/******************************************************************************
 *   irq.h:  Interrupt related Header file for Philips LPC318x Family 
 *   Microprocessors
 *
 *   Copyright(C) 2006, Philips Semiconductor
 *   All rights reserved.
 *
 *   History
 *   2005.10.01  ver 1.00    Prelimnary version, first Release
 *
******************************************************************************/
#ifndef __IRQ_H 
#define __IRQ_H

typedef  void (*HandlerAddr)(void);

#define I_Bit			0x80
#define F_Bit			0x40

#define SYS32Mode		0x1F
#define IRQ32Mode		0x12
#define FIQ32Mode		0x11

#define  INT_LOW_LEVEL          0
#define  INT_HIGH_LEVEL         1

#define  INT_LEVEL_SENSITIVE    0
#define  INT_EDGE_SENSITIVE     1


/* unlike Keil Compiler, don't save and restore registers into the stack
in RVD as the compiler does that for you. See RVD ARM compiler Inline and
embedded assemblers, "Rules for using __asm and asm keywords. */
static DWORD sysreg;		/* used as LR register */
#define IENABLE __asm { MRS sysreg, SPSR; MSR CPSR_c, #SYS32Mode }
#define IDISABLE __asm { MSR CPSR_c, #(IRQ32Mode|I_Bit); MSR SPSR_cxsf, sysreg }

void init_irq( void );
void Install_MIC( BYTE IntNum, BYTE ActPol, BYTE ActType, HandlerAddr Handler );
void Install_SIC1( BYTE IntNum, BYTE ActPol, BYTE ActType, HandlerAddr Handler );
void Install_SIC2( BYTE IntNum, BYTE ActPol, BYTE ActType, HandlerAddr Handler );

void Enable_MIC( BYTE IntNum );
void Enable_SIC1( BYTE IntNum );
void Enable_SIC2( BYTE IntNum );

void Disable_MIC( BYTE IntNum );
void Disable_SIC1( BYTE IntNum );
void Disable_SIC2( BYTE IntNum );

#endif /* end __IRQ_H */

/******************************************************************************
**                            End Of File
******************************************************************************/