EFM32 Wonder Gecko Software Documentation
efm32wg-doc-4.2.1
|
Clock management unit (CMU) Peripheral API
. More...
Macros | |
#define | cmuClkDiv_1 1 |
#define | cmuClkDiv_2 2 |
#define | cmuClkDiv_4 4 |
#define | cmuClkDiv_8 8 |
#define | cmuClkDiv_16 16 |
#define | cmuClkDiv_32 32 |
#define | cmuClkDiv_64 64 |
#define | cmuClkDiv_128 128 |
#define | cmuClkDiv_256 256 |
#define | cmuClkDiv_512 512 |
#define | cmuClkDiv_1024 1024 |
#define | cmuClkDiv_2048 2048 |
#define | cmuClkDiv_4096 4096 |
#define | cmuClkDiv_8192 8192 |
#define | cmuClkDiv_16384 16384 |
#define | cmuClkDiv_32768 32768 |
Typedefs | |
typedef uint32_t | CMU_ClkDiv_TypeDef |
Functions | |
CMU_AUXHFRCOBand_TypeDef | CMU_AUXHFRCOBandGet (void) |
Get AUXHFRCO band in use. More... | |
void | CMU_AUXHFRCOBandSet (CMU_AUXHFRCOBand_TypeDef band) |
Set AUXHFRCO band and the tuning value based on the value in the calibration table made during production. 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... | |
void | CMU_ClockEnable (CMU_Clock_TypeDef clock, bool enable) |
Enable/disable a clock. 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... | |
uint32_t | CMU_ClockFreqGet (CMU_Clock_TypeDef clock) |
Get clock frequency for a clock point. More... | |
void | CMU_ClockSelectSet (CMU_Clock_TypeDef clock, CMU_Select_TypeDef ref) |
Select reference clock/oscillator used for a clock branch. More... | |
CMU_Select_TypeDef | CMU_ClockSelectGet (CMU_Clock_TypeDef clock) |
Get currently selected reference clock used for a clock branch. More... | |
void | CMU_FreezeEnable (bool enable) |
CMU low frequency register synchronization freeze control. More... | |
CMU_HFRCOBand_TypeDef | CMU_HFRCOBandGet (void) |
Get HFRCO band in use. More... | |
void | CMU_HFRCOBandSet (CMU_HFRCOBand_TypeDef band) |
Set HFRCO band and the tuning value based on the value in the calibration table made during production. More... | |
uint32_t | CMU_HFRCOStartupDelayGet (void) |
Get the HFRCO startup delay. More... | |
void | CMU_HFRCOStartupDelaySet (uint32_t delay) |
Set the HFRCO startup delay. 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_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... | |
void | CMU_OscillatorTuningSet (CMU_Osc_TypeDef osc, uint32_t val) |
Set the oscillator frequency tuning control. 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... | |
__STATIC_INLINE void | CMU_CalibrateCont (bool enable) |
Configures continuous calibration mode. More... | |
__STATIC_INLINE void | CMU_CalibrateStart (void) |
Starts calibration. More... | |
__STATIC_INLINE void | CMU_CalibrateStop (void) |
Stop the calibration counters. | |
__STATIC_INLINE uint32_t | CMU_DivToLog2 (CMU_ClkDiv_TypeDef div) |
Convert dividend to logarithmic value. Only works for even numbers equal to 2^n. More... | |
__STATIC_INLINE void | CMU_IntClear (uint32_t flags) |
Clear one or more pending CMU interrupts. More... | |
__STATIC_INLINE void | CMU_IntDisable (uint32_t flags) |
Disable one or more CMU interrupts. More... | |
__STATIC_INLINE void | CMU_IntEnable (uint32_t flags) |
Enable one or more CMU interrupts. More... | |
__STATIC_INLINE uint32_t | CMU_IntGet (void) |
Get pending CMU interrupts. More... | |
__STATIC_INLINE uint32_t | CMU_IntGetEnabled (void) |
Get enabled and pending CMU interrupt flags. More... | |
__STATIC_INLINE void | CMU_IntSet (uint32_t flags) |
Set one or more pending CMU interrupts. More... | |
__STATIC_INLINE void | CMU_Lock (void) |
Lock the CMU in order to protect some of its registers against unintended modification. More... | |
__STATIC_INLINE uint32_t | CMU_Log2ToDiv (uint32_t log2) |
Convert logarithm of 2 prescaler to division factor. More... | |
__STATIC_INLINE void | CMU_Unlock (void) |
Unlock the CMU so that writing to locked registers again is possible. | |
#define cmuClkDiv_1 1 |
Clock divisors. These values are valid for prescalers. Divide clock by 1.
