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Radup wrote: ↑2024-04-07 14:42 Thanks for looking into it. So in order to reduce this power to almost 0, one would need to know how to command the MCU on the chip, right?

The current information available indicates that the RV1106 MCU is used for boot management, but Rockchip does not plan to release documentation on this part, so it cannot be determined whether using the MCU can reduce standby power consumption close to zero.
In the <Luckfox-pico SDK>/sysdrv/source/uboot/u-boot/arch/arm/mach-rockchip/rv1106/rv1106.c file, there are references to the startup and reboot processes involving the MCU. However, there are still significant obstacles to utilizing it effectively. At present, the most reliable approach appears to be utilizing an external MCU, despite the associated cost increase, as it would significantly reduce the complexity involved.

几天前的更新中，看到新的kernel中增加了1106休眠相关的内容，并且还增加了mcu的rt thread工程。
目前看来可以通过gpio0 bank和timeout来唤醒。
当前我的pico板子与外界一个mcu通过串口进行通信，我希望实现低功耗的需求，由于gpio0没法链接到我另一个mcu，所以我只能使用timeout来定时中断唤醒并查询，如果查询到串口引脚的信号，则唤醒启动。
我想询问的是这个需求有些有关帮助的文档或者方法能够提供吗。我不太清楚1106中的mcu和mpu之前唤醒休眠是怎样的流程，能实现mpu保持休眠，mcu定时唤醒查询，查询到了再唤醒mpu吗？
谢谢