29 lines
562 B
Python
29 lines
562 B
Python
import math
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M_PI = 3.14159265358979323846
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def sine(val, r, scale, stepping):
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global M_PI, flip
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re = int(math.sin(val * (M_PI * scale) / r) * r) + r
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re = re & 0xff
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re = re * stepping
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return re
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def main():
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cnt = 64
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stepping = 1
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upper = 0xff
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s = "#define PWM_SINE_MAX %i\nuint8_t pwm_sine_table[] = {\n" % cnt
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for i in range(0, cnt):
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if i > 0 and i % 16 == 0:
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s += "\n"
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s += "0x%02x," % sine(i, upper / 2, (float(upper) / cnt), stepping)
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s = s[:-1]
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s += "\n};\n"
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print s
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main()
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