system_efm32jg1b.c File Reference
CMSIS Cortex-M3/M4 System Layer for EFM32 devices.
License
Copyright 2019 Silicon Laboratories Inc. www.silabs.com
SPDX-License-Identifier: Zlib
The licensor of this software is Silicon Laboratories Inc.
This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.
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:
- The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
- Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
- This notice may not be removed or altered from any source distribution.
Definition in file
system_efm32jg1b.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 |
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| uint32_t | SystemCoreClockGet (void) |
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Get the current core clock frequency.
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| uint32_t | SystemHFClockGet (void) |
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Get the current HFCLK frequency.
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| uint32_t | SystemHFXOClockGet (void) |
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Get high frequency crystal oscillator clock frequency for target system.
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| void | SystemHFXOClockSet (uint32_t freq) |
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Set high frequency crystal oscillator clock frequency for target system.
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| void | SystemInit (void) |
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Initialize the system.
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| uint32_t | SystemLFRCOClockGet (void) |
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Get low frequency RC oscillator clock frequency for target system.
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| uint32_t | SystemLFXOClockGet (void) |
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Get low frequency crystal oscillator clock frequency for target system.
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| void | SystemLFXOClockSet (uint32_t freq) |
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Set low frequency crystal oscillator clock frequency for target system.
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| uint32_t | SystemMaxCoreClockGet (void) |
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Get the maximum core clock frequency.
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| uint32_t | SystemULFRCOClockGet (void) |
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Get ultra low frequency RC oscillator clock frequency for target system.
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Variables |
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| uint32_t | SystemCoreClock = EFM32_HFRCO_STARTUP_FREQ |
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System System Clock Frequency (Core Clock).
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| uint32_t | SystemHfrcoFreq = EFM32_HFRCO_STARTUP_FREQ |
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System HFRCO frequency.
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Macro Definition Documentation
| #define EFM32_HFRCO_MAX_FREQ (38000000UL) |
Maximum HFRCO frequency
Definition at line
57
of file
system_efm32jg1b.c
.
Referenced by SystemMaxCoreClockGet() .
| #define EFM32_HFRCO_STARTUP_FREQ (19000000UL) |
HFRCO startup frequency
Definition at line
67
of file
system_efm32jg1b.c
.
| #define EFM32_HFXO_FREQ (40000000UL) |
HFXO frequency
Definition at line
62
of file
system_efm32jg1b.c
.
Referenced by SystemMaxCoreClockGet() .
| #define EFM32_LFRCO_FREQ (32768UL) |
LFRCO frequency, tuned to below frequency during manufacturing.
Definition at line
39
of file
system_efm32jg1b.c
.
Referenced by SystemHFClockGet() , and SystemLFRCOClockGet() .
| #define EFM32_LFXO_FREQ ( EFM32_LFRCO_FREQ ) |
(DO_NOT_INCLUDE_WITH_DOXYGEN) LFXO frequency
Definition at line
80
of file
system_efm32jg1b.c
.
| #define EFM32_ULFRCO_FREQ (1000UL) |
ULFRCO frequency
Definition at line
41
of file
system_efm32jg1b.c
.
Referenced by SystemULFRCOClockGet() .