Topics created by easytarget

Hello @easytarget

FYI: I ran a test and after charging the RTC battery / supercap for a couple of minutes, setting a start time, then removing all other power sources and checking after about 7 hours later, the time in the RTC was still correct.

Thanks
Felix

@felmue
Thank you! you are quite right! I hadn't really looked at what was happening properly :-(

The pin needs to be toggled high then low with a ~50ms delay for a full power off, just toggling it high does a full reset (after 1 second). I really wish there was a state diagram (or similar) available for the code in the PMS150G power control MCU.

I've extended my code to do the required pulse similar to your modification, and added a reset_device() method too. Plus relevant notes in the README etc, and done a new release.

[testing shows that the poweroff happens immediately after the first pulse, I'm not sure why they attempt to pulse several times but I guess they are just making sure.. ;-)]

@felmue Thank you for doing the test :-)

I guess this simplifies things for anybody writing a driver; but does prevent people having fun-and-games with under/over clocking the camera module.

I think it also means you cannot 'stop' the camera, which may be problem for extreme power saving. But I suspect the reset pin can be used to halt the module too.