infinity: Move project specific files to local

keyboard/infinity/Makefile

@@ -24,7 +24,10 @@ INCLUDE_PATHS = -I.
 #MOUSEKEY_ENABLE = yes
 
 
-include $(TMK_DIR)/tool/mbed/mk20d50m.mk
+include mbed-infinity.mk
 include $(TMK_DIR)/tool/mbed/mbed.mk
 include $(TMK_DIR)/tool/mbed/common.mk
 include $(TMK_DIR)/tool/mbed/gcc.mk
+
+program:
+	dfu-util -D $(OBJDIR)/$(PROJECT).bin

keyboard/infinity/mbed-infinity.mk

@@ -15,9 +15,9 @@ CC_SYMBOLS += \
 	-D__MBED__=1
 
 OBJECTS += \
+	$(OBJDIR)/mbed-infinity/cmsis_nvic.o \
+	$(OBJDIR)/mbed-infinity/system_MK20D5.o \
 	$(OBJDIR)/libraries/mbed/targets/cmsis/TARGET_Freescale/TARGET_K20D50M/TOOLCHAIN_GCC_ARM/startup_MK20D5.o \
-	$(OBJDIR)/libraries/mbed/targets/cmsis/TARGET_Freescale/TARGET_K20D50M/cmsis_nvic.o \
-	$(OBJDIR)/libraries/mbed/targets/cmsis/TARGET_Freescale/TARGET_K20D50M/system_MK20D5.o \
 	$(OBJDIR)/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_K20D50M/analogin_api.o \
 	$(OBJDIR)/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_K20D50M/gpio_api.o \
 	$(OBJDIR)/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_K20D50M/gpio_irq_api.o \
@@ -32,6 +32,7 @@ OBJECTS += \
 	$(OBJDIR)/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_K20D50M/us_ticker.o
 
 INCLUDE_PATHS += \
+	-Imbed \
 	-I$(MBED_DIR)/libraries/mbed/targets \
 	-I$(MBED_DIR)/libraries/mbed/targets/cmsis \
 	-I$(MBED_DIR)/libraries/mbed/targets/cmsis/TARGET_Freescale \
@@ -41,4 +42,4 @@ INCLUDE_PATHS += \
 	-I$(MBED_DIR)/libraries/mbed/targets/hal/TARGET_Freescale \
 	-I$(MBED_DIR)/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_K20D50M
 
-LINKER_SCRIPT = infinity.ld
+LINKER_SCRIPT = mbed-infinity/infinity.ld

keyboard/infinity/mbed-infinity/cmsis_nvic.c

@@ -0,0 +1,55 @@
+/* mbed Microcontroller Library
+ * CMSIS-style functionality to support dynamic vectors
+ *******************************************************************************
+ * Copyright (c) 2011 ARM Limited. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of ARM Limited nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *******************************************************************************
+ */
+#include "cmsis_nvic.h"
+
+#define NVIC_RAM_VECTOR_ADDRESS (0x1FFFE000)  // Vectors positioned at start of RAM
+#define NVIC_FLASH_VECTOR_ADDRESS (0x1000)       // Initial vector position in flash
+
+void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector) {
+    uint32_t *vectors = (uint32_t*)SCB->VTOR;
+    uint32_t i;
+
+    // Copy and switch to dynamic vectors if the first time called
+    if (SCB->VTOR == NVIC_FLASH_VECTOR_ADDRESS) {
+        uint32_t *old_vectors = vectors;
+        vectors = (uint32_t*)NVIC_RAM_VECTOR_ADDRESS;
+        for (i=0; i<NVIC_NUM_VECTORS; i++) {
+            vectors[i] = old_vectors[i];
+        }
+        SCB->VTOR = (uint32_t)NVIC_RAM_VECTOR_ADDRESS;
+    }
+    vectors[IRQn + 16] = vector;
+}
+
+uint32_t NVIC_GetVector(IRQn_Type IRQn) {
+    uint32_t *vectors = (uint32_t*)SCB->VTOR;
+    return vectors[IRQn + 16];
+}

