EMUEMLIB
Detailed Description
Energy Management Unit (EMU) Peripheral API.
This module contains functions to control the EMU peripheral of Silicon Labs 32-bit MCUs and SoCs. The EMU handles the different low energy modes in Silicon Labs microcontrollers.
Data Structures |
|
struct | EMU_DCDCInit_TypeDef |
struct | EMU_EM23Init_TypeDef |
struct | EMU_EM4Init_TypeDef |
struct | EMU_VmonHystInit_TypeDef |
struct | EMU_VmonInit_TypeDef |
Macros |
|
#define | EMU_DCDCINIT_DEFAULT |
#define | EMU_EM23INIT_DEFAULT |
#define | EMU_EM4INIT_DEFAULT |
#define | EMU_VMONHYSTINIT_DEFAULT |
#define | EMU_VMONINIT_DEFAULT |
#define | emuDcdcLnFastTransient 160 |
#define | emuDcdcLnHighEfficiency -1 |
#define | PWRCFG_DCDCTODVDD_VMAX 3000U |
#define | PWRCFG_DCDCTODVDD_VMIN 1800U |
Typedefs |
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typedef int16_t | EMU_DcdcLnReverseCurrentControl_TypeDef |
Functions |
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void | EMU_DCDCConductionModeSet ( EMU_DcdcConductionMode_TypeDef conductionMode, bool rcoDefaultSet) |
Set DCDC LN regulator conduction mode.
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bool | EMU_DCDCInit (const EMU_DCDCInit_TypeDef *dcdcInit) |
Configure the DCDC regulator.
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void | EMU_DCDCLnRcoBandSet ( EMU_DcdcLnRcoBand_TypeDef band) |
Set DCDC Low-noise RCO band.
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void | EMU_DCDCModeSet ( EMU_DcdcMode_TypeDef dcdcMode) |
Set DCDC regulator operating mode.
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void | EMU_DCDCOptimizeSlice (uint32_t em0LoadCurrentmA) |
Optimize the DCDC slice count based on the estimated average load current in EM0.
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bool | EMU_DCDCOutputVoltageSet (uint32_t mV, bool setLpVoltage, bool setLnVoltage) |
Set the DCDC output voltage.
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bool | EMU_DCDCPowerOff (void) |
Power off the DCDC regulator.
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void | EMU_EM23Init (const EMU_EM23Init_TypeDef *em23Init) |
Update the EMU module with Energy Mode 2 and 3 configuration.
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__STATIC_INLINE void | EMU_EM2Block (void) |
Block entering EM2 or higher number energy modes.
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__STATIC_INLINE void | EMU_EM2UnBlock (void) |
Unblock entering EM2 or higher number energy modes.
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void | EMU_EM4Init (const EMU_EM4Init_TypeDef *em4Init) |
Update the EMU module with Energy Mode 4 configuration.
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__STATIC_INLINE void | EMU_EnterEM1 (void) |
Enter energy mode 1 (EM1).
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void | EMU_EnterEM2 (bool restore) |
Enter energy mode 2 (EM2).
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void | EMU_EnterEM3 (bool restore) |
Enter energy mode 3 (EM3).
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void | EMU_EnterEM4 (void) |
Enter energy mode 4 (EM4).
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void | EMU_EnterEM4H (void) |
Enter energy mode 4 hibernate (EM4H).
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void | EMU_EnterEM4S (void) |
Enter energy mode 4 shutoff (EM4S).
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__STATIC_INLINE void | EMU_IntClear (uint32_t flags) |
Clear one or more pending EMU interrupts.
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__STATIC_INLINE void | EMU_IntDisable (uint32_t flags) |
Disable one or more EMU interrupts.
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__STATIC_INLINE void | EMU_IntEnable (uint32_t flags) |
Enable one or more EMU interrupts.
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__STATIC_INLINE uint32_t | EMU_IntGet (void) |
Get pending EMU interrupt flags.
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__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.
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__STATIC_INLINE void | EMU_IntSet (uint32_t flags) |
Set one or more pending EMU interrupts.
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__STATIC_INLINE void | EMU_Lock (void) |
Lock EMU registers in order to protect them against unintended modification.
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void | EMU_MemPwrDown (uint32_t blocks) |
Power down memory block.
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__STATIC_INLINE void | EMU_PowerLock (void) |
Lock the EMU regulator control registers in order to protect against unintended modification.
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__STATIC_INLINE void | EMU_PowerUnlock (void) |
Unlock the EMU power control registers so that writing to locked registers again is possible.
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void | EMU_RamPowerDown (uint32_t start, uint32_t end) |
Power down RAM memory blocks.
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void | EMU_RamPowerUp (void) |
Power up all available RAM memory blocks.
