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Merge pull request #176 from 0xc0170/dev_kl05_cmsis_clock
CMSIS system for KL05Z update
2 parents 111cad5 + cd46fa2 commit 0007856

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‎libraries/mbed/targets/cmsis/TARGET_Freescale/TARGET_KLXX/TARGET_KL05Z/system_MKL05Z4.c‎

Lines changed: 237 additions & 103 deletions
Original file line numberDiff line numberDiff line change
@@ -1,122 +1,256 @@
1+
/*
2+
** ###################################################################
3+
** Processors: MKL05Z32FK4
4+
** MKL05Z32LC4
5+
** MKL05Z32VLF4
6+
**
7+
** Compilers: ARM Compiler
8+
** Freescale C/C++ for Embedded ARM
9+
** GNU C Compiler
10+
** IAR ANSI C/C++ Compiler for ARM
11+
**
12+
** Reference manual: KL05P48M48SF1RM, Rev.3, Sep 2012
13+
** Version: rev. 1.6, 2013-04-11
14+
**
15+
** Abstract:
16+
** Provides a system configuration function and a global variable that
17+
** contains the system frequency. It configures the device and initializes
18+
** the oscillator (PLL) that is part of the microcontroller device.
19+
**
20+
** Copyright: 2013 Freescale, Inc. All Rights Reserved.
21+
**
22+
** http: www.freescale.com
23+
** mail: support@freescale.com
24+
**
25+
** Revisions:
26+
** - rev. 1.0 (2012-06-08)
27+
** Initial version.
28+
** - rev. 1.1 (2012-06-21)
29+
** Update according to reference manual rev. 1.
30+
** - rev. 1.2 (2012-08-01)
31+
** Device type UARTLP changed to UART0.
32+
** Missing PORTB_IRQn interrupt number definition added.
33+
** - rev. 1.3 (2012-10-04)
34+
** Update according to reference manual rev. 3.
35+
** - rev. 1.4 (2012-11-22)
36+
** MCG module - bit LOLS in MCG_S register renamed to LOLS0.
37+
** NV registers - bit EZPORT_DIS in NV_FOPT register removed.
38+
** - rev. 1.5 (2013-04-05)
39+
** Changed start of doxygen comment.
40+
** - rev. 1.6 (2013-04-11)
41+
** SystemInit methods updated with predefined initialization sequence.
42+
**
43+
** ###################################################################
44+
*/
45+
46+
/*!
47+
* @file MKL05Z4
48+
* @version 1.6
49+
* @date 2013-04-11
50+
* @brief Device specific configuration file for MKL05Z4 (implementation file)
51+
*
52+
* Provides a system configuration function and a global variable that contains
53+
* the system frequency. It configures the device and initializes the oscillator
54+
* (PLL) that is part of the microcontroller device.
55+
*/
56+
157
#include <stdint.h>
258
#include "MKL05Z4.h"
359

4-
#define DISABLE_WDOG 1
60+
#define DISABLE_WDOG 1
561

62+
#define CLOCK_SETUP 1
663
/* Predefined clock setups
7-
Multipurpose Clock Generator (MCG) in FLL Engaged Internal (FEI) mode
64+
0 ... Multipurpose Clock Generator (MCG) in FLL Engaged Internal (FEI) mode
865
Reference clock source for MCG module is the slow internal clock source 32.768kHz
9-
Core clock = 47.97MHz, BusClock = 23.48MHz
66+
Core clock = 41.94MHz, BusClock = 20.97MHz
67+
1 ... Multipurpose Clock Generator (MCG) in FLL Engaged External (FEE) mode
68+
Reference clock source for MCG module is an external crystal 32.768kHz
69+
Core clock = 47.97MHz, BusClock = 23.98MHz
70+
2 ... Multipurpose Clock Generator (MCG) in FLL Bypassed Low Power Internal (BLPI) mode
71+
Core clock/Bus clock derived directly from an fast internal 4MHz clock with no multiplication
72+
Core clock = 4MHz, BusClock = 4MHz
1073
*/
1174