keyboard/infinity/mbed-infinity/system_MK20D5.c

@@ -0,0 +1,299 @@
+/*
+** ###################################################################
+**     Compilers:           ARM Compiler
+**                          Freescale C/C++ for Embedded ARM
+**                          GNU C Compiler
+**                          IAR ANSI C/C++ Compiler for ARM
+**
+**     Reference manuals:   K20P64M50SF0RM Rev. 1, Oct 2011
+**                          K20P32M50SF0RM Rev. 1, Oct 2011
+**                          K20P48M50SF0RM Rev. 1, Oct 2011
+**
+**     Version:             rev. 1.0, 2011-12-15
+**
+**     Abstract:
+**         Provides a system configuration function and a global variable that
+**         contains the system frequency. It configures the device and initializes
+**         the oscillator (PLL) that is part of the microcontroller device.
+**
+**     Copyright: 2011 Freescale Semiconductor, Inc. All Rights Reserved.
+**
+**     http:                 www.freescale.com
+**     mail:                 support@freescale.com
+**
+**     Revisions:
+**     - rev. 1.0 (2011-12-15)
+**         Initial version
+**
+** ###################################################################
+*/
+
+/**
+ * @file MK20D5
+ * @version 1.0
+ * @date 2011-12-15
+ * @brief Device specific configuration file for MK20D5 (implementation file)
+ *
+ * Provides a system configuration function and a global variable that contains
+ * the system frequency. It configures the device and initializes the oscillator
+ * (PLL) that is part of the microcontroller device.
+ */
+
+#include <stdint.h>
+#include "MK20D5.h"
+
+#define DISABLE_WDOG    1
+
+#define CLOCK_SETUP     3
+/* Predefined clock setups
+   0 ... Multipurpose Clock Generator (MCG) in FLL Engaged Internal (FEI) mode
+         Reference clock source for MCG module is the slow internal clock source 32.768kHz
+         Core clock = 41.94MHz, BusClock = 41.94MHz
+   1 ... Multipurpose Clock Generator (MCG) in PLL Engaged External (PEE) mode
+         Reference clock source for MCG module is an external crystal 8MHz
+         Core clock = 48MHz, BusClock = 48MHz
+   2 ... Multipurpose Clock Generator (MCG) in Bypassed Low Power External (BLPE) mode
+         Core clock/Bus clock derived directly from an external crystal 8MHz with no multiplication
+         Core clock = 8MHz, BusClock = 8MHz
+*/
+
+/*----------------------------------------------------------------------------
+  Define clock source values
+ *----------------------------------------------------------------------------*/
+#if (CLOCK_SETUP == 0)
+    #define CPU_XTAL_CLK_HZ                 8000000u /* Value of the external crystal or oscillator clock frequency in Hz */
+    #define CPU_XTAL32k_CLK_HZ              32768u   /* Value of the external 32k crystal or oscillator clock frequency in Hz */
+    #define CPU_INT_SLOW_CLK_HZ             32768u   /* Value of the slow internal oscillator clock frequency in Hz  */