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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.
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void | EMU_Save (void) |
Save the CMU HF clock select state, oscillator enable, and voltage scaling (if available) before
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 state to be saved without going to sleep. The state can be restored manually by calling
EMU_Restore()
.
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void | EMU_SetBiasMode ( EMU_BiasMode_TypeDef mode) |
Adjust the bias refresh rate.
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__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 initialization is done, this function can release pins and return control to the peripherals or GPIO.
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__STATIC_INLINE void | EMU_Unlock (void) |
Unlock the EMU so that writing to locked registers again is possible.
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void | EMU_UpdateOscConfig (void) |
Update EMU module with CMU oscillator selection/enable status.
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bool | EMU_VmonChannelStatusGet ( EMU_VmonChannel_TypeDef channel) |
Get the status of a voltage monitor channel.
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void | EMU_VmonEnable ( EMU_VmonChannel_TypeDef channel, bool enable) |
Enable or disable a VMON channel.
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void | EMU_VmonHystInit (const EMU_VmonHystInit_TypeDef *vmonInit) |
Initialize a VMON channel with hysteresis (separate rise and fall triggers).
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void | EMU_VmonInit (const EMU_VmonInit_TypeDef *vmonInit) |
Initialize a VMON channel.
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__STATIC_INLINE bool | EMU_VmonStatusGet (void) |
Get the status of the voltage monitor (VMON).
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Macro Definition Documentation
#define EMU_DCDCINIT_DEFAULT |
Default DCDC initialization.
Definition at line
602
of file
em_emu.h
.
#define EMU_EM23INIT_DEFAULT |
Default initialization of EM2 and 3 configuration.
Definition at line
458
of file
em_emu.h
.
Referenced by BSP_initEmu() .
#define EMU_EM4INIT_DEFAULT |
Default initialization of EM4 configuration (Series 1 without VSCALE).
Definition at line
513
of file
em_emu.h
.
Referenced by UTIL_shutdown() .
#define EMU_VMONHYSTINIT_DEFAULT |
Default VMON Hysteresis initialization structure.
Definition at line
697
of file
em_emu.h
.
#define EMU_VMONINIT_DEFAULT |
Default VMON initialization structure.
Definition at line
676
of file
em_emu.h
.
#define emuDcdcLnFastTransient   160 |
Default reverse current for fast transient response mode (low noise).
Definition at line
196
of file
em_emu.h
.
#define emuDcdcLnHighEfficiency   -1 |
High efficiency mode. EMU_DCDCZDETCTRL_ZDETILIMSEL is "don't care".
Definition at line
193
of file
em_emu.h
.
Typedef Documentation
typedef int16_t EMU_DcdcLnReverseCurrentControl_TypeDef |
DCDC Forced CCM and reverse current limiter control. Positive values have unit mA.
Definition at line
190
of file
em_emu.h
.
Enumeration Type Documentation
enum EMU_BiasMode_TypeDef |
Bias mode configurations.
Definition at line
261
of file
em_emu.h
.
enum EMU_BODMode_TypeDef |
DCDC to DVDD mode analog peripheral power supply select.
Definition at line
180
of file
em_emu.h
.
DCDC conduction modes.
Definition at line
168
of file
em_emu.h
.
DCDC Low-noise RCO band select.
Definition at line
201
of file
em_emu.h
.
enum EMU_DcdcMode_TypeDef |
Enumerator | |
---|---|
emuPinRetentionDisable |
No Retention: Pads enter reset state when entering EM4. |
emuPinRetentionEm4Exit |
Retention through EM4: Pads enter reset state when exiting EM4. |
emuPinRetentionLatch |
Retention through EM4 and wakeup: call EMU_UnlatchPinRetention() to release pins from retention after EM4 wakeup. |
Definition at line
135
of file
em_emu.h
.
enum EMU_EM4State_TypeDef |
VMON channels.
Definition at line
245
of file
em_emu.h
.
Function Documentation
void EMU_DCDCConductionModeSet | ( | EMU_DcdcConductionMode_TypeDef |
conductionMode,
|
bool |
rcoDefaultSet
|
||
) |
Set DCDC LN regulator conduction mode.
- Parameters
-
[in] conductionMode
DCDC LN conduction mode. [in] rcoDefaultSet
The default DCDC RCO band for the conductionMode will be used if true. Otherwise, the current RCO configuration is used.
Definition at line
1940
of file
em_emu.c
.
