Comparator Functions

This set of functions is specific to Comparator mode. More...

Functions
void	Cy_CTB_CompSetInterruptEdgeType (CTBM_Type *base, cy_en_ctb_opamp_sel_t compNum, cy_en_ctb_comp_edge_t edge)
	Configures the type of an edge that will trigger a comparator interrupt. More...
uint32_t	Cy_CTB_CompGetStatus (const CTBM_Type *base, cy_en_ctb_opamp_sel_t compNum)
	Returns the comparator output status. More...

Detailed Description

This set of functions is specific to Comparator mode.

Function Documentation

Cy_CTB_CompSetInterruptEdgeType()

void Cy_CTB_CompSetInterruptEdgeType	(	CTBM_Type *	base,
		cy_en_ctb_opamp_sel_t	compNum,
		cy_en_ctb_comp_edge_t	edge
	)

Configures the type of an edge that will trigger a comparator interrupt.

Parameters

base	The pointer to structure-describing registers.
compNum	CY_CTB_OPAMP_0, CY_CTB_OPAMP_1, or CY_CTB_OPAMP_BOTH
edge	The type of the edge that will trigger an interrupt. Select a value from cy_en_ctb_comp_edge_t.

Function Usage

    /* Scenario: Configure both edges (rising and falling) to trigger an interrupt in Comparator 0. */

    Cy_CTB_CompSetInterruptEdgeType(CTBM0, CY_CTB_OPAMP_0, CY_CTB_COMP_EDGE_BOTH);

Cy_CTB_CompGetStatus()

uint32_t Cy_CTB_CompGetStatus	(	const CTBM_Type *	base,
		cy_en_ctb_opamp_sel_t	compNum
	)

Returns the comparator output status.

When the positive input voltage is greater than the negative input voltage, the comparator status is high. Otherwise, the status is low.

Parameters

base	The pointer to structure-describing registers.
compNum	CY_CTB_OPAMP_0 or CY_CTB_OPAMP_1. CY_CTB_OPAMP_NONE and CY_CTB_OPAMP_BOTH are invalid options.

Returns

The comparator status. A value of 0 is returned if compNum is invalid.

• 0: The status is low
• 1: The status is high

Function Usage

    /* Scenario: Get the comparator output status on Comparator 0 to determine
     * the if the positive input voltage is greater than or less than the
     * negative input voltage. */
    uint32_t status;

    status = Cy_CTB_CompGetStatus(CTBM0, CY_CTB_OPAMP_0);

    if (1UL == status)
    {
        /* Positive input voltage is greater than the negative input voltage. */
    }
    else
    {
        /* Positive input voltage is less than the negative input voltage. */
    }