+    #define CPU_INT_FAST_CLK_HZ             4000000u /* Value of the fast internal oscillator clock frequency in Hz  */
+    #define DEFAULT_SYSTEM_CLOCK            41943040u /* Default System clock value */
+#elif (CLOCK_SETUP == 1)
+    #define CPU_XTAL_CLK_HZ                 8000000u /* Value of the external crystal or oscillator clock frequency in Hz */
+    #define CPU_XTAL32k_CLK_HZ              32768u   /* Value of the external 32k crystal or oscillator clock frequency in Hz */
+    #define CPU_INT_SLOW_CLK_HZ             32768u   /* Value of the slow internal oscillator clock frequency in Hz  */
+    #define CPU_INT_FAST_CLK_HZ             4000000u /* Value of the fast internal oscillator clock frequency in Hz  */
+    #define DEFAULT_SYSTEM_CLOCK            48000000u /* Default System clock value */
+#elif (CLOCK_SETUP == 2)
+    #define CPU_XTAL_CLK_HZ                 8000000u /* Value of the external crystal or oscillator clock frequency in Hz */
+    #define CPU_XTAL32k_CLK_HZ              32768u   /* Value of the external 32k crystal or oscillator clock frequency in Hz */
+    #define CPU_INT_SLOW_CLK_HZ             32768u   /* Value of the slow internal oscillator clock frequency in Hz  */
+    #define CPU_INT_FAST_CLK_HZ             4000000u /* Value of the fast internal oscillator clock frequency in Hz  */
+    #define DEFAULT_SYSTEM_CLOCK            8000000u /* Default System clock value */
+#elif (CLOCK_SETUP == 3)
+    /* for Infinity */
+    #define CPU_XTAL_CLK_HZ                 8000000u
+    #define CPU_XTAL32k_CLK_HZ              32768u
+    #define CPU_INT_SLOW_CLK_HZ             32768u
+    #define CPU_INT_FAST_CLK_HZ             4000000u
+    #define DEFAULT_SYSTEM_CLOCK            48000000u
+#endif
+
+
+/* ----------------------------------------------------------------------------
+   -- Core clock
+   ---------------------------------------------------------------------------- */
+
+uint32_t SystemCoreClock = DEFAULT_SYSTEM_CLOCK;
+
+/* ----------------------------------------------------------------------------
+   -- SystemInit()
+   ---------------------------------------------------------------------------- */
+
+void SystemInit (void) {
+#if (DISABLE_WDOG)
+  /* Disable the WDOG module */
+  /* WDOG_UNLOCK: WDOGUNLOCK=0xC520 */
+  WDOG->UNLOCK = (uint16_t)0xC520u;     /* Key 1 */
+  /* WDOG_UNLOCK : WDOGUNLOCK=0xD928 */
+  WDOG->UNLOCK  = (uint16_t)0xD928u;    /* Key 2 */
+  /* WDOG_STCTRLH: ??=0,DISTESTWDOG=0,BYTESEL=0,TESTSEL=0,TESTWDOG=0,??=0,STNDBYEN=1,WAITEN=1,STOPEN=1,DBGEN=0,ALLOWUPDATE=1,WINEN=0,IRQRSTEN=0,CLKSRC=1,WDOGEN=0 */
+  WDOG->STCTRLH = (uint16_t)0x01D2u;
+#endif /* (DISABLE_WDOG) */
+#if (CLOCK_SETUP == 0)
+  /* SIM->CLKDIV1: OUTDIV1=0,OUTDIV2=0,OUTDIV3=1,OUTDIV4=1,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0 */
+  SIM->CLKDIV1 = (uint32_t)0x00110000u; /* Update system prescalers */
+  /* Switch to FEI Mode */
+  /* MCG->C1: CLKS=0,FRDIV=0,IREFS=1,IRCLKEN=1,IREFSTEN=0 */
