One potential shortcut is if you install their CubeMX and take a look in it's data files there are XML files for each distinct peripheral. So there'll be something like RTC_v1.0.xml and RTC_v2.0.xml. Someone uploaded an old copy of them [1] if you just want a quick look.
Then there's also device & device family xml files that link to the various peripherals they have [2].
There's probably no guarantees but in my experience if two devices link to the same version xml file their peripheral registers at least will be identical. Quirks and silicon bugs, you are on your own of course... but then the ref manual doesn't help with that either!
That one has extra circuitry to shut the esp down completely and wake it on either an external trigger or RTC based alarm. It claims 1.5uA sleep current.
In a previous job we had to make a plugin that could access win32 APIs for a bass ackwards set of companies who were determinedly sticking with IE6 or IE8. Their lockdown prevented the installation of proper desktop apps/services but allowed the installation of activeX (totally safe and secure, obviously).
All the devs vehemently objected to ActiveX but couldn't actually come up with any viable alternatives other than turning down the business...
If they had chrome or ff we could have probably gotten all we needed from the OS without directly using win32 (mostly desktop screenshot capture) or if they'd allowed us to ship them an msi to push to their machines we could have done a variety of other solutions... But alas, no.
So, I guess if your customers are in some insane semi-enterprise technology wasteland with impenetrable beurocracy and inscrutable "IT security" then yea, ActiveX might be a viable solution.
I quit after the plugin was repositioned to be our main offering above a semi-decent SAAS web service we offered. All aboard he ActiveX train! "The CEO can install ActiveX on his iPad right?"
Then there's also device & device family xml files that link to the various peripherals they have [2].
There's probably no guarantees but in my experience if two devices link to the same version xml file their peripheral registers at least will be identical. Quirks and silicon bugs, you are on your own of course... but then the ref manual doesn't help with that either!
[1] https://github.com/esden/stm32cube-database/tree/master/db/m...
[2] https://github.com/esden/stm32cube-database/tree/master/db/m...