2020年03月09日 | intrupt 6410裸机中断

我之前研究了6410的io口中断，想对着datasheet写出中断程序，但是发现，我虽然对着

datasheet可以知道他每个register的作用，但是它们之间的关联并不是很清楚，于是查了

不少的资料。发现要编一个简单的按键控制io口的中断，其实在6410中很容易就实现了，

大致可以这样：

1.初始化io口的register：包括：gpioXcon，EINT0CON0,EINT0MASK,EINT0PEND

2,初始化中断register： vicxINTENABLE , VIC0VECTADDR

这个链接介绍裸机中断也不错：点击打开链接

下面是我编写的中断控制 蜂鸣器的程序：

建议一定要亲自动手写一下，写不出来再看示例，那样效果绝对不同

/* 设置 gpio  k1 gpn0 eint0  k4 gpn3 eint3  k6 gpn5  eint5 

vic0  group 0 

    对应的设置 eintxcon eintxpend eintxmask eintxfltcon

icxintselect vicxaddr 

开中断

pwm  gpf14   1 on

*/

#include "intc.h"

#include "gpio.h"

#include "def.h"

#include "system.h"

int flag = -1;

/* InitInc() 

informantion : int num 0(int_eint0 0,3), int num 1(int_eint 5)

1. enable vic0irqstatus  

2.vic0select  chose irq or fiq

3,vicxenabel 使能

4 vicxintenclear disable 

5,vicxvectaddr isr address register

6.vicvectpriority 每个中断源对应的中断，选16个，排定优先级

7，vic0address 程序执行后，清除 

*/

void __irq K0()

{

u32 TEMP;

flag = -flag;

Outp32(rVIC0ADDR,0);

TEMP = GPIO->rEINT0PEND;

TEMP |= 0X1F;

GPIO->rEINT0PEND = TEMP;

}

void __irq K3()

{

u32 TEMP;

  flag = 1;

  Outp32(rVIC0ADDR,0);

  TEMP = GPIO->rEINT0PEND;

TEMP |= 0X1F;

GPIO->rEINT0PEND = TEMP;

}

/*void __irq K5()

{

u32 TEMP;

flag = -flag;

Outp32(rVIC0ADDR,0);

TEMP = GPIO->rEINT0PEND;

TEMP |= 0X1F;

GPIO->rEINT0PEND = TEMP;

}

*/

void InitInc()

{

// Outp32(rVIC0INTSELECT,0X0);使能中断

Outp32(rVIC0INTENABLE,0X1);

// 把中断地址写入vicvectaddr

Outp32(rVIC0VECTADDR+4*0,(u32)K0);

//Outp32(rVIC0VECTADDR+4*0,(u32)K3);

Outp32(rVIC0VECTADDR+4*1,(u32)K5);

}

void Initgpio()

{  u32 TEMP;

// set the interrupt 

TEMP  = GPIO->rGPIONCON  ;

TEMP &= 0XFFF;

TEMP  |= 0X882;

GPIO->rGPIONCON = TEMP;

TEMP  = GPIO->rGPIONPUD  ;

TEMP &= 0XFFF;

TEMP  |= 0X882;

GPIO->rGPIONPUD = TEMP;

TEMP = GPIO->rGPIOFCON;

TEMP &= ~(0X3<<28) ;

TEMP |=(0X1<<28);

GPIO->rGPIOFCON = TEMP;

TEMP = GPIO->rGPIOFDAT ;

TEMP &= ~(0x1 <<14);

GPIO->rGPIOFDAT = TEMP;

//gpio 触发设置

TEMP = GPIO->rEINT0CON0 ;

TEMP &=~(0XFFF);

TEMP |=0X640;

GPIO->rEINT0CON0 = TEMP;

// gpio 滤波方式 开启 默认delay

TEMP = GPIO->rEINT0FLTCON0;

TEMP |=0X808080;

GPIO->rEINT0FLTCON0 = TEMP;

// ENABLE GPIO INT

TEMP = GPIO->rEINT0MASK;

TEMP &= ~((0X1)|(0X1<<3)|(0X1<<5));

GPIO->rEINT0MASK = TEMP;

// GPIO EINT0PEND 写 1 清 0 

TEMP = GPIO->rEINT0PEND;

TEMP |= 0X1F;

GPIO->rEINT0PEND = TEMP;

}

void BuzzOn()

{ u32 TEMP;

TEMP = GPIO->rGPIOFDAT;

TEMP |= (0X1<<14);

GPIO->rGPIOFDAT = TEMP;

}

void BuzzOff()

{

u32 TEMP;

TEMP = GPIO->rGPIOFDAT;

TEMP &= ~(0X1<<14);

GPIO->rGPIOFDAT = TEMP;

}

int main()

{

//下面两句话一定要有系统使能vic irq

SYSTEM_EnableVIC();

SYSTEM_EnableIRQ();

Initgpio();

InitInc();

while(1)

{

if(flag ==1) BuzzOn();

if(flag ==-1) BuzzOff();

}

}

intc.h

/**************************************************************************************

* 

* Project Name : S3C6410 Validation

*

* Copyright 2006 by Samsung Electronics, Inc.

