EFR32 Mighty Gecko 13 Software Documentation
efr32mg13-doc-5.1.2
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CMSIS Cortex-M3/M4 System Layer for EFR32 devices.
Copyright 2017 Silicon Laboratories, Inc. http://www.silabs.com
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Definition in file system_efr32mg13p.c.
Go to the source code of this file.
Macros | |
#define | EFR32_HFRCO_MAX_FREQ (38000000UL) |
#define | EFR32_HFRCO_STARTUP_FREQ (19000000UL) |
#define | EFR32_HFXO_FREQ (38400000UL) |
#define | EFR32_LFRCO_FREQ (32768UL) |
#define | EFR32_LFXO_FREQ (EFR32_LFRCO_FREQ) |
#define | EFR32_ULFRCO_FREQ (1000UL) |
Functions | |
uint32_t | SystemCoreClockGet (void) |
Get the current core clock frequency. More... | |
uint32_t | SystemHFClockGet (void) |
Get the current HFCLK frequency. More... | |
uint32_t | SystemHFXOClockGet (void) |
Get high frequency crystal oscillator clock frequency for target system. More... | |
void | SystemHFXOClockSet (uint32_t freq) |
Set high frequency crystal oscillator clock frequency for target system. More... | |
void | SystemInit (void) |
Initialize the system. More... | |
uint32_t | SystemLFRCOClockGet (void) |
Get low frequency RC oscillator clock frequency for target system. More... | |
uint32_t | SystemLFXOClockGet (void) |
Get low frequency crystal oscillator clock frequency for target system. More... | |
void | SystemLFXOClockSet (uint32_t freq) |
Set low frequency crystal oscillator clock frequency for target system. More... | |
uint32_t | SystemMaxCoreClockGet (void) |
Get the maximum core clock frequency. More... | |
uint32_t | SystemULFRCOClockGet (void) |
Get ultra low frequency RC oscillator clock frequency for target system. More... | |
Variables | |
uint32_t | SystemCoreClock |
System System Clock Frequency (Core Clock). More... | |
uint32_t | SystemHfrcoFreq = EFR32_HFRCO_STARTUP_FREQ |
System HFRCO frequency. More... | |
#define EFR32_LFRCO_FREQ (32768UL) |
LFRCO frequency, tuned to below frequency during manufacturing.
Definition at line 41 of file system_efr32mg13p.c.
Referenced by SystemHFClockGet(), and SystemLFRCOClockGet().
#define EFR32_LFXO_FREQ (EFR32_LFRCO_FREQ) |
(DO_NOT_INCLUDE_WITH_DOXYGEN)
Definition at line 78 of file system_efr32mg13p.c.
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 137 of file system_efr32mg13p.c.
References _CMU_HFCOREPRESC_PRESC_MASK, _CMU_HFCOREPRESC_PRESC_SHIFT, CMU, SystemCoreClock, and SystemHFClockGet().
Referenced by CMU_ClockDivSet(), CMU_ClockFreqGet(), CMU_ClockPrescSet(), CMU_ClockSelectSet(), CMU_HFRCOBandSet(), MSC_Init(), SystemCoreClockUpdate(), SystemHFXOClockSet(), SystemLFXOClockSet(), TFT_AddressMappedInit(), and TFT_DirectInit().
uint32_t SystemHFClockGet | ( | void | ) |
Get the current HFCLK frequency.
Definition at line 181 of file system_efr32mg13p.c.
References _CMU_HFCLKSTATUS_SELECTED_MASK, _CMU_HFPRESC_PRESC_MASK, _CMU_HFPRESC_PRESC_SHIFT, CMU, CMU_HFCLKSTATUS_SELECTED_HFXO, CMU_HFCLKSTATUS_SELECTED_LFRCO, CMU_HFCLKSTATUS_SELECTED_LFXO, EFR32_LFRCO_FREQ, and SystemHfrcoFreq.
Referenced by CMU_ClockDivSet(), CMU_ClockFreqGet(), EMU_VScaleEM01(), EMU_VScaleEM01ByClock(), and SystemCoreClockGet().
uint32_t SystemHFXOClockGet | ( | void | ) |
Get high frequency crystal oscillator clock frequency for target system.
Definition at line 231 of file system_efr32mg13p.c.
Referenced by CMU_ClockSelectSet(), and CMU_HFXOAutostartEnable().
void SystemHFXOClockSet | ( | uint32_t | freq | ) |
Set high frequency crystal oscillator clock frequency for target system.
[in] | freq | HFXO frequency in Hz used for target. |
Definition at line 257 of file system_efr32mg13p.c.
References _CMU_HFCLKSTATUS_SELECTED_MASK, CMU, CMU_HFCLKSTATUS_SELECTED_HFXO, and SystemCoreClockGet().
void SystemInit | ( | void | ) |
Initialize the system.
Do required generic HW system init.
Definition at line 287 of file system_efr32mg13p.c.
uint32_t SystemLFRCOClockGet | ( | void | ) |
Get low frequency RC oscillator clock frequency for target system.
Definition at line 307 of file system_efr32mg13p.c.
References EFR32_LFRCO_FREQ.
uint32_t SystemLFXOClockGet | ( | void | ) |
Get low frequency crystal oscillator clock frequency for target system.
Definition at line 343 of file system_efr32mg13p.c.
Referenced by UARTDRV_InitLeuart().
void SystemLFXOClockSet | ( | uint32_t | freq | ) |
Set low frequency crystal oscillator clock frequency for target system.
[in] | freq | LFXO frequency in Hz used for target. |
Definition at line 369 of file system_efr32mg13p.c.
References _CMU_HFCLKSTATUS_SELECTED_MASK, CMU, CMU_HFCLKSTATUS_SELECTED_LFXO, and SystemCoreClockGet().
uint32_t SystemMaxCoreClockGet | ( | void | ) |
Get the maximum core clock frequency.
Definition at line 164 of file system_efr32mg13p.c.
uint32_t SystemULFRCOClockGet | ( | void | ) |
Get ultra low frequency RC oscillator clock frequency for target system.
Definition at line 326 of file system_efr32mg13p.c.
uint32_t SystemCoreClock |
System System Clock Frequency (Core Clock).
(DO_NOT_INCLUDE_WITH_DOXYGEN)
Required CMSIS global variable that must be kept up-to-date.
Definition at line 100 of file system_efr32mg13p.c.
Referenced by SystemCoreClockGet().
uint32_t SystemHfrcoFreq = EFR32_HFRCO_STARTUP_FREQ |
System HFRCO frequency.
Frequency of the system HFRCO oscillator
Definition at line 113 of file system_efr32mg13p.c.
Referenced by CMU_HFRCOBandGet(), CMU_HFRCOBandSet(), and SystemHFClockGet().