复旦微FM33LC046N评测+RTC时钟

逆夏的流年 发表于 2021-2-27 11:07

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<ol>
<li style="white-space: pre-wrap; text-align: left; line-height: 1.75; font-size: 14px;" yne-bulb-block="paragraph">M33LC046N RTC时钟特性</li>
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<ul>
<li style="white-space: pre-wrap; text-align: left; line-height: 1.75; font-size: 14px;" yne-bulb-block="paragraph">BCD时间，日期可达2099年</li>
<li style="white-space: pre-wrap; text-align: left; line-height: 1.75; font-size: 14px;" yne-bulb-block="paragraph">周期唤醒中断</li>
<li style="white-space: pre-wrap; text-align: left; line-height: 1.75; font-size: 14px;" yne-bulb-block="paragraph">闹钟功能</li>
<li style="white-space: pre-wrap; text-align: left; line-height: 1.75; font-size: 14px;" yne-bulb-block="paragraph">周期信号定时输出</li>
<li style="white-space: pre-wrap; text-align: left; line-height: 1.75; font-size: 14px;" yne-bulb-block="paragraph">数字调校</li>
<li style="white-space: pre-wrap; text-align: left; line-height: 1.75; font-size: 14px;" yne-bulb-block="paragraph">反馈电阻集成</li>
<li style="white-space: pre-wrap; text-align: left; line-height: 1.75; font-size: 14px;" yne-bulb-block="paragraph">RTC计时部分不复位</li>
</ul>

<p style="white-space: pre-wrap; text-align: left; line-height: 1.75; font-size: 14px;">    2.RTC组成</p>

<p style="white-space: pre-wrap; text-align: left; line-height: 1.75; font-size: 14px;">3.工作原理</p>

<p style="white-space: pre-wrap; text-align: left; line-height: 1.75; font-size: 14px;">4.软件实现步骤</p>

<div style="white-space: pre-wrap; text-indent: 28px; text-align: left; line-height: 1.75; font-size: 14px;" yne-bulb-block="paragraph"><span style="background-color: rgb(255, 255, 255);">（1）RTC初始化：不复位，只需写入当前时间</span>；</div>

<div style="white-space: pre-wrap; text-indent: 28px; text-align: left; line-height: 1.75; font-size: 14px;" yne-bulb-block="paragraph"><span style="background-color: rgb(255, 255, 255);">（2）读取当前RTC时间参数，确保是否正确写入到RTC中；</span></div>

<div style="white-space: pre-wrap; text-indent: 28px; text-align: left; line-height: 1.75; font-size: 14px;" yne-bulb-block="paragraph"><span style="background-color: rgb(255, 255, 255);">（3）通过串口将RTC时钟信息打印到电脑串口助手上；</span></div>

<div style="white-space: pre-wrap; text-indent: 28px; text-align: left; line-height: 1.75; font-size: 14px;" yne-bulb-block="paragraph"> </div>

<ul>
<li style="white-space: pre-wrap; text-indent: 28px; text-align: left; line-height: 1.75; font-size: 14px;"><span style="background-color: rgb(255, 255, 255);">RTC初始化</span></li>
</ul>

<pre>
<code class="language-cpp">void MF_RTC_Init(void)
{

FL_RTC_InitTypeDef defaultInitStruct;

defaultInitStruct.year = 0x20;
defaultInitStruct.month = 0x10;
defaultInitStruct.day = 0x01;
defaultInitStruct.week = 0x03;
defaultInitStruct.hour = 0x00;
defaultInitStruct.minute = 0x00;
defaultInitStruct.second = 0x00;

//写入RTC初始时间
FL_RTC_Init(RTC,&defaultInitStruct );

}</code></pre>

<ul>
<li style="white-space: pre-wrap; text-indent: 28px; text-align: left; line-height: 1.75; font-size: 14px;"><span style="background-color: rgb(255, 255, 255);">设置RTC时间参数函数</span></li>
</ul>

<pre>
<code class="language-cpp">uint8_t RTC_SetRTC(FL_RTC_InitTypeDef* InitStructer)
{
uint8_t n, i;
uint8_t Result;
FL_RTC_InitTypeDef TempTime1;

for(n=0 ;n<3; n++)
{
FL_RTC_ConfigTime(RTC,InitStructer);
Result = RTC_GetRTC(&TempTime1); //读取确认设置结果
if(Result == 0)
{
Result = 1;
for(i=0; i<7; i++)//两者一致, 表示设置成功
{
if(((uint32_t*)(&TempTime1)) != ((uint32_t*)(InitStructer)))
break;
}
if(i == 7)
{
Result = 0;
break;
}
}
}
return Result;
}</code></pre>

<ul>
<li style="white-space: pre-wrap; text-align: left; line-height: 1.75; font-size: 14px;">读取RTC当前时间</li>
</ul>

<pre>
<code class="language-cpp">uint8_t RTC_GetRTC(FL_RTC_InitTypeDef* InitStructer)
{
uint8_t n, i;
uint8_t Result = 1;

FL_RTC_InitTypeDef TempTime1,TempTime2;

for(n=0 ;n<3; n++)
{
FL_RTC_GetTime(RTC,&TempTime1);//读一次时间
FL_RTC_GetTime(RTC,&TempTime2);//再读一次时间

for(i=0; i<7; i++)//两者一致, 表示读取成功
{
if(((uint32_t*)(&TempTime1)) != ((uint32_t*)(&TempTime2))) break;
}
if(i == 7)
{
Result = 0;
memcpy((uint32_t*)(InitStructer), (uint32_t*)(&TempTime1), 7*sizeof(uint32_t));//读取正确则更新新的时间
break;
}
}
return Result;
}</code></pre>

<ul>
<li style="white-space: pre-wrap; text-align: left; line-height: 1.75; font-size: 14px;">    将数据打印到串口助手上，查看数据变化</li>
</ul>

<pre>
<code class="language-cpp">RTC_GetRTC(&GetTime);

printf("RTC: 日期:20%x-%2x-%2x 星期:%x时间:%2x:%2x:%2x \r\n",GetTime.year,GetTime.month,GetTime.day,GetTime.week,GetTime.hour,GetTime.minute, GetTime.second);</code></pre>

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<p style="white-space: pre-wrap; text-align: left; line-height: 1.75; font-size: 14px;">串口助手显示RTC参数</p>

<p style="white-space: pre-wrap; text-align: left; line-height: 1.75; font-size: 14px;">开发板接线图</p>

<p style="white-space: pre-wrap; text-align: left; line-height: 1.75; font-size: 14px;"></p>

<p style="white-space: pre-wrap; text-align: left; line-height: 1.75; font-size: 14px;"> </p>

<ol>
</ol>

<p></p>

Jacktang 发表于 2021-2-28 08:09

<p>楼主测评加油</p>

<p>谢谢分享</p>

annysky2012 发表于 2021-2-28 09:03

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复旦微FM33LC046N评测+RTC时钟