Copy multi Array to larger multi array.

Using Arduino Programming Questions
1

Hi, I have an array

unsigned char tekena [5][5] PROGMEM = {{0,1,1,1,1},{1,0,1,0,0},{1,0,1,0,0},{0,1,1,1,1},{0,0,0,0,0}};
unsigned char tekenb [5][5] PROGMEM = {{1,1,1,1,1},{1,0,1,0,1},{1,0,1,0,1},{0,1,0,1,0},{0,0,0,0,0}};
unsigned char tekenc [5][5] PROGMEM = {{0,1,1,1,0},{1,0,0,0,1},{1,0,0,0,1},{0,0,0,0,0},{0,0,0,0,0}};

During my code i want to fill another array which is defined as

unsigned char Text [50][5][5];

so how do i copy the complete array from progmem to the other array without reading and writing every value independently

Kind regards

Johan

2

I have not used this library, but evidently there is an extended EEPROM library which has a block move function. You can read more about it at:

http://thijs.elenbaas.net/2012/07/extended-eeprom-library-for-arduino

What board are you using? The large array chews up 1250 bytes and that may be a problem on some boards.

3

so how do i copy the complete array from progmem to the other array without reading and writing every value independently

Why is using two (nested) for loops such a burden?

4

jl-p:
so how do i copy the complete array from progmem to the other array without reading and writing every value independently

Even if you find a library to do a block move, that library is still going to be reading and writing every value independently anyway, so you're not going to gain any speed or efficiency vs doing it yourself.

5

oke thx.
i will do it that way.

Kind regards

Johan