12-
#define CPU_XTAL_CLK_HZ 32768u /* Value of the external crystal or oscillator clock frequency in Hz */
13-
#define CPU_INT_SLOW_CLK_HZ 32768u /* Value of the slow internal oscillator clock frequency in Hz */
14-
#define CPU_INT_FAST_CLK_HZ 4000000u /* Value of the fast internal oscillator clock frequency in Hz */
15-
#define DEFAULT_SYSTEM_CLOCK 47972352u /* Default System clock value */
75+
/*----------------------------------------------------------------------------
76+
Define clock source values
77+
*----------------------------------------------------------------------------*/
78+
#if (CLOCK_SETUP == 0)
79+
#define CPU_XTAL_CLK_HZ 32768u /* Value of the external crystal or oscillator clock frequency in Hz */
80+
#define CPU_INT_SLOW_CLK_HZ 32768u /* Value of the slow internal oscillator clock frequency in Hz */
81+
#define CPU_INT_FAST_CLK_HZ 4000000u /* Value of the fast internal oscillator clock frequency in Hz */
82+
#define DEFAULT_SYSTEM_CLOCK 41943040u /* Default System clock value */
83+
#elif (CLOCK_SETUP == 1)
84+
#define CPU_XTAL_CLK_HZ 32768u /* Value of the external crystal or oscillator clock frequency in Hz */
85+
#define CPU_INT_SLOW_CLK_HZ 32768u /* Value of the slow internal oscillator clock frequency in Hz */
86+
#define CPU_INT_FAST_CLK_HZ 4000000u /* Value of the fast internal oscillator clock frequency in Hz */
87+
#define DEFAULT_SYSTEM_CLOCK 47972352u /* Default System clock value */
88+
#elif (CLOCK_SETUP == 2)
89+
#define CPU_XTAL_CLK_HZ 32768u /* Value of the external crystal or oscillator clock frequency in Hz */
90+
#define CPU_INT_SLOW_CLK_HZ 32768u /* Value of the slow internal oscillator clock frequency in Hz */
91+
#define CPU_INT_FAST_CLK_HZ 4000000u /* Value of the fast internal oscillator clock frequency in Hz */
92+
#define DEFAULT_SYSTEM_CLOCK 4000000u /* Default System clock value */
93+
#endif /* (CLOCK_SETUP == 2) */
94+
95+
96+
/* ----------------------------------------------------------------------------
97+
-- Core clock
98+
---------------------------------------------------------------------------- */
1699

