#第九届立创电赛#基于STM32温湿度检测仪 - 立创电子设计大赛

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#第九届立创电赛#基于STM32温湿度检测仪

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<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> <ul> <li>温湿度测量仪项目使用STM32G030K6T6芯片作为主控芯片，Arm Cortex-M0+内核，最大主频64Mhz，具有32KB的Flash、8K的SRAM，供电电压在2.0V~3.6V。</li> <li>使用IIC通信，采集来自sht40传感器的温湿度数据，通过数码管显示温湿度数据。</li> <li>空闲时间进入低功耗睡眠模式，按键进入正常运行模式，运行结束自动进入低功耗睡眠模式，等待按键唤醒。</li> <li>干电池供电采用两节5号电池。</li> </ul>   <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" /> 首次公开。 <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" /> GPL 3.0    <ul> <li>第三版GNU通用公共许可证，由自由软件基金会（FSF）发布。</li> <li>只要在工程项目中使用了GPL协议下的产品，那么这个工程项目必须采用GPL协议，即为：开源和免费。</li> </ul>     <<代码的开源与免费使用和引用、修改、衍生代码的开源与免费使用，但不允许修改后和衍生的代码做为闭源的商业软件发布和销售。>> <ul> <li>开源协议说明链接：<a href="<a href="https://oshwhub.com/posts/3203787b8f8044748469e47caf39c5ef" target="_blank">https://oshwhub.com/posts/3203787b8f8044748469e47caf39c5ef</a>" target="_blank" rel="noopener">立创开源硬件平台公告【帮助文档】开源硬件平台开源协议说明</a></li> </ul> <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> <ul> <li>STM32G030K6T6，复位NRST默认上拉，外接LSE时钟源32.768kHz</li> </ul> <hr class="horizontal-splitline normal-bold-2" /> <img src="<a href="https://image.lceda.cn/oshwhub/2954492da983411f837b2221c075a488.png" target="_blank">https://image.lceda.cn/oshwhub/2954492da983411f837b2221c075a488.png</a>" />   <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> <h4>STM32CubeMX配置工程代码</h4> <ul> <li>具体配置请打开附件里的ioc文件进行查看。</li> </ul> <img src="<a href="https://image.lceda.cn/oshwhub/5b153942db5b4886b495eb1a2b6ca9e0.jpg" target="_blank">https://image.lceda.cn/oshwhub/5b153942db5b4886b495eb1a2b6ca9e0.jpg</a>" width="1100" height="570" /> <img src="<a href="https://image.lceda.cn/oshwhub/75707b00e56842e8b505bf14338237e0.jpg" target="_blank">https://image.lceda.cn/oshwhub/75707b00e56842e8b505bf14338237e0.jpg</a>" width="1102" height="371" />   <h4>MDK编程工程代码</h4> <ul> <li><<主程序>></li> </ul> <img src="<a href="https://image.lceda.cn/oshwhub/f067c0fd51374dd390ad673a3b9e05eb.png" target="_blank">https://image.lceda.cn/oshwhub/f067c0fd51374dd390ad673a3b9e05eb.png</a>" width="1088" height="772" /> <img src="<a href="https://image.lceda.cn/oshwhub/05528a83aa374e1e9e6f0adda5e9aed6.png" target="_blank">https://image.lceda.cn/oshwhub/05528a83aa374e1e9e6f0adda5e9aed6.png</a>" width="1089" height="357" />   <ul> <li><<部分数码管驱动代码>></li> </ul> <img src="<a href="https://image.lceda.cn/oshwhub/8f336c043dc14fa88f0a0200c6be57bc.png" target="_blank">https://image.lceda.cn/oshwhub/8f336c043dc14fa88f0a0200c6be57bc.png</a>" width="1091" height="672" />   <ul> <li><<获取SHT40传感器温湿度数据>></li> </ul> <img src="<a href="https://image.lceda.cn/oshwhub/6b73ff53199b4fd786d574a797bcf3f8.png" target="_blank">https://image.lceda.cn/oshwhub/6b73ff53199b4fd786d574a797bcf3f8.png</a>" width="1082" height="357" />   <ul> <li><<ADC采集电压>></li> <li>volvalue = (adc_value(3.03F-0.15F))2/4095.0F</li> <li>在前文看到的ADC采集电路，由两个等值电阻串联对锂电池于这部分的电压进行了分压，所以ADC采集的是总电压的一半，这里进行了2</li> <li>实测MCU的电压VDD/VDDA的电压：3.01V，至于减去的0.15算是误差吧（之前也试过一个HK芯片来ADC采集电压，精度到了小数点三位数，但是对现在的这个MCU进行ADC测试发现数据还存在较大误差，不知具体原因）</li> <li>STM32G030的ADC分辨率为12位，所以4095 = 212-1 ，表示：内部电压3V可以分割为4095份，每份占比0.000732伏特（V），代码里的公式其实就是一个比例对换。</li> <li>注意：这里所要采集的对象，电压不能超过VDD，否则测得的电源电压不准确，因为超过测量范围！</li> </ul> <img src="<a href="https://image.lceda.cn/oshwhub/e7988a89921e422f8ff4e063d89a7fbd.png" target="_blank">https://image.lceda.cn/oshwhub/e7988a89921e422f8ff4e063d89a7fbd.png</a>" width="1097" height="473" /> <h3><img src="<a href="https://image.lceda.cn/oshwhub/82f8cb4ac8bf4444ac8bc0aea262b605.png" target="_blank">https://image.lceda.cn/oshwhub/82f8cb4ac8bf4444ac8bc0aea262b605.png</a>" width="1092" height="479" /></h3> <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" /> <table border="2px" width="100%"> <tbody> <tr> <td width="67" height="28">编号</td> <td width="71">数量</td> <td width="223">备注</td> <td width="375">位号</td> <td width="473">封装</td> <td width="117">数值</td> <td width="175">立创商城编号</td> <td width="169">立创商城价格</td> <td width="278">Manufacturer</td> <td width="137">材料费用</td> </tr> <tr> <td height="28">1</td> <td>9</td> <td>100nF</td> <td>C1,C2,C8,C10,C12,C13,C15,C17,C18</td> <td>C0603</td> <td>100nF</td> <td>C14663</td> <td>0.013981</td> <td>YAGEO(国巨)</td> <td>0.125829</td> </tr> <tr> <td height="28">2</td> <td>2</td> <td>20pF</td> <td>C3,C4</td> <td>C0603</td> <td>20pF</td> <td>C105621</td> <td>0.014605</td> <td>YAGEO(国巨)</td> <td>0.02921</td> </tr> <tr> <td height="28">3</td> <td>5</td> <td>1uF</td> <td>C5,C6,C7,C14,C16</td> <td>C0603</td> <td>1uF</td> <td>C59302</td> <td>0.030538</td> <td>FH(风华)</td> <td>0.15269</td> </tr> <tr> <td height="28">4</td> <td>2</td> <td>10uF</td> <td>C9,C11</td> <td>C0603</td> <td>10uF</td> <td>C77044</td> <td>0.067488</td> <td>muRata(村田)</td> <td>0.134976</td> </tr> <tr> <td height="28">5</td> <td>1</td> <td>HC-XH-2AW-G</td> <td>CN0</td> <td>CONN-TH_2P-P2.50_HC-XH-2AW-G</td> <td> </td> <td>C5341208</td> <td>0.107373</td> <td>HCTL(华灿天禄)</td> <td>0.107373</td> </tr> <tr> <td height="28">6</td> <td>2</td> <td>MBR120LSF</td> <td>D1,D2</td> <td>SOD-123_L2.8-W1.8-LS3.7-RD</td> <td> </td> <td>C130880</td> <td>0.2192</td> <td>SHIKUES(时科)</td> <td>0.4384</td> </tr> <tr> <td