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<section id="m5stack-atom-s3-examples">
<h1>M5STACK ATOM-S3 Examples<a class="headerlink" href="#m5stack-atom-s3-examples" title="Link to this heading"></a></h1>
<p>These examples run on the M5Stack ATOM-S3. See <a class="reference external" href="https://shop.m5stack.com/products/atoms3-dev-kit-w-0-85-inch-screen">https://shop.m5stack.com/products/atoms3-dev-kit-w-0-85-inch-screen</a>
for more information.</p>
<section id="atom-s3-feathers-py">
<h2>atom_s3/feathers.py<a class="headerlink" href="#atom-s3-feathers-py" title="Link to this heading"></a></h2>
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="linenos"> 1</span><span class="sd">&quot;&quot;&quot;</span>
<span class="linenos"> 2</span><span class="sd">feathers.py</span>
<span class="linenos"> 3</span>
<span class="linenos"> 4</span><span class="sd"> Smoothly scroll mirrored rainbow colored random curves across the display.</span>
<span class="linenos"> 5</span>
<span class="linenos"> 6</span><span class="sd">&quot;&quot;&quot;</span>
<span class="linenos"> 7</span>
<span class="linenos"> 8</span><span class="kn">import</span> <span class="nn">random</span>
<span class="linenos"> 9</span><span class="kn">import</span> <span class="nn">math</span>
<span class="linenos"> 10</span><span class="kn">import</span> <span class="nn">utime</span>
<span class="linenos"> 11</span><span class="kn">from</span> <span class="nn">machine</span> <span class="kn">import</span> <span class="n">Pin</span><span class="p">,</span> <span class="n">SPI</span>
<span class="linenos"> 12</span><span class="kn">import</span> <span class="nn">st7789py</span> <span class="k">as</span> <span class="nn">st7789</span>
<span class="linenos"> 13</span>
<span class="linenos"> 14</span>
<span class="linenos"> 15</span><span class="k">def</span> <span class="nf">between</span><span class="p">(</span><span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">,</span> <span class="n">along</span><span class="p">):</span>
<span class="linenos"> 16</span><span class="w"> </span><span class="sd">&quot;&quot;&quot;returns a point along the curve from left to right&quot;&quot;&quot;</span>
<span class="linenos"> 17</span> <span class="n">dist</span> <span class="o">=</span> <span class="p">(</span><span class="mi">1</span> <span class="o">-</span> <span class="n">math</span><span class="o">.</span><span class="n">cos</span><span class="p">(</span><span class="n">along</span> <span class="o">*</span> <span class="n">math</span><span class="o">.</span><span class="n">pi</span><span class="p">))</span> <span class="o">/</span> <span class="mi">2</span>
<span class="linenos"> 18</span> <span class="k">return</span> <span class="n">left</span> <span class="o">*</span> <span class="p">(</span><span class="mi">1</span> <span class="o">-</span> <span class="n">dist</span><span class="p">)</span> <span class="o">+</span> <span class="n">right</span> <span class="o">*</span> <span class="n">dist</span>
<span class="linenos"> 19</span>
<span class="linenos"> 20</span>
<span class="linenos"> 21</span><span class="k">def</span> <span class="nf">color_wheel</span><span class="p">(</span><span class="n">position</span><span class="p">):</span>
<span class="linenos"> 22</span><span class="w"> </span><span class="sd">&quot;&quot;&quot;returns a 565 color from the given position of the color wheel&quot;&quot;&quot;</span>
<span class="linenos"> 23</span> <span class="n">position</span> <span class="o">=</span> <span class="p">(</span><span class="mi">255</span> <span class="o">-</span> <span class="n">position</span><span class="p">)</span> <span class="o">%</span> <span class="mi">255</span>
<span class="linenos"> 24</span>
<span class="linenos"> 25</span> <span class="k">if</span> <span class="n">position</span> <span class="o">&lt;</span> <span class="mi">85</span><span class="p">:</span>
<span class="linenos"> 26</span> <span class="k">return</span> <span class="n">st7789</span><span class="o">.</span><span class="n">color565</span><span class="p">(</span><span class="mi">255</span> <span class="o">-</span> <span class="n">position</span> <span class="o">*</span> <span class="mi">3</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="n">position</span> <span class="o">*</span> <span class="mi">3</span><span class="p">)</span>
<span class="linenos"> 27</span>
<span class="linenos"> 28</span> <span class="k">if</span> <span class="n">position</span> <span class="o">&lt;</span> <span class="mi">170</span><span class="p">:</span>
<span class="linenos"> 29</span> <span class="n">position</span> <span class="o">-=</span> <span class="mi">85</span>
