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Optimizing channel table size for CCA in rf_environment example

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modified:   examples/rf_environment/rf_environment.c
This commit is contained in:
Robert Olsson 2017-05-11 14:20:12 +02:00
parent 71167f0ba6
commit ef9b00103e
1 changed files with 5 additions and 5 deletions
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10
examples/rf_environment/rf_environment.c
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@ -69,7 +69,7 @@ AUTOSTART_PROCESSES(&rf_scan_process);
*/ */
static struct etimer et; static struct etimer et;
static int cca[27], cca_thresh, chan, i, j, k; static int cca[16], cca_thresh, chan, i, j, k;
static uint16_t best, best_sum; static uint16_t best, best_sum;
static uint16_t worst, worst_sum; static uint16_t worst, worst_sum;
static double ave; static double ave;
@ -155,8 +155,8 @@ PROCESS_THREAD(rf_scan_process, ev, data)
for(k = -90; k <= -60; k += 2) { for(k = -90; k <= -60; k += 2) {
set_cca_thresh(k); set_cca_thresh(k);
for(j = 11; j <= 26; j++) { for(j = 0; j < 16; j++) {
set_chan(j); set_chan(j+11);
cca[j] = 0; cca[j] = 0;
#ifdef CONTIKI_TARGET_AVR_RSS2 #ifdef CONTIKI_TARGET_AVR_RSS2
watchdog_periodic(); watchdog_periodic();
@ -175,7 +175,7 @@ PROCESS_THREAD(rf_scan_process, ev, data)
best_sum = 0; best_sum = 0;
ave = 0; ave = 0;
for(j = 11; j <= 26; j++) { for(j = 0; j < 16; j++) {
ave += cca[j]; ave += cca[j];
printf(" %3d", 100 - (100 * cca[j]) / SAMPLES); printf(" %3d", 100 - (100 * cca[j]) / SAMPLES);
if(cca[j] > best_sum) { if(cca[j] > best_sum) {
@ -187,7 +187,7 @@ PROCESS_THREAD(rf_scan_process, ev, data)
worst = j; worst = j;
} }
} }
printf(" Best=%d Worst=%d Ave=%-5.2f\n", best, worst, 100 - (100 * (ave / 16) / SAMPLES)); printf(" Best=%d Worst=%d Ave=%-5.2f\n", (best+11) , (worst+11), 100 - (100 * (ave / 16) / SAMPLES));
} }
etimer_set(&et, CLOCK_SECOND / 2); etimer_set(&et, CLOCK_SECOND / 2);
} }