3.8.16 Reset Controller (RSTC)
The Reset Controller handles all resets of the system and is driven by power-on reset cells (POR), supply monitor cells (SM), software, the external reset pin, and peripheral events. The RSTC reports the type of reset.
The RSTC drives independently or simultaneously the external reset and the peripheral and dual processor resets.
The RSTC generates following reset signals:
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Processor and peripherals reset line (also resets the Watchdog Timers)
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Coprocessor (second processor) reset line
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Embedded peripherals driven by the coprocessor
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Power Management Controller (PMC) reset line
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NRST pin
Using The Library
The reset controller (RSTC) peripheral library provides API to find the cause of last device reset, generate specific reset, assert/de-assert reset of co-processor and its peripherals.
Library Interface
Reset Controller peripheral library provides the following interfaces:
Functions
| Name | Description |
|---|---|
| RSTC_Initialize | Initializes RSTC peripheral based on MCC configuration |
| RSTC_ResetCauseGet | Reports the cause of the latest reset |
| RSTC_NRSTPinRead | Reads the NRST pin level, sampled on each "Master Clock(MCK)" rising edge |
| RSTC_CoProcessorEnable | Asserts/de-asserts reset on co-processor |
| RSTC_CoProcessorPeripheralEnable | Asserts/de-asserts reset on co-processor peripherals |
| RSTC_CallbackRegister | Allows application to register callback with PLIB |
Data types and constants
| Name | Type | Description |
|---|---|---|
| RSTC_RESET_CAUSE | Typedef | Identifies the cause of reset |
| RSTC_RESET_TYPE | Enum | Identifies the type of reset |