0 Replies Latest reply on Feb 7, 2012 4:37 PM by alex.b

    New Filter Component - How To Use?

    alex.b

       Hi Everyone,

         

      How do we go about using the new filter component? I would like to try the new filter component as follows:

         

      1) 12 bit data input

         

      2) Basic Hamming window FIR lowpass filter

         

      12 bit sample data conceptual code:

         

      //Global variables

         

      int16 data[128] = {...};//Some array of input values that I will import from another program

         

      int16 output[256];//Empty array that will hold the filter's output (big enough to account for size increase due to convolution)

         

      uint16 i;//Counter for main loop

         

      void main()

         

      {

         

           Filter_Start();

         

           for(i = 0; i < 128; i++)

         

           {

         

                Filter_Write16(data[i]);

         

                CyDelay(1);//Be sure that filter has finished its operation

         

                output[i] = Filter_Read16();

         

           }

         

      //Print the data to the test terminal upon completion

         

      }

         

      Is this the right way to go about using the filter? How do I choose the Readxx() function? Does the Read24() function give me the highest precision? Or will the Read16() be sufficent and scale properly?

         

      Thanks!