Definition at line 148 of file em_cmu.h.
Referenced by CAPLESENSE_setupCMU(), CMU_ClockDivGet(), CMU_ClockDivSet(), and RETARGET_SerialInit().
#define cmuClkDiv_8 8 |
#define cmuClkDiv_16 16 |
Divide clock by 16.
Definition at line 152 of file em_cmu.h.
Referenced by CMU_ClockDivGet(), CMU_ClockDivSet(), and CMU_ClockFreqGet().
#define cmuClkDiv_128 128 |
Divide clock by 128.
Definition at line 155 of file em_cmu.h.
Referenced by CMU_ClockDivSet(), and CMU_LCDClkFDIVSet().
#define cmuClkDiv_256 256 |
#define cmuClkDiv_512 512 |
#define cmuClkDiv_32768 32768 |
typedef uint32_t CMU_ClkDiv_TypeDef |
enum CMU_Clock_TypeDef |
Clock points in CMU. Please refer to CMU overview in reference manual.
enum CMU_Osc_TypeDef |
Oscillator types.
enum CMU_Select_TypeDef |
Selectable clock sources.
CMU_AUXHFRCOBand_TypeDef CMU_AUXHFRCOBandGet | ( | void | ) |
Definition at line 595 of file em_cmu.c.
References _CMU_AUXHFRCOCTRL_BAND_MASK, _CMU_AUXHFRCOCTRL_BAND_SHIFT, and CMU.
void CMU_AUXHFRCOBandSet | ( | CMU_AUXHFRCOBand_TypeDef | band | ) |
[in] | band | AUXHFRCO band to activate. |
Definition at line 613 of file em_cmu.c.
References _CMU_AUXHFRCOCTRL_BAND_MASK, _CMU_AUXHFRCOCTRL_BAND_SHIFT, _CMU_AUXHFRCOCTRL_TUNING_MASK, _CMU_AUXHFRCOCTRL_TUNING_SHIFT, _DEVINFO_AUXHFRCOCAL0_BAND11_MASK, _DEVINFO_AUXHFRCOCAL0_BAND11_SHIFT, _DEVINFO_AUXHFRCOCAL0_BAND14_MASK, _DEVINFO_AUXHFRCOCAL0_BAND14_SHIFT, _DEVINFO_AUXHFRCOCAL0_BAND1_MASK, _DEVINFO_AUXHFRCOCAL0_BAND1_SHIFT, _DEVINFO_AUXHFRCOCAL0_BAND7_MASK, _DEVINFO_AUXHFRCOCAL0_BAND7_SHIFT, _DEVINFO_AUXHFRCOCAL1_BAND21_MASK, _DEVINFO_AUXHFRCOCAL1_BAND21_SHIFT, _DEVINFO_AUXHFRCOCAL1_BAND28_MASK, _DEVINFO_AUXHFRCOCAL1_BAND28_SHIFT, CMU, cmuAUXHFRCOBand_11MHz, cmuAUXHFRCOBand_14MHz, cmuAUXHFRCOBand_1MHz, cmuAUXHFRCOBand_21MHz, cmuAUXHFRCOBand_28MHz, cmuAUXHFRCOBand_7MHz, and DEVINFO.
uint32_t CMU_Calibrate | ( | uint32_t | HFCycles, |
CMU_Osc_TypeDef | ref | ||
) |
Run a calibration for HFCLK against a selectable reference clock. Please refer to the reference manual, CMU chapter, for further details.
[in] | HFCycles | The number of HFCLK cycles to run calibration. Increasing this number increases precision, but the calibration will take more time. |
[in] | ref | The reference clock used to compare HFCLK with. |
Definition at line 801 of file em_cmu.c.
References _CMU_CALCNT_CALCNT_MASK, _CMU_CALCNT_CALCNT_SHIFT, _CMU_STATUS_CALBSY_SHIFT, BUS_RegBitRead(), CMU, CMU_CALCTRL_UPSEL_AUXHFRCO, CMU_CALCTRL_UPSEL_HFRCO, CMU_CALCTRL_UPSEL_HFXO, CMU_CALCTRL_UPSEL_LFRCO, CMU_CALCTRL_UPSEL_LFXO, CMU_CMD_CALSTART, cmuOsc_AUXHFRCO, cmuOsc_HFRCO, cmuOsc_HFXO, cmuOsc_LFRCO, and cmuOsc_LFXO.
void CMU_CalibrateConfig | ( | uint32_t | downCycles, |
CMU_Osc_TypeDef | downSel, | ||
CMU_Osc_TypeDef | upSel | ||
) |
Configure a calibration for a selectable clock source against another selectable reference clock. Refer to the reference manual, CMU chapter, for further details.