<span class="linenos"> 30</span> <span class="k">return</span> <span class="n">st7789</span><span class="o">.</span><span class="n">color565</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="n">position</span> <span class="o">*</span> <span class="mi">3</span><span class="p">,</span> <span class="mi">255</span> <span class="o">-</span> <span class="n">position</span> <span class="o">*</span> <span class="mi">3</span><span class="p">)</span>
<span class="linenos"> 31</span>
<span class="linenos"> 32</span> <span class="n">position</span> <span class="o">-=</span> <span class="mi">170</span>
<span class="linenos"> 33</span> <span class="k">return</span> <span class="n">st7789</span><span class="o">.</span><span class="n">color565</span><span class="p">(</span><span class="n">position</span> <span class="o">*</span> <span class="mi">3</span><span class="p">,</span> <span class="mi">255</span> <span class="o">-</span> <span class="n">position</span> <span class="o">*</span> <span class="mi">3</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span>
<span class="linenos"> 34</span>
<span class="linenos"> 35</span>
<span class="linenos"> 36</span><span class="k">def</span> <span class="nf">main</span><span class="p">():</span>
<span class="linenos"> 37</span><span class="w"> </span><span class="sd">&#39;&#39;&#39;</span>
<span class="linenos"> 38</span><span class="sd"> The big show!</span>
<span class="linenos"> 39</span><span class="sd"> &#39;&#39;&#39;</span>
<span class="linenos"> 40</span> <span class="c1">#enable display and clear screen</span>
<span class="linenos"> 41</span> <span class="n">spi</span> <span class="o">=</span> <span class="n">SPI</span><span class="p">(</span><span class="mi">2</span><span class="p">,</span> <span class="n">baudrate</span><span class="o">=</span><span class="mi">40000000</span><span class="p">,</span> <span class="n">sck</span><span class="o">=</span><span class="n">Pin</span><span class="p">(</span><span class="mi">17</span><span class="p">),</span> <span class="n">mosi</span><span class="o">=</span><span class="n">Pin</span><span class="p">(</span><span class="mi">21</span><span class="p">),</span> <span class="n">miso</span><span class="o">=</span><span class="kc">None</span><span class="p">)</span>
<span class="linenos"> 42</span> <span class="n">tft</span> <span class="o">=</span> <span class="n">st7789</span><span class="o">.</span><span class="n">ST7789</span><span class="p">(</span>
<span class="linenos"> 43</span> <span class="n">spi</span><span class="p">,</span>
<span class="linenos"> 44</span> <span class="mi">128</span><span class="p">,</span>
<span class="linenos"> 45</span> <span class="mi">128</span><span class="p">,</span>
<span class="linenos"> 46</span> <span class="n">reset</span><span class="o">=</span><span class="n">Pin</span><span class="p">(</span><span class="mi">34</span><span class="p">,</span> <span class="n">Pin</span><span class="o">.</span><span class="n">OUT</span><span class="p">),</span>
<span class="linenos"> 47</span> <span class="n">cs</span><span class="o">=</span><span class="n">Pin</span><span class="p">(</span><span class="mi">15</span><span class="p">,</span> <span class="n">Pin</span><span class="o">.</span><span class="n">OUT</span><span class="p">),</span>
<span class="linenos"> 48</span> <span class="n">dc</span><span class="o">=</span><span class="n">Pin</span><span class="p">(</span><span class="mi">33</span><span class="p">,</span> <span class="n">Pin</span><span class="o">.</span><span class="n">OUT</span><span class="p">),</span>
<span class="linenos"> 49</span> <span class="n">backlight</span><span class="o">=</span><span class="n">Pin</span><span class="p">(</span><span class="mi">16</span><span class="p">,</span> <span class="n">Pin</span><span class="o">.</span><span class="n">OUT</span><span class="p">),</span>
<span class="linenos"> 50</span> <span class="n">rotation</span><span class="o">=</span><span class="mi">1</span><span class="p">,</span>
<span class="linenos"> 51</span> <span class="n">color_order</span><span class="o">=</span><span class="n">st7789</span><span class="o">.</span><span class="n">BGR</span><span class="p">)</span>
<span class="linenos"> 52</span>
<span class="linenos"> 53</span>
<span class="linenos"> 54</span> <span class="n">height</span> <span class="o">=</span> <span class="n">tft</span><span class="o">.</span><span class="n">height</span> <span class="c1"># height of display in pixels</span>
<span class="linenos"> 55</span> <span class="n">width</span> <span class="o">=</span> <span class="n">tft</span><span class="o">.</span><span class="n">width</span> <span class="c1"># width if display in pixels</span>
<span class="linenos"> 56</span>
<span class="linenos"> 57</span> <span class="n">tfa</span> <span class="o">=</span> <span class="mi">1</span> <span class="c1"># top free area when scrolling</span>
