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<div id="projectbrief">Universal wireless communication library for Arduino</div>
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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="preprocessor">#ifndef PICO_HAL_H</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="preprocessor">#define PICO_HAL_H</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span> </div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment">// include RadioLib</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="preprocessor">#include &lt;RadioLib.h&gt;</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span> </div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment">// include the necessary Pico libraries</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="preprocessor">#include &lt;pico/stdlib.h&gt;</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#include &quot;hardware/spi.h&quot;</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="preprocessor">#include &quot;hardware/timer.h&quot;</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="preprocessor">#include &quot;hardware/pwm.h&quot;</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="preprocessor">#include &quot;hardware/clocks.h&quot;</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="preprocessor">#include &quot;pico/multicore.h&quot;</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span> </div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span>uint32_t toneLoopPin;</div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> toneLoopFrequency;</div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> toneLoopDuration;</div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span> </div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="comment">// pre-calculated pulse-widths for 1200 and 2200Hz</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="comment">// we do this to save calculation time (see https://github.com/khoih-prog/RP2040_PWM/issues/6)</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#define SLEEP_1200 416.666</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#define SLEEP_2200 227.272</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> </div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="comment">// === NOTE ===</span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="comment">// The tone(...) implementation uses the second core on the RPi Pico. This is to diminish as much </span></div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="comment">// jitter in the output tones as possible.</span></div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> </div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="keywordtype">void</span> toneLoop(){</div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> gpio_set_dir(toneLoopPin, GPIO_OUT);</div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> </div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> uint32_t sleep_dur;</div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> <span class="keywordflow">if</span> (toneLoopFrequency == 1200) {</div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> sleep_dur = SLEEP_1200;</div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (toneLoopFrequency == 2200) {</div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> sleep_dur = SLEEP_2200;</div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> sleep_dur = 500000 / toneLoopFrequency;</div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> }</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> </div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> </div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> <span class="comment">// tone bitbang</span></div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> <span class="keywordflow">while</span>(1){</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> gpio_put(toneLoopPin, 1);</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> sleep_us(sleep_dur);</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> gpio_put(toneLoopPin, 0);</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> sleep_us(sleep_dur);</div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> tight_loop_contents();</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> }</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span>}</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> </div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span><span class="comment">// create a new Raspberry Pi Pico hardware abstraction </span></div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span><span class="comment">// layer using the Pico SDK</span></div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span><span class="comment">// the HAL must inherit from the base RadioLibHal class</span></div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span><span class="comment">// and implement all of its virtual methods</span></div>
<div class="foldopen" id="foldopen00055" data-start="{" data-end="};">
