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24.Linux中RTC的驱动实验_csdn

news 2025/5/2 5:18:14

这个在裸机开发也有，如果有过裸机开发经验的同学就比较入手了！
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1、Linux 内核 RTC 驱动简介

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2、STM32MP1 内部 RTC 驱动分析

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像这里的读取时间，是在之前的代码里面已经写好了有关时间计数的代码，直接引用两个寄存器就行。
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3、RTC 时间查看与设置

3.1、使能内部 RTC

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3.2、查看时间

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这里我们改现在的：

date -s "2025-05-01 16:10:00"

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过段时间输入date看看时间变了没：
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试一下：
重启开发板：
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发现时间并没有丢失！
我们看看断电后会不会丢失：
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并没有丢失：说明正点原子的板子stm32mp157存在纽扣电池！