<span class="linenos"> 58</span> <span class="n">bfa</span> <span class="o">=</span> <span class="mi">3</span> <span class="c1"># bottom free area when scrolling</span>
<span class="linenos"> 59</span>
<span class="linenos"> 60</span> <span class="n">scroll</span> <span class="o">=</span> <span class="mi">0</span> <span class="c1"># scroll position</span>
<span class="linenos"> 61</span> <span class="n">wheel</span> <span class="o">=</span> <span class="mi">0</span> <span class="c1"># color wheel position</span>
<span class="linenos"> 62</span>
<span class="linenos"> 63</span> <span class="n">tft</span><span class="o">.</span><span class="n">vscrdef</span><span class="p">(</span><span class="n">tfa</span><span class="p">,</span> <span class="n">width</span><span class="p">,</span> <span class="n">bfa</span><span class="p">)</span> <span class="c1"># set scroll area</span>
<span class="linenos"> 64</span> <span class="n">tft</span><span class="o">.</span><span class="n">vscsad</span><span class="p">(</span><span class="n">scroll</span> <span class="o">+</span> <span class="n">tfa</span><span class="p">)</span> <span class="c1"># set scroll position</span>
<span class="linenos"> 65</span> <span class="n">tft</span><span class="o">.</span><span class="n">fill</span><span class="p">(</span><span class="n">st7789</span><span class="o">.</span><span class="n">BLACK</span><span class="p">)</span> <span class="c1"># clear screen</span>
<span class="linenos"> 66</span>
<span class="linenos"> 67</span> <span class="n">half</span> <span class="o">=</span> <span class="p">(</span><span class="n">height</span> <span class="o">&gt;&gt;</span> <span class="mi">1</span><span class="p">)</span> <span class="o">-</span> <span class="mi">1</span> <span class="c1"># half the height of the dislay</span>
<span class="linenos"> 68</span> <span class="n">interval</span> <span class="o">=</span> <span class="mi">0</span> <span class="c1"># steps between new points</span>
<span class="linenos"> 69</span> <span class="n">increment</span> <span class="o">=</span> <span class="mi">0</span> <span class="c1"># increment per step</span>
<span class="linenos"> 70</span> <span class="n">counter</span> <span class="o">=</span> <span class="mi">1</span> <span class="c1"># step counter, overflow to start</span>
<span class="linenos"> 71</span> <span class="n">current_y</span> <span class="o">=</span> <span class="mi">0</span> <span class="c1"># current_y value (right point)</span>
<span class="linenos"> 72</span> <span class="n">last_y</span> <span class="o">=</span> <span class="mi">0</span> <span class="c1"># last_y value (left point)</span>
<span class="linenos"> 73</span>
<span class="linenos"> 74</span> <span class="c1"># segment offsets</span>
<span class="linenos"> 75</span> <span class="n">x_offsets</span> <span class="o">=</span> <span class="p">[</span><span class="n">x</span> <span class="o">*</span> <span class="p">(</span><span class="n">width</span> <span class="o">//</span> <span class="mi">8</span><span class="p">)</span> <span class="o">-</span><span class="mi">1</span> <span class="k">for</span> <span class="n">x</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="mi">2</span><span class="p">,</span><span class="mi">9</span><span class="p">)]</span>
<span class="linenos"> 76</span>
<span class="linenos"> 77</span> <span class="k">while</span> <span class="kc">True</span><span class="p">:</span>
<span class="linenos"> 78</span> <span class="c1"># when the counter exceeds the interval, save current_y to last_y,</span>
<span class="linenos"> 79</span> <span class="c1"># choose a new random value for current_y between 0 and 1/2 the</span>
<span class="linenos"> 80</span> <span class="c1"># height of the display, choose a new random interval then reset</span>
<span class="linenos"> 81</span> <span class="c1"># the counter to 0</span>
<span class="linenos"> 82</span>
<span class="linenos"> 83</span> <span class="k">if</span> <span class="n">counter</span> <span class="o">&gt;</span> <span class="n">interval</span><span class="p">:</span>
<span class="linenos"> 84</span> <span class="n">last_y</span> <span class="o">=</span> <span class="n">current_y</span>
<span class="linenos"> 85</span> <span class="n">current_y</span> <span class="o">=</span> <span class="n">random</span><span class="o">.</span><span class="n">randint</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="n">half</span><span class="p">)</span>
<span class="linenos"> 86</span> <span class="n">counter</span> <span class="o">=</span> <span class="mi">0</span>
<span class="linenos"> 87</span> <span class="n">interval</span> <span class="o">=</span> <span class="n">random</span><span class="o">.</span><span class="n">randint</span><span class="p">(</span><span class="mi">10</span><span class="p">,</span> <span class="mi">100</span><span class="p">)</span>