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"><a class="line" href="class_pico_hal.html"> 55</a></span><span class="keyword">class </span><a class="code hl_class" href="class_pico_hal.html">PicoHal</a> : <span class="keyword">public</span> <a class="code hl_class" href="class_radio_lib_hal.html">RadioLibHal</a> {</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> <a class="code hl_class" href="class_pico_hal.html">PicoHal</a>(spi_inst_t *spiChannel, uint32_t misoPin, uint32_t mosiPin, uint32_t sckPin, uint32_t spiSpeed = 500 * 1000)</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> : <a class="code hl_class" href="class_radio_lib_hal.html">RadioLibHal</a>(GPIO_IN, GPIO_OUT, 0, 1, GPIO_IRQ_EDGE_RISE, GPIO_IRQ_EDGE_FALL),</div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> _spiChannel(spiChannel),</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> _spiSpeed(spiSpeed),</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> _misoPin(misoPin),</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> _mosiPin(mosiPin),</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> _sckPin(sckPin){}</div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> </div>
<div class="foldopen" id="foldopen00065" data-start="{" data-end="}">
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"><a class="line" href="class_pico_hal.html#a9eea222b674b9f36c68dfb8db3bbf096"> 65</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="class_pico_hal.html#a9eea222b674b9f36c68dfb8db3bbf096">init</a>()<span class="keyword"> override </span>{</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> stdio_init_all();</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> <a class="code hl_function" href="class_pico_hal.html#a414de51bef859659b8cac66df32bdb5a">spiBegin</a>();</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> }</div>
</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> </div>
<div class="foldopen" id="foldopen00070" data-start="{" data-end="}">
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"><a class="line" href="class_pico_hal.html#a27803b7a0b53dca9fd1c74eadb15755a"> 70</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="class_pico_hal.html#a27803b7a0b53dca9fd1c74eadb15755a">term</a>()<span class="keyword"> override </span>{</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> <a class="code hl_function" href="class_pico_hal.html#ac932d26b6a31a0cd7f577d4f8812896c">spiEnd</a>();</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> }</div>
</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> </div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> <span class="comment">// GPIO-related methods (pinMode, digitalWrite etc.) should check</span></div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> <span class="comment">// RADIOLIB_NC as an alias for non-connected pins</span></div>
<div class="foldopen" id="foldopen00076" data-start="{" data-end="}">
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"><a class="line" href="class_pico_hal.html#ac539134f4517ef79de49832bb86392f2"> 76</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="class_pico_hal.html#ac539134f4517ef79de49832bb86392f2">pinMode</a>(uint32_t pin, uint32_t mode)<span class="keyword"> override </span>{</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> <span class="keywordflow">if</span> (pin == RADIOLIB_NC) {</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> }</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> </div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> gpio_init(pin);</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> gpio_set_dir(pin, mode);</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> }</div>
</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> </div>
<div class="foldopen" id="foldopen00085" data-start="{" data-end="}">
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"><a class="line" href="class_pico_hal.html#a4f5e06e79f6f6b7952243fe3817200b4"> 85</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="class_pico_hal.html#a4f5e06e79f6f6b7952243fe3817200b4">digitalWrite</a>(uint32_t pin, uint32_t value)<span class="keyword"> override </span>{</div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> <span class="keywordflow">if</span> (pin == RADIOLIB_NC) {</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> }</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> </div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> gpio_put(pin, (<span class="keywordtype">bool</span>)value);</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> }</div>
</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> </div>
<div class="foldopen" id="foldopen00093" data-start="{" data-end="}">
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"><a class="line" href="class_pico_hal.html#a25993f76cf572e1a891b7ecc777721c2"> 93</a></span> uint32_t <a class="code hl_function" href="class_pico_hal.html#a25993f76cf572e1a891b7ecc777721c2">digitalRead</a>(uint32_t pin)<span class="keyword"> override </span>{</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> <span class="keywordflow">if</span> (pin == RADIOLIB_NC) {</div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> }</div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> </div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> <span class="keywordflow">return</span> gpio_get(pin);</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> }</div>
</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> </div>
<div class="foldopen" id="foldopen00101" data-start="{" data-end="}">