+  MCG->C1 = (uint8_t)0x06u;
+  /* MCG->C2: ??=0,??=0,RANGE0=0,HGO=0,EREFS=0,LP=0,IRCS=0 */
+  MCG->C2 = (uint8_t)0x00u;
+  /* MCG_C4: DMX32=0,DRST_DRS=1 */
+  MCG->C4 = (uint8_t)((MCG->C4 & (uint8_t)~(uint8_t)0xC0u) | (uint8_t)0x20u);
+  /* MCG->C5: ??=0,PLLCLKEN=0,PLLSTEN=0,PRDIV0=0 */
+  MCG->C5 = (uint8_t)0x00u;
+  /* MCG->C6: LOLIE=0,PLLS=0,CME=0,VDIV0=0 */
+  MCG->C6 = (uint8_t)0x00u;
+  while((MCG->S & MCG_S_IREFST_MASK) == 0u) { /* Check that the source of the FLL reference clock is the internal reference clock. */
+  }
+  while((MCG->S & 0x0Cu) != 0x00u) {    /* Wait until output of the FLL is selected */
+  }
+#elif (CLOCK_SETUP == 1)
+  /* SIM->CLKDIV1: OUTDIV1=0,OUTDIV2=0,OUTDIV3=1,OUTDIV4=1,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0 */
+  SIM->CLKDIV1 = (uint32_t)0x00110000u; /* Update system prescalers */
+  /* Switch to FBE Mode */
+  /* OSC0->CR: ERCLKEN=0,??=0,EREFSTEN=0,??=0,SC2P=0,SC4P=0,SC8P=0,SC16P=0 */
+  OSC0->CR = (uint8_t)0x00u;
+  /* MCG->C7: OSCSEL=0 */
+  MCG->C7 = (uint8_t)0x00u;
+  /* MCG->C2: ??=0,??=0,RANGE0=2,HGO=0,EREFS=1,LP=0,IRCS=0 */
+  MCG->C2 = (uint8_t)0x24u;
+  /* MCG->C1: CLKS=2,FRDIV=3,IREFS=0,IRCLKEN=1,IREFSTEN=0 */
+  MCG->C1 = (uint8_t)0x9Au;
+  /* MCG->C4: DMX32=0,DRST_DRS=0 */
+  MCG->C4 &= (uint8_t)~(uint8_t)0xE0u;
+  /* MCG->C5: ??=0,PLLCLKEN=0,PLLSTEN=0,PRDIV0=3 */
+  MCG->C5 = (uint8_t)0x03u;
+  /* MCG->C6: LOLIE=0,PLLS=0,CME=0,VDIV0=0 */
+  MCG->C6 = (uint8_t)0x00u;
+  while((MCG->S & MCG_S_OSCINIT0_MASK) == 0u) { /* Check that the oscillator is running */
+  }
+#if 0 /* ARM: THIS CHECK IS REMOVED DUE TO BUG WITH SLOW IRC IN REV. 1.0 */
+  while((MCG->S & MCG_S_IREFST_MASK) != 0u) { /* Check that the source of the FLL reference clock is the external reference clock. */
+  }
+#endif
+  while((MCG->S & 0x0Cu) != 0x08u) {    /* Wait until external reference clock is selected as MCG output */
+  }
+  /* Switch to PBE Mode */
+  /* MCG_C5: ??=0,PLLCLKEN=0,PLLSTEN=0,PRDIV0=3 */
+  MCG->C5 = (uint8_t)0x03u;
+  /* MCG->C6: LOLIE=0,PLLS=1,CME=0,VDIV0=0 */
+  MCG->C6 = (uint8_t)0x40u;
+  while((MCG->S & MCG_S_PLLST_MASK) == 0u) { /* Wait until the source of the PLLS clock has switched to the PLL */
+  }
+  while((MCG->S & MCG_S_LOCK0_MASK) == 0u) { /* Wait until locked */
+  }
+  /* Switch to PEE Mode */
+  /* MCG->C1: CLKS=0,FRDIV=3,IREFS=0,IRCLKEN=1,IREFSTEN=0 */
+  MCG->C1 = (uint8_t)0x1Au;
+  while((MCG->S & 0x0Cu) != 0x0Cu) {    /* Wait until output of the PLL is selected */
+  }
+  while((MCG->S & MCG_S_LOCK0_MASK) == 0u) { /* Wait until locked */
+  }
+#elif (CLOCK_SETUP == 2)
+  /* SIM_CLKDIV1: OUTDIV1=0,OUTDIV2=0,OUTDIV3=1,OUTDIV4=1,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0 */
+  SIM->CLKDIV1 = (uint32_t)0x00110000u; /* Update system prescalers */
+  /* Switch to FBE Mode */
+  /* OSC0->CR: ERCLKEN=0,??=0,EREFSTEN=0,??=0,SC2P=0,SC4P=0,SC8P=0,SC16P=0 */
+  OSC0->CR = (uint8_t)0x00u;
+  /* MCG->C7: OSCSEL=0 */
+  MCG->C7 = (uint8_t)0x00u;