<span class="linenos"> 88</span> <span class="n">increment</span> <span class="o">=</span> <span class="mi">1</span><span class="o">/</span><span class="n">interval</span> <span class="c1"># increment per step</span>
<span class="linenos"> 89</span>
<span class="linenos"> 90</span> <span class="c1"># clear the first column of the display and scroll it</span>
<span class="linenos"> 91</span> <span class="n">tft</span><span class="o">.</span><span class="n">vline</span><span class="p">(</span><span class="n">scroll</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="n">height</span><span class="p">,</span> <span class="n">st7789</span><span class="o">.</span><span class="n">BLACK</span><span class="p">)</span>
<span class="linenos"> 92</span> <span class="n">tft</span><span class="o">.</span><span class="n">vscsad</span><span class="p">(</span><span class="n">scroll</span> <span class="o">+</span> <span class="n">tfa</span><span class="p">)</span>
<span class="linenos"> 93</span>
<span class="linenos"> 94</span> <span class="c1"># get the next point between last_y and current_y</span>
<span class="linenos"> 95</span> <span class="n">tween</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">between</span><span class="p">(</span><span class="n">last_y</span><span class="p">,</span> <span class="n">current_y</span><span class="p">,</span> <span class="n">counter</span> <span class="o">*</span> <span class="n">increment</span><span class="p">))</span>
<span class="linenos"> 96</span>
<span class="linenos"> 97</span> <span class="c1"># draw mirrored pixels across the display at the offsets using the color_wheel effect</span>
<span class="linenos"> 98</span> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">x_offset</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">x_offsets</span><span class="p">):</span>
<span class="linenos"> 99</span> <span class="n">tft</span><span class="o">.</span><span class="n">pixel</span><span class="p">((</span><span class="n">scroll</span> <span class="o">+</span> <span class="n">x_offset</span><span class="p">)</span> <span class="o">%</span> <span class="n">width</span><span class="p">,</span> <span class="n">half</span> <span class="o">+</span> <span class="n">tween</span><span class="p">,</span> <span class="n">color_wheel</span><span class="p">(</span><span class="n">wheel</span><span class="o">+</span><span class="p">(</span><span class="n">i</span><span class="o">&lt;&lt;</span><span class="mi">2</span><span class="p">)))</span>
<span class="linenos">100</span> <span class="n">tft</span><span class="o">.</span><span class="n">pixel</span><span class="p">((</span><span class="n">scroll</span> <span class="o">+</span> <span class="n">x_offset</span><span class="p">)</span> <span class="o">%</span> <span class="n">width</span><span class="p">,</span> <span class="n">half</span> <span class="o">-</span> <span class="n">tween</span><span class="p">,</span> <span class="n">color_wheel</span><span class="p">(</span><span class="n">wheel</span><span class="o">+</span><span class="p">(</span><span class="n">i</span><span class="o">&lt;&lt;</span><span class="mi">2</span><span class="p">)))</span>
<span class="linenos">101</span>
<span class="linenos">102</span> <span class="c1"># increment scroll, counter, and wheel</span>
<span class="linenos">103</span> <span class="n">scroll</span> <span class="o">=</span> <span class="p">(</span><span class="n">scroll</span> <span class="o">+</span> <span class="mi">1</span><span class="p">)</span> <span class="o">%</span> <span class="n">width</span>
<span class="linenos">104</span> <span class="n">wheel</span> <span class="o">=</span> <span class="p">(</span><span class="n">wheel</span> <span class="o">+</span> <span class="mi">1</span><span class="p">)</span> <span class="o">%</span> <span class="mi">256</span>
<span class="linenos">105</span> <span class="n">counter</span> <span class="o">+=</span> <span class="mi">1</span>
<span class="linenos">106</span>
<span class="linenos">107</span>
<span class="linenos">108</span><span class="n">main</span><span class="p">()</span>
</pre></div>
</div>
</section>
<section id="atom-s3-rotations-py">
<h2>atom_s3/rotations.py<a class="headerlink" href="#atom-s3-rotations-py" title="Link to this heading"></a></h2>
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="linenos"> 1</span><span class="sd">&quot;&quot;&quot;</span>
<span class="linenos"> 2</span><span class="sd">feathers.py</span>
<span class="linenos"> 3</span>
<span class="linenos"> 4</span><span class="sd"> Smoothly scroll mirrored rainbow colored random curves across the display.</span>
<span class="linenos"> 5</span>
<span class="linenos"> 6</span><span class="sd">&quot;&quot;&quot;</span>
<span class="linenos"> 7</span>