17100
uint32_t SystemCoreClock = DEFAULT_SYSTEM_CLOCK;
18101

19-
void SystemInit(void) {
102+
/* ----------------------------------------------------------------------------
103+
-- SystemInit()
104+
---------------------------------------------------------------------------- */
105+
106+
void SystemInit (void) {
20107
#if (DISABLE_WDOG)
21-
/* Disable the WDOG module */
22-
/* SIM_COPC: COPT=0,COPCLKS=0,COPW=0 */
23-
SIM->COPC = (uint32_t)0x00u;
108+
/* Disable the WDOG module */
109+
/* SIM_COPC: COPT=0,COPCLKS=0,COPW=0 */
110+
SIM->COPC = (uint32_t)0x00u;
24111
#endif /* (DISABLE_WDOG) */
25-
26-
SIM->SCGC5 |= (SIM_SCGC5_PORTB_MASK | SIM_SCGC5_PORTA_MASK); /* Enable clock gate for ports to enable pin routing */
27-
/* SIM_SCGC5: LPTMR=1 */
28-
SIM->SCGC5 |= SIM_SCGC5_LPTMR_MASK;
29-
/* SIM_CLKDIV1: OUTDIV1=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,OUTDIV4=1,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0 */
30-
SIM->CLKDIV1 = (SIM_CLKDIV1_OUTDIV1(0x00) | SIM_CLKDIV1_OUTDIV4(0x01)); /* Update system prescalers */
31-
/* SIM_SOPT1: OSC32KSEL=0 */
32-
SIM->SOPT1 &= (uint32_t)~(uint32_t)(SIM_SOPT1_OSC32KSEL(0x03)); /* System oscillator drives 32 kHz clock for various peripherals */
33-
/* SIM_SOPT2: TPMSRC=2 */
34-
SIM->SOPT2 = (uint32_t)((SIM->SOPT2 & (uint32_t)~(uint32_t)(SIM_SOPT2_TPMSRC(0x01))) |
35-
(uint32_t)(SIM_SOPT2_TPMSRC(0x02))); /* Set the TPM clock */
36-
/* PORTA_PCR3: ISF=0,MUX=0 */
37-
PORTA->PCR[3] &= (uint32_t)~(uint32_t)((PORT_PCR_ISF_MASK | PORT_PCR_MUX(0x07)));
38-
/* MCG_SC: FCRDIV=1 */
39-
MCG->SC = (uint8_t)((MCG->SC & (uint8_t)~(uint8_t)(MCG_SC_FCRDIV(0x06))) |
40-
(uint8_t)(MCG_SC_FCRDIV(0x01)));
41-
/* Switch to FEI Mode */
42-
/* MCG_C1: CLKS=0,FRDIV=0,IREFS=1,IRCLKEN=1,IREFSTEN=0 */
43-
MCG->C1 = MCG_C1_CLKS(0x00) | MCG_C1_FRDIV(0x00) |
44-
MCG_C1_IREFS_MASK | MCG_C1_IRCLKEN_MASK;
45-
/* MCG_C2: LOCRE0=0,??=0,RANGE0=0,HGO0=0,EREFS0=0,LP=0,IRCS=1 */
46-
MCG->C2 = (MCG_C2_RANGE0(0x00) | MCG_C2_IRCS_MASK);
47-
/* MCG_C4: DMX32=1,DRST_DRS=1 */
48-
MCG->C4 = (uint8_t)((MCG->C4 & (uint8_t)~(uint8_t)(MCG_C4_DRST_DRS(0x02))) |
49-
(uint8_t)(MCG_C4_DMX32_MASK | MCG_C4_DRST_DRS(0x01)));
50-
/* OSC0_CR: ERCLKEN=1,??=0,EREFSTEN=0,??=0,SC2P=0,SC4P=0,SC8P=0,SC16P=0 */
51-
OSC0->CR = OSC_CR_ERCLKEN_MASK;
52-
while((MCG->S & MCG_S_IREFST_MASK) == 0x00U) { /* Check that the source of the FLL reference clock is the internal reference clock. */
53-
}
54-
while((MCG->S & 0x0CU) != 0x00U) { /* Wait until output of the FLL is selected */
55-
}
112+
#if (CLOCK_SETUP == 0)
113+
/* SIM->CLKDIV1: OUTDIV1=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,OUTDIV4=1,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0 */
114+
SIM->CLKDIV1 = (SIM_CLKDIV1_OUTDIV1(0x00) | SIM_CLKDIV1_OUTDIV4(0x01)); /* Update system prescalers */
115+
/* Switch to FEI Mode */
116+
/* MCG->C1: CLKS=0,FRDIV=0,IREFS=1,IRCLKEN=1,IREFSTEN=0 */
117+
MCG->C1 = MCG_C1_CLKS(0x00) |
118+
MCG_C1_FRDIV(0x00) |
119+
MCG_C1_IREFS_MASK |
120+
MCG_C1_IRCLKEN_MASK;
121+
/* MCG->C2: LOCRE0=0,??=0,RANGE0=0,HGO0=0,EREFS0=0,LP=0,IRCS=0 */
122+
MCG->C2 = MCG_C2_RANGE0(0x00);
123+
/* MCG_C4: DMX32=0,DRST_DRS=1 */
124+
MCG->C4 = (uint8_t)((MCG->C4 & (uint8_t)~(uint8_t)(
125+
MCG_C4_DMX32_MASK |
126+
MCG_C4_DRST_DRS(0x02)
127+
)) | (uint8_t)(
128+
MCG_C4_DRST_DRS(0x01)
129+
));
130+
/* OSC0->CR: ERCLKEN=1,??=0,EREFSTEN=0,??=0,SC2P=0,SC4P=0,SC8P=0,SC16P=0 */
131+
OSC0->CR = OSC_CR_ERCLKEN_MASK;
132+