[in] | downCycles | The number of downSel clock cycles to run calibration. Increasing this number increases precision, but the calibration will take more time. |
[in] | downSel | The clock which will be counted down downCycles |
[in] | upSel | The reference clock, the number of cycles generated by this clock will be counted and added up, the result can be given with the CMU_CalibrateCountGet() function call. |
Definition at line 882 of file em_cmu.c.
References _CMU_CALCNT_CALCNT_MASK, _CMU_CALCNT_CALCNT_SHIFT, _CMU_CALCTRL_DOWNSEL_MASK, _CMU_CALCTRL_UPSEL_MASK, CMU, CMU_CALCTRL_DOWNSEL_AUXHFRCO, CMU_CALCTRL_DOWNSEL_HFRCO, CMU_CALCTRL_DOWNSEL_HFXO, CMU_CALCTRL_DOWNSEL_LFRCO, CMU_CALCTRL_DOWNSEL_LFXO, CMU_CALCTRL_UPSEL_AUXHFRCO, CMU_CALCTRL_UPSEL_HFRCO, CMU_CALCTRL_UPSEL_HFXO, CMU_CALCTRL_UPSEL_LFRCO, CMU_CALCTRL_UPSEL_LFXO, cmuOsc_AUXHFRCO, cmuOsc_HFRCO, cmuOsc_HFXO, cmuOsc_LFRCO, and cmuOsc_LFXO.
uint32_t CMU_CalibrateCountGet | ( | void | ) |
Definition at line 969 of file em_cmu.c.
References _CMU_CALCTRL_CONT_SHIFT, _CMU_STATUS_CALBSY_SHIFT, BUS_RegBitRead(), and CMU.
void CMU_ClockEnable | ( | CMU_Clock_TypeDef | clock, |
bool | enable | ||
) |
In general, module clocking is disabled after a reset. If a module clock is disabled, the registers of that module are not accessible and reading from such registers may return undefined values. Writing to registers of clock disabled modules have no effect. One should normally avoid accessing module registers of a module with a disabled clock.
[in] | clock | The clock to enable/disable. Notice that not all defined clock points have separate enable/disable control, please refer to CMU overview in reference manual. |
[in] | enable |
|
Definition at line 1369 of file em_cmu.c.
References _CMU_CTRL_HFLE_SHIFT, _CMU_HFCORECLKDIV_HFCORECLKLEDIV_SHIFT, BUS_RegBitWrite(), CMU, CMU_ClockFreqGet(), CMU_SYNCBUSY_LFACLKEN0, CMU_SYNCBUSY_LFBCLKEN0, and cmuClock_CORE.
Referenced by BSP_BccDeInit(), BSP_BccInit(), BSP_EbiInit(), BSP_McuBoard_Init(), CAPLESENSE_setupCMU(), CAPSENSE_Init(), DMA_Init(), DMADRV_DeInit(), ezradio_hal_GpioInit(), I2CSPM_Init(), MICROSD_Init(), MICROSD_PowerOff(), MICROSD_PowerOn(), MSDD_Init(), RETARGET_SerialInit(), RTCDRV_DeInit(), RTCDRV_Init(), SegmentLCD_Disable(), SegmentLCD_Init(), SPI_TFT_Init(), SPIDRV_DeInit(), SPIDRV_Init(), TOUCH_Init(), UARTDRV_DeInit(), UARTDRV_Init(), UDELAY_Calibrate(), USBD_Init(), USBTIMER_Init(), USTIMER_DeInit(), USTIMER_Init(), VDDCHECK_Disable(), and VDDCHECK_Init().
CMU_ClkDiv_TypeDef CMU_ClockDivGet | ( | CMU_Clock_TypeDef | clock | ) |
[in] | clock | Clock point to get divisor/prescaler for. Notice that not all clock points have a divisor/prescaler. Please refer to CMU overview in reference manual. |
clock
specifies a clock point without a divisor/prescaler. Definition at line 1009 of file em_cmu.c.