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"><a class="line" href="class_pico_hal.html#a960f5c3890a0ee6fd339d93ca9769c62"> 101</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="class_pico_hal.html#a960f5c3890a0ee6fd339d93ca9769c62">attachInterrupt</a>(uint32_t interruptNum, <span class="keywordtype">void</span> (*interruptCb)(<span class="keywordtype">void</span>), uint32_t mode)<span class="keyword"> override </span>{</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <span class="keywordflow">if</span> (interruptNum == RADIOLIB_NC) {</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> }</div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> </div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> gpio_set_irq_enabled_with_callback(interruptNum, GPIO_IRQ_EDGE_RISE | GPIO_IRQ_EDGE_FALL, <span class="keyword">true</span>, (gpio_irq_callback_t)interruptCb);</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> }</div>
</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> </div>
<div class="foldopen" id="foldopen00109" data-start="{" data-end="}">
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"><a class="line" href="class_pico_hal.html#a323d56fc8637f2b005070c7585bfe82e"> 109</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="class_pico_hal.html#a323d56fc8637f2b005070c7585bfe82e">detachInterrupt</a>(uint32_t interruptNum)<span class="keyword"> override </span>{</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> <span class="keywordflow">if</span> (interruptNum == RADIOLIB_NC) {</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> }</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> </div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> gpio_set_irq_enabled_with_callback(interruptNum, GPIO_IRQ_EDGE_RISE | GPIO_IRQ_EDGE_FALL, <span class="keyword">false</span>, NULL);</div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> }</div>
</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> </div>
<div class="foldopen" id="foldopen00117" data-start="{" data-end="}">
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"><a class="line" href="class_pico_hal.html#a1bab4dfe568d7107e569e848001e414a"> 117</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="class_pico_hal.html#a1bab4dfe568d7107e569e848001e414a">delay</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> ms)<span class="keyword"> override </span>{</div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> sleep_ms(ms);</div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> }</div>
</div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> </div>
<div class="foldopen" id="foldopen00121" data-start="{" data-end="}">
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"><a class="line" href="class_pico_hal.html#a4a69597cf1a071a0fa61d1d292008628"> 121</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="class_pico_hal.html#a4a69597cf1a071a0fa61d1d292008628">delayMicroseconds</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> us)<span class="keyword"> override </span>{</div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> sleep_us(us);</div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> }</div>
</div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> </div>
<div class="foldopen" id="foldopen00125" data-start="{" data-end="}">
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"><a class="line" href="class_pico_hal.html#a4e82e02b4de6d1c192f52fb0ddd1c9c4"> 125</a></span> <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <a class="code hl_function" href="class_pico_hal.html#a4e82e02b4de6d1c192f52fb0ddd1c9c4">millis</a>()<span class="keyword"> override </span>{</div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> <span class="keywordflow">return</span> to_ms_since_boot(get_absolute_time());</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> }</div>
</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> </div>
<div class="foldopen" id="foldopen00129" data-start="{" data-end="}">
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"><a class="line" href="class_pico_hal.html#a3eb9710f7b7702c9035833a4f8176038"> 129</a></span> <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <a class="code hl_function" href="class_pico_hal.html#a3eb9710f7b7702c9035833a4f8176038">micros</a>()<span class="keyword"> override </span>{</div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> <span class="keywordflow">return</span> to_us_since_boot(get_absolute_time());</div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> }</div>
</div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> </div>
<div class="foldopen" id="foldopen00133" data-start="{" data-end="}">
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"><a class="line" href="class_pico_hal.html#a504806e3adb1a5b9f6784478bae16c10"> 133</a></span> <span class="keywordtype">long</span> <a class="code hl_function" href="class_pico_hal.html#a504806e3adb1a5b9f6784478bae16c10">pulseIn</a>(uint32_t pin, uint32_t state, <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> timeout)<span class="keyword"> override </span>{</div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> <span class="keywordflow">if</span> (pin == RADIOLIB_NC) {</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> }</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> </div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> this-&gt;<a class="code hl_function" href="class_pico_hal.html#ac539134f4517ef79de49832bb86392f2">pinMode</a>(pin, GPIO_IN);</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> uint32_t start = this-&gt;<a class="code hl_function" href="class_pico_hal.html#a3eb9710f7b7702c9035833a4f8176038">micros</a>();</div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> uint32_t