while((MCG->S & MCG_S_IREFST_MASK) == 0x00U) { /* Check that the source of the FLL reference clock is the internal reference clock. */
133+
}
134+
while((MCG->S & 0x0CU) != 0x00U) { /* Wait until output of the FLL is selected */
135+
}
136+
#elif (CLOCK_SETUP == 1)
137+
/* SIM->SCGC5: PORTA=1 */
138+
SIM->SCGC5 |= SIM_SCGC5_PORTA_MASK; /* Enable clock gate for ports to enable pin routing */
139+
/* SIM->CLKDIV1: OUTDIV1=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,OUTDIV4=1,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0 */
140+
SIM->CLKDIV1 = (SIM_CLKDIV1_OUTDIV1(0x00) | SIM_CLKDIV1_OUTDIV4(0x01)); /* Update system prescalers */
141+
/* PORTA->PCR[3]: ISF=0,MUX=0 */
142+
PORTA->PCR[3] &= (uint32_t)~(uint32_t)((PORT_PCR_ISF_MASK | PORT_PCR_MUX(0x07)));
143+
/* PORTA->PCR[4]: ISF=0,MUX=0 */
144+
PORTA->PCR[4] &= (uint32_t)~(uint32_t)((PORT_PCR_ISF_MASK | PORT_PCR_MUX(0x07)));
145+
/* Switch to FEE Mode */
146+
/* MCG->C2: LOCRE0=0,??=0,RANGE0=0,HGO0=0,EREFS0=1,LP=0,IRCS=0 */
147+
MCG->C2 = (MCG_C2_RANGE0(0x00) | MCG_C2_EREFS0_MASK);
148+
/* OSC0->CR: ERCLKEN=1,??=0,EREFSTEN=0,??=0,SC2P=0,SC4P=0,SC8P=0,SC16P=0 */
149+
OSC0->CR = OSC_CR_ERCLKEN_MASK;
150+
/* MCG->C1: CLKS=0,FRDIV=0,IREFS=0,IRCLKEN=1,IREFSTEN=0 */
151+
MCG->C1 = (MCG_C1_CLKS(0x00) | MCG_C1_FRDIV(0x00) | MCG_C1_IRCLKEN_MASK);
152+
/* MCG->C4: DMX32=1,DRST_DRS=1 */
153+
MCG->C4 = (uint8_t)((MCG->C4 & (uint8_t)~(uint8_t)(
154+
MCG_C4_DRST_DRS(0x02)
155+
)) | (uint8_t)(
156+
MCG_C4_DMX32_MASK |
157+
MCG_C4_DRST_DRS(0x01)
158+
));
159+
while((MCG->S & MCG_S_IREFST_MASK) != 0x00U) { /* Check that the source of the FLL reference clock is the external reference clock. */
160+
}
161+
while((MCG->S & 0x0CU) != 0x00U) { /* Wait until output of the FLL is selected */
162+
}
163+
#elif (CLOCK_SETUP == 2)
164+
/* SIM->CLKDIV1: OUTDIV1=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,OUTDIV4=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0 */
165+
SIM->CLKDIV1 = (SIM_CLKDIV1_OUTDIV1(0x00) | SIM_CLKDIV1_OUTDIV4(0x00)); /* Update system prescalers */
166+
/* MCG->SC: FCRDIV=0 */
167+
MCG->SC &= (uint8_t)~(uint8_t)(MCG_SC_FCRDIV(0x07));
168+
/* Switch to FBI Mode */
169+
/* MCG->C1: CLKS=1,FRDIV=0,IREFS=1,IRCLKEN=1,IREFSTEN=0 */
170+
MCG->C1 = MCG_C1_CLKS(0x01) |
171+
MCG_C1_FRDIV(0x00) |
172+
MCG_C1_IREFS_MASK |
173+
MCG_C1_IRCLKEN_MASK;
174+
/* MCG->C2: LOCRE0=0,??=0,RANGE0=0,HGO0=0,EREFS0=0,LP=0,IRCS=1 */
175+
MCG->C2 = (MCG_C2_RANGE0(0x00) | MCG_C2_IRCS_MASK);
176+
/* MCG->C4: DMX32=0,DRST_DRS=0 */
177+
MCG->C4 &= (uint8_t)~(uint8_t)((MCG_C4_DMX32_MASK | MCG_C4_DRST_DRS(0x03)));
178+
/* OSC0->CR: ERCLKEN=1,??=0,EREFSTEN=0,??=0,SC2P=0,SC4P=0,SC8P=0,SC16P=0 */
179+
OSC0->CR = OSC_CR_ERCLKEN_MASK;
180+
while((MCG->S & MCG_S_IREFST_MASK) == 0x00U) { /* Check that the source of the FLL reference clock is the internal reference clock. */
181+
}
182+
while((MCG->S & 0x0CU) != 0x04U) { /* Wait until internal reference clock is selected as MCG output */
183+
}
184+
/* Switch to BLPI Mode */
185+
/* MCG->C2: LOCRE0=0,??=0,RANGE0=0,HGO0=0,EREFS0=0,LP=1,IRCS=1 */
186+
MCG->C2 = (MCG_C2_RANGE0(0x00) | MCG_C2_LP_MASK | MCG_C2_IRCS_MASK);
187+
while((MCG->S & MCG_S_IREFST_MASK) == 0x00U) { /* Check that the source of the FLL reference clock is the internal reference clock. */
188+
}
189+
while((MCG->S & MCG_S_IRCST_MASK) == 0x00U) { /* Check that the fast external reference clock is selected. */
190+
}
191+
#endif /* (CLOCK_SETUP == 2) */
56192
}
57193

