sensor_i2c.c

onmivision 摄相头模块驱动程序,blackfin 平台参考设计.

#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <errno.h>
#include <linux/delay.h>
//#include <linux/i2c.h>
#include "sensor_i2c.h"
#define I2C_DEVICE	"/dev/ov_sensor"

#define PPI_DEVICE	"/dev/ppifcp"

#define I2C_TENBIT	0x0704
#define	I2C_SLAVE	0x0703
#define I2C_RDWR	0x0707

#define APP_DBG 	1
#define IDAddr		0x3000
#define I2C_CYCLE	0

#define SET_IIC_PAR(addr,data)		ioctl(fd1,I2C_CYCLE,IDAddr + addr);(I2cWrBuf[0] = data)

unsigned char ImageBuf[704*288];

unsigned char I2cWrBuf[2];
unsigned char I2cRdBuf[2];
int fd1,fd2,fd3;
void OvInitChk(int fd);

void OvInit(int fd){
	int t = sizeof(SensorInitTab);
	int i;
	/*
	ioctl(fd,I2C_CYCLE,IDAddr + SENSOR_COM7);
	I2cWrBuf[0] = 0x80;
	write(fd,I2cWrBuf,2);
	OvInitChk(fd);
	*/
	for(i = 0;i< t - 1;i = i+2){
		SET_IIC_PAR(SensorInitTab[i],SensorInitTab[i+1]);
		write(fd,I2cWrBuf,2);
	}
}
void OvInitChk(int fd){
	char i = sizeof(SensorInitTab);
	for(i = i-2;i >= 0;i = i-2){
		ioctl(fd,I2C_CYCLE,IDAddr + i); 
	}
}
	
void MatrixSave(void){
        fd3 = read(fd2,ImageBuf,sizeof(ImageBuf));
        if (fd3 < 0){
                printf("catch image failed!\n");
                close(fd3);
        }
        else{
                printf("obtain matrix:= %d\n",fd3);
                fd3 = open("/var/temp1",O_CREAT);
                close(fd3);
                fd3 = open("/var/temp1",O_RDWR);
                if (fd3 < 0)
                        printf("open file failed\n");
                else
                        write(fd3,ImageBuf,sizeof(ImageBuf));
                close(fd3);
        }
}


int main(void)
{
	unsigned int i,j;
#ifdef APP_DBG
	unsigned int JudgeChar;
#endif		
	fd1 = open(I2C_DEVICE,O_RDWR);
	if (fd1 < 0)
		{
		perror("open device failed!\n");
		exit(0);
		}
#ifdef APP_DBG
	printf("open I2C success!\n");	
#endif
	OvInit(fd1);
	fd2 = open(PPI_DEVICE,O_RDONLY);
	if (fd2 < 0)
		{
		perror("open device failed!\n");
		exit(0);
		}
	ioctl(fd2,CMD_PPI_SET_PIXELS_PER_LINE,704);
#ifdef APP_DBG
	printf("open PPI success!\n");
	while(1){
		printf("please input the opcode dd for read ,cc for write:");
		scanf("%x",&JudgeChar);
		if(JudgeChar == 0xdd){ 
			printf("please input the read address:");
			scanf("%x",&i); 
			SET_IIC_PAR(i,0x0);
			printf("0x%x content is %x\n",i,read(fd1,I2cRdBuf,2));
		}
		else if(JudgeChar == 0xcc){
			printf("please input the write address:");
			scanf("%x",&JudgeChar);
			printf("please input the write content:");
			scanf("%x",&i);
			SET_IIC_PAR(JudgeChar,i);
			write(fd1,I2cWrBuf,2);
		}
		else if(JudgeChar == 0xee)
			MatrixSave();		
		else if(JudgeChar == 0xff)
			break;
	}
#endif

#if 0
	for(i=0;i < sizeof(ImageBuf);++i)
	printf("%x,",ImageBuf[i]);
		
	
	//	for (j=0x00;j<=0xfe00;j=j+0x100)
	//	{i
		
			i2c_wr_buf[0] = 0x55;		
			ioctl(fd1,I2C_CYCLE,0x3000+0);
			write(fd1,i2c_wr_buf,2);
			getchar();
			j=read(fd1,i2c_rd_buf,2);
			printf("address 0 content is %x\n",j);
			getchar();

			i2c_wr_buf[0] = 0xaa;
			ioctl(fd1,I2C_CYCLE,0x3000+1);
			write(fd1,i2c_wr_buf,2);
			getchar();
			j=read(fd1,i2c_rd_buf,2);
			printf("address 1 content is %x\n",j);
			getchar();

			i2c_wr_buf[0] = 0x55;
			ioctl(fd1,I2C_CYCLE,0x3000+2);
			write(fd1,i2c_wr_buf,2);
			getchar();
			j=read(fd1,i2c_rd_buf,2);
			printf("address 2 content is %x\n",j);
			getchar();
	
	
			for(i=0;i< 0xab;++i)
			{
			i2c_wr_buf[0] = 0x55;
			ioctl(fd1,I2C_CYCLE,0x3000+i);
			write(fd1,i2c_wr_buf,2);
			getchar();
		 	j=read(fd1,i2c_rd_buf,2);
			//if ((i2c_rd_buf[0]!=0x6)&&(i2c_rd_buf[0]!=0x24))
			printf("address %x content is %x\n",i,j);
			getchar();
		
			}
			
			#endif	


	close(fd1);
	close(fd2);
	
	
}