system_same54.c File Reference

Low-level initialization functions called upon chip startup. More...

#include "same54.h"

Go to the source code of this file.

Macros
#define	__SYSTEM_CLOCK   (48000000)

Functions
void	SystemInit (void)
	Setup the microcontroller system. Initialize the System and update the SystemCoreClock variable. More...
void	SystemCoreClockUpdate (void)
	Updates the SystemCoreClock with current core Clock retrieved from cpu registers. More...

Variables
uint32_t	SystemCoreClock = __SYSTEM_CLOCK

Detailed Description

Low-level initialization functions called upon chip startup.

Copyright (c) 2019 Microchip Technology Inc.

\asf_license_start

Definition in file system_same54.c.

Macro Definition Documentation

__SYSTEM_CLOCK

#define __SYSTEM_CLOCK   (48000000)

Initial system clock frequency. The System RC Oscillator (RCSYS) provides the source for the main clock at chip startup.

Definition at line 36 of file system_same54.c.

Function Documentation

SystemCoreClockUpdate()

void SystemCoreClockUpdate

(

void

)

Updates the SystemCoreClock with current core Clock retrieved from cpu registers.

Update SystemCoreClock variable

Definition at line 59 of file system_same54.c.

{
        // Not implemented
        SystemCoreClock = __SYSTEM_CLOCK;
        return;
}

SystemInit()

void SystemInit

(

void

)

Setup the microcontroller system. Initialize the System and update the SystemCoreClock variable.

Initialize the system

Definition at line 46 of file system_same54.c.

{
        // Keep the default device state after reset
        SystemCoreClock = __SYSTEM_CLOCK;
        return;
}

Variable Documentation

SystemCoreClock

uint32_t SystemCoreClock = __SYSTEM_CLOCK

System Clock Frequency (Core Clock)

Definition at line 38 of file system_same54.c.