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nrf24_ping_client_8pde-example.html

nrf24_ping_client_8pde-example.html 9.6 KB
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  7. <title>NRF24: nrf24_ping_client.pde</title>
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  20.    <div id="projectname">NRF24
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  31.       <li><a href="index.html"><span>Main&#160;Page</span></a></li>
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    38. 

  38. <div class="header">
    39. 

  39.   <div class="headertitle">
    40. 

  40. <div class="title">nrf24_ping_client.pde</div>  </div>
    41. 

  41. </div><!--header-->
    42. 

  42. <div class="contents">
    43. 

  43. <p>Example sketch showing how to create a simple messageing client with the <a class="el" href="classNRF24.html" title="Send and receive addressed, reliable, acknowledged datagrams by nRF24L01. ">NRF24</a> class. It is designed to work with the example nrf24_ping_server It also works with ping_server from the Mirf library</p>
    44. 

  44. <div class="fragment"><div class="line"><span class="comment">// nrf24_ping_client.pde</span></div>
    45. 

  45. <div class="line"><span class="comment">// -*- mode: C++ -*-</span></div>
    46. 

  46. <div class="line"><span class="comment">// Example sketch showing how to create a simple messageing client</span></div>
    47. 

  47. <div class="line"><span class="comment">// with the NRF24 class. </span></div>
    48. 

  48. <div class="line"><span class="comment">// It is designed to work with the example nrf24_ping_server</span></div>
    49. 

  49. <div class="line"><span class="comment">// It also works with ping_server from the Mirf library</span></div>
    50. 

  50. <div class="line"></div>
    51. 

  51. <div class="line"><span class="preprocessor">#include &lt;NRF24.h&gt;</span></div>
    52. 

  52. <div class="line"><span class="preprocessor">#include &lt;SPI.h&gt;</span></div>
    53. 

  53. <div class="line"></div>
    54. 

  54. <div class="line"></div>
    55. 

  55. <div class="line"><span class="comment">// Singleton instance of the radio</span></div>
    56. 

  56. <div class="line"><a name="_a0"></a><a class="code" href="classNRF24.html">NRF24</a> nrf24;</div>
    57. 

  57. <div class="line"><span class="comment">// NRF24 nrf24(8, 7); // use this to be electrically compatible with Mirf</span></div>
    58. 

  58. <div class="line"><span class="comment">// NRF24 nrf24(8, 10);// For Leonardo, need explicit SS pin</span></div>
    59. 

  59. <div class="line"></div>
    60. 

  60. <div class="line"><span class="keywordtype">void</span> setup() </div>
    61. 

  61. <div class="line">{</div>
    62. 

  62. <div class="line">  Serial.begin(9600);</div>
    63. 

  63. <div class="line"></div>
    64. 

  64. <div class="line">  <span class="keywordflow">while</span> (!Serial) </div>
    65. 

  65. <div class="line">    ; <span class="comment">// wait for serial port to connect. Needed for Leonardo only</span></div>
    66. 

  66. <div class="line">  <span class="keywordflow">if</span> (!nrf24.<a name="a1"></a><a class="code" href="classNRF24.html#a6e98cf508939240c1805245170a995f6">init</a>())</div>
    67. 

  67. <div class="line">    Serial.println(<span class="stringliteral">&quot;NRF24 init failed&quot;</span>);</div>
    68. 

  68. <div class="line">  <span class="comment">// Defaults after init are 2.402 GHz (channel 2)</span></div>
    69. 

  69. <div class="line">  <span class="comment">// Now be compatible with Mirf ping_server</span></div>
    70. 

  70. <div class="line">  <span class="keywordflow">if</span> (!nrf24.<a name="a2"></a><a class="code" href="classNRF24.html#a3fa90005f98eb2744a533899f9b7e023">setChannel</a>(1))</div>
    71. 

  71. <div class="line">    Serial.println(<span class="stringliteral">&quot;setChannel failed&quot;</span>);</div>
    72. 

  72. <div class="line">  <span class="keywordflow">if</span> (!nrf24.<a name="a3"></a><a class="code" href="classNRF24.html#ade21e0bd4f92d0dfa45909bbbb0e4b01">setThisAddress</a>((uint8_t*)<span class="stringliteral">&quot;clie1&quot;</span>, 5))</div>
    73. 

  73. <div class="line">    Serial.println(<span class="stringliteral">&quot;setThisAddress failed&quot;</span>);</div>
    74. 

  74. <div class="line">  <span class="keywordflow">if</span> (!nrf24.<a name="a4"></a><a class="code" href="classNRF24.html#adb2fbd1d1aadaad1e9b268508149b6c8">setPayloadSize</a>(<span class="keyword">sizeof</span>(<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span>)))</div>
    75. 

  75. <div class="line">    Serial.println(<span class="stringliteral">&quot;setPayloadSize failed&quot;</span>);</div>
    76. 

  76. <div class="line">  <span class="keywordflow">if</span> (!nrf24.<a name="a5"></a><a class="code" href="classNRF24.html#a3453db8390d5be4aa99d8c7fde3062a4">setRF</a>(<a name="a6"></a><a class="code" href="classNRF24.html#a52d7af9188397d4a6f5dab55d4f04742aca0c89dd1b40bdc57b7026d8da54de9a">NRF24::NRF24DataRate2Mbps</a>, <a name="a7"></a><a class="code" href="classNRF24.html#a8386e81a9a4b824ab26e785879684c7eacef1d6c037e276e6dadaff2b6056ec0c">NRF24::NRF24TransmitPower0dBm</a>))</div>
    77. 

