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Defines | |
#define | EFM32_LFRCO_FREQ (32768UL) |
#define | EFM32_ULFRCO_FREQ (1000UL) |
#define | EFM32_HFXO_FREQ (32000000UL) |
#define | EFM32_LFXO_FREQ (EFM32_LFRCO_FREQ) |
Functions | |
__STATIC_INLINE uint8_t | GetProdRev (void) |
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 | SystemULFRCOClockGet (void) |
Get ultra 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. | |
Variables | |
uint32_t | SystemCoreClock |
System System Clock Frequency (Core Clock). |
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Definition in file system_efm32g.c.
#define EFM32_LFRCO_FREQ (32768UL) |
LFRCO frequency, tuned to below frequency during manufacturing.
Definition at line 41 of file system_efm32g.c.
Referenced by SystemHFClockGet(), and SystemLFRCOClockGet().
uint32_t SystemCoreClockGet | ( | void | ) |
Get the current core clock frequency.
Calculate and get the current core clock frequency based on the current configuration. Assuming that the SystemCoreClock global variable is maintained, the core clock frequency is stored in that variable as well. This function will however calculate the core clock based on actual HW configuration. It will also update the SystemCoreClock global variable.
Definition at line 123 of file system_efm32g.c.
References _CMU_HFCORECLKDIV_HFCORECLKDIV_MASK, _CMU_HFCORECLKDIV_HFCORECLKDIV_SHIFT, CMU, SystemCoreClock, and SystemHFClockGet().
Referenced by SystemCoreClockUpdate(), SystemHFXOClockSet(), and SystemLFXOClockSet().
uint32_t SystemHFClockGet | ( | void | ) |
Get the current HFCLK frequency.
Definition at line 152 of file system_efm32g.c.
References _CMU_HFRCOCTRL_BAND_MASK, CMU, CMU_HFRCOCTRL_BAND_11MHZ, CMU_HFRCOCTRL_BAND_14MHZ, CMU_HFRCOCTRL_BAND_1MHZ, CMU_HFRCOCTRL_BAND_21MHZ, CMU_HFRCOCTRL_BAND_28MHZ, CMU_HFRCOCTRL_BAND_7MHZ, CMU_STATUS_HFRCOSEL, CMU_STATUS_HFXOSEL, CMU_STATUS_LFRCOSEL, CMU_STATUS_LFXOSEL, EFM32_LFRCO_FREQ, and GetProdRev().
Referenced by SystemCoreClockGet().
uint32_t SystemHFXOClockGet | ( | void | ) |
Get high frequency crystal oscillator clock frequency for target system.
Definition at line 237 of file system_efm32g.c.
void SystemHFXOClockSet | ( | uint32_t | freq | ) |
Set high frequency crystal oscillator clock frequency for target system.
This is an EFM32 proprietary function, not part of the CMSIS definition.
[in] | freq | HFXO frequency in Hz used for target. |
Definition at line 263 of file system_efm32g.c.
References CMU, CMU_STATUS_HFXOSEL, and SystemCoreClockGet().
void SystemInit | ( | void | ) |
Initialize the system.
Do required generic HW system init.
Definition at line 293 of file system_efm32g.c.
uint32_t SystemLFRCOClockGet | ( | void | ) |
Get low frequency RC oscillator clock frequency for target system.
Definition at line 308 of file system_efm32g.c.
References EFM32_LFRCO_FREQ.
uint32_t SystemLFXOClockGet | ( | void | ) |
Get low frequency crystal oscillator clock frequency for target system.
Definition at line 344 of file system_efm32g.c.
void SystemLFXOClockSet | ( | uint32_t | freq | ) |
Set low frequency crystal oscillator clock frequency for target system.
This is an EFM32 proprietary function, not part of the CMSIS definition.
[in] | freq | LFXO frequency in Hz used for target. |
Definition at line 370 of file system_efm32g.c.
References CMU, CMU_STATUS_LFXOSEL, and SystemCoreClockGet().
uint32_t SystemULFRCOClockGet | ( | void | ) |
Get ultra low frequency RC oscillator clock frequency for target system.
Definition at line 327 of file system_efm32g.c.
References EFM32_ULFRCO_FREQ.
uint32_t SystemCoreClock |
System System Clock Frequency (Core Clock).
Required CMSIS global variable that must be kept up-to-date.
Definition at line 100 of file system_efm32g.c.
Referenced by SystemCoreClockGet().