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UM1581

Comparators (COMP)

DocID023800 Rev 1

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performed. To unlock the configuration, perform a system

reset.

5.2.5.5 COMP_SwitchCmd

Function Name

void COMP_SwitchCmd ( uint32_t COMP_Selection,

FunctionalState NewState)

Function Description

Close or Open the SW1 switch.

Parameters

 NewState : New state of the analog switch. This parameter

can be ENABLE so the SW1 is closed; PA1 is connected to

PA4 or DISABLE so the SW1 switch is open; PA1 is

disconnected from PA4

Return values

 None.

Notes

 If the COMP1 is locked, Close/Open the SW1 switch can't be

performed. To unlock the configuration, perform a system

reset.

 This switch is solely intended to redirect signals onto high

impedance input, such as COMP1 non-inverting input (highly

resistive switch)

5.2.5.6 COMP_GetOutputLevel

Function Name

uint32_t COMP_GetOutputLevel ( uint32_t COMP_Selection)

Function Description

Return the output level (high or low) of the selected comparator.

Notes

 None.

ST STM32F31xx User Manual

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