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<div id="projectname">SSD1306 OLED display driver
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 <span id="projectnumber">1.8.2</span>
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<div id="projectbrief">This library is developed to control SSD1306/SSD1331/SSD1351/IL9163/PCD8554 RGB i2c/spi LED displays</div>
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<li class="navelem"><a class="el" href="dir_79dd6902ba1de7f614a2c98c3be1d0c9.html">intf</a></li><li class="navelem"><a class="el" href="dir_3e8b6843e03d464b23d8454463bc5acb.html">vga</a></li><li class="navelem"><a class="el" href="dir_ed3beb012346184f5d0af670774de6e9.html">atmega328p</a></li> </ul>
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<a href="vga__isr_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> MIT License</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"></span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> Copyright (c) 2018, Alexey Dynda</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"></span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> Permission is hereby granted, free of charge, to any person obtaining a copy</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> of this software and associated documentation files (the "Software"), to deal</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> in the Software without restriction, including without limitation the rights</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> to use, copy, modify, merge, publish, distribute, sublicense, and/or sell</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> copies of the Software, and to permit persons to whom the Software is</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> furnished to do so, subject to the following conditions:</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"></span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> The above copyright notice and this permission notice shall be included in all</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> copies or substantial portions of the Software.</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"></span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> SOFTWARE.</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">*/</span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#ifndef _SSD1306_VGA_ATMEGA328P_ISR_H_</span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#define _SSD1306_VGA_ATMEGA328P_ISR_H_</span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> </div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor">#include "<a class="code" href="vga_8h.html">intf/vga/vga.h</a>"</span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="preprocessor">#include "<a class="code" href="io_8h.html">ssd1306_hal/io.h</a>"</span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="preprocessor">#ifdef __cplusplus</span></div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="keyword">extern</span> <span class="stringliteral">"C"</span> {</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment">// Including this header defines ISR handlers in your application automatically</span></div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="preprocessor">#if defined(CONFIG_VGA_AVAILABLE) && defined(CONFIG_VGA_ENABLE) && defined(__AVR_ATmega328P__)</span></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> </div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="preprocessor">#ifndef DEJITTER_OFFSET</span></div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="preprocessor">#define DEJITTER_OFFSET -4</span></div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="preprocessor">#if defined(CONFIG_VGA_128X64_ENABLE)</span></div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span> </div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="keyword">static</span> <span class="keyword">const</span> uint16_t __VGA_VERTICAL_PIXELS = 64;</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="keyword">static</span> <span class="keyword">const</span> uint16_t __VGA_LINE_BYTES = 16;</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="keyword">static</span> <span class="keyword">const</span> uint16_t __VGA_PIXEL_HEIGHT = 7;</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="keyword">volatile</span> uint8_t __vga_buffer[16*64] = {0};</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">volatile</span> uint8_t *__VGA_BUFFER_PTR = &__vga_buffer[0];</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> </div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="keywordtype">void</span> ssd1306_vga_controller_128x64_init_no_output(<span class="keywordtype">void</span>);</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="keywordtype">void</span> ssd1306_vga_controller_128x64_init_enable_output(<span class="keywordtype">void</span>);</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="keywordtype">void</span> ssd1306_vga_controller_128x64_init_enable_output_no_jitter_fix(<span class="keywordtype">void</span>);</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="keywordtype">void</span> ssd1306_debug_print_vga_buffer_128x64(<span class="keywordtype">void</span> (*func)(uint8_t));</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="preprocessor">#elif defined(CONFIG_VGA_96X40_ENABLE)</span></div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="keyword">static</span> <span class="keyword">const</span> uint16_t __VGA_VERTICAL_PIXELS = 40;</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="keyword">static</span> <span class="keyword">const</span> uint16_t __VGA_LINE_BYTES = 36;</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="keyword">static</span> <span class="keyword">const</span> uint16_t __VGA_PIXEL_HEIGHT = 10;</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="keyword">volatile</span> uint8_t __vga_buffer[36*40] = {0};</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">volatile</span> uint8_t * __VGA_BUFFER_PTR = &__vga_buffer[0];</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span> </div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="keywordtype">void</span> ssd1306_vga_controller_96x40_init_no_output(<span class="keywordtype">void</span>);</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="keywordtype">void</span> ssd1306_vga_controller_96x40_init_enable_output(<span