References _CMU_CTRL_HFCLKDIV_MASK, _CMU_CTRL_HFCLKDIV_SHIFT, _CMU_HFCORECLKDIV_HFCORECLKDIV_MASK, _CMU_HFCORECLKDIV_HFCORECLKDIV_SHIFT, _CMU_HFPERCLKDIV_HFPERCLKDIV_MASK, _CMU_HFPERCLKDIV_HFPERCLKDIV_SHIFT, _CMU_LFAPRESC0_LCD_MASK, _CMU_LFAPRESC0_LCD_SHIFT, _CMU_LFAPRESC0_LESENSE_MASK, _CMU_LFAPRESC0_LESENSE_SHIFT, _CMU_LFAPRESC0_LETIMER0_MASK, _CMU_LFAPRESC0_LETIMER0_SHIFT, _CMU_LFAPRESC0_RTC_MASK, _CMU_LFAPRESC0_RTC_SHIFT, _CMU_LFBPRESC0_LEUART0_MASK, _CMU_LFBPRESC0_LEUART0_SHIFT, _CMU_LFBPRESC0_LEUART1_MASK, _CMU_LFBPRESC0_LEUART1_SHIFT, CMU, CMU_DivToLog2(), CMU_Log2ToDiv(), cmuClkDiv_1, cmuClkDiv_16, cmuClock_LCDpre, cmuClock_LESENSE, cmuClock_LETIMER0, cmuClock_LEUART0, cmuClock_LEUART1, and cmuClock_RTC.
Referenced by UDELAY_Calibrate().
void CMU_ClockDivSet | ( | CMU_Clock_TypeDef | clock, |
CMU_ClkDiv_TypeDef | div | ||
) |
[in] | clock | Clock point to set divisor/prescaler for. Notice that not all clock points have a divisor/prescaler, please refer to CMU overview in the reference manual. |
[in] | div | The clock divisor to use (<= cmuClkDiv_512). |
Definition at line 1141 of file em_cmu.c.
References _CMU_CTRL_HFCLKDIV_MASK, _CMU_CTRL_HFCLKDIV_SHIFT, _CMU_CTRL_HFLE_SHIFT, _CMU_HFCORECLKDIV_HFCORECLKDIV_MASK, _CMU_HFCORECLKDIV_HFCORECLKDIV_SHIFT, _CMU_HFCORECLKDIV_HFCORECLKLEDIV_SHIFT, _CMU_HFPERCLKDIV_HFPERCLKDIV_MASK, _CMU_HFPERCLKDIV_HFPERCLKDIV_SHIFT, _CMU_LFAPRESC0_LCD_MASK, _CMU_LFAPRESC0_LCD_SHIFT, _CMU_LFAPRESC0_LESENSE_MASK, _CMU_LFAPRESC0_LESENSE_SHIFT, _CMU_LFAPRESC0_LETIMER0_MASK, _CMU_LFAPRESC0_LETIMER0_SHIFT, _CMU_LFAPRESC0_RTC_MASK, _CMU_LFAPRESC0_RTC_SHIFT, _CMU_LFBPRESC0_LEUART0_MASK, _CMU_LFBPRESC0_LEUART0_SHIFT, _CMU_LFBPRESC0_LEUART1_MASK, _CMU_LFBPRESC0_LEUART1_SHIFT, BUS_RegBitWrite(), CMU, CMU_ClockFreqGet(), CMU_DivToLog2(), CMU_SYNCBUSY_LFAPRESC0, CMU_SYNCBUSY_LFBPRESC0, cmuClkDiv_1, cmuClkDiv_128, cmuClkDiv_16, cmuClkDiv_32768, cmuClkDiv_512, cmuClkDiv_8, cmuClock_HF, cmuClock_LCDpre, cmuClock_LESENSE, cmuClock_LETIMER0, cmuClock_LEUART0, cmuClock_LEUART1, cmuClock_RTC, and SystemCoreClockGet().
Referenced by CAPLESENSE_setupCMU(), RETARGET_SerialInit(), RTCDRV_Init(), SegmentLCD_Init(), and UDELAY_Calibrate().
uint32_t CMU_ClockFreqGet | ( | CMU_Clock_TypeDef | clock | ) |
[in] | clock | Clock point to fetch frequency for. |
Definition at line 1482 of file em_cmu.c.
