Оccupies a large part of the ROM :(

MegatroniC · Joined: 08 Dec 2009 Posts: 35

Hello.

This fragment of my code occupies 20% ROM. (Here most of the code)
How can I optimize?

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

I'm pretty sure people have written a more compact printf replacement that saves code space by not having to deal with floats, etc. You should look into that.

Ttelmah · Joined: 11 Mar 2010 Posts: 19504

You have already marked that 'time_data' is occupying 19%.
Your chip only has a small amount of memory. The print statements in this, are the big 'memory hogs'.
You might find they would code smaller, by using a separate 'printval' function, that just outputs a single int8, and calling this in turn for each value, and just using putc, to send the extra characters between. This way one single print function does 80% of the work.

Your 'switch' can be coded smaller as:

adc_channel=(adc_channel+1)&3;

Best Wishes