Large array of strings

Using Arduino Programming Questions
#1

Code with small array of strings does work as expected. It outputs "OK 00000008".

const char * iKey = {"00000000","00000008","00000070"};
void setup() {
Serial.begin(9600);
Serial.print("OK ");
Serial.print(iKey[1]);
}
void loop() {
}

Code with large array of strings does not work as expected. It outputs "2300078600".
I suspect my array is being overwritten, but I can't figure out a solution.

const char * iKey = {"00000000","00000008","00000070","00000078","00000600","00000608","00000670","00000678","00005000","00005008","00005070","00005078","00005600","00005608","00005670","00005678","00040000","00040008","00040070","00040078","00040600","00040608","00040670","00040678","00045000","00045008","00045070","00045078","00045600","00045608","00045670","00045678","00300000","00300008","00300070","00300078","00300600","00300608","00300670","00300678","00305000","00305008","00305070","00305078","00305600","00305608","00305670","00305678","00340000","00340008","00340070","00340078","00340600","00340608","00340670","00340678","00345000","00345008","00345070","00345078","00345600","00345608","00345670","00345678","02000000","02000008","02000070","02000078","02000600","02000608","02000670","02000678","02005000","02005008","02005070","02005078","02005600","02005608","02005670","02005678","02040000","02040008","02040070","02040078","02040600","02040608","02040670","02040678","02045000","02045008","02045070","02045078","02045600","02045608","02045670","02045678","02300000","02300008","02300070","02300078","02300600","02300608","02300670","02300678","02305000","02305008","02305070","02305078","02305600","02305608","02305670","02305678","02340000","02340008","02340070","02340078","02340600","02340608","02340670","02340678","02345000","02345008","02345070","02345078","02345600","02345608","02345670","02345678","10000000","10000008","10000070","10000078","10000600","10000608","10000670","10000678","10005000","10005008","10005070","10005078","10005600","10005608","10005670","10005678","10040000","10040008","10040070","10040078","10040600","10040608","10040670","10040678","10045000","10045008","10045070","10045078","10045600","10045608","10045670","10045678","10300000","10300008","10300070","10300078","10300600","10300608","10300670","10300678","10305000","10305008","10305070","10305078","10305600","10305608","10305670","10305678","10340000","10340008","10340070","10340078","10340600","10340608","10340670","10340678","10345000","10345008","10345070","10345078","10345600","10345608","10345670","10345678","12000000","12000008","12000070","12000078","12000600","12000608","12000670","12000678","12005000","12005008","12005070","12005078","12005600","12005608","12005670","12005678","12040000","12040008","12040070","12040078","12040600","12040608","12040670","12040678","12045000","12045008","12045070","12045078","12045600","12045608","12045670","12045678","12300000","12300008","12300070","12300078","12300600","12300608","12300670","12300678","12305000","12305008","12305070","12305078","12305600","12305608","12305670","12305678","12340000","12340008","12340070","12340078","12340600","12340608","12340670","12340678","12345000","12345008","12345070","12345078","12345600","12345608","12345670","12345678"};
void setup() {
Serial.begin(9600);
Serial.print("OK ");
Serial.print(iKey[1]);
}
void loop() {
}

#2

I got bored scrolling, so I can't tell how many strings you have, but it seems likely that you've used all your RAM. Take a look at progmem and store your strings in flash memory instead.

#3

yep:

Program: 4650 bytes (14.2% Full)
(.text + .data + .bootloader)

Data: 3399 bytes (166.0% Full)
(.data + .bss + .noinit)

#4

You can simplify your code, first instead of an array of string you could use an array of numbers, that you can then convert as a string if/when needed. Second, there is a recognizable pattern, the next number is always previous number + some value, can't you find a way to make it so you don't even need an array, or at least, not an array that is so big?

#5

Apologies for slightly off topic, but how did nicoverduin get those program stats:

Program: 4650 bytes (14.2% Full)
(.text + .data + .bootloader)

Data: 3399 bytes (166.0% Full)
(.data + .bss + .noinit)

I'm after just the same stats, but dont know how to get them...

Cheers,
Terry

#6

@Terrry:
http://antanas.veiverys.com/arduino-ram-usage-analysis/

Edit: Also, you can use the following utility which is installed w/ Arduino:

 avr-size -C --mcu=atmega328p foo.elf
AVR Memory Usage
----------------
Device: atmega328p

Program:    2404 bytes (7.3% Full)
(.text + .data + .bootloader)

Data:        192 bytes (9.4% Full)
(.data + .bss + .noinit)

Ray

#7

Thank you all. Problem was solved using progmem as suggested.

#8