References _CMU_CTRL_HFCLKDIV_MASK, _CMU_CTRL_HFCLKDIV_SHIFT, _CMU_HFPERCLKDIV_HFPERCLKDIV_MASK, _CMU_HFPERCLKDIV_HFPERCLKDIV_SHIFT, _CMU_LCDCTRL_FDIV_MASK, _CMU_LCDCTRL_FDIV_SHIFT, _CMU_LFAPRESC0_LCD_MASK, _CMU_LFAPRESC0_LCD_SHIFT, _CMU_LFAPRESC0_LESENSE_MASK, _CMU_LFAPRESC0_LESENSE_SHIFT, _CMU_LFAPRESC0_LETIMER0_MASK, _CMU_LFAPRESC0_LETIMER0_SHIFT, _CMU_LFAPRESC0_RTC_MASK, _CMU_LFAPRESC0_RTC_SHIFT, _CMU_LFBPRESC0_LEUART0_MASK, _CMU_LFBPRESC0_LEUART0_SHIFT, _CMU_LFBPRESC0_LEUART1_MASK, _CMU_LFBPRESC0_LEUART1_SHIFT, CMU, CMU_DivToLog2(), CMU_Log2ToDiv(), cmuClkDiv_16, cmuClock_LFA, cmuClock_LFB, SystemCoreClockGet(), and SystemHFClockGet().
Referenced by ADC_PrescaleCalc(), ADC_TimebaseCalc(), CMU_ClockDivSet(), CMU_ClockEnable(), DAC_PrescaleCalc(), I2C_BusFreqGet(), I2C_BusFreqSet(), LESENSE_ScanFreqSet(), LEUART_BaudrateGet(), LEUART_BaudrateSet(), MSC_Init(), USART_BaudrateAsyncSet(), USART_BaudrateGet(), USART_BaudrateSyncSet(), USBTIMER_Init(), and USTIMER_Init().
void CMU_ClockSelectSet | ( | CMU_Clock_TypeDef | clock, |
CMU_Select_TypeDef | ref | ||
) |
Notice that if a selected reference is not enabled prior to selecting its use, it will be enabled, and this function will wait for the selected oscillator to be stable. It will however NOT be disabled if another reference clock is selected later.
This feature is particularly important if selecting a new reference clock for the clock branch clocking the core, otherwise the system may halt.
[in] | clock | Clock branch to select reference clock for. One of: |
[in] | ref | Reference selected for clocking, please refer to reference manual for for details on which reference is available for a specific clock branch. |
Definition at line 2406 of file em_cmu.c.
References _CMU_CTRL_DBGCLK_MASK, _CMU_CTRL_HFLE_SHIFT, _CMU_CTRL_HFXOBUFCUR_MASK, _CMU_HFCORECLKDIV_HFCORECLKLEDIV_SHIFT, _CMU_HFCORECLKEN0_LE_SHIFT, _CMU_LFCLKSEL_LFA_DISABLED, _CMU_LFCLKSEL_LFA_HFCORECLKLEDIV2, _CMU_LFCLKSEL_LFA_LFRCO, _CMU_LFCLKSEL_LFA_LFXO, _CMU_LFCLKSEL_LFA_MASK, _CMU_LFCLKSEL_LFA_SHIFT, _CMU_LFCLKSEL_LFAE_MASK, _CMU_LFCLKSEL_LFAE_SHIFT, _CMU_LFCLKSEL_LFB_MASK, _CMU_LFCLKSEL_LFB_SHIFT, _CMU_LFCLKSEL_LFBE_MASK, _CMU_LFCLKSEL_LFBE_SHIFT, BUS_RegBitWrite(), CMU, CMU_CMD_HFCLKSEL_HFRCO, CMU_CMD_HFCLKSEL_HFXO, CMU_CMD_HFCLKSEL_LFRCO, CMU_CMD_HFCLKSEL_LFXO, CMU_CMD_USBCCLKSEL_HFCLKNODIV, CMU_CMD_USBCCLKSEL_LFRCO, CMU_CMD_USBCCLKSEL_LFXO, CMU_CTRL_DBGCLK_AUXHFRCO, CMU_CTRL_DBGCLK_HFCLK, CMU_CTRL_HFLE, CMU_CTRL_HFXOBUFCUR_BOOSTABOVE32MHZ, CMU_CTRL_HFXOBUFCUR_BOOSTUPTO32MHZ, CMU_HFCORECLKEN0_LE, CMU_OscillatorEnable(), CMU_STATUS_USBCHFCLKSEL, CMU_STATUS_USBCLFRCOSEL, CMU_STATUS_USBCLFXOSEL, cmuOsc_HFRCO, cmuOsc_HFXO, cmuOsc_LFRCO, cmuOsc_LFXO, cmuSelect_AUXHFRCO, cmuSelect_CORELEDIV2, cmuSelect_Disabled, cmuSelect_HFCLK, cmuSelect_HFRCO, cmuSelect_HFXO, cmuSelect_LFRCO, cmuSelect_LFXO, cmuSelect_ULFRCO, EMU_UpdateOscConfig(), SystemCoreClockGet(), and SystemHFXOClockGet().