References _EMU_DCDCCTRL_DCDCMODE_MASK , _EMU_DCDCLNFREQCTRL_RCOBAND_MASK , _EMU_DCDCLNFREQCTRL_RCOBAND_SHIFT , EMU , EMU_DCDCLnRcoBandSet() , EMU_DCDCMISCCTRL_LNFORCECCM , EMU_DCDCModeSet() , EMU_DCDCOptimizeSlice() , EMU_DCDCSYNC_DCDCCTRLBUSY , EMU_IF_DCDCINBYPASS , EMU_IFC_DCDCINBYPASS , EMU_IntClear() , EMU_IntGet() , emuDcdcConductionMode_DiscontinuousLN , emuDcdcLnRcoBand_3MHz , emuDcdcLnRcoBand_4MHz , emuDcdcLnRcoBand_7MHz , and emuDcdcMode_Bypass .
bool EMU_DCDCInit | ( | const EMU_DCDCInit_TypeDef * |
dcdcInit
|
) |
Configure the DCDC regulator.
- Note
- Do not call this function if the power circuit is configured for NODCDC as described in the Power Configurations section of the Reference Manual. Instead, call EMU_DCDCPowerOff() .
- Parameters
-
[in] dcdcInit
The DCDC initialization structure.
- Returns
- True if initialization parameters are valid.
Definition at line
1994
of file
em_emu.c
.
References _EMU_DCDCMISCCTRL_LNFORCECCM_MASK , _EMU_PWRCFG_PWRCFG_MASK , _EMU_PWRCTRL_ANASW_SHIFT , EMU_DCDCInit_TypeDef::anaPeripheralPower , BUS_RegBitWrite() , EMU_DCDCInit_TypeDef::dcdcLnCompCtrl , EMU_DCDCInit_TypeDef::dcdcMode , EMU_DCDCInit_TypeDef::em01LoadCurrent_mA , EMU_DCDCInit_TypeDef::em234LoadCurrent_uA , EMU , EMU_DCDCMISCCTRL_LNFORCECCM , EMU_DCDCModeSet() , EMU_DCDCOptimizeSlice() , EMU_DCDCOutputVoltageSet() , EMU_PWRCFG_PWRCFG_DCDCTODVDD , emuDcdcAnaPeripheralPower_DCDC , emuDcdcMode_LowNoise , EMU_DCDCInit_TypeDef::maxCurrent_mA , EMU_DCDCInit_TypeDef::mVout , and EMU_DCDCInit_TypeDef::reverseCurrentControl .
Referenced by BSP_initDcdc() .
void EMU_DCDCLnRcoBandSet | ( | EMU_DcdcLnRcoBand_TypeDef |
band
|
) |
Set DCDC Low-noise RCO band.
- Parameters
-
[in] band
RCO band to set.
Definition at line
2348
of file
em_emu.c
.
References _EMU_DCDCLNFREQCTRL_RCOBAND_MASK , _EMU_DCDCLNFREQCTRL_RCOBAND_SHIFT , _EMU_DCDCMISCCTRL_LNFORCECCM_SHIFT , BUS_RegBitRead() , EMU , EMU_DCDCOptimizeSlice() , and emuDcdcLnRcoBand_4MHz .
Referenced by EMU_DCDCConductionModeSet() .
void EMU_DCDCModeSet | ( | EMU_DcdcMode_TypeDef |
dcdcMode
|
) |
Set DCDC regulator operating mode.
- Parameters
-
[in] dcdcMode
DCDC mode.
Definition at line
1868
of file
em_emu.c
.
References _EMU_DCDCCLIMCTRL_BYPLIMEN_SHIFT , _EMU_DCDCCTRL_DCDCMODE_MASK , BUS_RegBitWrite() , EMU , EMU_DCDCCTRL_DCDCMODE_BYPASS , EMU_DCDCCTRL_DCDCMODE_LOWNOISE , EMU_DCDCCTRL_DCDCMODE_OFF , EMU_DCDCSYNC_DCDCCTRLBUSY , EMU_IF_DCDCLNRUNNING , EMU_IFC_DCDCLNRUNNING , EMU_IntClear() , EMU_IntGet() , emuDcdcMode_Bypass , and emuDcdcMode_LowNoise .
Referenced by EMU_DCDCConductionModeSet() , EMU_DCDCInit() , and EMU_EnterEM4() .
void EMU_DCDCOptimizeSlice | ( | uint32_t |
em0LoadCurrentmA
|
) |
Optimize the DCDC slice count based on the estimated average load current in EM0.
- Parameters
-
[in] em0LoadCurrent_mA
Estimated average EM0 load current in mA.
Definition at line
2289
of file
em_emu.c
.
References _EMU_DCDCLNFREQCTRL_RCOBAND_MASK , _EMU_DCDCLNFREQCTRL_RCOBAND_SHIFT , _EMU_DCDCMISCCTRL_LNFORCECCM_MASK , _EMU_DCDCMISCCTRL_NFETCNT_MASK , _EMU_DCDCMISCCTRL_NFETCNT_SHIFT , _EMU_DCDCMISCCTRL_PFETCNT_MASK , _EMU_DCDCMISCCTRL_PFETCNT_SHIFT , EMU , emuDcdcLnRcoBand_4MHz , and emuDcdcLnRcoBand_5MHz .
