pwmduty.c

利用PWM产生高精度正弦波,从PWM引脚输出的脉冲信号经过简单的低通滤波后,可以得到平滑的正弦波,波的频率可以微调

//PWMDuty.c
const int PWMDuty[]=
{
127,
133,
139,
145,
151,
157,
163,
169,
175,
180,
185,
190,
195,
199,
204,
207,
211,
214,
217,
219,
222,
223,
225,
226,
226,
227,
226,
226,
225,
223,
222,
219,
217,
214,
211,
207,
204,
199,
195,
190,
185,
180,
175,
169,
163,
157,
151,
145,
139,
133,
127,
120,
114,
108,
102,
96,
90,
84,
78,
73,
68,
63,
58,
54,
49,
46,
42,
39,
36,
34,
31,
30,
28,
27,
27,
27,
27,
27,
28,
30,
31,
34,
36,
39,
42,
46,
49,
54,
58,
63,
68,
73,
78,
84,
90,
96,
102,
108,
114,
120,
127
};