curtick = this-&gt;<a class="code hl_function" href="class_pico_hal.html#a3eb9710f7b7702c9035833a4f8176038">micros</a>();</div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> </div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> <span class="keywordflow">while</span> (this-&gt;<a class="code hl_function" href="class_pico_hal.html#a25993f76cf572e1a891b7ecc777721c2">digitalRead</a>(pin) == state) {</div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> <span class="keywordflow">if</span> ((this-&gt;<a class="code hl_function" href="class_pico_hal.html#a3eb9710f7b7702c9035833a4f8176038">micros</a>() - curtick) &gt; timeout) {</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> }</div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> }</div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> </div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> <span class="keywordflow">return</span> (this-&gt;<a class="code hl_function" href="class_pico_hal.html#a3eb9710f7b7702c9035833a4f8176038">micros</a>() - start);</div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> }</div>
</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> </div>
<div class="foldopen" id="foldopen00151" data-start="{" data-end="}">
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"><a class="line" href="class_pico_hal.html#abfa0319db88b4c015edf67a9c9b671be"> 151</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="class_pico_hal.html#abfa0319db88b4c015edf67a9c9b671be">tone</a>(uint32_t pin, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> frequency, <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> duration = 0)<span class="keyword"> override </span>{</div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> <span class="comment">// tones on the Pico are generated using bitbanging. This process is offloaded to the Pico&#39;s second core</span></div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> multicore_reset_core1();</div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> toneLoopPin = pin;</div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> toneLoopFrequency = frequency;</div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> toneLoopDuration = duration;</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> multicore_launch_core1(toneLoop);</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> }</div>
</div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> </div>
<div class="foldopen" id="foldopen00160" data-start="{" data-end="}">
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"><a class="line" href="class_pico_hal.html#af80164483ca2bda3a7dd0cc795549524"> 160</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="class_pico_hal.html#af80164483ca2bda3a7dd0cc795549524">noTone</a>(uint32_t pin)<span class="keyword"> override </span>{</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> multicore_reset_core1();</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> }</div>
</div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> </div>
<div class="foldopen" id="foldopen00164" data-start="{" data-end="}">
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"><a class="line" href="class_pico_hal.html#a414de51bef859659b8cac66df32bdb5a"> 164</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="class_pico_hal.html#a414de51bef859659b8cac66df32bdb5a">spiBegin</a>() {</div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> spi_init(_spiChannel, _spiSpeed);</div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> spi_set_format(_spiChannel, 8, SPI_CPOL_0, SPI_CPHA_0, SPI_MSB_FIRST);</div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span> </div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> gpio_set_function(_sckPin, GPIO_FUNC_SPI);</div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span> gpio_set_function(_mosiPin, GPIO_FUNC_SPI);</div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> gpio_set_function(_misoPin, GPIO_FUNC_SPI);</div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span> }</div>
</div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span> </div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"><a class="line" href="class_pico_hal.html#a2b6136b2c90e83c1ab94bd92ef32805c"> 173</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="class_pico_hal.html#a2b6136b2c90e83c1ab94bd92ef32805c">spiBeginTransaction</a>() {}</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> </div>
<div class="foldopen" id="foldopen00175" data-start="{" data-end="}">
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"><a class="line" href="class_pico_hal.html#acc961bf30af621d0dfec2b3f7e25cf5c"> 175</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="class_pico_hal.html#acc961bf30af621d0dfec2b3f7e25cf5c">spiTransfer</a>(uint8_t *out, <span class="keywordtype">size_t</span> len, uint8_t *in) {</div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span> spi_write_read_blocking(_spiChannel, out, in, len);</div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> }</div>
</div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span> </div>
<div class="foldopen" id="foldopen00179" data-start="{" data-end="}">
