25 lines
573 B
C
25 lines
573 B
C
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// THIS IS NOT ARDUINO CODE -- DON'T INCLUDE IN YOUR SKETCH. It's a
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// command-line tool that outputs an 8-bit sine table to stdout;
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// redirect or copy and paste the results into header file for use
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// with sketches.
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#include <stdio.h>
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#include <math.h>
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int main(int argc, char *argv[]) {
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int i;
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(void)printf("static const int8_t PROGMEM sinetab[256] = {\n ");
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for(i=0; i<256; i++) {
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(void)printf("%4d",
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(int)(sin((double)i / 128.0 * M_PI) * 127.5 - 0.5));
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if(i < 255) (void)printf(((i & 7) == 7) ? ",\n " : ",");
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}
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(void)puts("\n};");
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return 0;
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}
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