Reset Controller

Reset cause / reset controller driver.

Reports the cause of the most recent reset. The HAL driver reads the SoC's reset-cause register exactly once in its initialize() callback (which clears the latch in HW), so subsequent calls to reset_get() always see a stable value for the current boot.

The integer values of reset_cause_t intentionally match the CW_RESET_* constants used by libcoldwave (libcoldwave/coldwave_defines.h). A static_assert in libcoldwave enforces the equality at compile time — if you change a value here, the libcoldwave build will fail.

Types

	Name
enum	reset_cause_t

Functions Overview

	Name
reset_cause_t	reset_get(void ) Get the latched reset cause for the current boot.

Types Documentation

enum reset_cause_t

Enumerator	Description
cwResetUnknown
cwResetPowerOn
cwResetSoftware
cwResetWatchdog
cwResetBrownout
cwResetCrash
cwResetDeepSleep
cwResetUser
cwResetExternalPin
cwResetLockup

Function Details

function reset_get

reset_cause_t reset_get(
    void 
)

Get the latched reset cause for the current boot.

Return: reset_cause_t value, or cwResetUnknown if no reset driver is configured on this platform.

Lazy-opens the "reset" device on first call. The HAL driver has already latched the hardware register at its init time; this call only reads the cached value.