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"><a class="line" href="class_pico_hal.html#add7d8e380c51f7fa2312aea2982878c2"> 179</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="class_pico_hal.html#add7d8e380c51f7fa2312aea2982878c2">yield</a>()<span class="keyword"> override </span>{</div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> tight_loop_contents();</div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> }</div>
</div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> </div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"><a class="line" href="class_pico_hal.html#ae6773c6f0aac24774614a3179a4da475"> 183</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="class_pico_hal.html#ae6773c6f0aac24774614a3179a4da475">spiEndTransaction</a>() {}</div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span> </div>
<div class="foldopen" id="foldopen00185" data-start="{" data-end="}">
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"><a class="line" href="class_pico_hal.html#ac932d26b6a31a0cd7f577d4f8812896c"> 185</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="class_pico_hal.html#ac932d26b6a31a0cd7f577d4f8812896c">spiEnd</a>() {</div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span> spi_deinit(_spiChannel);</div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> }</div>
</div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span> </div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> <span class="comment">// the HAL can contain any additional private members</span></div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span> spi_inst_t *_spiChannel;</div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span> uint32_t _spiSpeed;</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span> uint32_t _misoPin;</div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span> uint32_t _mosiPin;</div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span> uint32_t _sckPin;</div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span>};</div>
</div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span> </div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span><span class="preprocessor">#endif</span></div>
<div class="ttc" id="aclass_pico_hal_html"><div class="ttname"><a href="class_pico_hal.html">PicoHal</a></div><div class="ttdef"><b>Definition</b> PicoHal.h:55</div></div>
<div class="ttc" id="aclass_pico_hal_html_a1bab4dfe568d7107e569e848001e414a"><div class="ttname"><a href="class_pico_hal.html#a1bab4dfe568d7107e569e848001e414a">PicoHal::delay</a></div><div class="ttdeci">void delay(unsigned long ms) override</div><div class="ttdoc">Blocking wait function. Must be implemented by the platform-specific hardware abstraction!</div><div class="ttdef"><b>Definition</b> PicoHal.h:117</div></div>
<div class="ttc" id="aclass_pico_hal_html_a25993f76cf572e1a891b7ecc777721c2"><div class="ttname"><a href="class_pico_hal.html#a25993f76cf572e1a891b7ecc777721c2">PicoHal::digitalRead</a></div><div class="ttdeci">uint32_t digitalRead(uint32_t pin) override</div><div class="ttdoc">Digital read method. Must be implemented by the platform-specific hardware abstraction!</div><div class="ttdef"><b>Definition</b> PicoHal.h:93</div></div>
<div class="ttc" id="aclass_pico_hal_html_a27803b7a0b53dca9fd1c74eadb15755a"><div class="ttname"><a href="class_pico_hal.html#a27803b7a0b53dca9fd1c74eadb15755a">PicoHal::term</a></div><div class="ttdeci">void term() override</div><div class="ttdoc">Module termination method. This will be called by all radio modules when the destructor is called....</div><div class="ttdef"><b>Definition</b> PicoHal.h:70</div></div>
<div class="ttc" id="aclass_pico_hal_html_a2b6136b2c90e83c1ab94bd92ef32805c"><div class="ttname"><a href="class_pico_hal.html#a2b6136b2c90e83c1ab94bd92ef32805c">PicoHal::spiBeginTransaction</a></div><div class="ttdeci">void spiBeginTransaction()</div><div class="ttdoc">Method to start SPI transaction.</div><div class="ttdef"><b>Definition</b> PicoHal.h:173</div></div>
<div class="ttc" id="aclass_pico_hal_html_a323d56fc8637f2b005070c7585bfe82e"><div class="ttname"><a href="class_pico_hal.html#a323d56fc8637f2b005070c7585bfe82e">PicoHal::detachInterrupt</a></div><div class="ttdeci">void detachInterrupt(uint32_t interruptNum) override</div><div class="ttdoc">Method to detach function from an external interrupt. Must be implemented by the platform-specific ha...</div><div class="ttdef"><b>Definition</b> PicoHal.h:109</div></div>
<div class="ttc" id="aclass_pico_hal_html_a3eb9710f7b7702c9035833a4f8176038"><div class="ttname"><a href="class_pico_hal.html#a3eb9710f7b7702c9035833a4f8176038">PicoHal::micros</a></div><div class="ttdeci">unsigned long micros() override</div><div class="ttdoc">Get number of microseconds since start. Must be implemented by the platform-specific hardware abstrac...</div><div class="ttdef"><b>Definition</b> PicoHal.h:129</div></div>
<div class="ttc" id="aclass_pico_hal_html_a414de51bef859659b8cac66df32bdb5a"><div class="ttname"><a href="class_pico_hal.html#a414de51bef859659b8cac66df32bdb5a">PicoHal::spiBegin</a></div><div class="ttdeci">void spiBegin()</div><div class="ttdoc">SPI initialization method.</div><div class="ttdef"><b>Definition</b> PicoHal.h:164</div></div>
<div class="ttc" id="aclass_pico_hal_html_a4a69597cf1a071a0fa61d1d292008628"><div class="ttname"><a href="class_pico_hal.html#a4a69597cf1a071a0fa61d1d292008628">PicoHal::delayMicroseconds</a></div><div class="ttdeci">void delayMicroseconds(unsigned long us) override</div><div class="ttdoc">Blocking microsecond wait function. Must be implemented by the platform-specific hardware abstraction...</div><div class="ttdef"><b>Definition</b> PicoHal.h:121</div></div>
