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Out of ROM, A segment or the program is too large: main
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PCM programmer

Joined: 06 Sep 2003
Posts: 21708

Posted: Wed Nov 20, 2013 1:40 pm

Quote:

initializePIC();
start_up();
ready_sleep();
battery_monitor(SLEEP_AH);
wireless_tx(1,5);
wireless_rx();

One or more of these functions is too large. I would guess that it's
probably wireless_tx() and/or wireless_rx().

Just split the components of those functions up. Example:
Currently you likely have this (One big function):

Code:

void wireless_tx(int parm1, int parm2)
{
.
.
.
.
.
}

Try to split up wireless_tx() into two or more smaller functions. Example:

Code:

func1()
{
.
.
.
}

func2()
{
.
.
.
}

func3()
{
.
.
}

void wireless_tx(int parm1, int parm2)
{
.
func1(parm1);
.
.
func2(parm2);
.
func3();
.
.
}

I didn't show all the parameters or return values, just to keep it simple.

If you split up your large functions, the compiler will probably be able
to pack the smaller pieces so they efficiently fill up each 2KB code page.
Your PIC has code pages of 0x800 bytes. Functions can not be larger
than the code page size. That's the key issue that you have to deal with.

io_Joe

Joined: 20 Nov 2013
Posts: 5


Posted: Wed Nov 20, 2013 2:03 pm

thank you. I will try that, I am running on #separate prior to main now.. but I feel uneasy doing that... I will try your suggestion.

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