Referenced by EMU_DCDCConductionModeSet() , EMU_DCDCInit() , and EMU_DCDCLnRcoBandSet() .
bool EMU_DCDCOutputVoltageSet | ( | uint32_t |
mV,
|
bool |
setLpVoltage,
|
||
bool |
setLnVoltage
|
||
) |
Set the DCDC output voltage.
- Parameters
-
[in] mV
Target DCDC output voltage in mV.
- Returns
- True if the mV parameter is valid.
Definition at line
2138
of file
em_emu.c
.
References _DEVINFO_DCDCLNVCTRL0_1V2LNATT0_MASK , _DEVINFO_DCDCLNVCTRL0_1V2LNATT0_SHIFT , _DEVINFO_DCDCLNVCTRL0_1V8LNATT0_MASK , _DEVINFO_DCDCLNVCTRL0_1V8LNATT0_SHIFT , _DEVINFO_DCDCLNVCTRL0_1V8LNATT1_MASK , _DEVINFO_DCDCLNVCTRL0_1V8LNATT1_SHIFT , _DEVINFO_DCDCLNVCTRL0_3V0LNATT1_MASK , _DEVINFO_DCDCLNVCTRL0_3V0LNATT1_SHIFT , _EMU_DCDCLNVCTRL_LNATT_MASK , _EMU_DCDCLNVCTRL_LNVREF_MASK , _EMU_DCDCLNVCTRL_LNVREF_SHIFT , _EMU_DCDCLPVCTRL_LPATT_MASK , _EMU_DCDCLPVCTRL_LPVREF_MASK , _EMU_DCDCLPVCTRL_LPVREF_SHIFT , DEVINFO , EMU , EMU_DCDCLNVCTRL_LNATT , EMU_DCDCLPVCTRL_LPATT , SL_MAX , and SL_MIN .
Referenced by EMU_DCDCInit() .
bool EMU_DCDCPowerOff | ( | void |
|
) |
Power off the DCDC regulator.
This function powers off the DCDC controller. This function should only be used if the external power circuit is wired for no DCDC. If the external power circuit is wired for DCDC usage, use EMU_DCDCInit() and set the DCDC in bypass mode to disable DCDC.
- Returns
- Return false if the DCDC could not be disabled.
Definition at line
2377
of file
em_emu.c
.
References EMU , EMU_DCDCCTRL_DCDCMODE_OFF , EMU_DCDCSYNC_DCDCCTRLBUSY , and EMU_PWRCFG_PWRCFG_DCDCTODVDD .
Referenced by BSP_initDcdc() .
void EMU_EM23Init | ( | const EMU_EM23Init_TypeDef * |
em23Init
|
) |
Update the EMU module with Energy Mode 2 and 3 configuration.
- Parameters
-
[in] em23Init
Energy Mode 2 and 3 configuration structure.
Definition at line
1213
of file
em_emu.c
.
References EMU_EM23Init_TypeDef::em23VregFullEn , and EMU .
Referenced by BSP_initEmu() .
void EMU_EM4Init | ( | const EMU_EM4Init_TypeDef * |
em4Init
|
) |
Update the EMU module with Energy Mode 4 configuration.
- Parameters
-
[in] em4Init
Energy Mode 4 configuration structure.
Definition at line
1239
of file
em_emu.c
.
References _EMU_EM4CTRL_EM4IORETMODE_MASK , _EMU_EM4CTRL_EM4STATE_MASK , _EMU_EM4CTRL_RETAINLFRCO_MASK , _EMU_EM4CTRL_RETAINLFXO_MASK , _EMU_EM4CTRL_RETAINULFRCO_MASK , EMU_EM4Init_TypeDef::em4State , EMU , EMU_EM4CTRL_EM4STATE_EM4H , EMU_EM4CTRL_RETAINLFRCO , EMU_EM4CTRL_RETAINLFXO , EMU_EM4CTRL_RETAINULFRCO , emuEM4Hibernate , EMU_EM4Init_TypeDef::pinRetentionMode , EMU_EM4Init_TypeDef::retainLfrco , EMU_EM4Init_TypeDef::retainLfxo , and EMU_EM4Init_TypeDef::retainUlfrco .
Referenced by UTIL_shutdown() .
void EMU_EnterEM2 | ( | bool |
restore
|
) |
Enter energy mode 2 (EM2).