Referenced by BSP_BccInit(), CAPLESENSE_setupCMU(), RETARGET_SerialInit(), RTCDRV_Init(), SegmentLCD_Init(), UDELAY_Calibrate(), USBD_Init(), and USBH_Init().
CMU_Select_TypeDef CMU_ClockSelectGet | ( | CMU_Clock_TypeDef | clock | ) |
[in] | clock | Clock branch to fetch selected ref. clock for. One of: |
clock
provided. Definition at line 2048 of file em_cmu.c.
References _CMU_CTRL_DBGCLK_MASK, _CMU_LFCLKSEL_LFA_MASK, _CMU_LFCLKSEL_LFAE_MASK, _CMU_LFCLKSEL_LFB_MASK, _CMU_LFCLKSEL_LFBE_MASK, _CMU_STATUS_USBCHFCLKSEL_MASK, CMU, CMU_CTRL_DBGCLK_AUXHFRCO, CMU_CTRL_DBGCLK_HFCLK, CMU_LFCLKSEL_LFA_HFCORECLKLEDIV2, CMU_LFCLKSEL_LFA_LFRCO, CMU_LFCLKSEL_LFA_LFXO, CMU_LFCLKSEL_LFB_HFCORECLKLEDIV2, CMU_LFCLKSEL_LFB_LFRCO, CMU_LFCLKSEL_LFB_LFXO, CMU_STATUS_HFRCOSEL, CMU_STATUS_HFXOSEL, CMU_STATUS_LFRCOSEL, CMU_STATUS_LFXOSEL, CMU_STATUS_USBCHFCLKSEL, CMU_STATUS_USBCLFRCOSEL, CMU_STATUS_USBCLFXOSEL, cmuSelect_AUXHFRCO, cmuSelect_CORELEDIV2, cmuSelect_Disabled, cmuSelect_Error, cmuSelect_HFCLK, cmuSelect_HFRCO, cmuSelect_HFXO, cmuSelect_LFRCO, cmuSelect_LFXO, and cmuSelect_ULFRCO.
Referenced by CMU_HFRCOBandSet(), UDELAY_Calibrate(), and USBD_Init().
void CMU_FreezeEnable | ( | bool | enable | ) |
Some CMU registers requires synchronization into the low frequency (LF) domain. The freeze feature allows for several such registers to be modified before passing them to the LF domain simultaneously (which takes place when the freeze mode is disabled).
Another usage scenario of this feature, is when using an API (such as the CMU API) for modifying several bit fields consecutively in the same register. If freeze mode is enabled during this sequence, stalling can be avoided.
[in] | enable |
|
Definition at line 2857 of file em_cmu.c.
References CMU, and CMU_FREEZE_REGFREEZE.
CMU_HFRCOBand_TypeDef CMU_HFRCOBandGet | ( | void | ) |
Definition at line 2889 of file em_cmu.c.
References _CMU_HFRCOCTRL_BAND_MASK, _CMU_HFRCOCTRL_BAND_SHIFT, and CMU.
void CMU_HFRCOBandSet | ( | CMU_HFRCOBand_TypeDef | band | ) |
[in] | band | HFRCO band to activate. |
Definition at line 2906 of file em_cmu.c.
