System Functions

General Description

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

Functions
void	SystemInit (void)
	For CAT1A: More...
void	SystemCoreClockUpdate (void)
	Gets core clock frequency and updates SystemCoreClock, cy_Hfclk0FreqHz, and cy_PeriClkFreqHz. More...

Function Documentation

SystemInit()

void SystemInit

(

void

)

For CAT1A:

Initializes the system:

• Restores FLL registers to the default state for single core devices.
• Unlocks and disables WDT.
• Calls Cy_PDL_Init() function to define the driver library.
• Calls the Cy_SystemInit() function, if compiled from PSoC™ Creator.
• Calls Cy_PRA_Init() for PSoC™ 64 devices.
• Calls SystemCoreClockUpdate().

For CAT1B:

Initializes the system:

• Unlocks and disables WDT.
• Calls Cy_PDL_Init() function to define the driver library.
• Calls the Cy_SystemInit() function.
• Calls SystemCoreClockUpdate().

For CAT1C:

Initializes the system:

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

SystemCoreClockUpdate()

void SystemCoreClockUpdate

(

void

)

Gets core clock frequency and updates SystemCoreClock, cy_Hfclk0FreqHz, and cy_PeriClkFreqHz.

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