Difference between revisions of "Adafruit32x16RGB"

Revision as of 20:59, 22 August 2011

I am working on a project using 16x32 RGB Panel.

Here is a video of the panel working:

[1]

I wanted to figure out the timing for the interface so I wrote the code myself without using the sample code.

Here is the sample code:

// test the 32x16 LED board. Public Domain.

1. define A A0
2. define B A1
3. define C A2
4. define LAT A3
5. define OE 9
6. define CLK 8
7. define R1 2
8. define G1 3
9. define B1 4
10. define R2 5
11. define G2 6
12. define B2 7

void setup() {

 Serial.begin(115200);

 pinMode(R1,OUTPUT);
 pinMode(G1,OUTPUT);
 pinMode(B1,OUTPUT);
 pinMode(R2,OUTPUT);
 pinMode(G2,OUTPUT);
 pinMode(B2,OUTPUT);
 pinMode(CLK,OUTPUT);
 pinMode(OE,OUTPUT);
 pinMode(A,OUTPUT);
 pinMode(B,OUTPUT);
 pinMode(C,OUTPUT);
 pinMode(LAT,OUTPUT);

 digitalWrite(A,LOW);
 digitalWrite(B,LOW);
 digitalWrite(C,LOW);
 digitalWrite(LAT,LOW);
 digitalWrite(OE,LOW);
 digitalWrite(CLK,HIGH);

}

void updateRow(int i) {

   digitalWrite(OE,LOW);

   // Set the row address
   if ( i & 0x1 ) {
     digitalWrite(A,HIGH);
   } else {
     digitalWrite(A,LOW);
   }
   if ( i & 0x2 ) {
     digitalWrite(B,HIGH);
   } else {
     digitalWrite(B,LOW);
   }
   if ( i & 0x4 ) {
     digitalWrite(C,HIGH);
   } else {
     digitalWrite(C,LOW);
   }

   for ( uint8_t x = 0; x < 64; x++ ) {
     digitalWrite(CLK,LOW);

     if ( x > 31 ) {
       // This will end up on the display closest to the arduino
       digitalWrite(R1,HIGH);
       digitalWrite(G1,HIGH);
       digitalWrite(B1,HIGH);
       digitalWrite(R2,LOW);
       digitalWrite(G2,LOW);
       digitalWrite(B2,HIGH);
     } else {
       // This will end up on the display farthest from the arduino
       digitalWrite(R1,LOW);
       digitalWrite(G1,HIGH);
       digitalWrite(B1,LOW);
       digitalWrite(R2,HIGH);
       digitalWrite(G2,LOW);
       digitalWrite(B2,LOW);
     }
       
     digitalWrite(CLK,HIGH);
   }
   digitalWrite(LAT,HIGH);
   digitalWrite(LAT,LOW);
   digitalWrite(OE,HIGH);

}

void loop() {

 for ( int i = 0; i < 8; i++ ) {
   updateRow(i);
 } 

}

Here is a video of it working:

[2]

I tried the sample programs with 2 cascaded displays and they were mirrored for some reason. I'm not sure why. Also, the first row is corrupted. Here are videos of that happening:

[3]

[4]