Updated some examples to show the new lib usage

Updated GettingStarted, pingpair, added medium speed version of transfer rate test
2014-03-19 20:23:33 -06:00
parent 63ee0ce2c0
commit 99571d6530
5 changed files with 419 additions and 74 deletions
@@ -0,0 +1,179 @@
+/*
+ Copyright (C) 2011 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 for Getting Started with nRF24L01+ radios. 
+ *
+ * This is an example of how to use the RF24 class.  Write this sketch to two 
+ * different nodes.  Put one of the nodes into 'transmit' mode by connecting 
+ * with the serial monitor and sending a 'T'.  The ping node sends the current 
+ * time to the pong node, which responds by sending the value back.  The ping 
+ * node can then see how long the whole cycle took.
+ */
+
+//March 2014 - TMRh20 - Updated to utilize High Speed RF24 Library fork
+//This 
+
+
+#include <SPI.h>
+#include "nRF24L01.h"
+#include "RF24.h"
+#include "printf.h"
+
+// Hardware configuration
+// Set up nRF24L01 radio on SPI bus plus pins 9 & 10 
+
+RF24 radio(48,49);
+
+// Topology
+// Radio pipe addresses for the 2 nodes to communicate.
+const uint64_t pipes[2] = { 0xABCDABCD71LL, 0x544d52687CLL };
+
+//
+// Role management
+// Set up role.  This sketch uses the same software for all the nodes
+// in this system.  Doing so greatly simplifies testing.  
+
+// The various roles supported by this sketch
+typedef enum { role_ping_out = 1, role_pong_back } role_e;
+
+// The debug-friendly names of those roles
+const char* role_friendly_name[] = { "invalid", "Ping out", "Pong back"};
+
+// The role of the current running sketch
+role_e role = role_pong_back;
+
+void setup(void)
+{
+  //
+  // Print preamble
+  //
+
+  Serial.begin(57600);
+  printf_begin();
+  printf("\n\rRF24/examples/GettingStarted/\n\r");
+  printf("ROLE: %s\n\r",role_friendly_name[role]);
+  printf("*** PRESS 'T' to begin transmitting to the other node\n\r");
+
+  //
+  // Setup and configure rf radio
+
+  radio.begin();
+  radio.setAutoAck(1);                    // Ensure autoACK is enabled
+
+  radio.setRetries(15,15);                // Optionally, increase the delay between retries & # of retries
+
+  radio.openWritingPipe(pipes[1]);
+  radio.openReadingPipe(1,pipes[0]);
+
+  radio.startListening();                 // Start listening
+
+  radio.printDetails();                   // Dump the configuration of the rf unit for debugging
+}
+
+void loop(void)
+{
+  //
+  // Ping out role.  Repeatedly send the current time
+  //
+
+  if (role == role_ping_out)
+  {
+    
+    radio.stopListening();                                  // First, stop listening so we can talk.
+    
+    unsigned long time = millis();                          // Take the time, and send it.  This will block until complete
+    printf("Now sending %lu...",time);
+    bool ok = radio.writeFast( &time, sizeof(unsigned long) );//New function for proper use of FIFO buffers
+    while( ! radio.txStandBy() ){}                          //Called when STANDBY-I mode is engaged (User is finished sending)
+    if (!ok)
+      printf("failed.\n\r");
+    
+    
+    radio.startListening();                                 // Now, continue listening
+    
+    unsigned long started_waiting_at = millis();            // Wait here until we get a response, or timeout (250ms)
+    bool timeout = false;
+    while ( ! radio.available() && ! timeout )
+      if (millis() - started_waiting_at > 200 )
+        timeout = true;
+        
+    if ( timeout )                                          // Describe the results
+    {
+      printf("Failed, response timed out.\n\r");
+    }
+    else
+    {
+      unsigned long got_time;                               // Grab the response, compare, and send to debugging spew
+      radio.read( &got_time, sizeof(unsigned long) );
+      unsigned long tim = millis();
+      // Spew it
+      printf("Got response %lu, round-trip delay: %lu\n\r",got_time,tim-got_time);
+    }
+
+    // Try again 1s later
+    delay(1000);
+  }
+
+  //
+  // Pong back role.  Receive each packet, dump it out, and send it back
+  //
+
+  if ( role == role_pong_back )
+  {
+    if( radio.available()){
+      unsigned long got_time;                                       // Dump the payloads until we've gotten everything
+      bool done = false;
+      while (radio.available()) {                                   // While there is data ready
+        // Fetch the payload, and see if this was the last one.
+        radio.read( &got_time, sizeof(unsigned long) );
+      }    
+        // Spew it
+        //printf("Got payload %lu...",got_time);
+
+	// Delay just a little bit to let the other unit
+	// make the transition to receiver
+	//delay(2);
+     
+      radio.stopListening();                                          // First, stop listening so we can talk
+     
+      radio.write( &got_time, sizeof(unsigned long) );                // Send the final one back.      
+      
+      radio.startListening();                                         // Now, resume listening so we catch the next packets.
+      
+      //printf("Sent response.\n\r");
+    
+   }
+ }
+
+  //
+  // Change roles
+  //
+
+  if ( Serial.available() )
+  {
+    char c = toupper(Serial.read());
+    if ( c == 'T' && role == role_pong_back )
+    {
+      printf("*** CHANGING TO TRANSMIT ROLE -- PRESS 'R' TO SWITCH BACK\n\r");
+
+      role = role_ping_out;                  // Become the primary transmitter (ping out)
+      //radio.openWritingPipe(pipes[0]);
+      //radio.openReadingPipe(1,pipes[1]);
+    }
+    else if ( c == 'R' && role == role_ping_out )
+    {
+      printf("*** CHANGING TO RECEIVE ROLE -- PRESS 'T' TO SWITCH BACK\n\r");
+      
+       role = role_pong_back;                // Become the primary receiver (pong back)
+      //radio.openWritingPipe(pipes[1]);
+      //radio.openReadingPipe(1,pipes[0]);
+    }
+  }
+}
+// vim:cin:ai:sts=2 sw=2 ft=cpp