Added setRetries()

RF24.cpp

@@ -631,5 +631,12 @@ void RF24::setCRCLength(rf24_crclength_e length)
   write_register(CONFIG,config);
 }
 
+/******************************************************************/
+
+void RF24::setRetries(uint8_t delay, uint8_t count)
+{
+  write_register(SETUP_RETR,(delay&0xf)<<ARD | (count&0xf)<<ARC);
+}
+
 // vim:ai:cin:sts=2 sw=2 ft=cpp
 

RF24.h

@@ -332,6 +332,15 @@ class RF24
      */
     /**@{*/
 
+    /**
+     * Set the number and delay of retries upon failed submit
+     *
+     * @param delay How long to wait between each retry, in multiples of 250us,
+     * max is 15.  0 means 250us, 15 means 4000us.
+     * @param count How many retries before giving up, max 15
+     */
+    void setRetries(uint8_t delay, uint8_t count);
+
     /**
      * Set RF communication channel
      *

examples/pingpair/pingpair.pde

@@ -90,6 +90,12 @@ void setup(void)
 
   radio.begin();
 
+  // optionally, increase the delay between retries & # of retries
+  radio.setRetries(15,15); 
+
+  // optionally, use a high channel to avoid WiFi chatter
+  radio.setChannel(110);
+
   //
   // Open pipes to other nodes for communication
   //
@@ -201,4 +207,4 @@ void loop(void)
     }
   }
 }
-// vim:ci sts=2 sw=2 ft=cpp
+// vim:cin:ai:sts=2 sw=2 ft=cpp