* All rights reserved.

*

* Project Description :

* This software is only for validating functions of the S3C6410.

* Anybody can use this software without our permission.

*  

*--------------------------------------------------------------------------------------

* 

* File Name : intc.h

*  

* File Description : This file declares prototypes of interrupt controller API funcions.

*

* Author : Haksoo,Kim

* Dept. : AP Development Team

* Created Date : 2006/11/08

* Version : 0.1 

* 

* History

* - Created(Haksoo,Kim 2006/11/08)

* - Added Software Interrupt API function (wonjoon.jang 2007/01/18)

*     - Added Interrupt Source for 6410  (2008/02/28)

*  

**************************************************************************************/

#ifndef __INTC_H__

#define __INTC_H__

#ifdef __cplusplus

extern "C" {

#endif

#include "def.h"

// VIC0

#define rVIC0IRQSTATUS (VIC0_BASE + 0x00)

#define rVIC0FIQSTATUS (VIC0_BASE + 0x04)

#define rVIC0RAWINTR (VIC0_BASE + 0x08)

#define rVIC0INTSELECT (VIC0_BASE + 0x0c)

#define rVIC0INTENABLE (VIC0_BASE + 0x10)

#define rVIC0INTENCLEAR (VIC0_BASE + 0x14)

#define rVIC0SOFTINT (VIC0_BASE + 0x18)

#define rVIC0SOFTINTCLEAR (VIC0_BASE + 0x1c)

#define rVIC0PROTECTION (VIC0_BASE + 0x20)

#define rVIC0SWPRIORITYMASK (VIC0_BASE + 0x24)

#define rVIC0PRIORITYDAISY (VIC0_BASE + 0x28)

#define rVIC0VECTADDR (VIC0_BASE + 0x100)

#define rVIC0VECPRIORITY (VIC0_BASE + 0x200)

#define rVIC0ADDR (VIC0_BASE + 0xf00)

#define rVIC0PERID0 (VIC0_BASE + 0xfe0)

#define rVIC0PERID1 (VIC0_BASE + 0xfe4)

#define rVIC0PERID2 (VIC0_BASE + 0xfe8)

#define rVIC0PERID3 (VIC0_BASE + 0xfec)

#define rVIC0PCELLID0 (VIC0_BASE + 0xff0)

#define rVIC0PCELLID1 (VIC0_BASE + 0xff4)

#define rVIC0PCELLID2 (VIC0_BASE + 0xff8)

#define rVIC0PCELLID3 (VIC0_BASE + 0xffc)

#endif

gpio.h

/**************************************************************************************

* 

* Project Name : S3C6410 Validation

*

* Copyright 2006 by Samsung Electronics, Inc.

* All rights reserved.

*

* Project Description :

* This software is only for validating functions of the S3C6410.

* Anybody can use this software without our permission.

*  

*--------------------------------------------------------------------------------------

* 

* File Name : gpio.h

*  

* File Description : This file declares prototypes of GPIO API funcions.

*

* Author : Heemyung.Noh

* Dept. : AP Development Team

* Created Date : 2006/12/26

* Version : 0.1 

* 

* History

* - Created(Heemyung.Noh 2006/12/26)

*     - Added EINT (Wonjoon.jang 2007/01/03)

*  

**************************************************************************************/

#ifndef __GPIO_H__

#define __GPIO_H__

#ifdef __cplusplus

extern "C" {

#endif

#include "def.h"

#include "sfr6410.h"

#define Low_Level 0x0

#define High_Level 0x1

#define Falling_Edge 0x2

#define Rising_Edge 0x4

#define Both_Edge 0x6

#define GPIO ( ( volatile oGPIO_REGS * ) (GPIO_BASE))

#define    Inp32(ADDR)        *((volatile u32 *)ADDR)

#define    Outp32(ADDR,data)        *((volatile u32 *)ADDR)=data

typedef struct tag_GPIO_REGS

{

u32 rGPIOACON; //0x7F008000

u32 rGPIOADAT;

u32 rGPIOAPUD;

u32 rGPIOACONSLP;

u32 rGPIOAPUDSLP;

u32 reserved1[3];

u32 rGPIOBCON; //0x7F008020

u32 rGPIOBDAT;

u32 rGPIOBPUD;

u32 rGPIOBCONSLP;

u32 rGPIOBPUDSLP;

u32 reserved2[3];

u32 rGPIOCCON; //0x7F008040

u32 rGPIOCDAT;

u32 rGPIOCPUD;

u32 rGPIOCCONSLP;

u32 rGPIOCPUDSLP;

u32 reserved3[3];

u32 rGPIODCON; //0x7F008060

u32 rGPIODDAT;

u32 rGPIODPUD;

u32 rGPIODCONSLP;

u32 rGPIODPUDSLP;

u32 reserved4[3];

u32 rGPIOECON; //0x7F008080

u32 rGPIOEDAT;

