一个C文件 /* 引脚链接用的串口3 VCC--+5V GND--GND BUSY--PD2 RXD--PB10 TXD--PB11 喇叭按电路图正负接 */(a C file / * pin link serial port 3 VCC--+5V GND--GND BUSY--PD2 RXD--PB10 TXD--PB11 The horn is connected to the circuit diagram)

查看温度湿度，通过串口连接。方便好用，推荐新手，尝试串口连接获取数据，经行保存等操作。(Check the temperature and humidity,link through the serial port.)

vc实现的串口程序开发相关动态链接库，可以发送接受，简单实用(VC serial port program development related dynamic link library, can be sent to accept, simple and practical)