When entering EM2, high-frequency clocks are disabled, i.e., HFXO, HFRCO and AUXHFRCO (for AUXHFRCO, see exception note below). When re-entering EM0, HFRCO is re-enabled and the core will be clocked by the configured HFRCO band. This ensures a quick wakeup from EM2.
However, prior to entering EM2, the core may have been using another oscillator than HFRCO. The
restore
parameter gives the user the option to restore all HF oscillators according to state prior to entering EM2, as well as the clock used to clock the core. This restore procedure is handled by SW. However, since handled by SW, it will not be restored before completing the interrupt function(s) waking up the core!
- Note
- If restoring core clock to use the HFXO oscillator, which has been disabled during EM2 mode, this function will stall until the oscillator has stabilized. Stalling time can be reduced by adding interrupt support detecting stable oscillator, and an asynchronous switch to the original oscillator. See CMU documentation. Such a feature is however outside the scope of the implementation in this function.
- If ERRATA_FIX_EMU_E110_ENABLE is active, the core's SLEEPONEXIT feature can not be used.
- If HFXO is re-enabled by this function, and NOT used to clock the core, this function will not wait for HFXO to stabilize. This must be considered by the application if trying to use features relying on that oscillator upon return.
-
If a debugger is attached, the AUXHFRCO will not be disabled if enabled upon entering EM2. It will thus remain enabled when returning to EM0 regardless of the
restore
parameter.
-
If HFXO autostart and select is enabled by using
CMU_HFXOAutostartEnable()
, the starting and selecting of the core clocks will be identical to the user independently of the value of the
restore
parameter when waking up on the wakeup sources corresponding to the autostart and select setting.
- If voltage scaling is supported, the restore parameter is true and the EM0 voltage scaling level is set higher than the EM2 level, then the EM0 level is also restored.
Note that the hardware will automatically update the HFRCO frequency in the case where voltage scaling is used in EM2/EM3 and not in EM0/EM1. When the restore argument to this function is true then software will restore the original HFRCO frequency after EM2/EM3 wake up. If the restore argument is false then the HFRCO frequency is 19 MHz when coming out of EM2/EM3 and all wait states are at a safe value.
- Parameters
-
[in] restore
- true - save and restore oscillators, clocks and voltage scaling, see function details.
- false - do not save and restore oscillators and clocks, see function details.
-
The
restore
option should only be used if all clock control is done via the CMU API.
Definition at line
545
of file
em_emu.c
.
References CORE_CRITICAL_SECTION , and SystemCoreClockUpdate() .
Referenced by CAPLESENSE_Sleep() , UTIL_sleep() , and UTIL_waitForEvent() .
void EMU_EnterEM3 | ( | bool |
restore
|
) |
Enter energy mode 3 (EM3).
When entering EM3, the high-frequency clocks are disabled by hardware, i.e., HFXO, HFRCO, and AUXHFRCO (for AUXHFRCO, see exception note below). In addition, the low-frequency clocks, i.e., LFXO and LFRCO are disabled by software. When re-entering EM0, HFRCO is re-enabled and the core will be clocked by the configured HFRCO band. This ensures a quick wakeup from EM3.
However, prior to entering EM3, the core may have been using an oscillator other than HFRCO. The
restore
parameter gives the user the option to restore all HF/LF oscillators according to state prior to entering EM3, as well as the clock used to clock the core. This restore procedure is handled by software. However, since it is handled by software, it will not be restored before completing the interrupt function(s) waking up the core!
- Note
- If restoring core clock to use an oscillator other than HFRCO, this function will stall until the oscillator has stabilized. Stalling time can be reduced by adding interrupt support detecting stable oscillator, and an asynchronous switch to the original oscillator. See CMU documentation. This feature is, however, outside the scope of the implementation in this function.
- If ERRATA_FIX_EMU_E110_ENABLE is active, the core's SLEEPONEXIT feature can't be used.
- If HFXO/LFXO/LFRCO are re-enabled by this function, and NOT used to clock the core, this function will not wait for those oscillators to stabilize. This must be considered by the application if trying to use features relying on those oscillators upon return.
-
If a debugger is attached, the AUXHFRCO will not be disabled if enabled upon entering EM3. It will, therefore, remain enabled when returning to EM0 regardless of the
restore
parameter.
- If voltage scaling is supported, the restore parameter is true and the EM0 voltage scaling level is set higher than the EM3 level, then the EM0 level is also restored.
- Parameters
-
[in] restore
- true - save and restore oscillators, clocks and voltage scaling, see function details.
- false - do not save and restore oscillators and clocks, see function details.
-
The
restore
option should only be used if all clock control is done via the CMU API.
Definition at line
670
of file
em_emu.c
.
