目 录
1 前言.......................................................................................................................................1
2 系统方案分析与选择论证...................................................................................................1
2.1 系统最终方案...................................................................................................................1
2.2 系统方案设计...................................................................................................................2
2.2.1 主控芯片方案................................................................................................................2
2.2.2 无线通信模块方案........................................................................................................2
2.2.3 温湿度传感器方案........................................................................................................3
2.2.4 显示模块方案................................................................................................................3
3 主要芯片介绍和系统模块硬件设计...................................................................................4
3.1 ATmega16L-8AI 单片机..................................................................................................4
3.2 nRF24L01 无线模块 ........................................................................................................5
3.2.1 nRF24L01 模块电路图 .................................................................................................5
3.2.2 nRF24L01 模块接口电路 .............................................................................................5
3.2.3 nRF24L01 模块供电电源 .............................................................................................6
3.2.4 nRF24L01 模块工作模式 .............................................................................................6
3.2.5 nRF24L01 模块工作原理 .............................................................................................7
3.2.6 nRF24L01 配置字 .........................................................................................................8
3.3 数字温湿度传感器 AM2301 ..........................................................................................8
3.3.1 AM2301 概述 ................................................................................................................8
3.3.2 AM2301 接口及温湿采集电路 ....................................................................................9
3.3.3 AM2301 工作原理 ........................................................................................................9
3.4 显示模块 TFT-LCD .......................................................................................................10
4 系统软件设计.....................................................................................................................11
4.1 单片机软件设计.............................................................................................................11
4.1.1 发送端流程..................................................................................................................11
4.1.2 接收端流程..................................................................................................................12
5 硬件电路.............................................................................................................................13
5.1 硬件制作.........................................................................................................................13
