2020年03月09日 | 6410 ad 中断读取数据

中断读取数，写之前一直在datasheet中找不出是什么触发中断，后来发现，数据转换完成后就触发中断。所以对相应的中断进行初始化后，打开ad转换，就可以了。

相关的register：adccon：set ad channal，转换频率（prescaler value），prescaler enable，

addcon【0】 enable ad conversion；

adcdatax ：对应的data in it

adcclrint： clear interrupt ad

然后就是相关的vic的一些register了，对应的初始化就行了；

参考代码：

#include "gpio.h"

#include "adcts.h"

#include "uart.h"

#include "intc.h"

#include "system.h"

// adccon 

u8 flag = 0;

void IntClearAdd(void);

void AdIntInit(void);

u32 ReadData(void);

void ClearAdInt(void);

void AdInit(u32 freq)

{

u32 TEMP;

SYSC_GetClkInform(); 

TEMP = g_PCLK/freq -1;

ADCTS->rADCCON = (1<<14)|(TEMP<<6);

AdIntInit();

return ;

}

void __irq AdInt()

{

flag = 1;

//ReadData();

ClearAdInt();

IntClearAdd();

}

void AdIntInit()

{

ClearAdInt();

IntClearAdd();

IntVectAd(63,(u32)AdInt);

IntEnable(63);

}

void ClearAdInt()

{

ADCTS->rADCCLRINT = 0X1;

}

void StartAd()

{

ADCTS->rADCCON |= 0X1;

}

//判断是否已经转换好

u32 ReadData(void)

{

//ADCTS->rADCCON |= 0x1; //start ADC

//while (ADCTS->rADCCON & 0x1); //check if Enable_start is low

//while (!(ADCTS->rADCCON & 0x8000)); //check if EC(End of Conversion) flag is high

return ( (int)ADCTS->rADCDAT0 & 0x3ff );

}

void OutRead(u32 x)

{

u8 TEMP;

TEMP = (u8)x/1000;

Sendchar(TEMP);

x = x%1000;

TEMP = (u8)x/100;

Sendchar(TEMP);

x %= 100;

TEMP = (u8)x/10;

Sendchar(TEMP);

x = (u8)x%10;

Sendchar(x);

}

void delay(int times)

{

    int i;

    for(;times>0;times--)

      for(i=0;i<3000;i++);

}

int main()

{

u32 temp;

SYSTEM_EnableVIC();

SYSTEM_EnableIRQ();

UartInit();

BaudInit(9600);

AdInit(2500000);

Sendchar('r');

do{

StartAd();

while(flag == 0);

temp = ReadData();

OutRead(temp);

delay(8000);

 } while(Getchar() != 'o');

 }

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 "library.h"

#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)

#define rVIC1IRQSTATUS (VIC1_BASE + 0x00)

#define rVIC1FIQSTATUS (VIC1_BASE + 0x04)

#define rVIC1RAWINTR (VIC1_BASE + 0x08)

#define rVIC1INTSELECT (VIC1_BASE + 0x0c)

#define rVIC1INTENABLE (VIC1_BASE + 0x10)

#define rVIC1INTENCLEAR (VIC1_BASE + 0x14)

#define rVIC1SOFTINT (VIC1_BASE + 0x18)

#define rVIC1SOFTINTCLEAR (VIC1_BASE + 0x1c)

#define rVIC1PROTECTION (VIC1_BASE + 0x20)

#define rVIC1SWPRIORITYMASK (VIC1_BASE + 0x24)

#define rVIC1PRIORITYDAISY (VIC1_BASE + 0x28)

#define rVIC1VECTADDR (VIC1_BASE + 0x100)

#define rVIC1VECPRIORITY (VIC1_BASE + 0x200)

#define rVIC1ADDR (VIC1_BASE + 0xf00)

#define rVIC1PERID0 (VIC1_BASE + 0xfe0)

#define rVIC1PERID1 (VIC1_BASE + 0xfe4)

#define rVIC1PERID2 (VIC1_BASE + 0xfe8)

#define rVIC1PERID3 (VIC1_BASE + 0xfec)

#define rVIC1PCELLID0 (VIC1_BASE + 0xff0)

#define rVIC1PCELLID1 (VIC1_BASE + 0xff4)

#define rVIC1PCELLID2 (VIC1_BASE + 0xff8)

#define rVIC1PCELLID3 (VIC1_BASE + 0xffc)

#endif

void IntEnable(u32 intNum)

{

u32 temp;

if(intNum<32)

{

temp = Inp32(rVIC0INTENABLE);

temp |= (1< Outp32(rVIC0INTENABLE, temp);

}

else

{

temp = Inp32(rVIC1INTENABLE);

temp |= (1<<(intNum-32));

Outp32(rVIC1INTENABLE, temp);

}

}

void IntVectAd(u32 intNum, u32 handler)

{

if(intNum<32) //VIC0

{

Outp32(rVIC0VECTADDR+4*intNum, (unsigned)handler);

}

else //VIC1

{

Outp32(rVIC1VECTADDR+4*(intNum-32), (unsigned)handler);

}

}

void IntClearAdd()

{

Outp32(rVIC0ADDR, 0); 

Outp32(rVIC1ADDR, 0);   

}