References CMU , CMU_Lock() , CMU_LOCK_LOCKKEY_LOCKED , CMU_OSCENCMD_LFRCODIS , CMU_OSCENCMD_LFXODIS , CMU_Unlock() , CORE_CRITICAL_SECTION , and SystemCoreClockUpdate() .
void EMU_EnterEM4 | ( | void |
|
) |
Enter energy mode 4 (EM4).
- Note
- Only a power on reset or external reset pin can wake the device from EM4.
Definition at line
794
of file
em_emu.c
.
References _CMU_HFRCOCTRL_CLKDIV_MASK , _EMU_DCDCCTRL_DCDCMODE_MASK , _EMU_EM4CTRL_EM4ENTRY_MASK , _EMU_EM4CTRL_EM4ENTRY_SHIFT , _EMU_EM4CTRL_EM4STATE_MASK , _EMU_PWRCTRL_ANASW_MASK , BUS_RegMaskedClear() , CMU , CMU_HFCLKSEL_HF_HFRCO , CMU_HFRCOCTRL_CLKDIV_DIV4 , CMU_OSCENCMD_HFRCOEN , CMU_STATUS_HFRCORDY , CMU_SYNCBUSY_HFRCOBSY , DEVINFO , EMU , EMU_BASE , EMU_DCDCCTRL_DCDCMODE_LOWNOISE , EMU_DCDCCTRL_DCDCMODE_LOWPOWER , EMU_DCDCModeSet() , EMU_EM4CTRL_EM4STATE_EM4H , EMU_EM4CTRL_EM4STATE_EM4S , EMU_PWRCTRL_ANASW_DVDD , EMU_Unlock() , and emuDcdcMode_Bypass .
Referenced by EMU_EnterEM4H() , EMU_EnterEM4S() , and UTIL_shutdown() .
void EMU_EnterEM4H | ( | void |
|
) |
Enter energy mode 4 hibernate (EM4H).
- Note
- Retention of clocks and GPIO in EM4 can be configured using EMU_EM4Init before calling this function.
Definition at line
894
of file
em_emu.c
.
References _EMU_EM4CTRL_EM4STATE_SHIFT , BUS_RegBitWrite() , EMU , and EMU_EnterEM4() .
void EMU_EnterEM4S | ( | void |
|
) |
Enter energy mode 4 shutoff (EM4S).
- Note
- Retention of clocks and GPIO in EM4 can be configured using EMU_EM4Init before calling this function.
Definition at line
908
of file
em_emu.c
.
References _EMU_EM4CTRL_EM4STATE_SHIFT , BUS_RegBitWrite() , EMU , and EMU_EnterEM4() .
__STATIC_INLINE void EMU_IntClear | ( | uint32_t |
flags
|
) |
Clear one or more pending EMU interrupts.
- Parameters
-
[in] flags
Pending EMU interrupt sources to clear. Use one or more valid interrupt flags for the EMU module (EMU_IFC_nnn).
Definition at line
824
of file
em_emu.h
.
References EMU .
Referenced by disableInterrupts() , EMU_DCDCConductionModeSet() , EMU_DCDCModeSet() , and TEMPDRV_IRQHandler() .
__STATIC_INLINE void EMU_IntDisable | ( | uint32_t |
flags
|
) |
Disable one or more EMU interrupts.
- Parameters
-
[in] flags
EMU interrupt sources to disable. Use one or more valid interrupt flags for the EMU module (EMU_IEN_nnn).
Definition at line
837
of file
em_emu.h
.
References EMU .
Referenced by disableInterrupts() , and updateInterrupts() .
__STATIC_INLINE void EMU_IntEnable | ( | uint32_t |
flags
|
) |
Enable one or more EMU interrupts.
- Note
- Depending on the use, a pending interrupt may already be set prior to enabling the interrupt. To ignore a pending interrupt, consider using EMU_IntClear() prior to enabling the interrupt.
- Parameters
-
[in] flags
EMU interrupt sources to enable. Use one or more valid interrupt flags for the EMU module (EMU_IEN_nnn).
Definition at line
855
of file
em_emu.h
.
References EMU .
Referenced by updateInterrupts() .
__STATIC_INLINE uint32_t EMU_IntGet | ( | void |
|
) |
Get pending EMU interrupt flags.
- Note
- Event bits are not cleared by the use of this function.
- Returns
- EMU interrupt sources pending. Returns one or more valid interrupt flags for the EMU module (EMU_IF_nnn).
Definition at line
871
of file
em_emu.h
.
References EMU .
Referenced by EMU_DCDCConductionModeSet() , and EMU_DCDCModeSet() .
__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.
- Note
- Interrupt flags are not cleared by the use of this function.
- Returns
-
Pending and enabled EMU interrupt sources Return value is the bitwise AND of
- the enabled interrupt sources in EMU_IEN and
- the pending interrupt flags EMU_IF.
