Hi,
I am trying to create some patterns using Row Scan multiplexing. i tried a lot to lit single led
but no success. Actually i have less knowledge of shifting bits.
This project consists of 6 RGB leds with common Anode and anode connected with BC327 PNP transistors. Circuit diagram is attached.
In this code simple i want to glow RED led ( one pin low)by using pattern and mask, so i can learn mask and pattern things.
const int row[3] = {2,4,7}; // Arduino row pins
const int column[6] = {11,10,9,6,5,3}; // Arduino column pins
int pattern = B0000001;
int mask = 1;
void setup()
{
DDRD |= B11111100; //set pins 2-7 to OUTPUT
PORTD |= B10010100; //set pins 2, 4, 7 HIGH
DDRB |= B00001110; //set pins 9-11 to OUTPUT
for(int i=0 ; i<6; i++){
if((pattern & 1) == 1) digitalWrite(column[i], LOW); else digitalWrite(column[i], HIGH);
mask = mask << 1;
}
digitalWrite(row[0], LOW); // turn on the LEDs
}
void loop()
{
}
Thanks in Advance.