em_cmu.h File Reference
Clock management unit (CMU) API.
- Version
- 5.5.0
License
Copyright 2018 Silicon Laboratories, Inc. www.silabs.com
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_cmu.h
.
#include "em_device.h
"
#include <stdbool.h>
#include "em_assert.h
"
#include "em_bus.h
"
Data Structures | |
struct | CMU_DPLLInit_TypeDef |
struct | CMU_HFXOInit_TypeDef |
struct | CMU_LFXOInit_TypeDef |
Macros | |
#define | CMU_AUXHFRCO_MAX cmuAUXHFRCOFreq_48M0Hz |
#define | CMU_AUXHFRCO_MIN cmuAUXHFRCOFreq_1M0Hz |
#define | CMU_DPLL_LFXO_TO_40MHZ |
#define | CMU_HFRCO_MAX cmuHFRCOFreq_48M0Hz |
#define | CMU_HFRCO_MIN cmuHFRCOFreq_1M0Hz |
#define | CMU_HFXOINIT_DEFAULT |
#define | CMU_HFXOINIT_EXTERNAL_CLOCK |
#define | CMU_LFXOINIT_DEFAULT |
#define | CMU_LFXOINIT_EXTERNAL_CLOCK |
#define | cmuClkDiv_1 1 |
#define | cmuClkDiv_1024 1024 |
#define | cmuClkDiv_128 128 |
#define | cmuClkDiv_16 16 |
#define | cmuClkDiv_16384 16384 |
#define | cmuClkDiv_2 2 |
#define | cmuClkDiv_2048 2048 |
#define | cmuClkDiv_256 256 |
#define | cmuClkDiv_32 32 |
#define | cmuClkDiv_32768 32768 |
#define | cmuClkDiv_4 4 |
#define | cmuClkDiv_4096 4096 |
#define | cmuClkDiv_512 512 |
#define | cmuClkDiv_64 64 |
#define | cmuClkDiv_8 8 |
#define | cmuClkDiv_8192 8192 |
Typedefs | |
typedef uint32_t | CMU_ClkDiv_TypeDef |
typedef uint32_t | CMU_ClkPresc_TypeDef |
Functions | |
CMU_AUXHFRCOFreq_TypeDef | CMU_AUXHFRCOBandGet (void) |
Get the current AUXHFRCO frequency. | |
void | CMU_AUXHFRCOBandSet (CMU_AUXHFRCOFreq_TypeDef setFreq) |
Set AUXHFRCO calibration for the selected target frequency. | |
__STATIC_INLINE CMU_AUXHFRCOFreq_TypeDef | CMU_AUXHFRCOFreqGet (void) |
Get the current AUXHFRCO frequency. | |
__STATIC_INLINE void | CMU_AUXHFRCOFreqSet (CMU_AUXHFRCOFreq_TypeDef setFreq) |
Set AUXHFRCO calibration for the selected target frequency. | |
uint32_t | CMU_Calibrate (uint32_t HFCycles, CMU_Osc_TypeDef reference) |
Calibrate the clock. | |
void | CMU_CalibrateConfig (uint32_t downCycles, CMU_Osc_TypeDef downSel, CMU_Osc_TypeDef upSel) |
Configure the clock calibration. | |
__STATIC_INLINE void | CMU_CalibrateCont (bool enable) |
Configure continuous calibration mode. | |
uint32_t | CMU_CalibrateCountGet (void) |
Get the calibration count register. | |
__STATIC_INLINE void | CMU_CalibrateStart (void) |
Start calibration. | |
__STATIC_INLINE void | CMU_CalibrateStop (void) |
Stop the calibration counters. | |
CMU_ClkDiv_TypeDef | CMU_ClockDivGet (CMU_Clock_TypeDef clock) |
Get the clock divisor/prescaler. | |
void | CMU_ClockDivSet (CMU_Clock_TypeDef clock, CMU_ClkDiv_TypeDef div) |
Set the clock divisor/prescaler. | |
void | CMU_ClockEnable (CMU_Clock_TypeDef clock, bool enable) |
Enable/disable a clock. | |
uint32_t | CMU_ClockFreqGet (CMU_Clock_TypeDef clock) |
Get the clock frequency for a clock point. | |
uint32_t | CMU_ClockPrescGet (CMU_Clock_TypeDef clock) |
Get the clock prescaler. | |
void | CMU_ClockPrescSet (CMU_Clock_TypeDef clock, CMU_ClkPresc_TypeDef presc) |
Set the clock prescaler. | |
CMU_Select_TypeDef | CMU_ClockSelectGet (CMU_Clock_TypeDef clock) |
Get the currently selected reference clock used for a clock branch. | |
void | CMU_ClockSelectSet (CMU_Clock_TypeDef clock, CMU_Select_TypeDef ref) |
Select the reference clock/oscillator used for a clock branch. | |
