OK Excellent, thanks for sticking with me Mike -
Yes I forgot I was learning C program and kept searching using Arduino as a search term...
Lots more relevant C tutorials out there.
Here is my latest attempt... Its not working. I can't seem to work out how to call up the stop flash symbol as it is a product of the spin function, so the spin function has to run and produce the spinCount which is not in the scope of this function... Its a variable (I tried declaring it as int. stopSymbol, didn't fly)... how do I call a variable made in another function?
Plus the spin function is still running on a matrix index of [0][spinCount] which is row 1 and we need a generalised form - I guess another variable to declare?
//multi-array of 3 reels of 25 symbols made up of 10 different tokens
byte symbols[3][25] = {
{2, 3, 2, 4, 5, 6, 3, 2, 7, 2, 8, 9, 3, 4, 5, 2, 3, 2, 10, 2, 11, 2, 3, 9, 5 },
{10, 4, 9, 2, 3, 4, 9, 5, 6, 4, 9, 7, 8, 4, 9, 11, 9, 3, 5, 9, 5, 3, 2, 9, 4 },
{10, 4, 9, 2, 3, 4, 9, 5, 6, 4, 9, 7, 8, 4, 9, 11, 9, 3, 5, 9, 5, 3, 2, 9, 4 }
};
byte wheel[3] = {0, 0, 0}; //wheel array for storing the stop token for three reel spins
void setup() {
for (int i = 2; i < 12; i++) { // declare pin numbers for 10 symbols
pinMode(i, OUTPUT); //declare pins as outputs
}
pinMode(15, INPUT_PULLUP); //declare pin 15 as an input with 5V pullup resitor
}
void loop() {
Serial.begin(9600);
int j = wheel[0];
int i = spin();
for (int j = 0; j < 3 ; j++ ) { //calling up 3 wheels indexing through matrix rows
for (int i = 0; i < 3; i ++) { //calling up spin and flashing symbol passed up from spin function
flash(200, 200, stopSymbol);
}
}
while (1) { } // stop, press reset to start
}
// flash function calls up each token LED & turns on then off
void flash( int onTime, int offTime, byte token) {
digitalWrite(token, HIGH); // will turn on the LED
delay(onTime); // so you can see it
digitalWrite(token, LOW); // will turn off the LED
delay(offTime); // so you can see it off
}
int spin() {
// loop along 25 smbol row in array
static int spinCount = 0;
// waiting...
while (digitalRead(15) == HIGH) { } // do nothing until the switch is moved
// spin action starts here
while (digitalRead(15) == LOW) { //checking if input remains high before advancing count
spinCount += 1;
if (spinCount == 25) spinCount = 0; //Checking if variable spinCount needs wrapping around
flash(600, 200, symbols[0][spinCount]); // quick flash for each moving symbol
Serial.print(spinCount);
if (spinCount == 0) Serial.println(" "); //start a new line on printout
}
int. stopSymbol = symbols[0][spinCount]
return stopSymbol; // send back the symbol/token it landed on
}