SD question

Projects Programming
1

Can code be executed from an SD card, as if you were expanding the PROGMEM?

Would that use more RAM than it was worth?

2

You'd have to get the code from SD into PROGMEM for it to be executed.

3

I would imagine it would be similar to serving a web page from an SD card:

while(file.available()){
char c = file.read();
client.print(c);
}

But how would you store a file into RAM and then execute it instead of send it?

4

The AVR cannot execute code from RAM, which is why you have to get the data from SD to PROGMEM.

5

Well then how would you get it into PROGMEM then?

6

Write your own combined FAT library and boot loader.
Or just buy a processor with more PROGMEM.

7