AD模块pcf8591，DA产生正弦波程序-AD module pcf8591, DA program generates a sine wave

利用AD模块产生正弦波、锯齿波、三角波,已在KINST开发板实验测试，仅供学习参考-Using AD module to generate sine wave, sawtooth wave, triangle wave, has been developed in KINST plate test, for educational purposes only