height="28">7</td> <td>1</td> <td>BSMD0805-050-6V</td> <td>F1</td> <td>F0805</td> <td> </td> <td>C883108</td> <td>0.276183</td> <td>BHFUSE(佰宏)</td> <td>0.276183</td> </tr> <tr> <td height="28">8</td> <td>1</td> <td>CBG160808U000T</td> <td>L1</td> <td>L0603</td> <td> </td> <td>C43163</td> <td>0.024165</td> <td>FH(风华)</td> <td>0.024165</td> </tr> <tr> <td height="28">9</td> <td>2</td> <td>SP420281N</td> <td>LED1,LED2</td> <td>LED-SEG-TH_SP420281N</td> <td> </td> <td>C122944</td> <td>2.1663</td> <td>ARKLED(方舟)</td> <td>4.3326</td> </tr> <tr> <td height="28">10</td> <td>2</td> <td>XL-1608UBC-04</td> <td>LED3,LED4</td> <td>LED0603-RD_BLUE</td> <td> </td> <td>C965807</td> <td>0.02253</td> <td>XINGLIGHT(成兴光)</td> <td>0.04506</td> </tr> <tr> <td height="28">11</td> <td>1</td> <td>SZYY0603R</td> <td>LED5</td> <td>LED0603-R-RD</td> <td> </td> <td>C434419</td> <td>0.041609</td> <td>yongyu(永裕光电)</td> <td>0.041609</td> </tr> <tr> <td height="28">12</td> <td>1</td> <td>XL-1608PGC-06</td> <td>LED6</td> <td>LED0603-RD_GREEN</td> <td> </td> <td>C7371905</td> <td>0.0586</td> <td>XINGLIGHT(成兴光)</td> <td>0.0586</td> </tr> <tr> <td height="28">13</td> <td>4</td> <td>M2</td> <td>P1,P2,P3,P4</td> <td>M2</td> <td> </td> <td> </td> <td>0</td> <td> </td> <td>0</td> </tr> <tr> <td height="28">14</td> <td>3</td> <td>10kΩ</td> <td>R1,R8,R13</td> <td>R0603</td> <td>10kΩ</td> <td>C25804</td> <td>0.005579</td> <td>UNI-ROYAL(厚声)</td> <td>0.016737</td> </tr> <tr> <td height="28">15</td> <td>6</td> <td>4.7kΩ</td> <td>R2,R3,R4,R5,R6,R7</td> <td>R0603</td> <td>4.7kΩ</td> <td>C23162</td> <td>0.006472</td> <td>UNI-ROYAL(厚声)</td> <td>0.038832</td> </tr> <tr> <td height="28">16</td> <td>2</td> <td>5.1kΩ</td> <td>R9,R10</td> <td>R0603</td> <td>5.1kΩ</td> <td>C23186</td> <td>0.006186</td> <td>UNI-ROYAL(厚声)</td> <td>0.012372</td> </tr> <tr> <td height="28">17</td> <td>1</td> <td>2.4kΩ</td> <td>R11</td> <td>R0603</td> <td>2.4kΩ</td> <td>C22940</td> <td>0.006003</td> <td>UNI-ROYAL(厚声)</td> <td>0.006003</td> </tr> <tr> <td height="28">18</td> <td>1</td> <td>250mΩ</td> <td>R12</td> <td>R0603</td> <td>250mΩ</td> <td>C422951</td> <td>0.022713</td> <td>UNI-ROYAL(厚声)</td> <td>0.022713</td> </tr> <tr> <td height="28">19</td> <td>1</td> <td>22kΩ</td> <td>R14</td> <td>R0603</td> <td>22kΩ</td> <td>C31850</td> <td>0.006147</td> <td>UNI-ROYAL(厚声)</td> <td>0.006147</td> </tr> <tr> <td height="28">20</td> <td>1</td> <td>GT-TC054A-H035-L1</td> <td>SW1</td> <td>SW-SMD_L7.8-W3.5-P4.20-EH</td> <td> </td> <td>C778158</td> <td>0.24573</td> <td>G-Switch(品赞)</td> <td>0.24573</td> </tr> <tr> <td