分享一个五向开关更少IO的设计

<font size="4">HAL_ADC_Start(&hadc1);

HAL_ADC_PollForConversion(&hadc1, 50);

if(HAL_IS_BIT_SET(HAL_ADC_GetState(&hadc1), HAL_ADC_STATE_REG_EOC))

{

ADC_Value = HAL_ADC_GetValue(&hadc1);

}

HAL_Delay(1000);</font>

<ul style="font-style: italic; list-style: decimal; color: rgb(56, 58, 66); font-family: &quot;DejaVu Sans Mono&quot;, &quot;Ubuntu Mono&quot;, &quot;Anonymous Pro&quot;, &quot;Droid Sans Mono&quot;, Menlo, Monaco, Consolas, Inconsolata, Courier, monospace, &quot;PingFang SC&quot;, &quot;Microsoft YaHei&quot;, sans-serif; font-size: 14px; white-space-collapse: preserve; margin-left: 30px !important;"><li style="list-style: decimal-leading-zero; line-height: 14px; word-break: break-all; font-size: 12px; color: inherit; margin-left: 0px !important; padding: 5px !important; font-style: normal !important; border-left: 1px solid rgb(221, 221, 221) !important;"><span class="hljs-keyword" style="color: rgb(166, 38, 164);">if</span> ((ADC_Value >= <span class="hljs-number" style="color: rgb(152, 104, 1);">0</span>)&&(ADC_Value < <span class="hljs-number" style="color: rgb(152, 104, 1);">1000</span>))

</li><li style="list-style: decimal-leading-zero; line-height: 14px; word-break: break-all; font-size: 12px; margin-left: 0px !important; padding: 5px !important; font-style: normal !important; border-left: 1px solid rgb(221, 221, 221) !important;">    {

</li><li style="list-style: decimal-leading-zero; line-height: 14px; word-break: break-all; font-size: 12px; color: inherit; margin-left: 0px !important; padding: 5px !important; font-style: normal !important; border-left: 1px solid rgb(221, 221, 221) !important;">            io=1;

</li><li style="list-style: decimal-leading-zero; line-height: 14px; word-break: break-all; font-size: 12px; margin-left: 0px !important; padding: 5px !important; font-style: normal !important; border-left: 1px solid rgb(221, 221, 221) !important;">    }

</li><li style="list-style: decimal-leading-zero; line-height: 14px; word-break: break-all; font-size: 12px; color: inherit; margin-left: 0px !important; padding: 5px !important; font-style: normal !important; border-left: 1px solid rgb(221, 221, 221) !important;">    <span class="hljs-keyword" style="color: rgb(166, 38, 164);">else</span> <span class="hljs-keyword" style="color: rgb(166, 38, 164);">if</span> ((ADC_Value >= <span class="hljs-number" style="color: rgb(152, 104, 1);">1000</span>) &&(ADC_Value < <span class="hljs-number" style="color: rgb(152, 104, 1);">2000</span>))

</li><li style="list-style: decimal-leading-zero; line-height: 14px; word-break: break-all; font-size: 12px; margin-left: 0px !important; padding: 5px !important; font-style: normal !important; border-left: 1px solid rgb(221, 221, 221) !important;">    {

</li><li style="list-style: decimal-leading-zero; line-height: 14px; word-break: break-all; font-size: 12px; color: inherit; margin-left: 0px !important; padding: 5px !important; font-style: normal !important; border-left: 1px solid rgb(221, 221, 221) !important;">            io=2;

</li><li style="list-style: decimal-leading-zero; line-height: 14px; word-break: break-all; font-size: 12px; margin-left: 0px !important; padding: 5px !important; font-style: normal !important; border-left: 1px solid rgb(221, 221, 221) !important;">    }

</li><li style="list-style: decimal-leading-zero; line-height: 14px; word-break: break-all; font-size: 12px; color: inherit; margin-left: 0px !important; padding: 5px !important; font-style: normal !important; border-left: 1px solid rgb(221, 221, 221) !important;">    <span class="hljs-keyword" style="color: rgb(166, 38, 164);">else</span> <span class="hljs-keyword" style="color: rgb(166, 38, 164);">if</span> ((ADC_Value >= <span class="hljs-number" style="color: rgb(152, 104, 1);">2000</span>)&& (ADC_Value < <span class="hljs-number" style="color: rgb(152, 104, 1);">3000</span>))

</li><li style="list-style: decimal-leading-zero; line-height: 14px; word-break: break-all; font-size: 12px; margin-left: 0px !important; padding: 5px !important; font-style: normal !important; border-left: 1px solid rgb(221, 221, 221) !important;">    {

</li><li style="list-style: decimal-leading-zero; line-height: 14px; word-break: break-all; font-size: 12px; color: inherit; margin-left: 0px !important; padding: 5px !important; font-style: normal !important; border-left: 1px solid rgb(221, 221, 221) !important;">            io=3;

</li><li style="list-style: decimal-leading-zero; line-height: 14px; word-break: break-all; font-size: 12px; margin-left: 0px !important; padding: 5px !important; font-style: normal !important; border-left: 1px solid rgb(221, 221, 221) !important;">    }

</li><li style="list-style: decimal-leading-zero; line-height: 14px; word-break: break-all; font-size: 12px; color: inherit; margin-left: 0px !important; padding: 5px !important; font-style: normal !important; border-left: 1px solid rgb(221, 221, 221) !important;">    <span class="hljs-keyword" style="color: rgb(166, 38, 164);">else</span> <span class="hljs-keyword" style="color: rgb(166, 38, 164);">if</span> ((ADC_Value >= <span class="hljs-number" style="color: rgb(152, 104, 1);">3000</span>)&&( ADC_Value < <span class="hljs-number" style="color: rgb(152, 104, 1);">4000</span>))

</li><li style="list-style: decimal-leading-zero; line-height: 14px; word-break: break-all; font-size: 12px; margin-left: 0px !important; padding: 5px !important; font-style: normal !important; border-left: 1px solid rgb(221, 221, 221) !important;">    {</li><li style="list-style: decimal-leading-zero; line-height: 14px; word-break: break-all; font-size: 12px; margin-left: 0px !important; padding: 5px !important; font-style: normal !important; border-left: 1px solid rgb(221, 221, 221) !important;">            io=4;

</li><li style="list-style: decimal-leading-zero; line-height: 14px; word-break: break-all; font-size: 12px; color: inherit; margin-left: 0px !important; padding: 5px !important; font-style: normal !important; border-left: 1px solid rgb(221, 221, 221) !important;">    }</li></ul>