lpc_vic.h

深圳优龙公司LPC2148开发板（与iar公司开发板基本相同）的原理图和配套样例程序

#ifndef __LPC_VIC_H
#define __LPC_VIC_H

/*************************************************************************
 *
 *    Used with ICCARM and AARM.
 *
 *    (c) Copyright IAR Systems 2003
 *
 *    File name   : LPC_Vic.h
 *    Description :
 *
 *    History :
 *    1. Data: July 8th, 2004   										   
 *  	 Author: Wilson Liu 												   
 *  	 Description: Create the basic function    
 *    
 *    2. Data: August 4th, 2004 											 
 *  	 Author: Shawn Zhang												 
 *  	 Description: Clean up the functions. Support nonvector interrupt at first.
 *
 *    3. Data   	 : Oct 11, 2004 
 *  	 Author 	 : Stanimir Bonev
 *  	 Description : Modify some function and interface  
 *
 *    $Revision: 1.1 $
 **************************************************************************/

#include <includes.h>

#define IRQ_FLAG	  0x80
//#define INT_MAXNUM   32

/* Interrupt Source */
/*
#define INT_WDT		0x1
#define INT_TIMER0	0x10
#define INT_TIMER1	0x20
#define INT_UART0	0x40
#define INT_UART1	0x80
#define INT_PWM0	0x100
#define INT_I2C		0x200
#define INT_SPI0	0x400
#define INT_SPI1	0x800
#define INT_PLL		0x1000
#define INT_RTC		0x2000
#define INT_EINT0	0x4000
#define INT_EINT1	0x8000
#define INT_EINT2	0x10000
#define INT_EINT3	0x20000
#define INT_AD     	0x40000
*/

#define INT_ALL 		0xFFFFFFFF

// Interrupt protection type
typedef enum
{
	UserandPrivilegedMode	= 0 ,
	PrivilegedMode
}LPC_Vic_ProtectionMode_t;

typedef enum
{
	VIC_Slot0		= 0 ,  // high priority
	VIC_Slot1 ,
	VIC_Slot2 ,
	VIC_Slot3 ,
	VIC_Slot4 ,
	VIC_Slot5 ,
	VIC_Slot6 ,
	VIC_Slot7 ,
	VIC_Slot8 ,
	VIC_Slot9 ,
	VIC_Slot10 ,
	VIC_Slot11 ,
	VIC_Slot12 ,
	VIC_Slot13 ,
	VIC_Slot14 ,
	VIC_Slot15
}LPC_VicIrqSlots_t;

/* Declare API functions */
void VIC_SetProtectionMode( LPC_Vic_ProtectionMode_t ProtectionType );
LPC_Vic_ProtectionMode_t VIC_GetProtectionMode( void );

void VIC_Init( void );

void VIC_EnableInt( unsigned int IntType );
void VIC_DisableInt( unsigned int IntType );

unsigned int VIC_GetIRQStatus( void );
unsigned int VIC_GetFIQStatus( void );

void VIC_EnableNonVectoredIRQ( void( *pIRQSub ) () );
void VIC_DisableNonVectoredIRQ( void );

void VIC_SetVectoredIRQ( void( *pIRQSub ) () , LPC_VicIrqSlots_t VicIrqSlot , unsigned int VicIntSouce );

/*************************************************************************
* Function Name: restore_IRQ
* Parameters: unsigned long IFlag
* Return: void
* Description: Restore I flag state
*  
*************************************************************************/
#pragma inline
__arm void restore_IRQ( unsigned long IFlag )
{
	unsigned long tmp;
	tmp = __get_CPSR();
	__set_CPSR( tmp & ( IFlag | ~IRQ_FLAG ) );
}

/*************************************************************************
* Function Name: disable_IRQ
* Parameters: 
* Return: unsigned long
* Description: Disable IRQ and return previous state state of flgas I
*  
*************************************************************************/
#pragma inline
__arm unsigned long disable_IRQ( void )
{
	unsigned long tmp;
	tmp = __get_CPSR();
	__set_CPSR( tmp | IRQ_FLAG );
	return tmp & IRQ_FLAG;
}
#endif // __LPC_VIC_H