Definition at line
890
of file
em_emu.h
.
References EMU .
Referenced by TEMPDRV_IRQHandler() .
__STATIC_INLINE void EMU_IntSet | ( | uint32_t |
flags
|
) |
Set one or more pending EMU interrupts.
- Parameters
-
[in] flags
EMU interrupt sources to set to pending. Use one or more valid interrupt flags for the EMU module (EMU_IFS_nnn).
Definition at line
906
of file
em_emu.h
.
References EMU .
__STATIC_INLINE void EMU_Lock | ( | void |
|
) |
Lock EMU registers in order to protect them against unintended modification.
- Note
- If locking EMU registers, they must be unlocked prior to using any EMU API functions modifying EMU registers, excluding interrupt control and regulator control if the architecture has a EMU_PWRCTRL register. An exception to this is the energy mode entering API (EMU_EnterEMn()), which can be used when the EMU registers are locked.
Definition at line
962
of file
em_emu.h
.
References EMU , and EMU_LOCK_LOCKKEY_LOCK .
Referenced by RMU_ResetCauseClear() .
void EMU_MemPwrDown | ( | uint32_t |
blocks
|
) |
Power down memory block.
- Parameters
-
[in] blocks
Specifies a logical OR of bits indicating memory blocks to power down. Bit 0 selects block 1, bit 1 selects block 2, and so on. Memory block 0 cannot be disabled. See the reference manual for available memory blocks for a device.
- Note
- Only a POR reset can power up the specified memory block(s) after power down.
- Deprecated:
- This function is deprecated, use EMU_RamPowerDown() instead which maps a user provided memory range into RAM blocks to power down.
Definition at line
932
of file
em_emu.c
.
References _EMU_RAM0CTRL_MASK , and EMU .
void EMU_RamPowerDown | ( | uint32_t |
start,
|
uint32_t |
end
|
||
) |
Power down RAM memory blocks.
This function will power down all the RAM blocks that are within a given range. The RAM block layout is different between device families, so this function can be used in a generic way to power down a RAM memory region which is known to be unused.
This function will only power down blocks which are completely enclosed by the memory range given by [start, end).
This is an example to power down all RAM blocks except the first one. The first RAM block is special in that it cannot be powered down by the hardware. The size of the first RAM block is device-specific. See the reference manual to find the RAM block sizes.
- Note
- Only a reset can power up the specified memory block(s) after power down on a series 0 device.
- Parameters
-
[in] start
The start address of the RAM region to power down. This address is inclusive. [in] end
The end address of the RAM region to power down. This address is exclusive. If this parameter is 0, all RAM blocks contained in the region from start to the upper RAM address will be powered down.
Definition at line
978
of file
em_emu.c
.
References EMU , RAM_MEM_BASE , SRAM_BASE , and SRAM_SIZE .
void EMU_RamPowerUp | ( | void |
|
) |
Power up all available RAM memory blocks.
This function will power up all the RAM blocks on a device, this means that the RAM blocks are retained in EM2/EM3. Note that this functionality is not supported on Series 0 devices. Only a reset will power up the RAM blocks on a series 0 device.
Definition at line
1050
of file
em_emu.c
.
References EMU .
void EMU_SetBiasMode | ( | EMU_BiasMode_TypeDef |
mode
|
) |
Adjust the bias refresh rate.
This function is only meant to be used under high-temperature operation on EFR32xG1 and EFM32xG1 devices. Adjusting the bias mode will increase the typical current consumption. See application note 1027 and errata documents for more details.
- Parameters
-
[in] mode
The new bias refresh rate.
Definition at line
2778
of file
em_emu.c
.
Referenced by errataStateUpdate() .
void EMU_UpdateOscConfig | ( | void |
|
) |
Update EMU module with CMU oscillator selection/enable status.
- Deprecated:
- Oscillator status is saved in EMU_EnterEM2() and EMU_EnterEM3() .
Definition at line
1094
of file
em_emu.c
.
bool EMU_VmonChannelStatusGet | ( | EMU_VmonChannel_TypeDef |
channel
|
) |
Get the status of a voltage monitor channel.
- Parameters
-
[in] channel
A VMON channel to get the status for.
- Returns
- A status of the selected VMON channel. True if the channel is triggered.
Definition at line
2728
of file
em_emu.c
.
References _EMU_STATUS_VMONALTAVDD_SHIFT , _EMU_STATUS_VMONAVDD_SHIFT , _EMU_STATUS_VMONDVDD_SHIFT , _EMU_STATUS_VMONIO0_SHIFT , BUS_RegBitRead() , and EMU .
void EMU_VmonEnable | ( | EMU_VmonChannel_TypeDef |
channel,
|
bool |
enable
|
||
) |
Enable or disable a VMON channel.
