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Static Public Member Functions
ResetReason Class Reference

A platform-independent method of checking the cause of the last system reset. More...

#include <ResetReason.h>

Static Public Member Functions

static reset_reason_t get ()
 Get the platform independent reason code for the last system reset. More...
 
static uint32_t get_raw ()
 Get the platform specific reason code for the last system reset. More...
 

Detailed Description

A platform-independent method of checking the cause of the last system reset.

When the system restarts, the reason for the restart is contained in the system registers at boot time in a platform specific manner. This API provides a generic method of fetching the reason for the restart.

Definition at line 34 of file ResetReason.h.

Member Function Documentation

static reset_reason_t get ( )
static

Get the platform independent reason code for the last system reset.

Returns
enum containing the last reset reason for the board.

Example:

if (reason == RESET_REASON_WATCHDOG) {
printf("Watchdog reset\n");
rollback();
}
static uint32_t get_raw ( )
static

Get the platform specific reason code for the last system reset.

Platform specific reasons that are not covered by the reset_reason_t enum will cause the ResetReason::get() function to return RESET_REASON_PLATFORM. In order to get the actual reason the register value must be fetched directly using this function and interpreted in a platform specific manner.

Returns
value containing the reset reason register for the given platform. If the platform contains reset reasons across multiple registers they will be concatenated here.

Example:

const uint32_t platform_reason = ResetReason::get_raw();
}
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