bperrybap:
The wavehc stuff appears to be commented out however
a a quick looks show two 512 byte buffers in wevehc.Another big guy is a 256 byte shadow buffer for the graphics.
That is quite a bit just right there.
Total BSS without wavehc is currently 0x2c8 which is 35% of your
total RAM. Add in 0x400 for the wavehc buffer1 and buffer2 buffers and you up to 0x6c8
which only leaves 0x138 for everything else including stack and
I'm sure there are other variables in the library as well too.There are several variables in the main sketch that look like they are not
changing and could (should) be declared const to eliminate some storage there.The wavehc does run on m168 and will automatically drop the buffers down to 256 if on
that part. There are some other limitations that come with that (bit rate etc) but you
may want look in the wavehc header and see if you can get away with using the smaller
buffers by patching the defines like they are on a m168.Best thing is to run nm and objdump to start looking at where the memory is going
and see if there is anything easy (like putting the wavehc in m168 mode) that can be done
to save RAM.--- bill
Wow thank you! I'll give it a try. I also had no idea that declaring consts instead of variables will save ram.
CrossRoads:
Duemilanove-style 1284 is not hard to make.
I sell bare boards for $5 shipped to US locations, scrounge the parts you need or pick up for ~$15 at mouser.
On board (MIKROE483) or off board USB/Serial (FTDI Cable or similar) supported too.
PL here Cross Roads Electronics
That's a beauty! I think I'll order a PCB from you. Will it work with 644p? I had hard time finding 1284, they seem to be out of stock almost everywhere. I did request 644p sample from Amtel and it's on it's way.