diff options
Diffstat (limited to 'tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_Freescale/TARGET_KLXX/TARGET_KL05Z/system_MKL05Z4.c')
| -rw-r--r-- | tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_Freescale/TARGET_KLXX/TARGET_KL05Z/system_MKL05Z4.c | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_Freescale/TARGET_KLXX/TARGET_KL05Z/system_MKL05Z4.c b/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_Freescale/TARGET_KLXX/TARGET_KL05Z/system_MKL05Z4.c new file mode 100644 index 0000000000..012d472a71 --- /dev/null +++ b/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_Freescale/TARGET_KLXX/TARGET_KL05Z/system_MKL05Z4.c @@ -0,0 +1,256 @@ +/* +** ################################################################### +** Processors: MKL05Z32FK4 +** MKL05Z32LC4 +** MKL05Z32VLF4 +** +** Compilers: ARM Compiler +** Freescale C/C++ for Embedded ARM +** GNU C Compiler +** IAR ANSI C/C++ Compiler for ARM +** +** Reference manual: KL05P48M48SF1RM, Rev.3, Sep 2012 +** Version: rev. 1.6, 2013-04-11 +** +** 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: 2013 Freescale, Inc. All Rights Reserved. +** +** http: www.freescale.com +** mail: support@freescale.com +** +** Revisions: +** - rev. 1.0 (2012-06-08) +** Initial version. +** - rev. 1.1 (2012-06-21) +** Update according to reference manual rev. 1. +** - rev. 1.2 (2012-08-01) +** Device type UARTLP changed to UART0. +** Missing PORTB_IRQn interrupt number definition added. +** - rev. 1.3 (2012-10-04) +** Update according to reference manual rev. 3. +** - rev. 1.4 (2012-11-22) +** MCG module - bit LOLS in MCG_S register renamed to LOLS0. +** NV registers - bit EZPORT_DIS in NV_FOPT register removed. +** - rev. 1.5 (2013-04-05) +** Changed start of doxygen comment. +** - rev. 1.6 (2013-04-11) +** SystemInit methods updated with predefined initialization sequence. +** +** ################################################################### +*/ + +/*! + * @file MKL05Z4 + * @version 1.6 + * @date 2013-04-11 + * @brief Device specific configuration file for MKL05Z4 (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 "MKL05Z4.h" + +#define DISABLE_WDOG 1 + +#define CLOCK_SETUP 1 +/* 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 = 20.97MHz + 1 ... Multipurpose Clock Generator (MCG) in FLL Engaged External (FEE) mode + Reference clock source for MCG module is an external crystal 32.768kHz + Core clock = 47.97MHz, BusClock = 23.98MHz + 2 ... Multipurpose Clock Generator (MCG) in FLL Bypassed Low Power Internal (BLPI) mode + Core clock/Bus clock derived directly from an fast internal 4MHz clock with no multiplication + Core clock = 4MHz, BusClock = 4MHz +*/ + +/*---------------------------------------------------------------------------- + Define clock source values + *----------------------------------------------------------------------------*/ +#if (CLOCK_SETUP == 0) + #define CPU_XTAL_CLK_HZ 32768u /* Value of the external 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 32768u /* Value of the external 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 47972352u /* Default System clock value */ +#elif (CLOCK_SETUP == 2) + #define CPU_XTAL_CLK_HZ 32768u /* Value of the external 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 4000000u /* Default System clock value */ +#endif /* (CLOCK_SETUP == 2) */ + + +/* ---------------------------------------------------------------------------- + -- Core clock + ---------------------------------------------------------------------------- */ + +uint32_t SystemCoreClock = DEFAULT_SYSTEM_CLOCK; + +/* ---------------------------------------------------------------------------- + -- SystemInit() + ---------------------------------------------------------------------------- */ + +void SystemInit (void) { +#if (DISABLE_WDOG) + /* Disable the WDOG module */ + /* SIM_COPC: COPT=0,COPCLKS=0,COPW=0 */ + SIM->COPC = (uint32_t)0x00u; +#endif /* (DISABLE_WDOG) */ +#if (CLOCK_SETUP == 0) + /* 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 */ + SIM->CLKDIV1 = (SIM_CLKDIV1_OUTDIV1(0x00) | SIM_CLKDIV1_OUTDIV4(0x01)); /* Update system prescalers */ + /* Switch to FEI Mode */ + /* MCG->C1: CLKS=0,FRDIV=0,IREFS=1,IRCLKEN=1,IREFSTEN=0 */ + MCG->C1 = MCG_C1_CLKS(0x00) | + MCG_C1_FRDIV(0x00) | + MCG_C1_IREFS_MASK | + MCG_C1_IRCLKEN_MASK; + /* MCG->C2: LOCRE0=0,??