Experiencing a Problem-Based Learning Approach for Teaching Reconfigurable Architecture Design

Algorithm 4

Code example for the moving window unit (simplified version without initialization and border management).

macro proc movingWindowUnit

       (pixelInChan, pixelsOutChan){

unsigned 8 pixels[2∗Width+3], pixelIn;

while(1)

 par{/∗in parallel∗/

   /∗receiving a pixel∗/

   pixelInChan ? pixelIn;

   /∗storing the last received pixel∗/

   pixels[0] = pixelIn;

   /∗shifting the memory values∗/

   par(i = 1; i<2∗Width+3; i++){

    pixels[i] = pixels[i−1]; }

   /∗sending the neighborhood∗/

   par(j = 0; j< 3 ; j++){

    par{

      pixelsOutChan[j] ! pixels[2∗Width+2−j];

      pixelsOutChan[3+j] ! pixels[Width+2−j];

      pixelsOutChan[6+j] ! pixels[2−j];}}

}}