u32 rGPIOEPUD;

u32 rGPIOECONSLP;

u32 rGPIOEPUDSLP;

u32 reserved5[3];

u32 rGPIOFCON; //0x7F0080A0

u32 rGPIOFDAT;

u32 rGPIOFPUD;

u32 rGPIOFCONSLP;

u32 rGPIOFPUDSLP;

u32 reserved6[3];

u32 rGPIOGCON; //0x7F0080C0

u32 rGPIOGDAT;

u32 rGPIOGPUD;

u32 rGPIOGCONSLP;

u32 rGPIOGPUDSLP;

u32 reserved7[3];

u32 rGPIOHCON0; //0x7F0080E0

u32 rGPIOHCON1;

u32 rGPIOHDAT;

u32 rGPIOHPUD;

u32 rGPIOHCONSLP;

u32 rGPIOHPUDSLP;

u32 reserved8[2];

u32 rGPIOICON; //0x7F008100

u32 rGPIOIDAT;

u32 rGPIOIPUD;

u32 rGPIOICONSLP;

u32 rGPIOIPUDSLP;

u32 reserved9[3];

u32 rGPIOJCON; //0x7F008120

u32 rGPIOJDAT;

u32 rGPIOJPUD;

u32 rGPIOJCONSLP;

u32 rGPIOJPUDSLP;

u32 reserved10[3];

u32 rGPIOOCON; //0x7F008140

u32 rGPIOODAT;

u32 rGPIOOPUD;

u32 rGPIOOCONSLP;

u32 rGPIOOPUDSLP;

u32 reserved11[3];

u32 rGPIOPCON; //0x7F008160

u32 rGPIOPDAT;

u32 rGPIOPPUD;

u32 rGPIOPCONSLP;

u32 rGPIOPPUDSLP;

u32 reserved12[3];

u32 rGPIOQCON; //0x7F008180

u32 rGPIOQDAT;

u32 rGPIOQPUD;

u32 rGPIOQCONSLP;

u32 rGPIOQPUDSLP;

u32 reserved13[3];

u32 rSPCON; //0x7F0081A0

u32 reserved14[3];

u32 rMEM0CONSTOP; //0x7F0081B0

u32 rMEM1CONSTOP; //0x7F0081B4

u32 reserved15[2];

u32 rMEM0CONSLP0; //0x7F0081C0

u32 rMEM0CONSLP1; //0x7F0081C4

u32 rMEM1CONSLP; //0x7F0081C8

u32 reserved;

u32 rMEM0DRVCON; //0x7F0081D0

u32 rMEM1DRVCON; //0x7F0081D4

u32 reserved16[10];

u32 rEINT12CON; //0x7f008200

u32 rEINT34CON; //0x7f008204

u32 rEINT56CON; //0x7f008208

u32 rEINT78CON; //0x7f00820C

u32 rEINT9CON; //0x7f008210

u32 reserved17[3];

u32 rEINT12FLTCON; //0x7f008220

u32 rEINT34FLTCON; //0x7f008224

u32 rEINT56FLTCON; //0x7f008228

u32 rEINT78FLTCON; //0x7f00822C

u32 rEINT9FLTCON; //0x7f008230

u32 reserved18[3];

u32 rEINT12MASK; //0x7f008240

u32 rEINT34MASK; //0x7f008244

u32 rEINT56MASK; //0x7f008248

u32 rEINT78MASK; //0x7f00824C

u32 rEINT9MASK; //0x7f008250

u32 reserved19[3];

u32 rEINT12PEND; //0x7f008260

u32 rEINT34PEND; //0x7f008264

u32 rEINT56PEND; //0x7f008268

u32 rEINT78PEND; //0x7f00826C

u32 rEINT9PEND; //0x7f008270

u32 reserved20[3];

u32 rPRIORITY; //0x7f008280

u32 rSERVICE; //0x7f008284

u32 rSERVICEPEND; //0x7f008288

u32 reserved21;

u32 reserved22[348];

u32 rGPIOKCON0; //0x7f008800

u32 rGPIOKCON1; //0x7f008804

u32 rGPIOKDAT; //0x7f008808

u32 rGPIOKPUD; //0x7f00880c

u32 rGPIOLCON0; //0x7f008810

u32 rGPIOLCON1; //0x7f008814

u32 rGPIOLDAT; //0x7f008818

u32 rGPIOLPUD; //0x7f00881c

u32 rGPIOMCON; //0x7f008820

u32 rGPIOMDAT; //0x7f008824

u32 rGPIOMPUD; //0x7f008828

u32 reserved23;

u32 rGPIONCON; //0x7f008830

u32 rGPIONDAT; //0x7f008834

u32 rGPIONPUD; //0x7f008838

u32 reserved24;

u32 reserved25[16];

u32 rSPCONSLP; //0x7f008880

u32 reserved26[31];

u32 rEINT0CON0; //0x7f008900

u32 rEINT0CON1; //0x7f008904

u32 reserved27[2];

u32 rEINT0FLTCON0; //0x7f008910