1.21.4 Comparator (CMP)
The CMP peripheral consists of two comparators (CMP1 and CMP2). Inputs for these comparators can be selected from various sources such as I/O pins, CVR and internal 1.2 volts reference (IVREF).
Using The Library
CMP Peripheral library provides API's that can be used to perform below functionalities on the CMP peripheral.
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Initialize the CMP.
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Turn on and turn off the individual comparators inside the CMP peripheral.
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Register callback function for the two comparators inside the CMP peripheral.
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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_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 |
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 |