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<p></p> <p><b>New page</b></p><div>[[Category:Coding]]<br /> ==General==<br /> ===Basic Variable Types===<br /> ====Number Types====<br /> C and C++ : char, int, long, unsigned long<br /> Arduino : byte, word<br /> inttypes : int8_t, int16_t, int32_t; uint8_t, uint16_t, uint32_t<br /> preferable use inttypes!<br /> inttype : Arduino / C/C++<br /> uint8_t : byte<br /> uint16_t : unsigned int<br /> uint32_t : unsigned long<br /> <br /> ====float====<br /> int to float<br /> float f = float(i);<br /> ====array====<br /> initialize all array values with 0<br /> unsigned int barchart_data[128]; <br /> barchart_data[128] = {0};<br /> <br /> shift array to left<br /> for (unsigned int i = 0; i &lt; px_x - 1; i++)<br /> { // ends at px_x - 2<br /> barchart_data[i] = barchart_data[i + 1];<br /> }<br /> length of array<br /> sizeof(data) / sizeof(data[0])<br /> <br /> ===Pre Compiler Defines===<br /> Using pre compiler defines it can be chosen which part of the sources are actually imported and compiled<br /> #define TM_LOAD_DEVICE_OLED_128X32 1<br /> ...<br /> #if TM_LOAD_DEVICE_OLED_128X32 == 1<br /> #include &quot;TM_OLED_128x32_Class.h&quot;<br /> auto my_oled = TM_OLED_128x32_Class();<br /> #endif<br /> <br /> ==Arduino specific==</div>

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