单片机课程设计报告
目 录
1 前言······························································3
2 方案设计··························································3
3 系统的硬件设计····················································4
3.1 主控制器························································4
3.2 显示电路························································5
3.3 温度传感器工作原理··············································6
3.4 温度传感器接口电路··············································9
4 系统的软件设计····················································9
4.1 主程序··························································9
4.2 温度测量························································9
4.2.1 初始化 DS18B20················································9
4.2.2 等待应答信号·················································10
4.2.3 DS18B20 读字节···············································10
4.2.4 DS18B20 写字节················································11
4.2.5 启动温度测量·················································12
4.2.6 读取测量结果·················································13
4.2.7 各算法流程图·················································14
4.3 数码管显示·····················································15
5 系统的测试与总结·················································16
5.1 测试时的图片···················································16
5.2 总结···························································17
参考文献···························································18
致谢词·····························································19
附录 1 原理图·······················································20
附录 2 源程序清单···················································20
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