Detailed Description

Energy management unit (EMU) peripheral API.

Version: 5.1.2

License

Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:

The origin of this software must not be misrepresented; you must not claim that you wrote the original software.
Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
This notice may not be removed or altered from any source distribution.

DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Silicon Labs has no obligation to support this Software. Silicon Labs is providing the Software "AS IS", with no express or implied warranties of any kind, including, but not limited to, any implied warranties of merchantability or fitness for any particular purpose or warranties against infringement of any proprietary rights of a third party.

Silicon Labs will not be liable for any consequential, incidental, or special damages, or any other relief, or for any claim by any third party, arising from your use of this Software.

Definition in file em_emu.h.

#include "em_device.h"
#include <stdbool.h>
#include "em_bus.h"

Go to the source code of this file.

Data Structures
struct	EMU_DCDCInit_TypeDef

struct	EMU_EM01Init_TypeDef

struct	EMU_EM23Init_TypeDef

struct	EMU_EM4Init_TypeDef

struct	EMU_VmonHystInit_TypeDef

struct	EMU_VmonInit_TypeDef

Macros
#define	EMU_DCDCINIT_DEFAULT

#define	EMU_EM01INIT_DEFAULT

#define	EMU_EM23INIT_DEFAULT

#define	EMU_EM4INIT_DEFAULT

#define	EMU_VMONHYSTINIT_DEFAULT

#define	EMU_VMONINIT_DEFAULT

#define	emuDcdcLnFastTransient 160

#define	emuDcdcLnHighEfficiency -1

Typedefs
typedef int16_t	EMU_DcdcLnReverseCurrentControl_TypeDef

Enumerations
enum	EMU_BODMode_TypeDef { emuBODMode_Active, emuBODMode_Inactive }

enum	EMU_DcdcAnaPeripheralPower_TypeDef { emuDcdcAnaPeripheralPower_AVDD = EMU_PWRCTRL_ANASW_AVDD, emuDcdcAnaPeripheralPower_DCDC = EMU_PWRCTRL_ANASW_DVDD }

enum	EMU_DcdcConductionMode_TypeDef { emuDcdcConductionMode_ContinuousLN, emuDcdcConductionMode_DiscontinuousLN }

enum	EMU_DcdcLnCompCtrl_TypeDef { emuDcdcLnCompCtrl_1u0F, emuDcdcLnCompCtrl_4u7F }

enum	EMU_DcdcLnRcoBand_TypeDef { emuDcdcLnRcoBand_3MHz = 0, emuDcdcLnRcoBand_4MHz = 1, emuDcdcLnRcoBand_5MHz = 2, emuDcdcLnRcoBand_6MHz = 3, emuDcdcLnRcoBand_7MHz = 4, emuDcdcLnRcoBand_8MHz = 5, emuDcdcLnRcoBand_9MHz = 6, emuDcdcLnRcoBand_10MHz = 7 }

enum	EMU_DcdcMode_TypeDef { emuDcdcMode_Bypass = EMU_DCDCCTRL_DCDCMODE_BYPASS, emuDcdcMode_LowNoise = EMU_DCDCCTRL_DCDCMODE_LOWNOISE, emuDcdcMode_LowPower = EMU_DCDCCTRL_DCDCMODE_LOWPOWER }

enum	EMU_EM4PinRetention_TypeDef { emuPinRetentionDisable = EMU_EM4CTRL_EM4IORETMODE_DISABLE, emuPinRetentionEm4Exit = EMU_EM4CTRL_EM4IORETMODE_EM4EXIT, emuPinRetentionLatch = EMU_EM4CTRL_EM4IORETMODE_SWUNLATCH }

enum	EMU_EM4State_TypeDef { emuEM4Hibernate = EMU_EM4CTRL_EM4STATE_EM4H, emuEM4Shutoff = EMU_EM4CTRL_EM4STATE_EM4S }