class="keywordtype">void</span>);</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="keywordtype">void</span> ssd1306_vga_controller_96x40_init_enable_output_no_jitter_fix(<span class="keywordtype">void</span>);</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="keywordtype">void</span> ssd1306_debug_print_vga_buffer_96x40(<span class="keywordtype">void</span> (*func)(uint8_t));</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span> </div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="preprocessor">#else</span></div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="preprocessor"> #error "Please, define one of VGA options"</span></div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="preprocessor">#if !defined(VGA_CONTROLLER_DEBUG)</span></div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span> </div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="comment">// Total number of lines used in specific scan mode</span></div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="keyword">static</span> <span class="keyword">const</span> uint16_t VGA_TOTAL_MODE_LINES = __VGA_VERTICAL_PIXELS*__VGA_PIXEL_HEIGHT;</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment">// Lines to skip before starting to draw first line of the screen content</span></div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment">// This includes V-sync signal + front porch</span></div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="keyword">static</span> <span class="keyword">const</span> uint8_t V_BACKPORCH_LINES = 40;</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="comment">// Lines to skip before starting to draw first line of the screen content</span></div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment">// This includes V-sync signal + front porch</span></div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="keyword">volatile</span> <span class="keywordtype">int</span> s_current_scan_line;</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="keyword">volatile</span> uint8_t s_lines_to_skip;</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="keyword">volatile</span> uint8_t s_scan_line_index;</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="keyword">volatile</span> <span class="keyword">const</span> uint8_t * <span class="keyword">volatile</span> s_current_scan_line_data = __VGA_BUFFER_PTR;</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="keyword">extern</span> <span class="keyword">volatile</span> uint8_t s_vga_frames;</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="keyword">extern</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> timer0_millis;</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="comment">// ISR: Vsync pulse</span></div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span> ISR(TIMER1_OVF_vect)</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span> {</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  s_current_scan_line = 0;</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  s_scan_line_index = 0;</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  s_current_scan_line_data = __VGA_BUFFER_PTR;</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  s_lines_to_skip = V_BACKPORCH_LINES;</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  s_vga_frames++;</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  timer0_millis += 16;</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span> } <span class="comment">// end of TIMER1_OVF_vect</span></div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span> </div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="preprocessor">#if defined(CONFIG_VGA_128X64_ENABLE)</span></div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <span class="comment">/*__attribute__ ((noinline))*/</span> do_scan_line()</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span> {</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="comment">// output all pixels</span></div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keyword">asm</span> <span class="keyword">volatile</span>(</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="stringliteral">".rept 16\n\t"</span></div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span> </div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="stringliteral">"ld r24, Z+\n\t"</span> </div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="stringliteral">"out %[port], r24\n\t"</span></div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="stringliteral">"lsr r24\n\t"</span></div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="stringliteral">"nop\n\t"</span></div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="stringliteral">"out %[port], r24\n\t"</span></div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="stringliteral">"lsr r24\n\t"</span></div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="stringliteral">"out %[port], r24\n\t"</span></div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="stringliteral">"lsr r24\n\t"</span></div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="stringliteral">"nop\n\t"</span></div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="stringliteral">"out %[port], r24\n\t"</span></div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="stringliteral">"lsr r24\n\t"</span></div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="stringliteral">"nop\n\t"</span></div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="stringliteral">"out %[port], r24\n\t"</span></div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="stringliteral">"lsr r24\n\t"</span></div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="stringliteral">"nop\n\t"</span></div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="stringliteral">"out %[port], r24\n\t"</span></div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="stringliteral">"lsr r24\n\t"</span></div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="stringliteral">"nop\n\t"</span></div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="stringliteral">"out %[port], r24\n\t"</span></div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="stringliteral">"lsr r24\n\t"</span></div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="stringliteral">"nop\n\t"</span></div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="stringliteral">"out %[port], r24\n\t"</span></div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span> </div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="stringliteral">".endr\n\t"</span></div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="stringliteral">"nop\n\t"</span></div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="stringliteral">"ldi r24,0\n\t"</span></div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="stringliteral">"out %[port], r24 \n\t"</span></div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="stringliteral">"nop\n\t"</span></div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  :</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  : [port] <span class="stringliteral">"I"</span> (_SFR_IO_ADDR(PORTC)),</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="stringliteral">"z"</span> <span class="stringliteral">"I"</span> ((uint8_t *)s_current_scan_line_data )</div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  : <span class="stringliteral">"r24"</span>, <span class="stringliteral">"memory"</span></div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  );</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span> }</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="preprocessor">#elif defined(CONFIG_VGA_96X40_ENABLE)</span></div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <span class="comment">/*__attribute__ ((noinline))*/</span> do_scan_line()</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span> {</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="comment">// output all pixels</span></div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span> </div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keyword">asm</span> <span class="keyword">volatile</span>(</div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="stringliteral">".rept 12\n\t"</span></div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span> </div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="stringliteral">"ld r24, Z+\n\t"</span> <span class="comment">// r24 = 82227111</span></div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="comment">// "nop\n\t" // to make pixel wider in 96x40 mode</span></div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="stringliteral">"out %[port], r24\n\t"</span> <span class="comment">// 111</span></div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span> </div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="stringliteral">"ld r25, Z+\n\t"</span> <span class="comment">// r25 = 84447333</span></div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="stringliteral">"swap r24\n\t"</span> <span class="comment">// r24 = 71118222</span></div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="stringliteral">"out %[port], r24\n\t"</span> <span class="comment">// 222</span></div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span> </div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="stringliteral">"andi r24, 0x88\n\t"</span> <span class="comment">// r24 = 70008000</span></div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="stringliteral">"ld r20, Z+\n\t"</span> <span class="comment">// r20 = 86667555</span></div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="stringliteral">"out %[port], r25\n\t"</span> <span class="comment">// 333</span></div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span> </div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="stringliteral">"swap r25\n\t"</span> <span class="comment">// r25 = 73338444</span></div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="stringliteral">"lsr r24\n\t"</span> <span class="comment">// r24 = 00080007</span></div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="stringliteral">"lsr r24\n\t"</span> <span class="comment">// r24 = 00800070</span></div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="stringliteral">"out %[port], r25\n\t"</span> <span class="comment">// 444</span></div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span> </div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="stringliteral">"andi r25, 0x88\n\t"</span> <span class="comment">// r25 = 70008000</span></div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="stringliteral">"lsr r24\n\t"</span> <span class="comment">// r24 = 08000700</span></div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="stringliteral">"lsr r25\n\t"</span> <span class="comment">// r25 = 00080007</span></div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="stringliteral">"out %[port], r20\n\t"</span> <span class="comment">// 555</span></div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span> </div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="stringliteral">"swap r20\n\t"</span> <span class="comment">// r20 = 75558666</span></div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="stringliteral">"lsr r25\n\t"</span> <span class="comment">// r25 = 00800070</span></div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <span class="stringliteral">"or r24, r25\n\t"</span> <span class="comment">// r24 = 08800770</span></div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="stringliteral">"out %[port], r20\n\t"</span> <span class="comment">// 666</span></div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span> </div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="stringliteral">"andi r20, 0x88\n\t"</span> <span class="comment">// r20 = 70008000</span></div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="stringliteral">"lsr r20\n\t"</span> <span class="comment">// r20 = 00080007 b</span></div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="stringliteral">"or r24, r20\n\t"</span> <span class="comment">// r24 = 08880777 rgb</span></div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="stringliteral">"out %[port], r24\n\t"</span> <span class="comment">// 777</span></div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span> </div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="stringliteral">"swap r24\n\t"</span> <span class="comment">// r24 = 07770888</span></div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span> <span class="comment">// "nop\n\t" // to make pixel wider in 96x40 mode</span></div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="stringliteral">"nop\n\t"</span></div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="stringliteral">"out %[port], r24\n\t"</span> <span class="comment">// 888</span></div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span> </div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="stringliteral">".endr\n\t"</span></div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="comment">// "nop\n\t" // to make pixel wider in 96x40 mode</span></div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="stringliteral">"nop\n\t"</span></div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="stringliteral">"ldi r24,0\n\t"</span></div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="stringliteral">"out %[port], r24 \n\t"</span></div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="stringliteral">"nop\n\t"</span></div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  :</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  : [port] <span class="stringliteral">"I"</span> (_SFR_IO_ADDR(PORTC)),</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="stringliteral">"z"</span> <span class="stringliteral">"I"</span> ((uint8_t *)s_current_scan_line_data )</div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  : <span class="stringliteral">"r24"</span>, <span class="stringliteral">"r25"</span>, <span class="stringliteral">"r20"</span>, <span class="stringliteral">"memory"</span></div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  );</div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span> }</div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span> </div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span> <span class="comment">//#ifdef SSD1306_VGA_SLEEP_MODE</span></div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span> <span class="comment">//ISR(TIMER2_OVF_vect) // for start of h-sync pulse</span></div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span> <span class="comment">//#else</span></div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span> ISR(TIMER2_COMPB_vect) <span class="comment">// for end of h-sync pulse</span></div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span> <span class="comment">//#endif</span></div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span> {</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="comment">// ISR should work as fast as possible</span></div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keywordflow">if</span> (s_lines_to_skip)</div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  {</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  s_lines_to_skip--;</div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  }</div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (s_current_scan_line >= VGA_TOTAL_MODE_LINES)</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  {</div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  }</div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span> <span class="preprocessor"> #ifndef SSD1306_VGA_SLEEP_MODE</span></div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="comment">// This is dejitter code, it purpose to start pixels output at the same offset after h-sync</span></div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="keyword">asm</span> <span class="keyword">volatile</span>(</div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="stringliteral">" lds r24, %[timer0] \n\t"</span> <span class="comment">//</span></div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="stringliteral">" subi r24, %[toffset] \n\t"</span> <span class="comment">// some offset, calculated experimentally</span></div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="stringliteral">" andi r24, 7 \n\t"</span> <span class="comment">// use module 8 value from Timer 0 counter</span></div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="stringliteral">" ldi r31, pm_hi8(LW) \n\t"</span> <span class="comment">// load label address</span></div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="stringliteral">" ldi r30, pm_lo8(LW) \n\t"</span> <span class="comment">//</span></div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="stringliteral">" add r30, r24 \n\t"</span> <span class="comment">// no need to multiply by 2 since AVR addresses are half-values</span></div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="stringliteral">" adc r31, __zero_reg__ \n\t"</span> <span class="comment">//</span></div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="stringliteral">" ijmp \n\t"</span> <span class="comment">//</span></div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <span class="stringliteral">"LW: \n\t"</span> <span class="comment">//</span></div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <span class="stringliteral">" nop \n\t"</span> <span class="comment">//</span></div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="stringliteral">" nop \n\t"</span> <span class="comment">//</span></div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <span class="stringliteral">" nop \n\t"</span> <span class="comment">//</span></div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <span class="stringliteral">" nop \n\t"</span> <span class="comment">//</span></div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <span class="stringliteral">" nop \n\t"</span> <span class="comment">//</span></div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="stringliteral">" nop \n\t"</span> <span class="comment">//</span></div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="stringliteral">" nop \n\t"</span> <span class="comment">//</span></div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  :</div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  : [timer0] <span class="stringliteral">"i"</span> (&TCNT0),</div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  [toffset] <span class="stringliteral">"i"</span> ((uint8_t)DEJITTER_OFFSET)</div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  : <span class="stringliteral">"r30"</span>, <span class="stringliteral">"r31"</span>, <span class="stringliteral">"r24"</span>, <span class="stringliteral">"r25"</span>);</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span> <span class="preprocessor"> #endif</span></div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  do_scan_line();</div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  s_current_scan_line++;</div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  