+  /* MCG->C2: ??=0,??=0,RANGE0=2,HGO=0,EREFS=1,LP=0,IRCS=0 */
+  MCG->C2 = (uint8_t)0x24u;
+  /* MCG->C1: CLKS=2,FRDIV=3,IREFS=0,IRCLKEN=1,IREFSTEN=0 */
+  MCG->C1 = (uint8_t)0x9Au;
+  /* MCG->C4: DMX32=0,DRST_DRS=0 */
+  MCG->C4 &= (uint8_t)~(uint8_t)0xE0u;
+  /* MCG->C5: ??=0,PLLCLKEN=0,PLLSTEN=0,PRDIV0=0 */
+  MCG->C5 = (uint8_t)0x00u;
+  /* MCG->C6: LOLIE=0,PLLS=0,CME=0,VDIV0=0 */
+  MCG->C6 = (uint8_t)0x00u;
+  while((MCG->S & MCG_S_OSCINIT0_MASK) == 0u) { /* Check that the oscillator is running */
+  }
+#if 0 /* ARM: THIS CHECK IS REMOVED DUE TO BUG WITH SLOW IRC IN REV. 1.0 */
+  while((MCG->S & MCG_S_IREFST_MASK) != 0u) { /* Check that the source of the FLL reference clock is the external reference clock. */
+  }
+#endif
+  while((MCG->S & 0x0CU) != 0x08u) {    /* Wait until external reference clock is selected as MCG output */
+  }
+  /* Switch to BLPE Mode */
+  /* MCG->C2: ??=0,??=0,RANGE0=2,HGO=0,EREFS=1,LP=0,IRCS=0 */
+  MCG->C2 = (uint8_t)0x24u;
+
+#elif (CLOCK_SETUP == 3)
+  /* for Infinity FEI: 48MHz */
+
+  /* OUTDIV1(core/system): 48/1, OUTDIV2(bus): 48/1, OUTDIV4(flash): 48/2 */
+  SIM->CLKDIV1 = SIM_CLKDIV1_OUTDIV1(0) | SIM_CLKDIV1_OUTDIV2(0) | SIM_CLKDIV1_OUTDIV4(1);
+  MCG->C1 = MCG_C1_IREFS_MASK | MCG_C1_IRCLKEN_MASK;
+  /* 32.768KHz x FLL(1464) = 48MHz */
+  MCG->C4 = MCG_C4_DMX32_MASK | MCG_C4_DRST_DRS(1);
+  /* USB clock source: MCGPLLCLK/MCGFLLCLK */
+  //SIM->SOPT2 = SIM_SOPT2_USBSRC_MASK | SIM_SOPT2_TRACECLKSEL_MASK;
+
+  while((MCG->S & MCG_S_IREFST_MASK) == 0u) { }
+  while((MCG->S & 0x0Cu) != 0x00u) { }
+#endif
+}
+
+/* ----------------------------------------------------------------------------
+   -- SystemCoreClockUpdate()
+   ---------------------------------------------------------------------------- */
+
+void SystemCoreClockUpdate (void) {
+  uint32_t MCGOUTClock;                                                        /* Variable to store output clock frequency of the MCG module */
+  uint8_t Divider;
+
+  if ((MCG->C1 & MCG_C1_CLKS_MASK) == 0x0u) {
+    /* Output of FLL or PLL is selected */
+    if ((MCG->C6 & MCG_C6_PLLS_MASK) == 0x0u) {
+      /* FLL is selected */
+      if ((MCG->C1 & MCG_C1_IREFS_MASK) == 0x0u) {
+        /* External reference clock is selected */
+        if ((MCG->C7 & MCG_C7_OSCSEL_MASK) == 0x0u) {
+          MCGOUTClock = CPU_XTAL_CLK_HZ;                                       /* System oscillator drives MCG clock */
+        } else { /* (!((MCG->C7 & MCG_C7_OSCSEL_MASK) == 0x0u)) */
+          MCGOUTClock = CPU_XTAL32k_CLK_HZ;                                    /* RTC 32 kHz oscillator drives MCG clock */
+        } /* (!((MCG->C7 & MCG_C7_OSCSEL_MASK) == 0x0u)) */
+        Divider = (uint8_t)(1u << ((MCG->C1 & MCG_C1_FRDIV_MASK) >> MCG_C1_FRDIV_SHIFT));
+        MCGOUTClock = (MCGOUTClock / Divider);  /* Calculate the divided FLL reference clock */
+        if ((MCG->C2 & MCG_C2_RANGE0_MASK) != 0x0u) {