height="28">21</td> <td>1</td> <td>SK12D07VG3</td> <td>SW2</td> <td>SW-TH_SK12D07VG3</td> <td> </td> <td>C431547</td> <td>0.130586</td> <td>SHOU HAN(首韩)</td> <td>0.130586</td> </tr> <tr> <td height="28">22</td> <td>2</td> <td>Test-Point</td> <td>SWCLK,SWDIO</td> <td>Test-Point-0.5mm</td> <td> </td> <td> </td> <td>0</td> <td> </td> <td>0</td> </tr> <tr> <td height="28">23</td> <td>1</td> <td>STM32G030K6T6</td> <td>U1</td> <td>LQFP-32_L7.0-W7.0-P0.80-LS9.0-BL</td> <td> </td> <td>C529331</td> <td>4.7</td> <td>ST(意法半导体)</td> <td>4.7</td> </tr> <tr> <td height="28">24</td> <td>3</td> <td>SN74HC595PWR</td> <td>U2,U3,U4</td> <td>TSSOP-16_L5.0-W4.4-P0.65-LS6.4-BL</td> <td> </td> <td>C273642</td> <td>1.2759</td> <td>TI(德州仪器)</td> <td>3.8277</td> </tr> <tr> <td height="28">25</td> <td>1</td> <td>GT-USB-7002C</td> <td>U5</td> <td>USB-C-SMD_GT-USB-7002C</td> <td> </td> <td>C5117884</td> <td>0.417367</td> <td>G-Switch(品赞)</td> <td>0.417367</td> </tr> <tr> <td height="28">26</td> <td>1</td> <td>TC4056A</td> <td>U6</td> <td>ESOP-8_L4.9-W3.9-P1.27-LS6.0-BR-EP3.3</td> <td> </td> <td>C84051</td> <td>0.312037</td> <td>FM(富满)</td> <td>0.312037</td> </tr> <tr> <td height="28">27</td> <td>1</td> <td>AO3401-ED</td> <td>U7</td> <td>SOT-23-3_L2.9-W1.3-P0.95-LS2.4-BR</td> <td> </td> <td>C4748724</td> <td>0.112913</td> <td>HXY MOSFET(华轩阳电子)</td> <td>0.112913</td> </tr> <tr> <td height="28">28</td> <td>1</td> <td>SHT40-AD1B-R2</td> <td>U9</td> <td>DFN-4_L1.5-W1.5-P0.8-TL-EP</td> <td> </td> <td>C2909890</td> <td>11.51</td> <td>Sensirion(瑞士盛思锐)</td> <td>11.51</td> </tr> <tr> <td height="28">29</td> <td>1</td> <td>JSM6206A3.0XG</td> <td>U10</td> <td>SOT-23-3_L2.9-W1.6-P1.90-LS2.8-BR</td> <td> </td> <td>C2845116</td> <td>0.191449</td> <td>JSMSEMI(杰盛微)</td> <td>0.191449</td> </tr> <tr> <td height="30">30</td> <td>1</td> <td>32.768kHz</td> <td>X1</td> <td>OSC-SMD_L3.2-W1.5</td> <td>32.768kHz</td> <td>C390740</td> <td>1.2448</td> <td>JGHC(晶光华)</td> <td>1.2448</td> </tr> <tr> <td height="120">总数：</td> <td>61</td> <td>总价：</td> <td>28.562081（不含锂电池）</td> <td width="473">MCU、sht40可以在某宝上采购，一个不到3.00元，3个数码管在某宝上也不到1.5元</td> <td width="117"> </td> <td width="175">如果不算MCU、数码管、sht40,那么得到：7.469403</td> <td width="169">7.469403+3+1.5=11.969403</td> <td width="278">有些元件还可以再节省些，预估（不含锂电池）总价至少小于12元</td> <td width="137"> </td> </tr> </tbody> </table>   <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、大赛LOGO验证</h3> <hr class="horizontal-splitline normal-bold-2" /> <img src="//image.lceda.cn/oshwhub/ea31469bbfde432091c08ae19eab6274.jpg" />   </div>