LPC2xxx System

Collaboration diagram for LPC2xxx System:

Modules
	APB(ARM Peripheral Bus) peripheries registers addresses
	LPC2xxx System etc periphirals
	NXP PLCK divider NXP PCLK Peripheral Clock devider -> PLCK divider (VPB bus clock dividers) Bit1 Bit0 Description 0 0 cclk/4 (1/4 From CPU CLOCK) 0 1 cclk/1 (No division) 1 0 cclk/2 (1/2 From CPU CLOCK) 1 1 cclk/6 or cclk/8.
	CMSIS Core Definitions for LPC2xxx
	This file defines all structures and symbols for CMSIS core:
	LPC2xxx IRQ Numbers
	APB(ARM Peripheral Bus) peripheries base addresses

Files
file	LPC2xxx.h
	APB(ARM Peripheral Bus) peripheries registers CMSIS like style.
file	system_LPC2xxx.c
	CMSIS like Device Peripheral Access Layer system.c Source File for the NXP LPC2xxx Device Series.
file	system_LPC2xxx_ISR.c
	Interrupt functions for CMSIS Device Peripheral Access Layer for the NXP LPC2xxx Device Series.

Macros
#define	SystemVIC_ClearISR(IRQn)   SystemVIC_SetISR(NULL,IRQn,-1)
	This macro will clear ISR.

Functions
__STATIC_INLINE ISR_ptr_type	GET_ISR_HANDLER_BY_NUMBER (const IRQn_Type IRQn)
__STATIC_INLINE void	NVIC_DisableIRQ (IRQn_Type IRQn)
	Disable External Interrupt.
void	NVIC_EnableIRQ (IRQn_Type IRQn)
	Enable External Interrupt.
__STATIC_INLINE uint32_t	NVIC_GetPriorityGrouping (void)
	Get Priority Grouping.
__STATIC_INLINE void	NVIC_SetPriority (IRQn_Type IRQn, uint32_t priority)
	Set Interrupt Priority.
__STATIC_INLINE void	NVIC_SetPriorityGrouping (uint32_t PriorityGroup)
	Set Priority Grouping.
void	SystemInit (void)
	Initialize the system.
void	SystemVIC_Init (void)
	Initialize the system VIC.
uint32_t	SysTick_Config (uint32_t ticks)
	System Tick Configuration.

Variables
const ISR_ptr_type	ISR_HANDLES_ARRAY []
void *SystemVIC_SetISR isr_func	MOVE_CODE_TO_FLASH
	Setup and turn on Interrupt in VIC.
const char	sizeof_ISR_HANDLES_ARRAY
uint32_t	SystemCoreClock

Detailed Description

Macro Definition Documentation

#define SystemVIC_ClearISR

(

IRQn

)

SystemVIC_SetISR(NULL,IRQn,-1)

This macro will clear ISR.

Parameters

[in]

IRQn

Number of the interrupt for set priority

Definition at line 108 of file system_LPC2xxx.h.

Function Documentation

__STATIC_INLINE ISR_ptr_type GET_ISR_HANDLER_BY_NUMBER

(

const IRQn_Type

IRQn

)

Definition at line 1807 of file LPC2xxx.h.

References ISR_HANDLES_ARRAY, NULL, and sizeof_ISR_HANDLES_ARRAY.

Referenced by NVIC_EnableIRQ().

Here is the caller graph for this function:

__STATIC_INLINE void NVIC_DisableIRQ

(

IRQn_Type

IRQn

)

Disable External Interrupt.

The function enables a device-specific interrupt in the NVIC interrupt controller.

Parameters

[in]

IRQn

External interrupt number. Value cannot be negative.

Definition at line 1847 of file LPC2xxx.h.

References VIC.

void NVIC_EnableIRQ

(

IRQn_Type

IRQn

)

Enable External Interrupt.

The function enables a device-specific interrupt in the NVIC interrupt controller.

Parameters

[in]

IRQn

External interrupt number. Value cannot be negative.

Definition at line 500 of file core_cm0.h.

References GET_ISR_HANDLER_BY_NUMBER(), NULL, NVIC, SystemVIC_SetISR(), and VIC.

