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modified API for fft

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This commit is contained in:
joxe 2008-04-25 22:12:25 +00:00
parent 8b30087ce4
commit 7722a73abf
3 changed files with 23 additions and 16 deletions
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9
examples/esb/fft-test.c
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@ -26,7 +26,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: fft-test.c,v 1.1 2008/04/25 16:34:31 joxe Exp $
* $Id: fft-test.c,v 1.2 2008/04/25 22:12:25 joxe Exp $
*
* -----------------------------------------------------------------
* fft-test - a test program that use the sound sensor for sampling
@ -35,8 +35,8 @@
*
* Author : Joakim Eriksson
* Created : 2008-04-04
* Updated : $Date: 2008/04/25 16:34:31 $
* $Revision: 1.1 $
* Updated : $Date: 2008/04/25 22:12:25 $
* $Revision: 1.2 $
*/
#include "contiki-esb.h"
@ -57,6 +57,7 @@ PROCESS_THREAD(fft_process, ev, data)
static int i = 0;
static int mode = 0;
static int16_t fftBuf[FFT_TEST_SIZE];
static int16_t tmpBuf[FFT_TEST_SIZE];
static int max_value = 0;
static int max_pos = 0;
@ -92,7 +93,7 @@ PROCESS_THREAD(fft_process, ev, data)
if (mode) {
/* Calculate fft, print result, and find index of
highest energy level */
ifft(fftBuf, FFT_TEST_SIZE);
ifft(fftBuf, tmpBuf, FFT_TEST_SIZE);
max_value = 0;
max_pos = 0;
for (i = 0; i < FFT_TEST_SIZE/2; i++) {