More RAM!

If anyone has any solutions for detecting the RAM automatically, I'd be really interested :)

I posted up here to see if anyone has any ideas:

http://stackoverflow.com/questions/23411­824/determining-arm-cortex-m3-ram-size-a­t-run-time

The problem is that when you access something out of range, you get (probably) a BusFault interrupt, and I'm struggling to see a way to recover from it.

Somewhere there must be an example of doing it, but I can't find one.

By the way, you can also check if the RAM is Ok. It's possible that the chips were binned as the 'C' variant because there was a problem with the RAM or Flash higher up the address range:

for (var i=48*1024;i<64*1024;i+=4) {
  poke32(0x20000000+i, 0xAAAAAAAA);
  var v = peek32(0x20000000+i);
  if (v != 0xAAAAAAAA) console.log("Got "+v+" not 0xAAAAAAAA");
  poke32(0x20000000+i, 0x55555555);
  var v = peek32(0x20000000+i);
  if (v != 0x55555555) console.log("Got "+v+" not 0x55555555");
}