Here is the call graph for this function:

__STATIC_INLINE uint32_t NVIC_GetPriorityGrouping

(

void

)

Get Priority Grouping.

The function only for compatibility PriorityGroup == 7 is supported only

Returns

Always 7

Definition at line 1873 of file LPC2xxx.h.

__STATIC_INLINE void NVIC_SetPriority	(	IRQn_Type	IRQn,
		uint32_t	priority
	)

Set Interrupt Priority.

The function sets the priority of an interrupt.

Note

The priority cannot be set for every core interrupt.

Parameters

[in]	IRQn	Interrupt number.
[in]	priority	Priority to set.

Definition at line 1823 of file LPC2xxx.h.

References sizeof_ISR_HANDLES_ARRAY, and VIC.

__STATIC_INLINE void NVIC_SetPriorityGrouping

(

uint32_t

PriorityGroup

)

Set Priority Grouping.

The function only for compatibility PriorityGroup == 7 is supported only

Parameters

[in]

PriorityGroup

Priority grouping field.

Definition at line 1861 of file LPC2xxx.h.

void SystemInit

(

void

)

Initialize the system.

Parameters

none

Returns

none

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

Parameters

none

Returns

none

Setup the microcontroller system. Initialize the System.

Returns

none

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

Definition at line 61 of file system_ARMCM0.c.

References __isr_vector, __SYSTEM_CLOCK, CCLKCFG_Val, CLKOUTCFG_Val, CLKSRCSEL_Val, FLASHCFG_Val, LPC_SC, PCLKSEL0_Val, PCLKSEL1_Val, PCONP_Val, PLL0CFG_Val, PLL1CFG_Val, SCB, SCS_Val, SystemCoreClock, and USBCLKCFG_Val.

void SystemVIC_Init

(

void

)

Initialize the system VIC.

Returns

none

Setup the microcontroller VIC system. Initialize the VIC and reset all previous VIC interrupts.

Definition at line 360 of file system_LPC2xxx.c.

References SystemVIC_SetISR(), VIC, VIC_DEFAULT_ISR, and VIC_MAX_IRQ_NUMBER.

Here is the call graph for this function:

uint32_t SysTick_Config

(

uint32_t

ticks

)

System Tick Configuration.

The function initializes the System Timer and its interrupt, and starts the System Tick Timer. Counter is in free running mode to generate periodic interrupts.

Parameters

[in]

ticks

Number of ticks between two interrupts.

Returns

0 Function succeeded.

1 Function failed.

Note

When the variable __Vendor_SysTickConfig is set to 1, then the function SysTick_Config is not included. In this case, the file device.h must contain a vendor-specific implementation of this function.

Definition at line 641 of file core_cm0.h.

References __NVIC_PRIO_BITS, NVIC_SetPriority(), SysTick, SysTick_CTRL_CLKSOURCE_Msk, SysTick_CTRL_ENABLE_Msk, SysTick_CTRL_TICKINT_Msk, SysTick_IRQn, and SysTick_LOAD_RELOAD_Msk.

Here is the call graph for this function:

Variable Documentation

const ISR_ptr_type ISR_HANDLES_ARRAY[]

Definition at line 453 of file system_LPC2xxx.c.

Referenced by GET_ISR_HANDLER_BY_NUMBER().

void* SystemVIC_SetISR isr_func MOVE_CODE_TO_FLASH

Setup and turn on Interrupt in VIC.

Set Interrupt Priority

This function sets the priority for the specified interrupt. The interrupt number can be positive to specify an external (device specific) interrupt, or negative to specify an internal (core) interrupt.

Note: The priority cannot be set for every core interrupt.

Parameters

[in]	*isr_func	ISR_HANDLER))' pointer to ISR function
[in]	IRQn	Number of the interrupt for set priority
[in]	priority	The priority of ISR if priority is negative then ISR is disabled so SystemVIC_SetISR(NULL,IRQn,-1) will clear ISR

const char sizeof_ISR_HANDLES_ARRAY

Definition at line 525 of file system_LPC2xxx.c.

Referenced by GET_ISR_HANDLER_BY_NUMBER(), and NVIC_SetPriority().

uint32_t SystemCoreClock

System Clock Frequency (Core Clock)

Definition at line 39 of file system_ARMCM0.c.