clock_config.c File Reference

#include "fsl_power.h"
#include "fsl_clock.h"
#include "clock_config.h"

Include dependency graph for clock_config.c:

Go to the source code of this file.

Functions
void	BOARD_BootClockFRO12M (void)
	This function executes configuration of clocks. More...
void	BOARD_BootClockFROHF48M (void)
	This function executes configuration of clocks. More...
void	BOARD_BootClockFROHF96M (void)
	This function executes configuration of clocks. More...

Variables
uint32_t	SystemCoreClock

Function Documentation

BOARD_BootClockFRO12M()

void BOARD_BootClockFRO12M

(

void

)

This function executes configuration of clocks.

< Set up the clock sources

< Set up FRO

< Ensure FRO is on

< Switch to FRO 12MHz first to ensure we can change voltage without accidentally being below the voltage for current speed

< Set up FRO to the 12 MHz, just for sure

< Set voltage for the one of the fastest clock outputs: System clock output

< Set FLASH wait states for core

< Set up dividers

< Set AHBCLKDIV divider to value 1

< Set up clock selectors - Attach clocks to the peripheries

< Switch MAIN_CLK to FRO12M

< Set SystemCoreClock variable.

Definition at line 63 of file clock_config.c.

BOARD_BootClockFROHF48M()

void BOARD_BootClockFROHF48M

(

void

)

This function executes configuration of clocks.

< Set up the clock sources

< Set up FRO

< Ensure FRO is on

< Switch to FRO 12MHz first to ensure we can change voltage without accidentally being below the voltage for current speed

< Set voltage for the one of the fastest clock outputs: System clock output

< Set FLASH wait states for core

< Set up high frequency FRO output to selected frequency

< Set up dividers

< Set AHBCLKDIV divider to value 1

< Set up clock selectors - Attach clocks to the peripheries

< Switch MAIN_CLK to FRO_HF

< Set SystemCoreClock variable.

Definition at line 101 of file clock_config.c.

References BOARD_BOOTCLOCKFROHF48M_CORE_CLOCK, and SystemCoreClock.

BOARD_BootClockFROHF96M()

void BOARD_BootClockFROHF96M

(

void

)

This function executes configuration of clocks.

< Set up the clock sources

< Set up FRO

< Ensure FRO is on

< Switch to FRO 12MHz first to ensure we can change voltage without accidentally being below the voltage for current speed

< Set voltage for the one of the fastest clock outputs: System clock output

< Set FLASH wait states for core

< Set up high frequency FRO output to selected frequency

< Set up dividers

< Set AHBCLKDIV divider to value 1

< Set up clock selectors - Attach clocks to the peripheries

< Switch MAIN_CLK to FRO_HF

< Set SystemCoreClock variable.

Definition at line 142 of file clock_config.c.

Referenced by BOARD_BootClockRUN(), and BOARD_InitBootClocks().

Here is the caller graph for this function:

Variable Documentation

SystemCoreClock

uint32_t SystemCoreClock