Clock Driver

Overview

The MCUXpresso SDK provides APIs for MCUXpresso SDK devices' clock operation.

The clock driver supports:

• Clock generator (PLL, FLL, and so on) configuration
• Clock mux and divider configuration
• Getting clock frequency

Files
file	fsl_clock.h

Macros
#define	SRAM_CLOCKS
	Clock ip name array for SRAM. More...
#define	FLASH_CLOCKS
	Clock ip name array for FLASH. More...
#define	IOCON_CLOCKS
	Clock ip name array for IOCON. More...
#define	GPIO_CLOCKS
	Clock ip name array for GPIO. More...
#define	WDT_CLOCKS
	Clock ip name array for WDT. More...
#define	I2C_CLOCKS
	Clock ip name array for I2C. More...
#define	SPISSP_CLOCKS
	Clock ip name array for SPISSP. More...
#define	CTIMER_CLOCKS
	Clock ip name array for CTIMER. More...
#define	TSEN_CLOCKS
	Clock ip name array for TSEN. More...
#define	EEPROM_CLOCKS
	Clock ip name array for EEPROM. More...
#define	CLK_GATE_DEFINE(reg, value)   ((((reg)&0xFFU) << 24U) | ((value)&0xFFFFFFU))
	Internal used Clock definition only. More...

Enumerations
enum	clock_ip_name_t
	Clock gate name used for CLOCK_EnableClock/CLOCK_DisableClock. More...
enum	clock_name_t {   kCLOCK_SysClk,   kCLOCK_Sfro,   kCLOCK_Tfro }
	Clock name used to get clock frequency. More...
enum	clock_select_t
	Clock Mux Switches CLK_MUX_DEFINE(reg, mux) reg is used to define the mux register mux is used to define the mux value. More...
enum	clock_divider_t
	Clock divider.
enum	clock_SysClkfrequency_t
	System clock frequency.

Driver version
#define	FSL_CLOCK_DRIVER_VERSION   (MAKE_VERSION(2, 0, 4))
	CLOCK driver version 2.0.4. More...

Clock gate, mux, and divider.
static void	CLOCKOUT_Enable (bool value)
static void	CLOCK_EnableClock (clock_ip_name_t clk)
static void	CLOCK_DisableClock (clock_ip_name_t clk)
static void	CLOCK_UpdateWdtClk (void)
static void	CLOCK_Select (clock_select_t sel)
static void	CLOCK_SetClkDivider (clock_divider_t name, uint32_t value)
static uint32_t	CLOCK_GetClkDivider (clock_divider_t name)
static void	CLOCK_SetSysClkDiv (clock_SysClkfrequency_t name)

Get frequency
static uint32_t	CLOCK_GetSysClkFreq (void)
	Return Frequency of system clock. More...
uint32_t	CLOCK_GetClockOutClkFreq (void)
	Return Frequency of ClockOut. More...
uint32_t	CLOCK_GetFreq (clock_name_t clockName)
	Return Frequency of selected clock. More...
void	CLOCK_WdtClkSelect (bool sel)
	enable wdt clock Update More...
static uint32_t	CLOCK_GetSysclktrim (void)
static uint32_t	CLOCK_GetTmrclktrim (void)

Macro Definition Documentation

#define FSL_CLOCK_DRIVER_VERSION   (MAKE_VERSION(2, 0, 4))

#define SRAM_CLOCKS

Value:

{               \
        kCLOCK_Ram  \
    }

#define FLASH_CLOCKS

Value:

{                              \
        kCLOCK_Flashreg_Flasharray \
    }

#define IOCON_CLOCKS

Value:

{                \
        kCLOCK_Iocon \
    }

#define GPIO_CLOCKS

Value:

{               \
        kCLOCK_Gpio \
    }

#define WDT_CLOCKS

Value:

{              \
        kCLOCK_Wdt \
    }

#define I2C_CLOCKS

Value:

{              \
        kCLOCK_I2c \
    }

#define SPISSP_CLOCKS

Value:

{                 \
        kCLOCK_Spissp \
    }

#define CTIMER_CLOCKS

Value:

{                              \
        kCLOCK_Ct16b, kCLOCK_Ct32b \
    }

#define TSEN_CLOCKS

Value:

{               \
        kCLOCK_Tsen \
    }

#define EEPROM_CLOCKS

Value:

{                        \
        kCLOCK_Eepeg_Eearray \
    }

#define CLK_GATE_DEFINE	(		reg,
			value
	)		((((reg)&0xFFU) << 24U) | ((value)&0xFFFFFFU))

Enumeration Type Documentation

enum clock_ip_name_t

enum clock_name_t

Enumerator
kCLOCK_SysClk	Cpu/AHB/AHB matrix/Memories,etc.
kCLOCK_Sfro	System FRO.
kCLOCK_Tfro	Timer FRO.

enum clock_select_t

Function Documentation

static uint32_t CLOCK_GetSysClkFreq ( void  )

inlinestatic

Returns

Frequency of system clock.

uint32_t CLOCK_GetClockOutClkFreq

(

void

)

Returns

Frequency of ClockOut

uint32_t CLOCK_GetFreq

(

clock_name_t

clockName

)

Returns

Frequency of selected clock

void CLOCK_WdtClkSelect

(

bool

sel

)

Parameters

sel,:

1=update 0=no update

Returns

Nothing