3.7 CMP - Comparator
3.7.1 Introduction
The MPLAB® Code Configurator (MCC) Melody Comparator Peripheral Library (PLIBs) drivers generates APIs to support CMP-specific peripheral functionality on target MCUs.
The Comparator (CMP) is used to interface analog circuits to a digital circuit by comparing two analog voltages and providing a digital indication of their relative magnitudes. Comparators are very useful mixed signal building blocks because they provide analog functionality independent of program execution.
3.7.2 Supported Device Families
| PIC12/16F150x | PIC12/16F157x | PIC12/16F161x |
| PIC12/16F184x | PIC16F145x | PIC16F153xx |
| PIC16F170x | PIC16F171x | PIC16F171xx |
| PIC16F176x | PIC16F177x | PIC16F178x |
| PIC16F180xx | PIC16F181xx | PIC16F183xx |
| PIC16F184xx | PIC16F188xx | PIC16F191xx |
| PIC16F194x | PIC18F-K20 | PIC18F-K22 |
| PIC18F-K40 | PIC18F-K42 | PIC18F-K50 |
| PIC18F-K80 | PIC18F-K83 | PIC18F-K90 |
| PIC18F-Q10 | PIC18F-Q24 | PIC18F-Q40 |
| PIC18F-Q41 | PIC18F-Q43 | PIC18F-Q71 |
| PIC18F-Q83 | PIC18F-Q84 |
3.7.3 Required header files:
#include "mcc_generated_files/comparator/cmp[x].h"3.7.4 Module Documentation
3.7.4.1 CMP1
This file contains the API prototypes for the CMP1 module.
3.7.4.1.1 Module description
This file contains the API prototypes for the CMP1 module.
Functions
void CMPx_Initialize (void)
Initializes the CMP1 module. This is called only once during system initialization, and before calling other CMP1 APIs.
bool CMPx_GetOutputStatus (void)
Returns the CMP1 output status.
void CMPx_ISR (void)
Implements the Interrupt Service Routine (ISR) for the CMP interrupt.
3.7.4.1.2 Function Documentation
CMPx_GetOutputStatus()
bool CMPx_GetOutputStatus (void )
Returns the CMP1 output status.
CMPx_Initialize() is already called. |
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CMPx_Initialize()
void CMPx_Initialize (void )
Initializes the CMP1 module. This is called only once during system initialization, and before calling other CMP1 APIs.
Section: Included FilesSection: CMP1 APIs
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None. |
Section: Included FilesSection: CMP1 APIs
CMPx_ISR()
void CMPx_ISR (void )
Implements the Interrupt Service Routine (ISR) for the CMP interrupt.
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None. |
3.7.5 File Documentation
3.7.5.1 source/cmp1.c File Reference
This file contains the API implementation for the CMP1 driver.
#include <xc.h> #include "../cmp1.h"
3.7.5.1.1 Functions
void CMPx_Initialize (void)
Initializes the CMP1 module. This is called only once during system initialization, and before calling other CMP1 APIs.
bool CMPx_GetOutputStatus (void)
Returns the CMP1 output status.
void CMPx_ISR (void)
Implements the Interrupt Service Routine (ISR) for the CMP interrupt.
3.7.5.1.2 Detailed Description
This file contains the API implementation for the CMP1 driver.
CMP1 Generated Driver File.
3.7.5.2 source/cmp1.h File Reference
#include <stdint.h> #include <stdbool.h>
3.7.5.2.1 Functions
void CMPx_Initialize (void)
Initializes the CMP1 module. This is called only once during system initialization, and before calling other CMP1 APIs.
bool CMPx_GetOutputStatus (void)
Returns the CMP1 output status.
void CMPx_ISR (void)
Implements the Interrupt Service Routine (ISR) for the CMP interrupt.
3.7.5.2.2 Detailed Description
CMP1 Generated Driver API Header File.