ST STM32F31xx

Operational amplifier (OPAMP)
UM1581
294/584
DocID023800 Rev 1
Function Description
Enables or disables connecting the OPAMP's internal reference to
ADC.
Parameters
 NewState : new state of the Vrefint output. This parameter
can be: ENABLE or DISABLE.
Return values
 None.
Notes
 If the selected OPAMP is locked, Vref connection can't be
performed. To unlock the configuration, perform a system
reset.
16.2.4.8 OPAMP_TimerControlledMuxConfig
Function Name
void OPAMP_TimerControlledMuxConfig ( uint32_t
OPAMP_Selection, OPAMP_InitTypeDef * OPAMP_InitStruct)
Function Description
Configure the OPAMP peripheral (secondary inputs) for timer-
controlled mux mode according to the specified parameters in
OPAMP_InitStruct.
Parameters
 OPAMP_Selection : the selected OPAMP. This parameter
can be OPAMP_Selection_OPAMPx where x can be 1 to 4 to
select the OPAMP peripheral.
 OPAMP_InitStruct : pointer to an OPAMP_InitTypeDef
structure that contains the configuration information for the
specified OPAMP peripheral. OPAMP_InvertingInput
specifies the inverting input of
OPAMPOPAMP_NonInvertingInput specifies the non
inverting input of OPAMP
 OPAMP_InvertingInput :
 OPAMP_NonInvertingInput :
Return values
 None.
Notes
 If the selected OPAMP is locked, timer-controlled mux
configuration can't be performed. To unlock the configuration,
perform a system reset.
 PGA and Vout can't be selected as seconadry inverting input.
16.2.4.9 OPAMP_TimerControlledMuxCmd
Function Name
void OPAMP_TimerControlledMuxCmd ( uint32_t
OPAMP_Selection, FunctionalState NewState)