[i2c] i2c-dev driver

[Arnold]

 Hi Frodol,
 
 I'm using an omap5912 and would like to write and
 read
 thru i2c.  Below are  the debug msg aswell as the
 code. 
 
 Debug msg:
 #./i2c_test
 (OJ) adapter number = OMAP I2C adapter
  Writing to i2c error: Remote I/O error
  written -1 bytes
 
 Code:
 
 #define I2C_SLAVE     0x0703
 #define BUFFER_SIZE   32
 
 
 int adapter_nr = 0;
 
 int addr = 0x40; /* The I2C address */
 
 sprintf(filename,"/dev/i2c-%d",adapter_nr);
   if ((file = open(filename,O_RDWR)) < 0) {
     printf("Error Opening File\n");
     exit(1);
   }
 
   if (ioctl(file,I2C_SLAVE,addr) < 0) {
     exit(1);
   }
  
 if (write(file,buffer,sizeof(char) * BUFFER_SIZE) <
 0)
 {
         perror("Error Writing:");
         exit(1);
   }
   printf("written %d bytes\n",i);
   memset(buffer,0,BUFFER_SIZE);
 
   if(read(file,buffer,sizeof(char) * BUFFER_SIZE) <
 0
 )     {
         perror("Error Reading:");
         exit(1);
   }
   printf("read %d bytes\n",i);
   for(i=0;i<BUFFER_SIZE;i++)
   {
      printf("%c",buffer[i]);
   }
   printf("\n");
 
   close(file);
 
 I hope you could help me with my problem? 
 
 Thanks,
 OJ
 
 


__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com