<span class="linenos"> 8</span><span class="kn">import</span> <span class="nn">random</span>
<span class="linenos"> 9</span><span class="kn">import</span> <span class="nn">math</span>
<span class="linenos">10</span><span class="kn">import</span> <span class="nn">time</span>
<span class="linenos">11</span><span class="kn">from</span> <span class="nn">machine</span> <span class="kn">import</span> <span class="n">Pin</span><span class="p">,</span> <span class="n">SPI</span>
<span class="linenos">12</span><span class="kn">import</span> <span class="nn">st7789py</span> <span class="k">as</span> <span class="nn">st7789</span>
<span class="linenos">13</span><span class="kn">import</span> <span class="nn">vga1_8x8</span> <span class="k">as</span> <span class="nn">font</span>
<span class="linenos">14</span>
<span class="linenos">15</span>
<span class="linenos">16</span><span class="k">def</span> <span class="nf">center_on</span><span class="p">(</span><span class="n">display</span><span class="p">,</span> <span class="n">font</span><span class="p">,</span> <span class="n">text</span><span class="p">,</span> <span class="n">y</span><span class="p">,</span> <span class="n">fg</span><span class="p">,</span> <span class="n">bg</span><span class="p">):</span>
<span class="linenos">17</span><span class="w"> </span><span class="sd">&#39;&#39;&#39;</span>
<span class="linenos">18</span><span class="sd"> Center the text on the display</span>
<span class="linenos">19</span><span class="sd"> &#39;&#39;&#39;</span>
<span class="linenos">20</span> <span class="n">x</span> <span class="o">=</span> <span class="p">(</span><span class="n">display</span><span class="o">.</span><span class="n">width</span> <span class="o">-</span> <span class="nb">len</span><span class="p">(</span><span class="n">text</span><span class="p">)</span> <span class="o">*</span> <span class="n">font</span><span class="o">.</span><span class="n">WIDTH</span><span class="p">)</span> <span class="o">//</span> <span class="mi">2</span>
<span class="linenos">21</span> <span class="n">display</span><span class="o">.</span><span class="n">text</span><span class="p">(</span><span class="n">font</span><span class="p">,</span> <span class="n">text</span><span class="p">,</span> <span class="n">x</span><span class="p">,</span> <span class="n">y</span><span class="p">,</span> <span class="n">fg</span><span class="p">,</span> <span class="n">bg</span><span class="p">)</span>
<span class="linenos">22</span>
<span class="linenos">23</span><span class="k">def</span> <span class="nf">main</span><span class="p">():</span>
<span class="linenos">24</span><span class="w"> </span><span class="sd">&#39;&#39;&#39;</span>
<span class="linenos">25</span><span class="sd"> The big show!</span>
<span class="linenos">26</span><span class="sd"> &#39;&#39;&#39;</span>
<span class="linenos">27</span> <span class="c1">#enable display and clear screen</span>
<span class="linenos">28</span>
<span class="linenos">29</span> <span class="n">spi</span> <span class="o">=</span> <span class="n">SPI</span><span class="p">(</span><span class="mi">2</span><span class="p">,</span> <span class="n">baudrate</span><span class="o">=</span><span class="mi">40000000</span><span class="p">,</span> <span class="n">sck</span><span class="o">=</span><span class="n">Pin</span><span class="p">(</span><span class="mi">17</span><span class="p">),</span> <span class="n">mosi</span><span class="o">=</span><span class="n">Pin</span><span class="p">(</span><span class="mi">21</span><span class="p">),</span> <span class="n">miso</span><span class="o">=</span><span class="kc">None</span><span class="p">)</span>
<span class="linenos">30</span> <span class="n">tft</span> <span class="o">=</span> <span class="n">st7789</span><span class="o">.</span><span class="n">ST7789</span><span class="p">(</span>
<span class="linenos">31</span> <span class="n">spi</span><span class="p">,</span>
<span class="linenos">32</span> <span class="mi">128</span><span class="p">,</span>
<span class="linenos">33</span> <span class="mi">128</span><span class="p">,</span>
<span class="linenos">34</span> <span class="n">reset</span><span class="o">=</span><span class="n">Pin</span><span class="p">(</span><span class="mi">34</span><span class="p">,</span> <span class="n">Pin</span><span class="o">.</span><span class="n">OUT</span><span class="p">),</span>
<span class="linenos">35</span> <span class="n">cs</span><span class="o">=</span><span class="n">Pin</span><span class="p">(</span><span class="mi">15</span><span class="p">,</span> <span class="n">Pin</span><span class="o">.</span><span class="n">OUT</span><span class="p">),</span>
<span class="linenos">36</span> <span class="n">dc</span><span class="o">=</span><span class="n">Pin</span><span class="p">(</span><span class="mi">33</span><span class="p">,</span> <span class="n">Pin</span><span class="o">.</span><span class="n">OUT</span><span class="p">),</span>
