From 83ae37b48e90c29cb9775717a10daa085b9f5d63 Mon Sep 17 00:00:00 2001
From: Yvonne-Anne Pignolet <yvonneanne.pignolet@gmail.com>
Date: Tue, 11 Dec 2012 12:09:33 +0100
Subject: [PATCH] Add access to LQI and RSSI to Contiki motes

---
 platform/cooja/dev/cooja-radio.c               | 10 ++++++++++
 platform/cooja/dev/cooja-radio.h               |  7 +++++++
 .../contikimote/interfaces/ContikiRadio.java   | 18 ++++++++++++++++++
 3 files changed, 35 insertions(+)

diff --git a/platform/cooja/dev/cooja-radio.c b/platform/cooja/dev/cooja-radio.c
index d30bf61c6..4c5c53593 100644
--- a/platform/cooja/dev/cooja-radio.c
+++ b/platform/cooja/dev/cooja-radio.c
@@ -62,6 +62,7 @@ int simSignalStrength = -100;
 int simLastSignalStrength = -100;
 char simPower = 100;
 int simRadioChannel = 26;
+int simLQI = 105;
 
 static const void *pending_data;
 
@@ -93,6 +94,12 @@ radio_signal_strength_current(void)
   return simSignalStrength;
 }
 /*---------------------------------------------------------------------------*/
+int
+radio_LQI(void)
+{
+	return simLQI;
+}
+/*---------------------------------------------------------------------------*/
 static int
 radio_on(void)
 {
@@ -145,6 +152,9 @@ radio_read(void *buf, unsigned short bufsize)
 
   memcpy(buf, simInDataBuffer, simInSize);
   simInSize = 0;
+  packetbuf_set_attr(PACKETBUF_ATTR_RSSI, simSignalStrength);
+  packetbuf_set_attr(PACKETBUF_ATTR_LINK_QUALITY, simLQI);
+
   return tmp;
 }
 /*---------------------------------------------------------------------------*/
diff --git a/platform/cooja/dev/cooja-radio.h b/platform/cooja/dev/cooja-radio.h
index 7c3f5e31f..40873c9cb 100644
--- a/platform/cooja/dev/cooja-radio.h
+++ b/platform/cooja/dev/cooja-radio.h
@@ -64,4 +64,11 @@ radio_signal_strength_last(void);
 int
 radio_signal_strength_current(void);
 
+/**
+ * Link quality indicator of last received packet.
+ */
+int
+radio_LQI(void);
+
+
 #endif /* __COOJA_RADIO_H__ */
diff --git a/tools/cooja/java/se/sics/cooja/contikimote/interfaces/ContikiRadio.java b/tools/cooja/java/se/sics/cooja/contikimote/interfaces/ContikiRadio.java
index 577e94046..9ad54714c 100644
--- a/tools/cooja/java/se/sics/cooja/contikimote/interfaces/ContikiRadio.java
+++ b/tools/cooja/java/se/sics/cooja/contikimote/interfaces/ContikiRadio.java
@@ -250,6 +250,24 @@ public class ContikiRadio extends Radio implements ContikiMoteInterface, PolledA
     myMoteMemory.setIntValueOf("simSignalStrength", (int) signalStrength);
   }
 
+  /** Set LQI to a value between 0 and 255.
+   * 
+   * @see se.sics.cooja.interfaces.Radio#setLQI(int)
+   */
+  public void setLQI(int lqi){
+    if(lqi<0) {
+      lqi=0;
+    }
+    else if(lqi>0xff) {
+      lqi=0xff;
+    }
+    myMoteMemory.setIntValueOf("simLQI", lqi);
+  }
+
+  public int getLQI(){
+    return myMoteMemory.getIntValueOf("simLQI");
+  }
+
   public Position getPosition() {
     return mote.getInterfaces().getPosition();
   }