91x_it.c

arm st912 GPIO 操作实例

/******************** (C) COPYRIGHT 2006 STMicroelectronics ********************
* File Name          : 91x_it.c
* Author             : MCD Application Team
* Date First Issued  : 05/18/2006 : Version 1.0
* Description        : Main Interrupt Service Routines.
********************************************************************************
*    This file can be used to describe all the exceptions subroutines
*    that may occur within user application.
*    When an interrupt happens, the software will branch automatically
*    to the corresponding routine according to the interrupt vector
*    loaded in the PC register.
*    The following routines are all empty, user can write code for
*    exceptions handlers and peripherals IRQ interrupts.
********************************************************************************
* History:
* 05/24/2006 : Version 1.1
* 05/18/2006 : Version 1.0

********************************************************************************
* THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS WITH  
* CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. AS 
* A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, INDIRECT
* OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE CONTENT
* OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION
* CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*******************************************************************************/
#include "91x_it.h"
#include "91x_lib.h"
#include "91x_map.h"
volatile unsigned char disp_led = 1;

__asm void IDISABLE(void)
{   MOV r2, LR
    LDMFD SP!, {LR}
    MSR CPSR_c, #0x92
	LDMFD SP!, {R0}
    MSR SPSR_cxsf, R0
	BX   r2  
}


__asm void IENABLE(void) 
{   MOV r2, LR
    MRS R0, SPSR       
    STMFD SP!, {R0}    
    MSR CPSR_c, #0x1F
    STMFD SP!, {LR}	
	BX   r2  
}



/*******************************************************************************
* Function Name  : Undefined_Handler
* Description    : This function Undefined instruction exception.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
__irq void Undefined_Handler(void)
{
}
/*******************************************************************************
* Function Name  : SWI_Handler
* Description    : This function handles SW exception.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
__irq void SWI_Handler(void)
{
}
/*******************************************************************************
* Function Name  : Prefetch_Handler
* Description    : This function handles preftetch abort exception.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
__irq void Prefetch_Handler(void)
{
}
/*******************************************************************************
* Function Name  : Abort_Handler
* Description    : This function handles data abort exception.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
__irq void Abort_Handler(void)
{
}
/*******************************************************************************
* Function Name  : FIQ_Handler
* Description    : This function handles FIQ exception.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
__irq void FIQ_Handler(void)
{
}
/*******************************************************************************
* Function Name  : WDG_IRQHandler
* Description    : This function handles the WDG interrupt request
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
__irq void WDG_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name  : SW_IRQHandler
* Description    : This function handles the SW interrupt request
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
__irq void SW_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name  : ARMRX_IRQHandler
* Description    : This function handles the ARMRX interrupt request
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
__irq void ARMRX_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name  : ARMTX_IRQHandler
* Description    : This function handles the ARMTX interrupt request
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
__irq void ARMTX_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name  : TIM0_IRQHandler
* Description    : This function handles the TIM0 interrupt request
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
__irq void TIM0_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name  : TIM1_IRQHandler
* Description    : This function handles the TIM1 interrupt request
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
__irq void TIM1_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name  : TIM2_IRQHandler
* Description    : This function handles the TIM2 interrupt request
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
__irq void TIM2_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name  : TIM3_IRQHandler
* Description    : This function handles the TIM3 interrupt request
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
__irq void TIM3_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name  : USBHP_IRQHandler
* Description    : This function handles the USBHP interrupt request
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
__irq void USBHP_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name  : USBLP_IRQHandler
* Description    : This function handles the USBLP interrupt request
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
__irq void USBLP_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name  : SCU_IRQHandler
* Description    : This function handles the SCU interrupt request
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
__irq void SCU_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name  : ENET_IRQHandler
* Description    : This function handles the ENET interrupt request
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
__irq void ENET_IRQHandler(void)
{
}
/*******************************************************************************
* Function Name  : DMA_IRQHandler
* Description    : This function handles the DMA interrupt request
* Input          : None
* Output         : None