Fix: Ext. timeout hang, examples, board support

- Initial support for Due and ATTiny boards - Fix for 0 timeout period causing hang - Remove unnecessary delays from startWrite - Cleaned up/Updated example files - Optimization is nearing completion
2014-04-01 23:47:19 -06:00
parent 6263bccd02
commit 2f7e4489ba
31 changed files with 1437 additions and 2638 deletions
@@ -0,0 +1,142 @@
+/*
+ Copyright (C) 2012 J. Coliz <maniacbug@ymail.com>
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License
+ version 2 as published by the Free Software Foundation.
+ */
+
+/**
+ * Example Nordic FOB Receiver 
+ *
+ * This is an example of how to use the RF24 class to receive signals from the
+ * Sparkfun Nordic FOB.  Thanks to Kirk Mower for providing test hardware.
+ *
+ * See blog post at http://maniacbug.wordpress.com/2012/01/08/nordic-fob/
+ */
+
+#include <SPI.h>
+#include <RF24.h>
+#include "nRF24L01.h"
+#include "printf.h"
+
+//
+// Hardware configuration
+//
+
+// Set up nRF24L01 radio on SPI bus plus pins 9 & 10
+
+RF24 radio(9,10);
+
+//
+// Payload
+//
+
+struct payload_t
+{
+  uint8_t buttons;
+  uint16_t id;
+  uint8_t empty;
+};
+
+const char* button_names[] = { "Up", "Down", "Left", "Right", "Center" }; 
+const int num_buttons = 5;
+
+//
+// Forward declarations
+//
+
+uint16_t flip_endian(uint16_t in);
+
+//
+// Setup
+//
+
+void setup(void)
+{
+  //
+  // Print preamble
+  //
+
+  Serial.begin(57600);
+  printf_begin();
+  printf("\r\nRF24/examples/nordic_fob/\r\n");
+
+  //
+  // Setup and configure rf radio according to the built-in parameters
+  // of the FOB.
+  //
+
+  radio.begin();
+  radio.setChannel(2);
+  radio.setPayloadSize(4);
+  radio.setAutoAck(false);
+  radio.setCRCLength(RF24_CRC_8);
+  radio.openReadingPipe(1,0xE7E7E7E7E7LL);
+
+  //
+  // Start listening
+  //
+
+  radio.startListening();
+
+  //
+  // Dump the configuration of the rf unit for debugging
+  //
+
+  radio.printDetails();
+}
+
+//
+// Loop
+//
+
+void loop(void)
+{
+  //
+  // Receive each packet, dump it out
+  //
+
+    // if there is data ready
+    if ( radio.available() )
+    {
+      // Get the packet from the radio
+      payload_t payload;
+      radio.read( &payload, sizeof(payload) );
+
+      // Print the ID of this message.  Note that the message
+      // is sent 'big-endian', so we have to flip it.
+      printf("#%05u Buttons ",flip_endian(payload.id));
+
+      // Print the name of each button 
+      int i = num_buttons;
+      while (i--)
+      {
+	if ( ! ( payload.buttons & _BV(i) ) )
+	{
+	  printf("%s ",button_names[i]);
+	}
+      }
+
+      // If no buttons, print None
+      if ( payload.buttons == _BV(num_buttons) - 1 )
+	printf("None");
+
+      printf("\r\n");
+    }
+}
+
+//
+// Helper functions
+//
+
+// Change a big-endian word into a little-endian
+uint16_t flip_endian(uint16_t in)
+{
+  uint16_t low = in >> 8;
+  uint16_t high = in << 8;
+
+  return high | low;
+}
+
+// vim:cin:ai:sts=2 sw=2 ft=cpp