Reincarnate the sensinode/cc2430 port

2012-03-05 16:28:06 +00:00 · 2012-03-05 16:28:06 +00:00 · b7674c3636
commit b7674c3636
parent c78b5bad5c
114 changed files with 10044 additions and 3068 deletions
--- a/examples/sensinode/energy-scan/energy-scan.c
+++ b/examples/sensinode/energy-scan/energy-scan.c
@ -0,0 +1,108 @@
+/*
+ * Copyright (c) 2010, Loughborough University - Computer Science
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the Contiki operating system.
+ */
+
+/**
+ * \file
+ *         Minimalistic channel energy detection.
+ *
+ * \author
+ *         George Oikonomou - <oikonomou@users.sourceforge.net>
+ */
+
+#include "contiki.h"
+#include "cc2430_sfr.h"
+
+#include "sensinode-debug.h"
+#include "dev/cc2430_rf.h"
+#include <stdio.h>
+
+static uint8_t channel;
+static int8_t j;
+static int8_t cmax;
+static int8_t rssi;
+static struct etimer et;
+static rtimer_clock_t t0;
+
+#define RSSI_BASE    -50
+#define RSSI_SAMPLES  30
+#define SAMPLE_INTERVAL (CLOCK_SECOND)
+#define CHANNEL_MIN 11
+#define CHANNEL_MAX 26
+/* ToDo: Do this in infinite RX. Take more samples */
+/*---------------------------------------------------------------------------*/
+PROCESS(energy_scan, "Energy Scanner");
+AUTOSTART_PROCESSES(&energy_scan);
+/*---------------------------------------------------------------------------*/
+PROCESS_THREAD(energy_scan, ev, data)
+{
+
+  PROCESS_BEGIN();
+
+  printf("Energy Scanner\n");
+  printf("CCA Threshold: %d\n", (int8_t)RSSIH);
+  printf("Channel scan range: [%u , %u]\n", CHANNEL_MIN, CHANNEL_MAX);
+  printf("%u samples per channel, interval %u ticks\n",
+      RSSI_SAMPLES, SAMPLE_INTERVAL);
+
+  channel = CHANNEL_MIN;
+  while(1) {
+    cmax = RSSI_BASE;
+    cc2430_rf_channel_set(channel);
+    clock_delay(200);
+
+    for(j = 0; j < RSSI_SAMPLES; j++) {
+      t0 = RTIMER_NOW();
+      rssi = RSSIL;
+      if(rssi > cmax) {
+        cmax = rssi;
+      }
+      while(RTIMER_CLOCK_LT(RTIMER_NOW(), t0 + 25));
+    }
+    printf("%u [%3d]: ", channel, cmax);
+    for(j = RSSI_BASE; j <= cmax; j++) {
+      printf("#");
+    }
+    printf("\n");
+    if(channel == CHANNEL_MAX) {
+      printf("===============\n");
+      channel = CHANNEL_MIN;
+    } else {
+      channel++;
+    }
+
+    etimer_set(&et, SAMPLE_INTERVAL);
+    PROCESS_YIELD();
+
+  }
+
+  PROCESS_END();
+}
+/*---------------------------------------------------------------------------*/