【ST MEMS防水气压传感器LPS27HHW测评】+STM32F411驱动OLED屏显示
<div class='showpostmsg'><p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="background:white"><span style="font-family:"微软雅黑","sans-serif""><span style="color:#999999"> 前面介绍了用串口来输出</span></span></span></span></span><a href="https://bbs.eeworld.com.cn/tag_%E6%B0%94%E5%8E%8B%E4%BC%A0%E6%84%9F%E5%99%A8.html" target="_blank" title="气压传感器">气压传感器</a><a href="https://bbs.eeworld.com.cn/tag_LPS27HHW.html" target="_blank" title="LPS27HHW">LPS27HHW</a><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="background:white"><span style="font-family:"微软雅黑","sans-serif""><span style="color:#999999">的值，但作为一个检测装置的话若仅凭串口来输出信息是很不足的，为此我们可以为它配上一个OLED屏来直接显示检测值，这样更适合做一种产品的设计。</span></span></span></span></span></p><p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="background:white"><span style="font-family:"微软雅黑","sans-serif""><span style="color:#999999">该显示屏是一款单色的0.91'的OLED屏，使用I2C接口来工作，为便于在任意的引脚来使用，故采用I/O模拟I2C的方式来实现。</span></span></span></span></span></p>
<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="background:white"><span style="font-family:"微软雅黑","sans-serif""><span style="color:#999999">由于STM32F411开发板带有Arduino接口，自然最好的使用方式就是利用该接口上离电源引脚最近的PA5和PA6。唯一奇葩的是现在的OLED屏非弄个GND在先，让本可以不用连线的用法就此夭折，只好用插线来交换线序，其实现效果如图1所示。</span></span></span></span></span></p>
<p style="text-align:justify"></p>
<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="background:white"><span style="font-family:"微软雅黑","sans-serif""><span style="color:#999999">图1 OLED屏实现方式</span></span></span></span></span></p>
<p style="text-align:justify"> </p>
<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><i><span style="background:white"><span style="font-family:"微软雅黑","sans-serif""><span style="color:#999999">实现数值模拟显示的效果如图2所示，其主程序为：</span></span></span></i></span></span></p>
<p style="text-align:justify"></p>
<p><span style="font-size:10.5pt"><span style="background:white"><span style="font-family:"微软雅黑","sans-serif""><span style="color:#999999">图2 模拟数值显示</span></span></span></span></p>
<pre>
<code class="language-cpp">int main(void)
{
int pres=1000,temp=21;
HAL_Init();
/* Configure the system clock to 100 MHz */
SystemClock_Config();
APP_OLED_Init();
OLED_Init();
OLED_Clear();
OLED_ShowString(8,0,"STM32F411RE",16);
OLED_ShowString(8,2,"OLED & LPS27HHW",16);
OLED_ShowCHinese(80,0,0);
OLED_ShowCHinese(96,0,1);
OLED_ShowCHinese(112,0,2);
HAL_Delay(1000);
HAL_Delay(1000);
OLED_Clear();
OLED_ShowString(8,0,"pres= hPa",16);
OLED_ShowString(8,2,"temp= degC",16);
OLED_ShowNum(48,0,pres,5,16);
OLED_ShowNum(48,2,temp,5,16);
while (1);
}
</code></pre>
<p> </p>
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<p>这个压力传感器还不错！</p>
w494143467 发表于 2021-1-8 10:53
这个压力传感器还不错！
<p>GD32E503V-EVAL很不错呀，真幸运！</p>
jinglixixi 发表于 2021-1-8 11:22
GD32E503V-EVAL很不错呀，真幸运！
<p>哈哈哈，彼此彼此！</p>
<p>为什么图片和代码都没有看到和传感器相关的东西呢？</p> littleshrimp 发表于 2021-1-8 13:19
为什么图片和代码都没有看到和传感器相关的东西呢？
<p>一切都在为这个宝贝儿做配套</p>
<p>感谢分享</p>
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