=0,RANGE0=0,HGO0=0,EREFS0=0,LP=0,IRCS=0 */ + MCG->C2 = MCG_C2_RANGE0(0x00); + /* MCG_C4: DMX32=0,DRST_DRS=1 */ + MCG->C4 = (uint8_t)((MCG->C4 & (uint8_t)~(uint8_t)( + MCG_C4_DMX32_MASK | + MCG_C4_DRST_DRS(0x02) + )) | (uint8_t)( + MCG_C4_DRST_DRS(0x01) + )); + /* OSC0->CR: ERCLKEN=1,??=0,EREFSTEN=0,??=0,SC2P=0,SC4P=0,SC8P=0,SC16P=0 */ + OSC0->CR = OSC_CR_ERCLKEN_MASK; + while((MCG->S & MCG_S_IREFST_MASK) == 0x00U) { /* 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->SCGC5: PORTA=1 */ + SIM->SCGC5 |= SIM_SCGC5_PORTA_MASK; /* Enable clock gate for ports to enable pin routing */ + /* 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 */ + SIM->CLKDIV1 = (SIM_CLKDIV1_OUTDIV1(0x00) | SIM_CLKDIV1_OUTDIV4(0x01)); /* Update system prescalers */ + /* PORTA->PCR[3]: ISF=0,MUX=0 */ + PORTA->PCR[3] &= (uint32_t)~(uint32_t)((PORT_PCR_ISF_MASK | PORT_PCR_MUX(0x07))); + /* PORTA->PCR[4]: ISF=0,MUX=0 */ + PORTA->PCR[4] &= (uint32_t)~(uint32_t)((PORT_PCR_ISF_MASK | PORT_PCR_MUX(0x07))); + /* Switch to FEE Mode */ + /* MCG->C2: LOCRE0=0,??=0,RANGE0=0,HGO0=0,EREFS0=1,LP=0,IRCS=0 */ + MCG->C2 = (MCG_C2_RANGE0(0x00) | MCG_C2_EREFS0_MASK); + /* OSC0->CR: ERCLKEN=1,??=0,EREFSTEN=0,??=0,SC2P=0,SC4P=1,SC8P=1,SC16P=0 */ + OSC0->CR = OSC_CR_ERCLKEN_MASK | OSC_CR_SC8P_MASK | OSC_CR_SC4P_MASK; + /* MCG->C1: CLKS=0,FRDIV=0,IREFS=0,IRCLKEN=1,IREFSTEN=0 */ + MCG->C1 = (MCG_C1_CLKS(0x00) | MCG_C1_FRDIV(0x00) | MCG_C1_IRCLKEN_MASK); + /* MCG->C4: DMX32=1,DRST_DRS=1 */ + MCG->C4 = (uint8_t)((MCG->C4 & (uint8_t)~(uint8_t)( + MCG_C4_DRST_DRS(0x02) + )) | (uint8_t)( + MCG_C4_DMX32_MASK | + MCG_C4_DRST_DRS(0x01) + )); + while((MCG->S & MCG_S_IREFST_MASK) != 0x00U) { /* Check that the source of the FLL reference clock is the external reference clock. */ + } + while((MCG->S & 0x0CU) != 0x00U) { /* Wait until output of the FLL is selected */ + } +#elif (CLOCK_SETUP == 2) + /* 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 */ + SIM->CLKDIV1 = (SIM_CLKDIV1_OUTDIV1(0x00) | SIM_CLKDIV1_OUTDIV4(0x00)); /* Update system prescalers */ + /* MCG->SC: FCRDIV=0 */ + MCG->SC &= (uint8_t)~(uint8_t)(MCG_SC_FCRDIV(0x07)); + /* Switch to FBI Mode */ + /* MCG->C1: CLKS=1,FRDIV=0,IREFS=1,IRCLKEN=1,IREFSTEN=0 */ + MCG->C1 = MCG_C1_CLKS(0x01) | + MCG_C1_FRDIV(0x00) | + MCG_C1_IREFS_MASK | + MCG_C1_IRCLKEN_MASK; + /* MCG->C2: LOCRE0=0,??=0,RANGE0=0,HGO0=0,EREFS0=0,LP=0,IRCS=1 */ + MCG->C2 = (MCG_C2_RANGE0(0x00) | MCG_C2_IRCS_MASK); + /* MCG->C4: DMX32=0,DRST_DRS=0 */ + MCG->C4 &= (uint8_t)~(uint8_t)((MCG_C4_DMX32_MASK | MCG_C4_DRST_DRS(0x03))); + /* OSC0->CR: ERCLKEN=1,??=0,EREFSTEN=0,??=0,SC2P=0,SC4P=0,SC8P=0,SC16P=0 */ + OSC0->CR = OSC_CR_ERCLKEN_MASK; + while((MCG->S & MCG_S_IREFST_MASK) == 0x00U) { /* Check that the source of the FLL reference clock is the internal reference clock. */ + } + while((MCG->S & 0x0CU) != 0x04U) { /* Wait until internal reference clock is selected as MCG output */ + } + /* Switch to BLPI Mode */ + /* MCG->C2: LOCRE0=0,??=0,RANGE0=0,HGO0=0,EREFS0=0,LP=1,IRCS=1 */ + MCG->C2 = (MCG_C2_RANGE0(0x00) | MCG_C2_LP_MASK | MCG_C2_IRCS_MASK); + while((MCG->S & MCG_S_IREFST_MASK) == 0x00U) { /* Check that the source of the FLL reference clock is the internal reference clock. */ + } + while((MCG->S & MCG_S_IRCST_MASK) == 0x00U) { /* Check that the fast external reference clock is selected. */ + } +#endif /* (CLOCK_SETUP == 2) */ +} + +/* ---------------------------------------------------------------------------- + -- 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 is selected */ + if ((MCG->C1 & MCG_C1_IREFS_MASK) == 0x0u) { + /* External reference clock is selected */ + MCGOUTClock = CPU_XTAL_CLK_HZ; /* System oscillator drives MCG clock */ + Divider = (uint8_t)(1u << ((MCG->C1 & MCG_C1_FRDIV_MASK) >> MCG_C1_FRDIV_SHIFT)); + MCGOUTClock = (MCGOUTClock / Divider); /* Calculate the divided FLL reference clock */ + } 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 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 */ + MCGOUTClock = CPU_XTAL_CLK_HZ; /* System oscillator drives MCG clock */ + } 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))); +} |