+          MCGOUTClock /= 32u;                                                  /* If high range is enabled, additional 32 divider is active */
+        } /* ((MCG->C2 & MCG_C2_RANGE0_MASK) != 0x0u) */
+      } else { /* (!((MCG->C1 & MCG_C1_IREFS_MASK) == 0x0u)) */
+        MCGOUTClock = CPU_INT_SLOW_CLK_HZ;                                     /* The slow internal reference clock is selected */
+      } /* (!((MCG->C1 & MCG_C1_IREFS_MASK) == 0x0u)) */
+      /* Select correct multiplier to calculate the MCG output clock  */
+      switch (MCG->C4 & (MCG_C4_DMX32_MASK | MCG_C4_DRST_DRS_MASK)) {
+        case 0x0u:
+          MCGOUTClock *= 640u;
+          break;
+        case 0x20u:
+          MCGOUTClock *= 1280u;
+          break;
+        case 0x40u:
+          MCGOUTClock *= 1920u;
+          break;
+        case 0x60u:
+          MCGOUTClock *= 2560u;
+          break;
+        case 0x80u:
+          MCGOUTClock *= 732u;
+          break;
+        case 0xA0u:
+          MCGOUTClock *= 1464u;
+          break;
+        case 0xC0u:
+          MCGOUTClock *= 2197u;
+          break;
+        case 0xE0u:
+          MCGOUTClock *= 2929u;
+          break;
+        default:
+          break;
+      }
+    } else { /* (!((MCG->C6 & MCG_C6_PLLS_MASK) == 0x0u)) */
+      /* PLL is selected */
+      Divider = (1u + (MCG->C5 & MCG_C5_PRDIV0_MASK));
+      MCGOUTClock = (uint32_t)(CPU_XTAL_CLK_HZ / Divider);                     /* Calculate the PLL reference clock */
+      Divider = ((MCG->C6 & MCG_C6_VDIV0_MASK) + 24u);
+      MCGOUTClock *= Divider;                       /* Calculate the MCG output clock */
+    } /* (!((MCG->C6 & MCG_C6_PLLS_MASK) == 0x0u)) */
+  } else if ((MCG->C1 & MCG_C1_CLKS_MASK) == 0x40u) {
+    /* Internal reference clock is selected */
+    if ((MCG->C2 & MCG_C2_IRCS_MASK) == 0x0u) {
+      MCGOUTClock = CPU_INT_SLOW_CLK_HZ;                                       /* Slow internal reference clock selected */
+    } else { /* (!((MCG->C2 & MCG_C2_IRCS_MASK) == 0x0u)) */
+      MCGOUTClock = CPU_INT_FAST_CLK_HZ / (1 << ((MCG->SC & MCG_SC_FCRDIV_MASK) >> MCG_SC_FCRDIV_SHIFT));  /* Fast internal reference clock selected */
+    } /* (!((MCG->C2 & MCG_C2_IRCS_MASK) == 0x0u)) */
+  } else if ((MCG->C1 & MCG_C1_CLKS_MASK) == 0x80u) {
+    /* External reference clock is selected */
+    if ((MCG->C7 & MCG_C7_OSCSEL_MASK) == 0x0u) {
+      MCGOUTClock = CPU_XTAL_CLK_HZ;                                           /* System oscillator drives MCG clock */
+    } else { /* (!((MCG->C7 & MCG_C7_OSCSEL_MASK) == 0x0u)) */
+      MCGOUTClock = CPU_XTAL32k_CLK_HZ;                                        /* RTC 32 kHz oscillator drives MCG clock */
+    } /* (!((MCG->C7 & MCG_C7_OSCSEL_MASK) == 0x0u)) */
+  } else { /* (!((MCG->C1 & MCG_C1_CLKS_MASK) == 0x80u)) */
+    /* Reserved value */
+    return;
+  } /* (!((MCG->C1 & MCG_C1_CLKS_MASK) == 0x80u)) */
+  SystemCoreClock = (MCGOUTClock / (1u + ((SIM->CLKDIV1 & SIM_CLKDIV1_OUTDIV1_MASK) >> SIM_CLKDIV1_OUTDIV1_SHIFT)));
+}