PC机上开串口调试助手，发送一个字符到开发板（中间通过串口线相连） FPGA收到字符后，回发给PC机上，在串口助手上显示 -On the PC, open the serial port on a PC debugging assistant to send a character to the development board (in the middle connected by serial cable) FPGA received character back to the s

串口调试助手8通道 modbus crc校验码自动加载-Assistant 8-channel serial debugging modbus crc checksum automatically loaded