串口Serial函数总结
https://blog.csdn.net/hhaowang/article/details/88529842
arduino中的serial .available()和serial.read()是区别
https://blog.csdn.net/qq_26164209/article/details/83274451?utm_medium=distribute.pc_relevant.none-task-blog-BlogCommendFromBaidu-4.control&depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromBaidu-4.control
Processing笔记06—Processing控制Arduino点灯
//www.greatytc.com/writer#/notebooks/49135435/notes/82377092