  77. <div class="line">    Serial.println(<span class="stringliteral">&quot;setRF failed&quot;</span>);    </div>
    78. 

  78. <div class="line"></div>
    79. 

  79. <div class="line">  Serial.println(<span class="stringliteral">&quot;initialised&quot;</span>);</div>
    80. 

  80. <div class="line">}</div>
    81. 

  81. <div class="line"></div>
    82. 

  82. <div class="line"><span class="comment">// With printing commented and delay removed, this can achieve about 666 round trips per second</span></div>
    83. 

  83. <div class="line"><span class="keywordtype">void</span> loop()</div>
    84. 

  84. <div class="line">{</div>
    85. 

  85. <div class="line"><span class="comment">//  Serial.println(&quot;send&quot;);</span></div>
    86. 

  86. <div class="line">  </div>
    87. 

  87. <div class="line">  <span class="comment">// Send some data to the server</span></div>
    88. 

  88. <div class="line">  <span class="keywordflow">if</span> (!nrf24.<a name="a8"></a><a class="code" href="classNRF24.html#a7b40c4c481bddf343acdac5179fddc75">setTransmitAddress</a>((uint8_t*)<span class="stringliteral">&quot;serv1&quot;</span>, 5))</div>
    89. 

  89. <div class="line">    Serial.println(<span class="stringliteral">&quot;setTransmitAddress failed&quot;</span>);</div>
    90. 

  90. <div class="line"></div>
    91. 

  91. <div class="line">  <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> time = millis();</div>
    92. 

  92. <div class="line">  <span class="keywordflow">if</span> (!nrf24.<a name="a9"></a><a class="code" href="classNRF24.html#aad280539b80b28e55ab3187714bc7f2f">send</a>((uint8_t*)&amp;time, <span class="keyword">sizeof</span>(time)))</div>
    93. 

  93. <div class="line">      Serial.println(<span class="stringliteral">&quot;send failed&quot;</span>);  </div>
    94. 

  94. <div class="line">   <span class="keywordflow">if</span> (!nrf24.<a name="a10"></a><a class="code" href="classNRF24.html#a78a011cddedb14b8764ad5ea760c28ae">waitPacketSent</a>())</div>
    95. 

  95. <div class="line">      Serial.println(<span class="stringliteral">&quot;waitPacketSent failed&quot;</span>); </div>
    96. 

  96. <div class="line"><span class="comment">//     Serial.println(&quot;Sent&quot;);   </span></div>
    97. 

  97. <div class="line">  </div>
    98. 

  98. <div class="line">  <span class="keywordflow">if</span> (nrf24.<a name="a11"></a><a class="code" href="classNRF24.html#ae36ca859ea942a6e9480e8747a27921e">waitAvailableTimeout</a>(100))</div>
    99. 

  99. <div class="line">  {</div>
    100. 

  100. <div class="line">    <span class="comment">// Server should send the same time back to us</span></div>
    101. 

  101. <div class="line"></div>
    102. 

  102. <div class="line">     <span class="comment">//    Serial.println(&quot;available&quot;);</span></div>
    103. 

  103. <div class="line">    <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> data;</div>
    104. 

  104. <div class="line">    uint8_t len = <span class="keyword">sizeof</span>(data);</div>
    105. 

  105. <div class="line">    <span class="keywordflow">if</span> (!nrf24.<a name="a12"></a><a class="code" href="classNRF24.html#a12799e0afcb52f2a8cb7418dca9e0eab">recv</a>((uint8_t*)&amp;data, &amp;len))</div>
    106. 

  106. <div class="line">      Serial.println(<span class="stringliteral">&quot;read failed&quot;</span>);</div>
    107. 

  107. <div class="line"></div>
    108. 

  108. <div class="line">   <span class="comment">// Compute the round trip time. This is the time to send one (acknowledged) message (with data) </span></div>
    109. 

  109. <div class="line">   <span class="comment">// to the server and </span></div>
    110. 

  110. <div class="line">   <span class="comment">// for the server to send one (acknowledged) reply (with data) back to us</span></div>
    111. 

  111. <div class="line">   <span class="comment">// Typical reported RTT is 1- 2 ms</span></div>
    112. 

  112. <div class="line">   <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> rtt = millis() - data;</div>
    113. 

  113. <div class="line">   Serial.print(<span class="stringliteral">&quot;Ping: &quot;</span>);</div>
    114. 

  114. <div class="line">   Serial.println(rtt);</div>
    115. 

  115. <div class="line"></div>
    116. 

  116. <div class="line">  }</div>
    117. 

  117. <div class="line">  <span class="keywordflow">else</span></div>
    118. 

  118. <div class="line">    Serial.println(<span class="stringliteral">&quot;No reply from server&quot;</span>);</div>
    119. 

  119. <div class="line"></div>
    120. 

  120. <div class="line">  delay(1000);  </div>
    121. 

  121. <div class="line">}</div>
    122. 

  122. <div class="line"></div>
    123. 

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    124. 

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    132.