RMU - Reset Management Unit#

Reset Management Unit (RMU) Peripheral API.

This module contains functions to control the RMU peripheral of Silicon Labs 32-bit MCUs and SoCs. RMU ensures correct reset operation and is responsible for connecting the different reset sources to the reset lines of the MCU or SoC.

Enumerations#

enum

RMU_ResetMode_TypeDef {

rmuResetModeDisabled = _RMU_CTRL_PINRMODE_DISABLED

rmuResetModeLimited = _RMU_CTRL_PINRMODE_LIMITED

rmuResetModeExtended = _RMU_CTRL_PINRMODE_EXTENDED

rmuResetModeFull = _RMU_CTRL_PINRMODE_FULL

}

RMU reset modes.

enum

RMU_Reset_TypeDef {

rmuResetLockUp = _RMU_CTRL_LOCKUPRMODE_MASK

rmuResetWdog = _RMU_CTRL_WDOGRMODE_MASK

rmuResetCoreLockup = _RMU_CTRL_LOCKUPRMODE_MASK

rmuResetSys = _RMU_CTRL_SYSRMODE_MASK

rmuResetPin = _RMU_CTRL_PINRMODE_MASK

}

RMU controlled peripheral reset control and reset source control.

Functions#

void

RMU_ResetControl(RMU_Reset_TypeDef reset, RMU_ResetMode_TypeDef mode)

Disable/enable reset for various peripherals and signal sources.

void

RMU_ResetCauseClear(void)

Clear the reset cause register.

uint32_t

RMU_ResetCauseGet(void)

Get the cause of the last reset.

void

RMU_UserResetStateSet(uint32_t userState)

Set user reset state.

uint32_t

RMU_UserResetStateGet(void)

Get user reset state.

Macros#

#define

RMU_LockupResetDisable (A)

RMU_LockupResetDisable kept for backwards compatibility.

Enumeration Documentation#

RMU_ResetMode_TypeDef#

RMU_ResetMode_TypeDef

RMU reset modes.

Enumerator
rmuResetModeDisabled	Reset mode disabled.
rmuResetModeLimited	Reset mode limited.
rmuResetModeExtended	Reset mode extended.
rmuResetModeFull	Reset mode full.

RMU_Reset_TypeDef#

RMU_Reset_TypeDef

RMU controlled peripheral reset control and reset source control.

Enumerator
rmuResetLockUp	Cortex lockup reset select.
rmuResetWdog	WDOG reset select.
rmuResetCoreLockup	Cortex lockup reset select.
rmuResetSys	SYSRESET select.
rmuResetPin	Pin reset select.

Function Documentation#

RMU_ResetControl#

void RMU_ResetControl (RMU_Reset_TypeDef reset, RMU_ResetMode_TypeDef mode)

Disable/enable reset for various peripherals and signal sources.

Parameters

Type	Direction	Argument Name	Description
RMU_Reset_TypeDef	[in]	reset	Reset types to enable/disable.s
RMU_ResetMode_TypeDef	[in]	mode	Reset mode.

RMU_ResetCauseClear#

void RMU_ResetCauseClear (void )

Clear the reset cause register.

Parameters

Type	Direction	Argument Name	Description
void	N/A

This function clears all the reset cause bits of the RSTCAUSE register. The reset cause bits must be cleared by software before a new reset occurs. Otherwise, reset causes may accumulate. See RMU_ResetCauseGet().

RMU_ResetCauseGet#

uint32_t RMU_ResetCauseGet (void )

Get the cause of the last reset.

Parameters

Type	Direction	Argument Name	Description
void	N/A

To be useful, the reset cause must be cleared by software before a new reset occurs. Otherwise, reset causes may accumulate. See RMU_ResetCauseClear(). This function call will return the main cause for reset, which can be a bit mask (several causes) and clear away "noise".

Returns

A reset cause mask. See the reference manual for a description of the reset cause mask.

RMU_UserResetStateSet#

void RMU_UserResetStateSet (uint32_t userState)

Set user reset state.

Parameters

Type	Direction	Argument Name	Description
uint32_t	[in]	userState	User state to set

Reset only by a Power-on-reset and a pin reset.

RMU_UserResetStateGet#

uint32_t RMU_UserResetStateGet (void )

Get user reset state.

Parameters

Type	Direction	Argument Name	Description
void	N/A

Reset only by a Power-on-reset and a pin reset.

Returns

Reset surviving user state.