<div class="ttc" id="aclass_pico_hal_html_a4e82e02b4de6d1c192f52fb0ddd1c9c4"><div class="ttname"><a href="class_pico_hal.html#a4e82e02b4de6d1c192f52fb0ddd1c9c4">PicoHal::millis</a></div><div class="ttdeci">unsigned long millis() override</div><div class="ttdoc">Get number of milliseconds since start. Must be implemented by the platform-specific hardware abstrac...</div><div class="ttdef"><b>Definition</b> PicoHal.h:125</div></div>
<div class="ttc" id="aclass_pico_hal_html_a4f5e06e79f6f6b7952243fe3817200b4"><div class="ttname"><a href="class_pico_hal.html#a4f5e06e79f6f6b7952243fe3817200b4">PicoHal::digitalWrite</a></div><div class="ttdeci">void digitalWrite(uint32_t pin, uint32_t value) override</div><div class="ttdoc">Digital write method. Must be implemented by the platform-specific hardware abstraction!</div><div class="ttdef"><b>Definition</b> PicoHal.h:85</div></div>
<div class="ttc" id="aclass_pico_hal_html_a504806e3adb1a5b9f6784478bae16c10"><div class="ttname"><a href="class_pico_hal.html#a504806e3adb1a5b9f6784478bae16c10">PicoHal::pulseIn</a></div><div class="ttdeci">long pulseIn(uint32_t pin, uint32_t state, unsigned long timeout) override</div><div class="ttdoc">Measure the length of incoming digital pulse in microseconds. Must be implemented by the platform-spe...</div><div class="ttdef"><b>Definition</b> PicoHal.h:133</div></div>
<div class="ttc" id="aclass_pico_hal_html_a960f5c3890a0ee6fd339d93ca9769c62"><div class="ttname"><a href="class_pico_hal.html#a960f5c3890a0ee6fd339d93ca9769c62">PicoHal::attachInterrupt</a></div><div class="ttdeci">void attachInterrupt(uint32_t interruptNum, void(*interruptCb)(void), uint32_t mode) override</div><div class="ttdoc">Method to attach function to an external interrupt. Must be implemented by the platform-specific hard...</div><div class="ttdef"><b>Definition</b> PicoHal.h:101</div></div>
<div class="ttc" id="aclass_pico_hal_html_a9eea222b674b9f36c68dfb8db3bbf096"><div class="ttname"><a href="class_pico_hal.html#a9eea222b674b9f36c68dfb8db3bbf096">PicoHal::init</a></div><div class="ttdeci">void init() override</div><div class="ttdoc">Module initialization method. This will be called by all radio modules at the beginning of startup....</div><div class="ttdef"><b>Definition</b> PicoHal.h:65</div></div>
<div class="ttc" id="aclass_pico_hal_html_abfa0319db88b4c015edf67a9c9b671be"><div class="ttname"><a href="class_pico_hal.html#abfa0319db88b4c015edf67a9c9b671be">PicoHal::tone</a></div><div class="ttdeci">void tone(uint32_t pin, unsigned int frequency, unsigned long duration=0) override</div><div class="ttdoc">Method to produce a square-wave with 50% duty cycle (&quot;tone&quot;) of a given frequency at some pin.</div><div class="ttdef"><b>Definition</b> PicoHal.h:151</div></div>
<div class="ttc" id="aclass_pico_hal_html_ac539134f4517ef79de49832bb86392f2"><div class="ttname"><a href="class_pico_hal.html#ac539134f4517ef79de49832bb86392f2">PicoHal::pinMode</a></div><div class="ttdeci">void pinMode(uint32_t pin, uint32_t mode) override</div><div class="ttdoc">GPIO pin mode (input/output/...) configuration method. Must be implemented by the platform-specific h...</div><div class="ttdef"><b>Definition</b> PicoHal.h:76</div></div>
<div class="ttc" id="aclass_pico_hal_html_ac932d26b6a31a0cd7f577d4f8812896c"><div class="ttname"><a href="class_pico_hal.html#ac932d26b6a31a0cd7f577d4f8812896c">PicoHal::spiEnd</a></div><div class="ttdeci">void spiEnd()</div><div class="ttdoc">SPI termination method.</div><div class="ttdef"><b>Definition</b> PicoHal.h:185</div></div>
<div class="ttc" id="aclass_pico_hal_html_acc961bf30af621d0dfec2b3f7e25cf5c"><div class="ttname"><a href="class_pico_hal.html#acc961bf30af621d0dfec2b3f7e25cf5c">PicoHal::spiTransfer</a></div><div class="ttdeci">void spiTransfer(uint8_t *out, size_t len, uint8_t *in)</div><div class="ttdoc">Method to transfer buffer over SPI.</div><div class="ttdef"><b>Definition</b> PicoHal.h:175</div></div>
<div class="ttc" id="aclass_pico_hal_html_add7d8e380c51f7fa2312aea2982878c2"><div class="ttname"><a href="class_pico_hal.html#add7d8e380c51f7fa2312aea2982878c2">PicoHal::yield</a></div><div class="ttdeci">void yield() override</div><div class="ttdoc">Yield method, called from long loops in multi-threaded environment (to prevent blocking other threads...</div><div class="ttdef"><b>Definition</b> PicoHal.h:179</div></div>
<div class="ttc" id="aclass_pico_hal_html_ae6773c6f0aac24774614a3179a4da475"><div class="ttname"><a href="class_pico_hal.html#ae6773c6f0aac24774614a3179a4da475">PicoHal::spiEndTransaction</a></div><div class="ttdeci">void spiEndTransaction()</div><div class="ttdoc">Method to end SPI transaction.</div><div class="ttdef"><b>Definition</b> PicoHal.h:183</div></div>
<div class="ttc" id="aclass_pico_hal_html_af80164483ca2bda3a7dd0cc795549524"><div class="ttname"><a href="class_pico_hal.html#af80164483ca2bda3a7dd0cc795549524">PicoHal::noTone</a></div><div class="ttdeci">void noTone(uint32_t pin) override</div><div class="ttdoc">Method to stop producing a tone.</div><div class="ttdef"><b>Definition</b> PicoHal.h:160</div></div>
<div class="ttc" id="aclass_radio_lib_hal_html"><div class="ttname"><a href="class_radio_lib_hal.html">RadioLibHal</a></div><div class="ttdoc">Hardware abstraction library base interface.</div><div class="ttdef"><b>Definition</b> Hal.h:16</div></div>
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