The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

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mbed 2

This is the mbed 2 library. If you'd like to learn about Mbed OS please see the mbed-os docs.

Revision:
171:3a7713b1edbc
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TARGET_EFM32PG12_STK3402/TOOLCHAIN_GCC_ARM/system_efm32pg12b.h	Thu Nov 08 11:45:42 2018 +0000
@@ -0,0 +1,129 @@
+/***************************************************************************//**
+ * @file system_efm32pg12b.h
+ * @brief CMSIS Cortex-M3/M4 System Layer for EFM32 devices.
+ * @version 5.1.2
+ ******************************************************************************
+ * @section License
+ * <b>Copyright 2017 Silicon Laboratories, Inc. http://www.silabs.com</b>
+ ******************************************************************************
+ *
+ * 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:
+ *
+ * 1. The origin of this software must not be misrepresented; you must not
+ *    claim that you wrote the original software.@n
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.@n
+ * 3. This notice may not be removed or altered from any source distribution.
+ *
+ * DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Silicon Laboratories, Inc.
+ * has no obligation to support this Software. Silicon Laboratories, Inc. is
+ * providing the Software "AS IS", with no express or implied warranties of any
+ * kind, including, but not limited to, any implied warranties of
+ * merchantability or fitness for any particular purpose or warranties against
+ * infringement of any proprietary rights of a third party.
+ *
+ * Silicon Laboratories, Inc. will not be liable for any consequential,
+ * incidental, or special damages, or any other relief, or for any claim by
+ * any third party, arising from your use of this Software.
+ *
+ *****************************************************************************/
+
+#ifndef SYSTEM_EFM32_H
+#define SYSTEM_EFM32_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+
+/*******************************************************************************
+ **************************   GLOBAL VARIABLES   *******************************
+ ******************************************************************************/
+
+extern uint32_t SystemCoreClock;        /**< System Clock Frequency (Core Clock) */
+extern uint32_t SystemHfrcoFreq;        /**< System HFRCO frequency */
+
+/*******************************************************************************
+ *****************************   PROTOTYPES   **********************************
+ ******************************************************************************/
+
+void Reset_Handler(void);
+void NMI_Handler(void);
+void HardFault_Handler(void);
+void MemManage_Handler(void);
+void BusFault_Handler(void);
+void UsageFault_Handler(void);
+void SVC_Handler(void);
+void DebugMon_Handler(void);
+void PendSV_Handler(void);
+void SysTick_Handler(void);
+
+void EMU_IRQHandler(void);
+void WDOG0_IRQHandler(void);
+void LDMA_IRQHandler(void);
+void GPIO_EVEN_IRQHandler(void);
+void TIMER0_IRQHandler(void);
+void USART0_RX_IRQHandler(void);
+void USART0_TX_IRQHandler(void);
+void ACMP0_IRQHandler(void);
+void ADC0_IRQHandler(void);
+void IDAC0_IRQHandler(void);
+void I2C0_IRQHandler(void);
+void GPIO_ODD_IRQHandler(void);
+void TIMER1_IRQHandler(void);
+void USART1_RX_IRQHandler(void);
+void USART1_TX_IRQHandler(void);
+void LEUART0_IRQHandler(void);
+void PCNT0_IRQHandler(void);
+void CMU_IRQHandler(void);
+void MSC_IRQHandler(void);
+void LETIMER0_IRQHandler(void);
+void RTCC_IRQHandler(void);
+void CRYOTIMER_IRQHandler(void);
+
+#if (__FPU_PRESENT == 1)
+void FPUEH_IRQHandler(void);
+#endif
+
+uint32_t SystemCoreClockGet(void);
+
+/**************************************************************************//**
+ * @brief
+ *   Update CMSIS SystemCoreClock variable.
+ *
+ * @details
+ *   CMSIS defines a global variable SystemCoreClock that shall hold the
+ *   core frequency in Hz. If the core frequency is dynamically changed, the
+ *   variable must be kept updated in order to be CMSIS compliant.
+ *
+ *   Notice that only if changing the core clock frequency through the EFM CMU
+ *   API, this variable will be kept updated. This function is only provided
+ *   for CMSIS compliance and if a user modifies the the core clock outside
+ *   the CMU API.
+ *****************************************************************************/
+static __INLINE void SystemCoreClockUpdate(void)
+{
+  SystemCoreClockGet();
+}
+
+uint32_t SystemMaxCoreClockGet(void);
+
+void SystemInit(void);
+uint32_t SystemHFClockGet(void);
+
+uint32_t SystemHFXOClockGet(void);
+void SystemHFXOClockSet(uint32_t freq);
+
+uint32_t SystemLFRCOClockGet(void);
+uint32_t SystemULFRCOClockGet(void);
+
+uint32_t SystemLFXOClockGet(void);
+void SystemLFXOClockSet(uint32_t freq);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* SYSTEM_EFM32_H */