EFR32 Mighty Gecko 1 Software Documentation  efr32mg1-doc-5.1.2
em_cmu.c File Reference

Detailed Description

Clock management unit (CMU) Peripheral API.

Version
5.1.2

License

Copyright 2016 Silicon Laboratories, Inc. http://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:

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  2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

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Definition in file em_cmu.c.

#include "em_cmu.h"
#include <stddef.h>
#include <limits.h>
#include "em_assert.h"
#include "em_bus.h"
#include "em_emu.h"
#include "em_system.h"
#include "em_common.h"

Go to the source code of this file.

Functions

CMU_AUXHFRCOFreq_TypeDef CMU_AUXHFRCOBandGet (void)
 Get current AUXHFRCO frequency. More...
 
void CMU_AUXHFRCOBandSet (CMU_AUXHFRCOFreq_TypeDef setFreq)
 Set AUXHFRCO calibration for the selected target frequency. More...
 
static uint32_t CMU_AUXHFRCODevinfoGet (CMU_AUXHFRCOFreq_TypeDef freq)
 Get a pointer to the AUXHFRCO frequency calibration word in DEVINFO. More...
 
uint32_t CMU_Calibrate (uint32_t HFCycles, CMU_Osc_TypeDef ref)
 Calibrate clock. More...
 
void CMU_CalibrateConfig (uint32_t downCycles, CMU_Osc_TypeDef downSel, CMU_Osc_TypeDef upSel)
 Configure clock calibration. More...
 
uint32_t CMU_CalibrateCountGet (void)
 Get calibration count register. More...
 
CMU_ClkDiv_TypeDef CMU_ClockDivGet (CMU_Clock_TypeDef clock)
 Get clock divisor/prescaler. More...
 
void CMU_ClockDivSet (CMU_Clock_TypeDef clock, CMU_ClkDiv_TypeDef div)
 Set clock divisor/prescaler. More...
 
void CMU_ClockEnable (CMU_Clock_TypeDef clock, bool enable)
 Enable/disable a clock. More...
 
uint32_t CMU_ClockFreqGet (CMU_Clock_TypeDef clock)
 Get clock frequency for a clock point. More...
 
uint32_t CMU_ClockPrescGet (CMU_Clock_TypeDef clock)
 Get clock prescaler. More...
 
void CMU_ClockPrescSet (CMU_Clock_TypeDef clock, CMU_ClkPresc_TypeDef presc)
 Set clock prescaler. More...
 
CMU_Select_TypeDef CMU_ClockSelectGet (CMU_Clock_TypeDef clock)
 Get currently selected reference clock used for a clock branch. More...
 
void CMU_ClockSelectSet (CMU_Clock_TypeDef clock, CMU_Select_TypeDef ref)
 Select reference clock/oscillator used for a clock branch. More...
 
void CMU_FreezeEnable (bool enable)
 CMU low frequency register synchronization freeze control. More...
 
CMU_HFRCOFreq_TypeDef CMU_HFRCOBandGet (void)
 Get current HFRCO frequency. More...
 
void CMU_HFRCOBandSet (CMU_HFRCOFreq_TypeDef setFreq)
 Set HFRCO calibration for the selected target frequency. More...
 
static uint32_t CMU_HFRCODevinfoGet (CMU_HFRCOFreq_TypeDef freq)
 Get a pointer to the HFRCO frequency calibration word in DEVINFO. More...
 
void CMU_HFXOAutostartEnable (uint32_t userSel, bool enEM0EM1Start, bool enEM0EM1StartSel)
 Enable or disable HFXO autostart. More...
 
void CMU_HFXOInit (const CMU_HFXOInit_TypeDef *hfxoInit)
 Set HFXO control registers. More...
 
uint32_t CMU_LCDClkFDIVGet (void)
 Get the LCD framerate divisor (FDIV) setting. More...
 
void CMU_LCDClkFDIVSet (uint32_t div)
 Set the LCD framerate divisor (FDIV) setting. More...
 
void CMU_LFXOInit (const CMU_LFXOInit_TypeDef *lfxoInit)
 Set LFXO control registers. More...
 
void CMU_OscillatorEnable (CMU_Osc_TypeDef osc, bool enable, bool wait)
 Enable/disable oscillator. More...
 
uint32_t CMU_OscillatorTuningGet (CMU_Osc_TypeDef osc)
 Get oscillator frequency tuning setting. More...
 
bool CMU_OscillatorTuningOptimize (CMU_Osc_TypeDef osc, CMU_HFXOTuningMode_TypeDef mode, bool wait)
 Start and optionally wait for oscillator tuning optimization. More...
 
void CMU_OscillatorTuningSet (CMU_Osc_TypeDef osc, uint32_t val)
 Set the oscillator frequency tuning control. More...
 
bool CMU_OscillatorTuningWait (CMU_Osc_TypeDef osc, CMU_HFXOTuningMode_TypeDef mode)
 Wait for oscillator tuning optimization. More...
 
bool CMU_PCNTClockExternalGet (unsigned int instance)
 Determine if currently selected PCNTn clock used is external or LFBCLK. More...
 
void CMU_PCNTClockExternalSet (unsigned int instance, bool external)
 Select PCNTn clock. More...