So many different methods, most using features and functions I've yet to learn about.
I think what I have (below) will hold me for awhile as I await a mega1284P chip coming on a slow ship from China. It really is shame about the state of the mega boards bootloaders (present 2560 and older 1280) still having problems with WDT interrupts, !!! monitor trigger, and possibly a problem loading near max size sketches. I've been lead to believe that the next IDE release may indeed include an updated bootloader for the mega2560 but I suspect the legacy mega1280 will propably spin in the wind, just for the lack of someone recompiling the new 2560 bootloader for the 1280. =(
#include <avr/pgmspace.h> //To store arrays into flash rather then SRAM
// Simple sketch to create large sketch sizes for testing purposes
/*
Blink
Turns on an LED on for one second, then off for one second, repeatedly.
This example code is in the public domain.
*/
// Pin 13 has an LED connected on most Arduino boards.
// give it a name:
int led = 13;
/*
Make arraysize = to 1500 for 328P chip, 4000 for 1280P chip?,
3600 for 644P chip, xxxx for 1284P, etc.
*/
const int arraysize= 1500; // value to mostly fill avalible flash capacity
long myInts0[arraysize] PROGMEM = {}; //Store initilized array into flash memory
long myInts1[arraysize] PROGMEM = {};
long myInts2[arraysize] PROGMEM = {};
long myInts3[arraysize] PROGMEM = {};
// the setup routine runs once when you press reset:
void setup() {
// initialize the digital pin as an output.
pinMode(led, OUTPUT);
int i = random(0,arraysize); // Work around any optimization for constant values
Serial.print(myInts0[i]); // Access some random element so the array can't be optimized away.
Serial.print(myInts1[i]); // Access some random element so the array can't be optimized away.
Serial.print(myInts2[i]); // Access some random element so the array can't be optimized away.
Serial.print(myInts3[i]); // Access some random element so the array can't be optimized away.
}
// the loop routine runs over and over again forever:
void loop() {
digitalWrite(led, HIGH); // turn the LED on (HIGH is the voltage level)
delay(1000); // wait for a second
digitalWrite(led, LOW); // turn the LED off by making the voltage LOW
delay(1000); // wait for a second
}
Lefty