www.pudn.com > LPC2148_IAR_LPC2148.zip > 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: 1.1.2.1 $ 
 **************************************************************************/ 
#include  
 
#ifndef __LPC_VIC_H 
#define __LPC_VIC_H 
 
#define IRQ_FLAG        0x80 
#define FIQ_FLAG        0x40 
 
// 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); 
 
void VIC_EnaFastInt(unsigned int FastIntMask); 
void VIC_DisFastInt(unsigned int FastIntMask); 
 
 /************************************************************************* 
 * Function Name: restore_IRQ 
 * Parameters: unsigned long IFlag 
 * Return: void 
 * Description: Restore I flag state 
 * 
 *************************************************************************/ 
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 
 * 
 *************************************************************************/ 
inline 
__arm unsigned long disable_IRQ(void) 
{ 
unsigned long tmp; 
  tmp=__get_CPSR(); 
  __set_CPSR(tmp | IRQ_FLAG); 
  return tmp & IRQ_FLAG; 
} 
 
 /************************************************************************* 
 * Function Name: restore_interrupts 
 * Parameters: unsigned long IFlag 
 * Return: void 
 * Description: Restore F,I flag state 
 * 
 *************************************************************************/ 
inline 
__arm void restore_interrupts(unsigned long IFlag) 
{ 
unsigned long tmp; 
  tmp=__get_CPSR(); 
  __set_CPSR(tmp & (IFlag | ~(IRQ_FLAG | FIQ_FLAG))); 
} 
 
 /************************************************************************* 
 * Function Name: disable_interrupts 
 * Parameters: 
 * Return: unsigned long 
 * Description: Disable interrupts and return previous state state of flgas I 
 * 
 *************************************************************************/ 
inline 
__arm unsigned long disable_interrupts(void) 
{ 
unsigned long tmp; 
  tmp=__get_CPSR(); 
  __set_CPSR(tmp | IRQ_FLAG | FIQ_FLAG); 
  return tmp; 
} 
 
#endif // __LPC_VIC_H