- Parameters
-
[in] channel
A VMON channel to enable/disable. [in] enable
Indicates whether to enable or disable.
Definition at line
2676
of file
em_emu.c
.
References _EMU_VMONALTAVDDCTRL_EN_SHIFT , _EMU_VMONAVDDCTRL_EN_SHIFT , _EMU_VMONDVDDCTRL_EN_SHIFT , _EMU_VMONIO0CTRL_EN_SHIFT , BUS_RegBitWrite() , and EMU .
void EMU_VmonHystInit | ( | const EMU_VmonHystInit_TypeDef * |
vmonInit
|
) |
Initialize a VMON channel with hysteresis (separate rise and fall triggers).
Initialize a VMON channel which supports hysteresis. The AVDD channel is the only channel to support separate rise and fall triggers. The rise and fall thresholds will be converted to a register field value based on the calibration values from the DI page.
- Parameters
-
[in] vmonInit
The VMON hysteresis initialization structure.
Definition at line
2636
of file
em_emu.c
.
References _EMU_VMONAVDDCTRL_FALLTHRESCOARSE_SHIFT , _EMU_VMONAVDDCTRL_FALLTHRESFINE_SHIFT , _EMU_VMONAVDDCTRL_RISETHRESCOARSE_SHIFT , _EMU_VMONAVDDCTRL_RISETHRESFINE_SHIFT , EMU_VmonHystInit_TypeDef::channel , EMU , EMU_VMONAVDDCTRL_EN , EMU_VMONAVDDCTRL_FALLWU , EMU_VMONAVDDCTRL_RISEWU , EMU_VmonHystInit_TypeDef::enable , EMU_VmonHystInit_TypeDef::fallThreshold , EMU_VmonHystInit_TypeDef::fallWakeup , EMU_VmonHystInit_TypeDef::riseThreshold , and EMU_VmonHystInit_TypeDef::riseWakeup .
void EMU_VmonInit | ( | const EMU_VmonInit_TypeDef * |
vmonInit
|
) |
Initialize a VMON channel.
Initialize a VMON channel without hysteresis. If the channel supports separate rise and fall triggers, both thresholds will be set to the same value. The threshold will be converted to a register field value based on calibration values from the DI page.
- Parameters
-
[in] vmonInit
The VMON initialization structure.
Definition at line
2549
of file
em_emu.c
.
References _EMU_VMONALTAVDDCTRL_THRESCOARSE_SHIFT , _EMU_VMONALTAVDDCTRL_THRESFINE_SHIFT , _EMU_VMONAVDDCTRL_FALLTHRESCOARSE_SHIFT , _EMU_VMONAVDDCTRL_FALLTHRESFINE_SHIFT , _EMU_VMONAVDDCTRL_RISETHRESCOARSE_SHIFT , _EMU_VMONAVDDCTRL_RISETHRESFINE_SHIFT , _EMU_VMONDVDDCTRL_THRESCOARSE_SHIFT , _EMU_VMONDVDDCTRL_THRESFINE_SHIFT , _EMU_VMONIO0CTRL_THRESCOARSE_SHIFT , _EMU_VMONIO0CTRL_THRESFINE_SHIFT , EMU_VmonInit_TypeDef::channel , EMU , EMU_VMONALTAVDDCTRL_EN , EMU_VMONALTAVDDCTRL_FALLWU , EMU_VMONALTAVDDCTRL_RISEWU , EMU_VMONAVDDCTRL_EN , EMU_VMONAVDDCTRL_FALLWU , EMU_VMONAVDDCTRL_RISEWU , EMU_VMONDVDDCTRL_EN , EMU_VMONDVDDCTRL_FALLWU , EMU_VMONDVDDCTRL_RISEWU , EMU_VMONIO0CTRL_EN , EMU_VMONIO0CTRL_FALLWU , EMU_VMONIO0CTRL_RETDIS , EMU_VMONIO0CTRL_RISEWU , EMU_VmonInit_TypeDef::enable , EMU_VmonInit_TypeDef::fallWakeup , EMU_VmonInit_TypeDef::retDisable , EMU_VmonInit_TypeDef::riseWakeup , and EMU_VmonInit_TypeDef::threshold .
__STATIC_INLINE bool EMU_VmonStatusGet | ( | void |
|
) |
Get the status of the voltage monitor (VMON).
- Returns
- Status of the VMON. True if all the enabled channels are ready, false if one or more of the enabled channels are not ready.
Definition at line
809
of file
em_emu.h
.
References _EMU_STATUS_VMONRDY_SHIFT , BUS_RegBitRead() , and EMU .