__STATIC_INLINE uint32_t | CMU_DivToLog2 (CMU_ClkDiv_TypeDef div) |
Convert dividend to logarithmic value. It only works for even numbers equal to 2^n. | |
bool | CMU_DPLLLock (CMU_DPLLInit_TypeDef *init) |
Lock the DPLL to a given frequency. | |
__STATIC_INLINE void | CMU_DPLLUnlock (void) |
Unlock DPLL. | |
void | CMU_FreezeEnable (bool enable) |
CMU low frequency register synchronization freeze control. | |
CMU_HFRCOFreq_TypeDef | CMU_HFRCOBandGet (void) |
Get the current HFRCO frequency. | |
void | CMU_HFRCOBandSet (CMU_HFRCOFreq_TypeDef setFreq) |
Set the HFRCO calibration for the selected target frequency. | |
__STATIC_INLINE CMU_HFRCOFreq_TypeDef | CMU_HFRCOFreqGet (void) |
Get the current HFRCO frequency. | |
__STATIC_INLINE void | CMU_HFRCOFreqSet (CMU_HFRCOFreq_TypeDef setFreq) |
Set HFRCO calibration for the selected target frequency. | |
void | CMU_HFXOAutostartEnable (uint32_t userSel, bool enEM0EM1Start, bool enEM0EM1StartSel) |
Enable or disable HFXO autostart. | |
void | CMU_HFXOInit (const CMU_HFXOInit_TypeDef *hfxoInit) |
Set HFXO control registers. | |
__STATIC_INLINE void | CMU_IntClear (uint32_t flags) |
Clear one or more pending CMU interrupts. | |
__STATIC_INLINE void | CMU_IntDisable (uint32_t flags) |
Disable one or more CMU interrupts. | |
__STATIC_INLINE void | CMU_IntEnable (uint32_t flags) |
Enable one or more CMU interrupts. | |
__STATIC_INLINE uint32_t | CMU_IntGet (void) |
Get pending CMU interrupts. | |
__STATIC_INLINE uint32_t | CMU_IntGetEnabled (void) |
Get enabled and pending CMU interrupt flags. | |
__STATIC_INLINE void | CMU_IntSet (uint32_t flags) |
Set one or more pending CMU interrupts. | |
uint32_t | CMU_LCDClkFDIVGet (void) |
Get the LCD framerate divisor (FDIV) setting. | |
void | CMU_LCDClkFDIVSet (uint32_t div) |
Set the LCD framerate divisor (FDIV) setting. | |
void | CMU_LFXOInit (const CMU_LFXOInit_TypeDef *lfxoInit) |
Set LFXO control registers. | |
__STATIC_INLINE void | CMU_Lock (void) |
Lock the CMU to protect some of its registers against unintended modification. | |
__STATIC_INLINE uint32_t | CMU_Log2ToDiv (uint32_t log2) |
Convert logarithm of 2 prescaler to division factor. | |
void | CMU_OscillatorEnable (CMU_Osc_TypeDef osc, bool enable, bool wait) |
Enable/disable oscillator. | |
uint32_t | CMU_OscillatorTuningGet (CMU_Osc_TypeDef osc) |
Get the oscillator frequency tuning setting. | |
bool | CMU_OscillatorTuningOptimize (CMU_Osc_TypeDef osc, CMU_HFXOTuningMode_TypeDef mode, bool wait) |
Start and optionally wait for the oscillator tuning optimization. | |
void | CMU_OscillatorTuningSet (CMU_Osc_TypeDef osc, uint32_t val) |
Set the oscillator frequency tuning control. | |
bool | CMU_OscillatorTuningWait (CMU_Osc_TypeDef osc, CMU_HFXOTuningMode_TypeDef mode) |
Wait for the oscillator tuning optimization. | |
bool | CMU_PCNTClockExternalGet (unsigned int instance) |
Determine if the currently selected PCNTn clock used is external or LFBCLK. | |
void | CMU_PCNTClockExternalSet (unsigned int instance, bool external) |
Select the PCNTn clock. | |
__STATIC_INLINE uint32_t | CMU_PrescToLog2 (CMU_ClkPresc_TypeDef presc) |
Convert prescaler dividend to a logarithmic value. It only works for even numbers equal to 2^n. | |
__STATIC_INLINE void | CMU_Unlock (void) |
Unlock the CMU so that writing to locked registers again is possible. | |
void | CMU_UpdateWaitStates (uint32_t freq, int vscale) |