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##

# 3.19.6 Comparator (CMP)

The CMP peripheral consists of five comparators and four Op Amps. The Op Amp Comparator module 4 does not have the associated Op Amp. Inputs for these comparators can be selected from I/O pins or the Control Digital-to-Analog Converter 3 (CDAC3).

## Using The Library

CMP Peripheral library provides API's that can be used to perform below functionalities on the CMP peripheral.

- Initialize the CMP.

- Turn on and turn off the individual comparators inside the CMP peripheral.

- Register callback function for the five comparators inside the CMP peripheral.

- Get the status of individual comparator output

## Library Interface

peripheral library provides the following interfaces:

Functions

Name | Description
--- | ---
CMP_Initialize | Initializes CMP module of the device
CMP_1_CompareEnable | Turn on CMP1
CMP_1_CompareDisable | Turn off CMP1
CMP_2_CompareEnable | Turn on CMP2
CMP_2_CompareDisable | Turn off CMP2
CMP_3_CompareEnable | Turn on CMP3
CMP_3_CompareDisable | Turn off CMP3
CMP_4_CompareEnable | Turn on CMP4
CMP_4_CompareDisable | Turn off CMP4
CMP_5_CompareEnable | Turn on CMP5
CMP_5_CompareDisable | Turn off CMP5
CMP_StatusGet | Returns the output state of a comparator
CMP_1_CallbackRegister | Registers the function to be called from interrupt
CMP_2_CallbackRegister | Registers the function to be called from interrupt
CMP_3_CallbackRegister | Registers the function to be called from interrupt
CMP_4_CallbackRegister | Registers the function to be called from interrupt
CMP_5_CallbackRegister | Registers the function to be called from interrupt

Data types and constants

Name | Type | Description
--- | --- | ---
CMP_STATUS_SOURCE | Enum | Denotes a specific comparator output status
CMP_CALLBACK | Typedef | Defines the function pointer data type and function signature for the CMP callback function