References _CMU_HFRCOCTRL_BAND_MASK, _CMU_HFRCOCTRL_BAND_SHIFT, _CMU_HFRCOCTRL_TUNING_MASK, _CMU_HFRCOCTRL_TUNING_SHIFT, _DEVINFO_HFRCOCAL0_BAND11_MASK, _DEVINFO_HFRCOCAL0_BAND11_SHIFT, _DEVINFO_HFRCOCAL0_BAND14_MASK, _DEVINFO_HFRCOCAL0_BAND14_SHIFT, _DEVINFO_HFRCOCAL0_BAND1_MASK, _DEVINFO_HFRCOCAL0_BAND1_SHIFT, _DEVINFO_HFRCOCAL0_BAND7_MASK, _DEVINFO_HFRCOCAL0_BAND7_SHIFT, _DEVINFO_HFRCOCAL1_BAND21_MASK, _DEVINFO_HFRCOCAL1_BAND21_SHIFT, _DEVINFO_HFRCOCAL1_BAND28_MASK, _DEVINFO_HFRCOCAL1_BAND28_SHIFT, CMU, CMU_ClockSelectGet(), cmuClock_HF, cmuHFRCOBand_11MHz, cmuHFRCOBand_14MHz, cmuHFRCOBand_1MHz, cmuHFRCOBand_21MHz, cmuHFRCOBand_28MHz, cmuHFRCOBand_7MHz, cmuSelect_HFRCO, DEVINFO, and SystemCoreClockGet().
uint32_t CMU_HFRCOStartupDelayGet | ( | void | ) |
Please refer to the reference manual for further details.
Definition at line 3115 of file em_cmu.c.
References _CMU_HFRCOCTRL_SUDELAY_MASK, _CMU_HFRCOCTRL_SUDELAY_SHIFT, and CMU.
void CMU_HFRCOStartupDelaySet | ( | uint32_t | delay | ) |
Please refer to the reference manual for further details.
[in] | delay | The startup delay to set (<= 31). |
Definition at line 3132 of file em_cmu.c.
References _CMU_HFRCOCTRL_SUDELAY_MASK, _CMU_HFRCOCTRL_SUDELAY_SHIFT, and CMU.
uint32_t CMU_LCDClkFDIVGet | ( | void | ) |
Definition at line 3295 of file em_cmu.c.
References _CMU_LCDCTRL_FDIV_MASK, _CMU_LCDCTRL_FDIV_SHIFT, and CMU.
void CMU_LCDClkFDIVSet | ( | uint32_t | div | ) |
[in] | div | The FDIV setting to use. |
Definition at line 3318 of file em_cmu.c.
References _CMU_LCDCTRL_FDIV_MASK, _CMU_LCDCTRL_FDIV_SHIFT, CMU, CMU_LFACLKEN0_LCD, and cmuClkDiv_128.
Referenced by SegmentLCD_Init().
void CMU_OscillatorEnable | ( | CMU_Osc_TypeDef | osc, |
bool | enable, | ||
bool | wait | ||
) |
[in] | osc | The oscillator to enable/disable. |
[in] | enable |
|
[in] | wait | Only used if enable is true.
|
Definition at line 3394 of file em_cmu.c.
References _CMU_STATUS_AUXHFRCOENS_SHIFT, _CMU_STATUS_AUXHFRCORDY_SHIFT, _CMU_STATUS_HFRCOENS_SHIFT, _CMU_STATUS_HFRCORDY_SHIFT, _CMU_STATUS_HFXOENS_SHIFT, _CMU_STATUS_HFXORDY_SHIFT, _CMU_STATUS_LFRCOENS_SHIFT, _CMU_STATUS_LFRCORDY_SHIFT, _CMU_STATUS_LFXOENS_SHIFT, _CMU_STATUS_LFXORDY_SHIFT, BUS_RegBitRead(), BUS_RegMaskedRead(), CMU, CMU_OSCENCMD_AUXHFRCODIS, CMU_OSCENCMD_AUXHFRCOEN, CMU_OSCENCMD_HFRCODIS, CMU_OSCENCMD_HFRCOEN, CMU_OSCENCMD_HFXODIS, CMU_OSCENCMD_HFXOEN, CMU_OSCENCMD_LFRCODIS, CMU_OSCENCMD_LFRCOEN, CMU_OSCENCMD_LFXODIS, CMU_OSCENCMD_LFXOEN, cmuOsc_AUXHFRCO, cmuOsc_HFRCO, cmuOsc_HFXO, cmuOsc_LFRCO, cmuOsc_LFXO, cmuOsc_ULFRCO, and EMU_UpdateOscConfig().
Referenced by CMU_ClockSelectSet(), DBG_SWOEnable(), UDELAY_Calibrate(), and USBD_Init().
uint32_t CMU_OscillatorTuningGet | ( | CMU_Osc_TypeDef | osc | ) |
[in] | osc | Oscillator to get tuning value for, one of: |
Definition at line 3535 of file em_cmu.c.
