Hi guys, look I have been trying to sequence a red, a green and a blue LED, in that order, when I activate a push button. I have a SampleAndSend function sampling LDR input but the problem is that when I use the delay() function in the cycling routine it shuts the SampleAndSend() function off while it activates the RGB LED cycle.
I understand that by using the millis() function as a timer I can sequence the same routine without affecting SampleAndSend() but I'm really stuck at using millus to accomplish the same task (I'm a novice). Could somebody please help me?
Here's my original code using the delay() function, is there an equivalent method using millus():
#define SAMPLE_PERIOD 10 // Sample Period in Milliseconds
// N.B. The arduino can sample all pins
int setPins[] = {1, 1, 1, 1, 1, 1};
//=======================================================================
//** Variables for data polling
//**
int analogPin, digitalPin; // Counters for poll loop
int analogData; // outgoing ADC value
byte x = 0; //byte to store digital status
byte y = 0; //same as above to store remaining digital pins status
//======================================================================
const int LED_RED = 2; // LED connected to digital pin 2
const int LED_GREEN = 3; // LED connected to digital pin 2
const int LED_BLUE= 4; // LED connected to digital pin 2
const int button_Pin = 5; //Sample button pushed sets the program to run once
// variables will change:
int button_State = 0; // variable for reading the pushbutton status
// The setup() method runs once, when the sketch starts
//=======================================================================
void setup() {
//setup serial baudrate for USB connection
Serial.begin(57600);
// initialize the digital pins as an output:
pinMode(LED_RED, OUTPUT);
pinMode(LED_GREEN, OUTPUT);
pinMode(LED_BLUE, OUTPUT);
pinMode(button_Pin,INPUT);
//enable digital pullups. All digital pins are set high
//and will only output change when connected to ground
for(digitalPin=6;digitalPin<14;++digitalPin)
{
pinMode(digitalPin, INPUT); //Setpin up for input
digitalWrite(digitalPin, HIGH); //enable internal pullups
}
}
//***********************************************************************
//** period has passed and its time to sample again.
void loop() {
long periodCheck = millis()%SAMPLE_PERIOD;
if (periodCheck == 0)
{
SampleAndSend();
}
//--------------------------------------------------------------------------------------------------
// read the state of the pushbutton value:
const int button_Pin = 5; //Sample button pushed sets the program to run once
button_State = digitalRead(button_Pin);
// check if the pushbutton is pressed.
// if it is, the buttonState is HIGH:
if (button_State == LOW) {
digitalWrite(LED_RED, HIGH); // set the LED on
delay(1000); // wait for a second
digitalWrite(LED_RED, LOW); // set the LED off
delay(1000); // wait for a second
digitalWrite(LED_GREEN, HIGH); // set the LED on
delay(1000); // wait for a second
digitalWrite(LED_GREEN, LOW); // set the LED off
delay(1000);
digitalWrite(LED_BLUE, HIGH); // set the LED on
delay(1000); // wait for a second
digitalWrite(LED_BLUE, LOW); // set the LED off
delay(1000);
}
else {
// turn LEDs off:
digitalWrite(LED_RED, LOW);
digitalWrite(LED_GREEN, LOW);
digitalWrite(LED_BLUE, LOW);
}
}
//*********************************************************************// SampleAndSend
void SampleAndSend()
{
x = PIND >> 7; // Shift digital pin port D by 2 to avoid TX and RX pins
Serial.print(x, BYTE);
y = PINB; // Read remaining digital pins
Serial.print(y, BYTE);
for(analogPin=0; analogPin<6; analogPin++) {
if(setPins[analogPin]==1)
{
analogData = analogRead(analogPin); // Read current analog pin value
Serial.print(analogData >> 7, BYTE); // shift high bits into output byte
Serial.print(analogData % 128, BYTE); // mod by 128 for the small byte
}
else
{
Serial.print(0, BYTE); // Send 0 to output
Serial.print(0, BYTE); //
}
}
Serial.print(255, BYTE); // end of packet signifier
/* This bit of code was used for checking how long a full read takes
Serial.println(millis());
*/
}
Thanks again for your time! 