Can't use FHT library

Other Hardware Audio
11

I found this library usable after I moved from the direct avr programming and changing it to the arduino language. Try using something like this:

#define LOG_OUT 1 // use the log output function
#define FHT_N 128  // set to 128 point fht
#include <FHT.h> // include the library

void setup() {
 Serial.begin(9600); // use the serial port
}
void loop() {
   for (int i = 0 ; i < FHT_N ; i++) { // save 128 samples
     fht_input[i] = analogRead(adcPin); // put real data into bins
   }
   fht_window(); // window the data for better frequency response
   fht_reorder(); // reorder the data before doing the fht
   fht_run(); // process the data in the fht
   fht_mag_log(); // take the output of the fht
   for (byte i = 0 ; i < FHT_N/2 ; i++) {
      Serial.print(fht_log_out[i]);
      Serial.print(" ");
   }
   Serial.println();
}