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Out Of Memory

 
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jacqueskleynhans



Joined: 10 Apr 2008
Posts: 109
Location: Cape Town, South Africa

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Out Of Memory
PostPosted: Wed Jun 09, 2010 7:55 am     Reply with quote
HI Guys I have to send about 150 I2c commands to a peripheral camera sensor but I have seemed to run out of ROM space....

Can any suggest something that may condense space the I2c commands are in this fastion:
Code:
//Command used to initiated a soft restart
i2c_start();
i2c_write(OV5620_WRITE_ADDR);
i2c_write(0x12);
i2c_write(0x80);
i2c_stop();

delay_us(2);  // Bus Free time

//Setup Common control 8
i2c_start();
i2c_write(OV5620_WRITE_ADDR);
i2c_write(0x13);
i2c_write(0x00);
i2c_stop();

delay_us(2); 

//Set (11110) to AEC[10:3] Automatic Exposure Control
i2c_start();
i2c_write(OV5620_WRITE_ADDR);
i2c_write(0x10);
i2c_write(0x1E);
i2c_stop();

delay_us(2);

//Reserved
i2c_start();
i2c_write(OV5620_WRITE_ADDR);
i2c_write(0x3B);
i2c_write(0x07);
i2c_stop();

delay_us(2); 
//Reserved
i2c_start();
i2c_write(OV5620_WRITE_ADDR);
i2c_write(0x5B);
i2c_write(0x40);
i2c_stop();

delay_us(2); 

//Reserved
i2c_start();
i2c_write(OV5620_WRITE_ADDR);
i2c_write(0x39);
i2c_write(0x07);
i2c_stop();

delay_us(2); 

//Reserved
i2c_start();
i2c_write(OV5620_WRITE_ADDR);
i2c_write(0x53);
i2c_write(0x02);
i2c_stop();

delay_us(2); 

//Reseved
i2c_start();
i2c_write(OV5620_WRITE_ADDR);
i2c_write(0x54);
i2c_write(0x60);
i2c_stop();

delay_us(2); 


Thanks in advance

Jacques
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mskala



Joined: 06 Mar 2007
Posts: 100
Location: Massachusetts, USA

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PostPosted: Wed Jun 09, 2010 8:55 am     Reply with quote
Create a subroutine for the write, you only even need 2 parameters.
rnielsen



Joined: 23 Sep 2003
Posts: 852
Location: Utah

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PostPosted: Wed Jun 09, 2010 10:08 am     Reply with quote
One thing that causes Out of Rom errors is if you have too much code in one function, including main(). The PIC's memory space is like a book. You have several pages in the book but your code(function) has to fit on each page and cannot carry over to the next page. I would imagine this is your problem. Try chopping your I2C commands into separate functions and then just call those functions in order to create the same effect.

Ronald
jacqueskleynhans



Joined: 10 Apr 2008
Posts: 109
Location: Cape Town, South Africa

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PostPosted: Wed Jun 09, 2010 2:44 pm     Reply with quote
thx i will give that a try
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