s_scan_line_index++;</div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <span class="keywordflow">if</span> ( s_scan_line_index >= __VGA_PIXEL_HEIGHT )</div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  {</div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  s_scan_line_index=0;</div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  s_current_scan_line_data += __VGA_LINE_BYTES;</div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  }</div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span> }</div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span> </div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span> <span class="preprocessor">#endif // VGA_CONTROLLER_DEBUG</span></div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span> </div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span> <span class="preprocessor">#if defined(CONFIG_VGA_128X64_ENABLE)</span></div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span> </div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span> <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> ssd1306_vga_controller_init(<span class="keywordtype">void</span>)</div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span> {</div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  <span class="comment">// if there is no builtin support then only debug mode is available</span></div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span> <span class="preprocessor">#if defined(VGA_CONTROLLER_DEBUG)</span></div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  ssd1306_vga_controller_128x64_init_no_output();</div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span> <span class="preprocessor">#elif defined(SSD1306_VGA_SLEEP_MODE)</span></div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  ssd1306_vga_controller_128x64_init_enable_output_no_jitter_fix();</div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span> <span class="preprocessor">#else</span></div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  ssd1306_vga_controller_128x64_init_enable_output();</div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span> }</div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span> </div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span> <span class="keywordtype">void</span> <a class="code" href="vga_8h.html#a2303fa117264d3e1e97f9e7ff72b64df">ssd1306_debug_print_vga_buffer</a>(<span class="keywordtype">void</span> (*func)(uint8_t))</div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span> {</div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  ssd1306_debug_print_vga_buffer_128x64(func);</div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span> }</div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span> </div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span> <span class="preprocessor">#elif defined(CONFIG_VGA_96X40_ENABLE)</span></div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span> </div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span> <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> ssd1306_vga_controller_init(<span class="keywordtype">void</span>)</div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span> {</div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  <span class="comment">// if there is no builtin support then only debug mode is available</span></div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span> <span class="preprocessor">#if defined(VGA_CONTROLLER_DEBUG)</span></div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  ssd1306_vga_controller_96x40_init_no_output();</div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span> <span class="preprocessor">#elif defined(SSD1306_VGA_SLEEP_MODE)</span></div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  ssd1306_vga_controller_96x40_init_enable_output_no_jitter_fix();</div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span> <span class="preprocessor">#else</span></div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  ssd1306_vga_controller_96x40_init_enable_output();</div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00296"></a><span class="lineno"> 296</span> }</div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span> </div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span> <span class="keywordtype">void</span> <a class="code" href="vga_8h.html#a2303fa117264d3e1e97f9e7ff72b64df">ssd1306_debug_print_vga_buffer</a>(<span class="keywordtype">void</span> (*func)(uint8_t))</div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span> {</div><div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  ssd1306_debug_print_vga_buffer_96x40(func);</div><div class="line"><a name="l00301"></a><span class="lineno"> 301</span> }</div><div class="line"><a name="l00302"></a><span class="lineno"> 302</span> </div><div class="line"><a name="l00303"></a><span class="lineno"> 303</span> <span class="preprocessor">#endif // CONFIG_VGA_XXX_ENABLE</span></div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span> </div><div class="line"><a name="l00305"></a><span class="lineno"> 305</span> <span class="preprocessor">#endif // SSD1306_BUILTIN_VGA_SUPPORT</span></div><div class="line"><a name="l00306"></a><span class="lineno"> 306</span> </div><div class="line"><a name="l00307"></a><span class="lineno"> 307</span> <span class="preprocessor">#ifdef __cplusplus</span></div><div class="line"><a name="l00308"></a><span class="lineno"> 308</span> }</div><div class="line"><a name="l00309"></a><span class="lineno"> 309</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span> </div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00312"></a><span class="lineno"> 312</span> </div><div class="ttc" id="io_8h_html"><div class="ttname"><a href="io_8h.html">io.h</a></div></div>
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<div class="ttc" id="vga_8h_html"><div class="ttname"><a href="vga_8h.html">vga.h</a></div></div>
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<div class="ttc" id="vga_8h_html_a2303fa117264d3e1e97f9e7ff72b64df"><div class="ttname"><a href="vga_8h.html#a2303fa117264d3e1e97f9e7ff72b64df">ssd1306_debug_print_vga_buffer</a></div><div class="ttdeci">void ssd1306_debug_print_vga_buffer(void(*func)(uint8_t))</div></div>
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