Functions

General Description

The following system functions implement CMSIS Core functions. Refer to the CMSIS documentation for more details.

Functions
void	SystemInit (void)
	Initializes the system: More...
void	Cy_SystemInit (void)
	Empty weak function. More...
void	SystemCoreClockUpdate (void)
	Gets core clock frequency and updates SystemCoreClock. More...

Function Documentation

SystemInit()

void SystemInit

(

void

)

Initializes the system:

• Unlocks and disables WDT.
• Disables interrupts.
• Calls the Cy_SystemInit() function.

Note

This function does not initialize clocks. To set up clocks in pre-main, define strong function Cy_SystemInit with your custom clock initialization.

Cy_SystemInit()

void Cy_SystemInit

(

void

)

Empty weak function.

The application code provides a strong function for the actual implementation.

SystemCoreClockUpdate()

void SystemCoreClockUpdate

(

void

)

Gets core clock frequency and updates SystemCoreClock.

Updates global variables used by the Cy_SysLib_Delay(), Cy_SysLib_DelayUs(), and Cy_SysLib_DelayCycles().