<span class="linenos">37</span> <span class="n">backlight</span><span class="o">=</span><span class="n">Pin</span><span class="p">(</span><span class="mi">16</span><span class="p">,</span> <span class="n">Pin</span><span class="o">.</span><span class="n">OUT</span><span class="p">),</span>
<span class="linenos">38</span> <span class="n">rotation</span><span class="o">=</span><span class="mi">1</span><span class="p">,</span>
<span class="linenos">39</span> <span class="n">color_order</span><span class="o">=</span><span class="n">st7789</span><span class="o">.</span><span class="n">BGR</span><span class="p">)</span>
<span class="linenos">40</span>
<span class="linenos">41</span> <span class="n">height</span> <span class="o">=</span> <span class="n">tft</span><span class="o">.</span><span class="n">height</span> <span class="c1"># height of display in pixels</span>
<span class="linenos">42</span> <span class="n">width</span> <span class="o">=</span> <span class="n">tft</span><span class="o">.</span><span class="n">width</span> <span class="c1"># width if display in pixels</span>
<span class="linenos">43</span>
<span class="linenos">44</span> <span class="k">while</span> <span class="kc">True</span><span class="p">:</span>
<span class="linenos">45</span> <span class="k">for</span> <span class="n">rotation</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="mi">4</span><span class="p">):</span>
<span class="linenos">46</span> <span class="n">tft</span><span class="o">.</span><span class="n">rotation</span><span class="p">(</span><span class="n">rotation</span><span class="p">)</span>
<span class="linenos">47</span> <span class="n">tft</span><span class="o">.</span><span class="n">fill</span><span class="p">(</span><span class="n">st7789</span><span class="o">.</span><span class="n">BLACK</span><span class="p">)</span>
<span class="linenos">48</span> <span class="n">tft</span><span class="o">.</span><span class="n">rect</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="n">width</span><span class="p">,</span> <span class="n">height</span><span class="p">,</span> <span class="n">st7789</span><span class="o">.</span><span class="n">RED</span><span class="p">)</span>
<span class="linenos">49</span> <span class="n">center_on</span><span class="p">(</span><span class="n">tft</span><span class="p">,</span> <span class="n">font</span><span class="p">,</span> <span class="s2">&quot;Rotation&quot;</span><span class="p">,</span> <span class="n">height</span> <span class="o">//</span> <span class="mi">2</span> <span class="o">-</span> <span class="n">font</span><span class="o">.</span><span class="n">HEIGHT</span><span class="p">,</span> <span class="n">st7789</span><span class="o">.</span><span class="n">WHITE</span><span class="p">,</span> <span class="n">st7789</span><span class="o">.</span><span class="n">BLACK</span><span class="p">)</span>
<span class="linenos">50</span> <span class="n">center_on</span><span class="p">(</span><span class="n">tft</span><span class="p">,</span> <span class="n">font</span><span class="p">,</span> <span class="nb">str</span><span class="p">(</span><span class="n">rotation</span><span class="p">),</span> <span class="n">height</span> <span class="o">//</span> <span class="mi">2</span> <span class="o">+</span> <span class="n">font</span><span class="o">.</span><span class="n">HEIGHT</span><span class="p">,</span> <span class="n">st7789</span><span class="o">.</span><span class="n">WHITE</span><span class="p">,</span> <span class="n">st7789</span><span class="o">.</span><span class="n">BLACK</span><span class="p">)</span>
<span class="linenos">51</span> <span class="n">time</span><span class="o">.</span><span class="n">sleep</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
<span class="linenos">52</span>
<span class="linenos">53</span><span class="n">main</span><span class="p">()</span>
</pre></div>
</div>
</section>
<section id="atom-s3-scroll-py">
<h2>atom_s3/scroll.py<a class="headerlink" href="#atom-s3-scroll-py" title="Link to this heading"></a></h2>
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="linenos"> 1</span><span class="sd">&quot;&quot;&quot;</span>
<span class="linenos"> 2</span><span class="sd">scroll.py</span>
<span class="linenos"> 3</span>
<span class="linenos"> 4</span><span class="sd"> Smoothly scrolls all font characters up the screen on the LILYGO® TTGO</span>
<span class="linenos"> 5</span><span class="sd"> T-Display. Only works with fonts with heights that are even multiples of</span>
<span class="linenos"> 6</span><span class="sd"> the screen height, (i.e. 8 or 16 pixels high)</span>
<span class="linenos"> 7</span>
<span class="linenos"> 8</span><span class="sd">&quot;&quot;&quot;</span>
