电赛时获取小球位置并输出，支持串口打印图像(During the race, the ball position is obtained and output, which supports the serial port to print the image)

可以实现2017年全国大学生电子设计大赛B题（滚球控制系统要求的所有功能），包含上位机程序（HMI串口屏）(Can achieve the 2017 National Undergraduate Electronic Design Contest B (all functions required by the ball control system), including the host computer program (HMI