58-
void SystemCoreClockUpdate(void) {
59-
uint32_t MCGOUTClock;
60-
uint8_t Divider;
194+
/* ----------------------------------------------------------------------------
195+
-- SystemCoreClockUpdate()
196+
---------------------------------------------------------------------------- */
61197

62-
if ((MCG->C1 & MCG_C1_CLKS_MASK) == 0x0u) {
63-
/* FLL is selected */
64-
if ((MCG->C1 & MCG_C1_IREFS_MASK) == 0x0u) {
65-
/* External reference clock is selected */
66-
MCGOUTClock = CPU_XTAL_CLK_HZ; /* System oscillator drives MCG clock */
67-
Divider = (uint8_t)(1u << ((MCG->C1 & MCG_C1_FRDIV_MASK) >> MCG_C1_FRDIV_SHIFT));
68-
MCGOUTClock = (MCGOUTClock / Divider); /* Calculate the divided FLL reference clock */
69-
if ((MCG->C2 & MCG_C2_RANGE0_MASK) != 0x0u) {
70-
MCGOUTClock /= 32u; /* If high range is enabled, additional 32 divider is active */
71-
}
72-
} else {
73-
MCGOUTClock = CPU_INT_SLOW_CLK_HZ; /* The slow internal reference clock is selected */
74-
}
198+
void SystemCoreClockUpdate (void) {
199+
uint32_t MCGOUTClock; /* Variable to store output clock frequency of the MCG module */
200+
uint8_t Divider;
75201