<span class="linenos"> 9</span><span class="kn">import</span> <span class="nn">time</span>
<span class="linenos">10</span><span class="kn">import</span> <span class="nn">random</span>
<span class="linenos">11</span><span class="kn">from</span> <span class="nn">machine</span> <span class="kn">import</span> <span class="n">Pin</span><span class="p">,</span> <span class="n">SPI</span>
<span class="linenos">12</span><span class="kn">import</span> <span class="nn">st7789py</span> <span class="k">as</span> <span class="nn">st7789</span>
<span class="linenos">13</span>
<span class="linenos">14</span><span class="c1"># choose a font</span>
<span class="linenos">15</span>
<span class="linenos">16</span><span class="c1"># from romfonts import vga1_8x8 as font</span>
<span class="linenos">17</span><span class="c1"># from romfonts import vga2_8x8 as font</span>
<span class="linenos">18</span><span class="c1"># from romfonts import vga1_8x16 as font</span>
<span class="linenos">19</span><span class="c1"># from romfonts import vga2_8x16 as font</span>
<span class="linenos">20</span><span class="c1"># from romfonts import vga1_16x16 as font</span>
<span class="linenos">21</span><span class="c1"># from romfonts import vga1_bold_16x16 as font</span>
<span class="linenos">22</span><span class="c1"># from romfonts import vga2_16x16 as font</span>
<span class="linenos">23</span><span class="kn">from</span> <span class="nn">romfonts</span> <span class="kn">import</span> <span class="n">vga2_bold_16x16</span> <span class="k">as</span> <span class="n">font</span>
<span class="linenos">24</span>
<span class="linenos">25</span>
<span class="linenos">26</span><span class="k">def</span> <span class="nf">main</span><span class="p">():</span>
<span class="linenos">27</span> <span class="n">spi</span> <span class="o">=</span> <span class="n">SPI</span><span class="p">(</span><span class="mi">2</span><span class="p">,</span> <span class="n">baudrate</span><span class="o">=</span><span class="mi">40000000</span><span class="p">,</span> <span class="n">sck</span><span class="o">=</span><span class="n">Pin</span><span class="p">(</span><span class="mi">17</span><span class="p">),</span> <span class="n">mosi</span><span class="o">=</span><span class="n">Pin</span><span class="p">(</span><span class="mi">21</span><span class="p">),</span> <span class="n">miso</span><span class="o">=</span><span class="kc">None</span><span class="p">)</span>
<span class="linenos">28</span> <span class="n">tft</span> <span class="o">=</span> <span class="n">st7789</span><span class="o">.</span><span class="n">ST7789</span><span class="p">(</span>
<span class="linenos">29</span> <span class="n">spi</span><span class="p">,</span>
<span class="linenos">30</span> <span class="mi">128</span><span class="p">,</span>
<span class="linenos">31</span> <span class="mi">128</span><span class="p">,</span>
<span class="linenos">32</span> <span class="n">reset</span><span class="o">=</span><span class="n">Pin</span><span class="p">(</span><span class="mi">34</span><span class="p">,</span> <span class="n">Pin</span><span class="o">.</span><span class="n">OUT</span><span class="p">),</span>
<span class="linenos">33</span> <span class="n">cs</span><span class="o">=</span><span class="n">Pin</span><span class="p">(</span><span class="mi">15</span><span class="p">,</span> <span class="n">Pin</span><span class="o">.</span><span class="n">OUT</span><span class="p">),</span>
<span class="linenos">34</span> <span class="n">dc</span><span class="o">=</span><span class="n">Pin</span><span class="p">(</span><span class="mi">33</span><span class="p">,</span> <span class="n">Pin</span><span class="o">.</span><span class="n">OUT</span><span class="p">),</span>
<span class="linenos">35</span> <span class="n">backlight</span><span class="o">=</span><span class="n">Pin</span><span class="p">(</span><span class="mi">16</span><span class="p">,</span> <span class="n">Pin</span><span class="o">.</span><span class="n">OUT</span><span class="p">),</span>
<span class="linenos">36</span> <span class="n">rotation</span><span class="o">=</span><span class="mi">0</span><span class="p">,</span>
<span class="linenos">37</span> <span class="n">color_order</span><span class="o">=</span><span class="n">st7789</span><span class="o">.</span><span class="n">BGR</span><span class="p">)</span>
<span class="linenos">38</span>
<span class="linenos">39</span> <span class="n">last_line</span> <span class="o">=</span> <span class="n">tft</span><span class="o">.</span><span class="n">height</span> <span class="o">-</span> <span class="n">font</span><span class="o">.</span><span class="n">HEIGHT</span>
<span class="linenos">40</span> <span class="n">tfa</span> <span class="o">=</span> <span class="mi">1</span> <span class="c1"># top free area when scrolling</span>
