpampConfig *	config
	)

Configure and start an OPAMP instance.

Parameters

instance	OPAMP instance to configure
config	Pointer to configuration structure

Returns

STATUS_CODE_OK if successful STATUS_CODE_INVALID_ARGS if parameters are invalid STATUS_CODE_UNINITIALIZED if OPAMP not initialized STATUS_CODE_INTERNAL_ERROR if HAL operation fails

opamp_init()

StatusCode opamp_init

(

void

)

Initialize the OPAMP peripheral.

Returns

STATUS_CODE_OK if successful STATUS_CODE_INVALID_ARGS if already initialized

opamp_start()

StatusCode opamp_start

(

OpampInstance

instance

)

Start an OPAMP instance (enable output)

Parameters

instance

OPAMP instance to start

Returns

STATUS_CODE_OK if successful STATUS_CODE_INVALID_ARGS if instance is invalid STATUS_CODE_UNINITIALIZED if OPAMP not initialized or not configured

opamp_stop()

StatusCode opamp_stop

(

OpampInstance

instance

)

Stop an OPAMP instance (disable output)

Parameters

instance

OPAMP instance to stop

Returns

STATUS_CODE_OK if successful STATUS_CODE_INVALID_ARGS if instance is invalid STATUS_CODE_UNINITIALIZED if OPAMP not initialized