76-
/* Select correct multiplier to calculate the MCG output clock */
77-
switch (MCG->C4 & (MCG_C4_DMX32_MASK | MCG_C4_DRST_DRS_MASK)) {
78-
case 0x0u:
79-
MCGOUTClock *= 640u;
80-
break;
81-
case 0x20u:
82-
MCGOUTClock *= 1280u;
83-
break;
84-
case 0x40u:
85-
MCGOUTClock *= 1920u;
86-
break;
87-
case 0x60u:
88-
MCGOUTClock *= 2560u;
89-
break;
90-
case 0x80u:
91-
MCGOUTClock *= 732u;
92-
break;
93-
case 0xA0u:
94-
MCGOUTClock *= 1464u;
95-
break;
96-
case 0xC0u:
97-
MCGOUTClock *= 2197u;
98-
break;
99-
case 0xE0u:
100-
MCGOUTClock *= 2929u;
101-
break;
102-
default:
103-
break;
104-
}
105-
} else if ((MCG->C1 & MCG_C1_CLKS_MASK) == 0x40u) {
106-
/* Internal reference clock is selected */
107-
if ((MCG->C2 & MCG_C2_IRCS_MASK) == 0x0u) {
108-
MCGOUTClock = CPU_INT_SLOW_CLK_HZ; /* Slow internal reference clock selected */
109-
} else {
110-
MCGOUTClock = CPU_INT_FAST_CLK_HZ / (1 << ((MCG->SC & MCG_SC_FCRDIV_MASK) >> MCG_SC_FCRDIV_SHIFT)); /* Fast internal reference clock selected */
111-
}
112-
} else if ((MCG->C1 & MCG_C1_CLKS_MASK) == 0x80u) {
113-
/* External reference clock is selected */
114-
MCGOUTClock = CPU_XTAL_CLK_HZ; /* System oscillator drives MCG clock */
115-
} else {
116-
/* Reserved value */
117-
return;
202+
if ((MCG->C1 & MCG_C1_CLKS_MASK) == 0x0u) {
203+
/* Output of FLL is selected */
204+
if ((MCG->C1 & MCG_C1_IREFS_MASK) == 0x0u) {
205+
/* External reference clock is selected */
206+
MCGOUTClock = CPU_XTAL_CLK_HZ; /* System oscillator drives MCG clock */
207+
Divider = (uint8_t)(1u << ((MCG->C1 & MCG_C1_FRDIV_MASK) >> MCG_C1_FRDIV_SHIFT));
208+
MCGOUTClock = (MCGOUTClock / Divider); /* Calculate the divided FLL reference clock */
209+
} else { /* (!((MCG->C1 & MCG_C1_IREFS_MASK) == 0x0u)) */
210+
MCGOUTClock = CPU_INT_SLOW_CLK_HZ; /* The slow internal reference clock is selected */
211+
} /* (!((MCG->C1 & MCG_C1_IREFS_MASK) == 0x0u)) */
212+
/* Select correct multiplier to calculate the MCG output clock */
213+
switch (MCG->C4 & (MCG_C4_DMX32_MASK | MCG_C4_DRST_DRS_MASK)) {
214+
case 0x0u:
215+
MCGOUTClock *= 640u;
216+
break;
217+
case 0x20u:
218+
MCGOUTClock *= 1280u;
219+
break;
220+
case 0x40u:
221+
MCGOUTClock *= 1920u;
222+
break;
223+
case 0x60u:
224+
MCGOUTClock *= 2560u;
225+
break;
226+
case 0x80u:
227+
MCGOUTClock *= 732u;
228+
break;
229+
case 0xA0u:
230+
MCGOUTClock *= 1464u;
231+
break;
232+
case 0xC0u:
233+
MCGOUTClock *= 2197u;
234+
break;
235+
case 0xE0u:
236+
MCGOUTClock *= 2929u;
237+
break;
238+
default:
239+
break;
118240
}
119-
120-
SystemCoreClock = (MCGOUTClock / (1u + ((SIM->CLKDIV1 & SIM_CLKDIV1_OUTDIV1_MASK) >> SIM_CLKDIV1_OUTDIV1_SHIFT)));
121-
241+
} else if ((MCG->C1 & MCG_C1_CLKS_MASK) == 0x40u) {
242+
/* Internal reference clock is selected */
243+
if ((MCG->C2 & MCG_C2_IRCS_MASK) == 0x0u) {
244+
MCGOUTClock = CPU_INT_SLOW_CLK_HZ; /* Slow internal reference clock selected */
245+
} else { /* (!((MCG->C2 & MCG_C2_IRCS_MASK) == 0x0u)) */
246+
MCGOUTClock = CPU_INT_FAST_CLK_HZ / (1 << ((MCG->SC & MCG_SC_FCRDIV_MASK) >> MCG_SC_FCRDIV_SHIFT)); /* Fast internal reference clock selected */
247+
} /* (!((MCG->C2 & MCG_C2_IRCS_MASK) == 0x0u)) */
248+
} else if ((MCG->C1 & MCG_C1_CLKS_MASK) == 0x80u) {
249+
/* External reference clock is selected */
250+
MCGOUTClock = CPU_XTAL_CLK_HZ; /* System oscillator drives MCG clock */
251+
} else { /* (!((MCG->C1 & MCG_C1_CLKS_MASK) == 0x80u)) */
252+
/* Reserved value */
253+
return;
254+
} /* (!((MCG->C1 & MCG_C1_CLKS_MASK) == 0x80u)) */
255+
SystemCoreClock = (MCGOUTClock / (1u + ((SIM->CLKDIV1 & SIM_CLKDIV1_OUTDIV1_MASK) >> SIM_CLKDIV1_OUTDIV1_SHIFT)));
122256
}

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