<span class="linenos">41</span> <span class="n">bfa</span> <span class="o">=</span> <span class="mi">3</span> <span class="c1"># bottom free area when scrolling</span>
<span class="linenos">42</span>
<span class="linenos">43</span> <span class="n">tft</span><span class="o">.</span><span class="n">vscrdef</span><span class="p">(</span><span class="n">tfa</span><span class="p">,</span> <span class="n">tft</span><span class="o">.</span><span class="n">height</span><span class="p">,</span> <span class="n">bfa</span><span class="p">)</span>
<span class="linenos">44</span>
<span class="linenos">45</span> <span class="n">tft</span><span class="o">.</span><span class="n">fill</span><span class="p">(</span><span class="n">st7789</span><span class="o">.</span><span class="n">BLUE</span><span class="p">)</span>
<span class="linenos">46</span> <span class="n">scroll</span> <span class="o">=</span> <span class="mi">0</span>
<span class="linenos">47</span> <span class="n">character</span> <span class="o">=</span> <span class="mi">0</span>
<span class="linenos">48</span> <span class="k">while</span> <span class="kc">True</span><span class="p">:</span>
<span class="linenos">49</span> <span class="n">tft</span><span class="o">.</span><span class="n">fill_rect</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="n">scroll</span><span class="p">,</span> <span class="n">tft</span><span class="o">.</span><span class="n">width</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="n">st7789</span><span class="o">.</span><span class="n">BLUE</span><span class="p">)</span>
<span class="linenos">50</span>
<span class="linenos">51</span> <span class="k">if</span> <span class="n">scroll</span> <span class="o">%</span> <span class="n">font</span><span class="o">.</span><span class="n">HEIGHT</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
<span class="linenos">52</span> <span class="n">tft</span><span class="o">.</span><span class="n">text</span><span class="p">(</span>
<span class="linenos">53</span> <span class="n">font</span><span class="p">,</span>
<span class="linenos">54</span> <span class="sa">f</span><span class="s1">&#39; x</span><span class="si">{</span><span class="n">character</span><span class="si">:</span><span class="s1">02x</span><span class="si">}</span><span class="s1">= </span><span class="si">{</span><span class="nb">chr</span><span class="p">(</span><span class="n">character</span><span class="p">)</span><span class="si">}</span><span class="s1"> &#39;</span><span class="p">,</span>
<span class="linenos">55</span> <span class="mi">0</span><span class="p">,</span>
<span class="linenos">56</span> <span class="p">(</span><span class="n">scroll</span> <span class="o">+</span> <span class="n">last_line</span><span class="p">)</span> <span class="o">%</span> <span class="n">tft</span><span class="o">.</span><span class="n">height</span><span class="p">,</span>
<span class="linenos">57</span> <span class="n">st7789</span><span class="o">.</span><span class="n">WHITE</span><span class="p">,</span>
<span class="linenos">58</span> <span class="n">st7789</span><span class="o">.</span><span class="n">BLUE</span><span class="p">)</span>
<span class="linenos">59</span>
<span class="linenos">60</span> <span class="n">character</span> <span class="o">=</span> <span class="p">(</span><span class="n">character</span> <span class="o">+</span> <span class="mi">1</span><span class="p">)</span> <span class="o">%</span> <span class="p">(</span><span class="n">font</span><span class="o">.</span><span class="n">LAST</span><span class="o">+</span><span class="mi">1</span><span class="p">)</span>
<span class="linenos">61</span>
<span class="linenos">62</span> <span class="n">tft</span><span class="o">.</span><span class="n">vscsad</span><span class="p">(</span><span class="n">scroll</span> <span class="o">+</span> <span class="n">tfa</span><span class="p">)</span>
<span class="linenos">63</span> <span class="n">scroll</span> <span class="o">+=</span> <span class="mi">1</span>
<span class="linenos">64</span> <span class="n">time</span><span class="o">.</span><span class="n">sleep_ms</span><span class="p">(</span><span class="mi">10</span><span class="p">)</span>
<span class="linenos">65</span>
<span class="linenos">66</span> <span class="k">if</span> <span class="n">scroll</span> <span class="o">==</span> <span class="n">tft</span><span class="o">.</span><span class="n">height</span><span class="p">:</span>
<span class="linenos">67</span> <span class="n">scroll</span> <span class="o">=</span> <span class="mi">0</span>
<span class="linenos">68</span>
<span class="linenos">69</span>
<span class="linenos">70</span><span class="n">main</span><span class="p">()</span>
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