如何实现真正的低功耗？

我正在寻找一个小应用程序，每500ms唤醒uC来处理一些软件循环，然后返回主动暂停模式，RTC（启用报警和唤醒功能）和LCD运行LSE。固件工作正常，但测得的功耗太高（接近35uA）。

我已经检查过时钟只分布在RTC和LCD上，并且每个模块都关闭了。没有中断挂起，halt（）似乎正确执行。 GPIO配置有固定参考。

我看到的问题是RTC_ISR1-＆gt; RECALPF总是1，不明白为什么这个永远不会变为0，以及如何修改代码以使这个标志起作用。
我该如何进一步发现什么是当前的？



以下为原文






I'm looking to build a small application which wakes up the uC each 500ms to handle some software loops, and then go back in active halt mode with RTC (alARM and wake up function enabled) and LCD running with LSE. The firmware is working, but the measured power consumption is way too high (near 35uA).

I've checked that the clock is only distributed on RTC and LCD and that each module are off. There is no interrupt pending and the halt() seems to be correctly executed. The GPIO are configured with a fixed reference.

The problem I see is that RTC_ISR1->RECALPF is always 1, don't understand why this one never goes to 0, and how to modify the code so this flag works.
How should I go further to discover what is drawing current?