system_efm32pg12b.c File Reference

CMSIS Cortex-M3/M4 System Layer for EFM32 devices.

Version
5.5.0

License

Copyright 2018 Silicon Laboratories, Inc. www.silabs.com

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  3. This notice may not be removed or altered from any source distribution.

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Definition in file system_efm32pg12b.c.

#include <stdint.h>
#include "em_device.h"

Macros

#define EFM32_HFRCO_MAX_FREQ   (38000000UL)
 
#define EFM32_HFRCO_STARTUP_FREQ   (19000000UL)
 
#define EFM32_HFXO_FREQ   (40000000UL)
 
#define EFM32_LFRCO_FREQ   (32768UL)
 
#define EFM32_LFXO_FREQ   (EFM32_LFRCO_FREQ)
 
#define EFM32_ULFRCO_FREQ   (1000UL)
 

Functions

uint32_t SystemCoreClockGet (void)
 Get the current core clock frequency.
 
uint32_t SystemHFClockGet (void)
 Get the current HFCLK frequency.
 
uint32_t SystemHFXOClockGet (void)
 Get high frequency crystal oscillator clock frequency for target system.
 
void SystemHFXOClockSet (uint32_t freq)
 Set high frequency crystal oscillator clock frequency for target system.
 
void SystemInit (void)
 Initialize the system.
 
uint32_t SystemLFRCOClockGet (void)
 Get low frequency RC oscillator clock frequency for target system.
 
uint32_t SystemLFXOClockGet (void)
 Get low frequency crystal oscillator clock frequency for target system.
 
void SystemLFXOClockSet (uint32_t freq)
 Set low frequency crystal oscillator clock frequency for target system.
 
uint32_t SystemMaxCoreClockGet (void)
 Get the maximum core clock frequency.
 
uint32_t SystemULFRCOClockGet (void)
 Get ultra low frequency RC oscillator clock frequency for target system.
 

Variables

uint32_t SystemCoreClock = EFM32_HFRCO_STARTUP_FREQ
 System System Clock Frequency (Core Clock).
 
uint32_t SystemHfrcoFreq = EFM32_HFRCO_STARTUP_FREQ
 System HFRCO frequency.
 

Macro Definition Documentation

#define EFM32_HFRCO_MAX_FREQ   (38000000UL)

Maximum HFRCO frequency

Definition at line 59 of file system_efm32pg12b.c.

Referenced by SystemMaxCoreClockGet().

#define EFM32_HFRCO_STARTUP_FREQ   (19000000UL)

HFRCO startup frequency

Definition at line 69 of file system_efm32pg12b.c.

#define EFM32_HFXO_FREQ   (40000000UL)

HFXO frequency

Definition at line 64 of file system_efm32pg12b.c.

Referenced by SystemMaxCoreClockGet().

#define EFM32_LFRCO_FREQ   (32768UL)

LFRCO frequency, tuned to below frequency during manufacturing.

Definition at line 41 of file system_efm32pg12b.c.

Referenced by SystemHFClockGet(), and SystemLFRCOClockGet().

#define EFM32_LFXO_FREQ   (EFM32_LFRCO_FREQ)

(DO_NOT_INCLUDE_WITH_DOXYGEN) LFXO frequency

Definition at line 82 of file system_efm32pg12b.c.

#define EFM32_ULFRCO_FREQ   (1000UL)

ULFRCO frequency

Definition at line 43 of file system_efm32pg12b.c.

Referenced by SystemULFRCOClockGet().