<div class="document"> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;">* 1、项目功能介绍</h3> <hr class="horizontal-splitline normal-bold-2"> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><strong><span style="color:#95a5a6;font-size:14px;">基于瑞萨芯片的时钟，复刻官方开源项目，通过四个数码管显示，具有显示时间，温湿度，等功能，四个按键调整时间，一个触摸按键调整显示温湿度。P1按下10秒控制调整时间还是分钟，P2，P3控制加减。引出串口下载口，和SWD下载口、</span></strong></p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;">*2、项目属性</h3> <hr class="horizontal-splitline normal-bold-2"> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><strong><span style="color:#95a5a6;font-size:14px;">复刻立创开源的项目</span></strong></p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;">* 3、开源协议</h3> <hr class="horizontal-splitline normal-bold-2"> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;">Public Domain</p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;">*4、硬件部分</h3> <hr class="horizontal-splitline normal-bold-2"> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="color:#95a5a6;font-size:14px;"><img src="//image.lceda.cn/pullimage/X9NOihoNGF35UWGC9q2oQLgeAKnGl6trvRJQCi1m.png" alt="" width="1100" height="763">原理图，第一次画跟着嘉立创的视频，不太熟练，不好的地方请提出来。</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;">我是第一次焊怎么小引脚多的芯片，第一次焊完，我用J-Link烧录时，连不上电脑，然后拿串口也尝试，在串口电源连上，过一段时间摸了摸芯片发现巨烫，然后赶紧断电，这时候估摸着芯片大概也许可能已经烧坏了，然后我就焊了下一块板子，用万用表测短路，花费几个小时最后能够成功下载程序，巨开心。</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;"><img src="//image.lceda.cn/pullimage/6hTLWmJXqI8xWk9AJYKMeiliYLUMmDCeoivYMYT5.png" alt="" width="471" height="280"></span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;">1.电源输入电路</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;">用type-c口直接引入5V电源，LED1是红灯。</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;"><img src="//image.lceda.cn/pullimage/fmKbHBep0meeQPgt34K6KKA5kexFrEvgs3nF2wYA.png" alt=""></span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;">2.SWD下载接口</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;">根据芯片手册引出SWCLK和SWDIO口方便下载。</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;"><img src="//image.lceda.cn/pullimage/cEk93Ez96D9gMZAcd923xz9aNjwgog6KPnPQCf6v.png" alt="" width="224" height="271"></span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;">3.串口下载接口</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;">根据芯片手册引出RXD,TXD口方便串口下载。</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;"><img src="//image.lceda.cn/pullimage/EVupA9GGOiQfozA5xrsO5LbqylAgjnsLfgSgjWsz.png" alt="" width="357" height="277"></span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;">4.蜂鸣器电路</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;">单片机引脚驱动能力有限，蜂鸣器功率大，这里加NPN三极管进行驱动。R9限流电阻，引脚给高电平，三极管导通，蜂鸣器响，反之三极管断开，蜂鸣器不响。R10下拉电阻，在没有蜂鸣器的情况下保证引脚口为0，防止上电不确定电平导致误操作。</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;"><img src="//image.lceda.cn/pullimage/H4rSwvsqjk5CkvIuxKXRE5bXeZGfuo2W2f8C4CGr.png" alt="" width="416" height="276">5.DHT11温湿度传感器</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;">通过查看DHT11手册引出电源引脚和数据引脚即可。</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;"><img src="//image.lceda.cn/pullimage/Mtxq8d7oBLPn6MchY10ldXoLyNtR4QfRrcrvx3Mj.png" alt="" width="422" height="427"></span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;">6.共阴极数码管</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;">使用视频教程一样的数码管引脚，这里引脚选择芯片无论哪个只需要能够输出高低电平就可以。</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;"><img src="//image.lceda.cn/pullimage/KwToAKrreunxwRaONYEU9TmocQgmSRnp0jxMuO9s.png" alt="" width="523" height="423">7.功能按键</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;">按键的电路比较简单，加了个硬件的消抖防止不稳定，软件消抖也要加。</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;"><img src="//image.lceda.cn/pullimage/KzgtGi8afl6rjVkGMh8aVm2B2LFhKoi4Tuh8oApk.png" alt="" width="687" height="422"></span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;">8.芯片</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;">这里要阅读芯片手册根据上面的介绍来添加晶振电容等，让芯片能够运行起来。瑞萨这款芯片自带触摸功能阅读手册可以得知触摸引脚的端口和必要的电容。</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;"><img src="//image.lceda.cn/pullimage/5ZLx4DoqEERF0RB2fufxDz7ecFg4AgHnUrPG6WEf.png" alt="" width="239" height="260">9.复位按键</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;">添加硬件消抖，连接芯片复位引脚。</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;"><img src="//image.lceda.cn/pullimage/vnaPD03gNwhRZ2YJ3mrDOtWrBE1fT9R5WVaIQB7a.png" alt="" width="407" height="261"></span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;">10.BOOT按键</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;">在串口下载中需要用到，串口下载中需要按下BOOT按键的同时按一下复位按键才能下载成功，这里如果不方便的话可以改为跳线帽或者直接焊两根线连起来就可以。</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;"><img src="//image.lceda.cn/pullimage/Xz2Xp2UQt3MYTeiLvAS9KCEX5xGgu6wpE7OshzdX.png" alt="" width="421" height="258"></span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;">11.触摸引脚</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;">瑞萨官网有关触摸按键详细的设计指南，上面有里程有电路图等等，非常方便。</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;"><img src="//image.lceda.cn/pullimage/tkwuOKcljy3nEmC0Zuul2sED4igNUf2M8ll7RCkV.png" alt="" width="682" height="533">12.锂电池充电电路</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;">用P沟道场效应管来划分type-c的供电和电池的供电，用一个电池充电芯片完成电池充电功能。</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><span style="font-size:14px;">硬件基本是这样，主要是看芯片手册上面有介绍，其次是焊芯片，加一点锡膏然后加助焊剂反复拖拉，耐心。</span></p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;">*5、软件部分</h3> <hr class="horizontal-splitline normal-bold-2"> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;">训练营提供了瑞萨工作人员肖工做视频技术顾问，视频很全我跟着做下来就成功了，需要注意的是用e2，也可以用keil。软件部分看训练营视频就可以完成。</p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;">*6、BOM清单</h3> <hr class="horizontal-splitline normal-bold-2"> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"><img src="//image.lceda.cn/pullimage/9zPM1Qa4pCfaNun1Dh2MITaTmgtOVX7zIhvaAweh.png" alt="" width="1200" height="599">这里数码管需要带时钟点的可以淘宝。</p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;">* 7、视频演示</h3> <hr class="horizontal-splitline normal-bold-2"> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height:1.8;"> </p> </div>