References _CMU_AUXHFRCOCTRL_TUNING_MASK, _CMU_AUXHFRCOCTRL_TUNING_SHIFT, _CMU_HFRCOCTRL_TUNING_MASK, _CMU_HFRCOCTRL_TUNING_SHIFT, _CMU_LFRCOCTRL_TUNING_MASK, _CMU_LFRCOCTRL_TUNING_SHIFT, CMU, cmuOsc_AUXHFRCO, cmuOsc_HFRCO, and cmuOsc_LFRCO.
void CMU_OscillatorTuningSet | ( | CMU_Osc_TypeDef | osc, |
uint32_t | val | ||
) |
[in] | osc | Oscillator to set tuning value for, one of: |
[in] | val | The oscillator frequency tuning setting to use. |
Definition at line 3584 of file em_cmu.c.
References _CMU_AUXHFRCOCTRL_TUNING_MASK, _CMU_AUXHFRCOCTRL_TUNING_SHIFT, _CMU_HFRCOCTRL_TUNING_MASK, _CMU_HFRCOCTRL_TUNING_SHIFT, _CMU_LFRCOCTRL_TUNING_MASK, _CMU_LFRCOCTRL_TUNING_SHIFT, BUS_RegBitRead(), CMU, cmuOsc_AUXHFRCO, cmuOsc_HFRCO, and cmuOsc_LFRCO.
bool CMU_PCNTClockExternalGet | ( | unsigned int | instance | ) |
[in] | instance | PCNT instance number to get currently selected clock source for. |
Definition at line 3643 of file em_cmu.c.
References CMU, CMU_PCNTCTRL_PCNT0CLKSEL_PCNT0S0, CMU_PCNTCTRL_PCNT1CLKSEL_PCNT1S0, and CMU_PCNTCTRL_PCNT2CLKSEL_PCNT2S0.
void CMU_PCNTClockExternalSet | ( | unsigned int | instance, |
bool | external | ||
) |
[in] | instance | PCNT instance number to set selected clock source for. |
[in] | external | Set to true to select external clock, false to select LFBCLK. |
Definition at line 3685 of file em_cmu.c.
References BUS_RegBitWrite(), CMU, and PCNT_COUNT.
Referenced by PCNT_Init(), and PCNT_Reset().
__STATIC_INLINE void CMU_CalibrateCont | ( | bool | enable | ) |
[in] | enable | If true, enables continuous calibration, if false disables continuous calibrartion |
Definition at line 1153 of file em_cmu.h.
References _CMU_CALCTRL_CONT_SHIFT, BUS_RegBitWrite(), and CMU.
__STATIC_INLINE void CMU_CalibrateStart | ( | void | ) |
Definition at line 1167 of file em_cmu.h.
References CMU, and CMU_CMD_CALSTART.
__STATIC_INLINE uint32_t CMU_DivToLog2 | ( | CMU_ClkDiv_TypeDef | div | ) |
[in] | div | Unscaled dividend. |
Definition at line 1196 of file em_cmu.h.
Referenced by CMU_ClockDivGet(), CMU_ClockDivSet(), CMU_ClockFreqGet(), and RTCDRV_Init().
__STATIC_INLINE void CMU_IntClear | ( | uint32_t | flags | ) |
__STATIC_INLINE void CMU_IntDisable | ( | uint32_t | flags | ) |
__STATIC_INLINE void CMU_IntEnable | ( | uint32_t | flags | ) |
[in] | flags | CMU interrupt sources to enable. |
Definition at line 1248 of file em_cmu.h.
References CMU.
__STATIC_INLINE uint32_t CMU_IntGet | ( | void | ) |
__STATIC_INLINE uint32_t CMU_IntGetEnabled | ( | void | ) |
Useful for handling more interrupt sources in the same interrupt handler.
Definition at line 1283 of file em_cmu.h.
References CMU.
__STATIC_INLINE void CMU_IntSet | ( | uint32_t | flags | ) |
__STATIC_INLINE void CMU_Lock | ( | void | ) |
Please refer to the reference manual for CMU registers that will be locked.
Definition at line 1318 of file em_cmu.h.
References CMU, and CMU_LOCK_LOCKKEY_LOCK.
Referenced by EMU_EnterEM3().
__STATIC_INLINE uint32_t CMU_Log2ToDiv | ( | uint32_t | log2 | ) |
[in] | log2 | Logarithm of 2, as used by fixed prescalers. |
Definition at line 1334 of file em_cmu.h.
Referenced by CMU_ClockDivGet(), and CMU_ClockFreqGet().