enum	EMU_PeripheralRetention_TypeDef { emuPeripheralRetention_LEUART0 = _EMU_EM23PERNORETAINCTRL_LEUART0DIS_MASK, emuPeripheralRetention_CSEN = _EMU_EM23PERNORETAINCTRL_CSENDIS_MASK, emuPeripheralRetention_LESENSE0 = _EMU_EM23PERNORETAINCTRL_LESENSE0DIS_MASK, emuPeripheralRetention_LETIMER0 = _EMU_EM23PERNORETAINCTRL_LETIMER0DIS_MASK, emuPeripheralRetention_ADC0 = _EMU_EM23PERNORETAINCTRL_ADC0DIS_MASK, emuPeripheralRetention_IDAC0 = _EMU_EM23PERNORETAINCTRL_IDAC0DIS_MASK, emuPeripheralRetention_VDAC0 = _EMU_EM23PERNORETAINCTRL_DAC0DIS_MASK, emuPeripheralRetention_I2C1 = _EMU_EM23PERNORETAINCTRL_I2C1DIS_MASK, emuPeripheralRetention_I2C0 = _EMU_EM23PERNORETAINCTRL_I2C0DIS_MASK, emuPeripheralRetention_ACMP1 = _EMU_EM23PERNORETAINCTRL_ACMP1DIS_MASK, emuPeripheralRetention_ACMP0 = _EMU_EM23PERNORETAINCTRL_ACMP0DIS_MASK, emuPeripheralRetention_PCNT2 = _EMU_EM23PERNORETAINCTRL_PCNT2DIS_MASK, emuPeripheralRetention_PCNT1 = _EMU_EM23PERNORETAINCTRL_PCNT1DIS_MASK, emuPeripheralRetention_PCNT0 = _EMU_EM23PERNORETAINCTRL_PCNT0DIS_MASK, emuPeripheralRetention_D1, emuPeripheralRetention_D2, emuPeripheralRetention_ALL }

enum	EMU_PowerConfig_TypeDef { emuPowerConfig_DcdcToDvdd }

enum	EMU_VmonChannel_TypeDef { emuVmonChannel_AVDD, emuVmonChannel_ALTAVDD, emuVmonChannel_DVDD, emuVmonChannel_IOVDD0 }

enum	EMU_VScaleEM01_TypeDef { emuVScaleEM01_HighPerformance = _EMU_STATUS_VSCALE_VSCALE2, emuVScaleEM01_LowPower = _EMU_STATUS_VSCALE_VSCALE0 }

enum	EMU_VScaleEM23_TypeDef { emuVScaleEM23_FastWakeup = _EMU_CTRL_EM23VSCALE_VSCALE2, emuVScaleEM23_LowPower = _EMU_CTRL_EM23VSCALE_VSCALE0 }

enum	EMU_VScaleEM4H_TypeDef { emuVScaleEM4H_FastWakeup = _EMU_CTRL_EM4HVSCALE_VSCALE2, emuVScaleEM4H_LowPower = _EMU_CTRL_EM4HVSCALE_VSCALE0 }

Functions
void	EMU_DCDCConductionModeSet (EMU_DcdcConductionMode_TypeDef conductionMode, bool rcoDefaultSet)
	Set DCDC LN regulator conduction mode. More...

bool	EMU_DCDCInit (const EMU_DCDCInit_TypeDef *dcdcInit)
	Configure DCDC regulator. More...

void	EMU_DCDCLnRcoBandSet (EMU_DcdcLnRcoBand_TypeDef band)
	Set DCDC Low-noise RCO band. More...

void	EMU_DCDCModeSet (EMU_DcdcMode_TypeDef dcdcMode)
	Set DCDC regulator operating mode. More...

void	EMU_DCDCOptimizeSlice (uint32_t em0LoadCurrent_mA)
	Optimize DCDC slice count based on the estimated average load current in EM0. More...

bool	EMU_DCDCOutputVoltageSet (uint32_t mV, bool setLpVoltage, bool setLnVoltage)
	Set DCDC output voltage. More...

bool	EMU_DCDCPowerOff (void)
	Power off the DCDC regulator. More...

void	EMU_EM01Init (const EMU_EM01Init_TypeDef *em01Init)
	Update EMU module with Energy Mode 0 and 1 configuration. More...

void	EMU_EM23Init (const EMU_EM23Init_TypeDef *em23Init)
	Update EMU module with Energy Mode 2 and 3 configuration. More...

__STATIC_INLINE void	EMU_EM2Block (void)
	Block entering EM2 or higher number energy modes.

__STATIC_INLINE void	EMU_EM2UnBlock (void)
	Unblock entering EM2 or higher number energy modes.

void	EMU_EM4Init (const EMU_EM4Init_TypeDef *em4Init)
	Update EMU module with Energy Mode 4 configuration. More...

