New radio interface parameters: Rx poll mode, last packet timestamp, last packet rssi, last packet lqi. Implementation of these parameters for cc2420, with, in addition, runtime configuration of CCA before Tx, auto-ack and frame filtering

core/dev/radio.h

@@ -150,6 +150,12 @@ enum {
   /* Received signal strength indicator in dBm. */
   RADIO_PARAM_RSSI,
 
+  /* RSSI of the last received packet */
+  RADIO_PARAM_LAST_RSSI,
+
+  /* Link quality of the last received packet */
+  RADIO_PARAM_LAST_LINK_QUALITY,
+
   /*
    * Long (64 bits) address for the radio, which is used by the address filter.
    * The address is specified in network byte order.
@@ -159,6 +165,11 @@ enum {
    */
   RADIO_PARAM_64BIT_ADDR,
 
+  /* Last packet timestamp, of type rtimer_clock_t.
+   * Because this parameter value mat be larger than what fits in radio_value_t,
+   * it needs to be used with radio.get_object()/set_object(). */
+  RADIO_PARAM_LAST_PACKET_TIMESTAMP,
+
   /* Constants (read only) */
 
   /* The lowest radio channel. */
@@ -192,6 +203,7 @@ enum {
  */
 #define RADIO_RX_MODE_ADDRESS_FILTER   (1 << 0)
 #define RADIO_RX_MODE_AUTOACK          (1 << 1)
+#define RADIO_RX_MODE_POLL_MODE        (1 << 2)
 
 /**
  * The radio transmission mode controls whether transmissions should