Explain.
A serial of leds, will switch on and switch off continuously, in both directions, the delay between switch can be modified using two buttons.
An the delay value will send the cubieboard and displayed.
.....
void setup()
{
//Initiate the serial communications at the arduino
Serial.begin(115200);
//Digital pins for output
for (int x=0; x<5;x++)
{
pinMode(ledPin[x],OUTPUT);
}
// Digital pins for Input
pinMode(btnUP,INPUT);
pinMode(btnDOWN,INPUT);
changeTime =millis();
}
// Main program in a continuous loop
void loop()
{
if ((millis() -changeTime) > ledDelay)
{
changeLED();
changeTime= millis();
}
if (digitalRead(btnUP))
{
//Serial print will be part of a function to use a protocol
Serial.println(ledDelay++);
delay(20);
if (ledDelay >200) ledDelay =200;
}
...........
void changeLED()
{
//switch off all the leds
for (int x =0; x<5;x++)
{
digitalWrite(ledPin[x],LOW);
}
digitalWrite(ledPin[currentLed],HIGH);
currentLed += direction;
if (currentLed == 4) {direction = -1;}
if (currentLed == 0) {direction = 1;}
}
Note: In the "Serial.println(value) will be used to make a function to control the protocol between arduino and cubieboard
To see if the cubieboard can receive the data I use the information that I find here : http://linux-sunxi.org/Cubieboard/TTL
stty -F /dev/ttyS0 -crtscts cu -s 115200 -l /dev/ttyS0
I know that the circuit is very simple, and even one of the worst I've ever made, but is just to see the idea.
If any one has any idea, or doubt, please share, I made this to learn and share.