__STATIC_INLINE void	EMU_EnterEM1 (void)
	Enter energy mode 1 (EM1).

void	EMU_EnterEM2 (bool restore)
	Enter energy mode 2 (EM2). More...

void	EMU_EnterEM3 (bool restore)
	Enter energy mode 3 (EM3). More...

void	EMU_EnterEM4 (void)
	Enter energy mode 4 (EM4). More...

void	EMU_EnterEM4H (void)
	Enter energy mode 4 hibernate (EM4H). More...

void	EMU_EnterEM4S (void)
	Enter energy mode 4 shutoff (EM4S). More...

__STATIC_INLINE void	EMU_IntClear (uint32_t flags)
	Clear one or more pending EMU interrupts. More...

__STATIC_INLINE void	EMU_IntDisable (uint32_t flags)
	Disable one or more EMU interrupts. More...

__STATIC_INLINE void	EMU_IntEnable (uint32_t flags)
	Enable one or more EMU interrupts. More...

__STATIC_INLINE uint32_t	EMU_IntGet (void)
	Get pending EMU interrupt flags. More...

__STATIC_INLINE uint32_t	EMU_IntGetEnabled (void)
	Get enabled and pending EMU interrupt flags. Useful for handling more interrupt sources in the same interrupt handler. More...

__STATIC_INLINE void	EMU_IntSet (uint32_t flags)
	Set one or more pending EMU interrupts. More...

__STATIC_INLINE void	EMU_Lock (void)
	Lock the EMU in order to protect its registers against unintended modification. More...

void	EMU_MemPwrDown (uint32_t blocks)
	Power down memory block. More...

void	EMU_PeripheralRetention (EMU_PeripheralRetention_TypeDef periMask, bool enable)
	Set EM2 3 peripheral retention control. More...

__STATIC_INLINE void	EMU_PowerLock (void)
	Lock the EMU regulator control registers in order to protect against unintended modification.

__STATIC_INLINE void	EMU_PowerUnlock (void)
	Unlock the EMU power control registers so that writing to locked registers again is possible.

void	EMU_RamPowerDown (uint32_t start, uint32_t end)
	Power down RAM memory blocks. More...

void	EMU_Restore (void)
	Restore CMU HF clock select state, oscillator enable and voltage scaling (if available) after EMU_EnterEM2() or EMU_EnterEM3() are called with the restore parameter set to false. Calling this function is equivalent to calling EMU_EnterEM2() or EMU_EnterEM3() with the restore parameter set to true, but it allows the application to evaluate the wakeup reason before restoring state.

__STATIC_INLINE void	EMU_UnlatchPinRetention (void)
	When EM4 pin retention is set to emuPinRetentionLatch, then pins are retained through EM4 entry and wakeup. The pin state is released by calling this function. The feature allows peripherals or GPIO to be re-initialized after EM4 exit (reset), and when the initialization is done, this function can release pins and return control to the peripherals or GPIO.

__STATIC_INLINE void	EMU_Unlock (void)
	Unlock the EMU so that writing to locked registers again is possible.

void	EMU_UpdateOscConfig (void)
	Update EMU module with CMU oscillator selection/enable status. More...

bool	EMU_VmonChannelStatusGet (EMU_VmonChannel_TypeDef channel)
	Get the status of a voltage monitor channel. More...

void	EMU_VmonEnable (EMU_VmonChannel_TypeDef channel, bool enable)
	Enable or disable a VMON channel. More...

void	EMU_VmonHystInit (const EMU_VmonHystInit_TypeDef *vmonInit)
	Initialize VMON channel with hysteresis (separate rise and fall triggers). More...

void	EMU_VmonInit (const EMU_VmonInit_TypeDef *vmonInit)
	Initialize VMON channel. More...

__STATIC_INLINE bool	EMU_VmonStatusGet (void)
	Get the status of the voltage monitor (VMON). More...

void	EMU_VScaleEM01 (EMU_VScaleEM01_TypeDef voltage, bool wait)
	Force voltage scaling in EM0 and 1 to a specific voltage level. More...

void	EMU_VScaleEM01ByClock (uint32_t clockFrequency, bool wait)
	Voltage scale in EM0 and 1 by clock frequency. More...

__STATIC_INLINE EMU_VScaleEM01_TypeDef	EMU_VScaleGet (void)
	Get current voltage scaling level. More...

__STATIC_INLINE void	EMU_VScaleWait (void)
	Wait for voltage scaling to complete.

Detailed Description

License

Data Structures

Macros

Typedefs

Enumerations

Functions