I'm looking for modern control protocols, designs and/or components to simplify controlling (and running) a very low power system on a chip safely from mains power. I'm in the USA, and on a hobby budget. Consumer trends here are of interest, but so is the National Electric Code. Surely the world has come a long way since X10.
Has Bluetooth LE (BLE) made the older power-line communications standards old-hat? Are there ways of coupling BLE into the power-line that are considered good practices?
==Research Update==
I found the datasheet on the Cypress Semiconductor CY8CPLC10 I was referring to earlier (below). Cypress labels it a Integrated Power-line Modem PHY using 2400 bps FSK. That part number suggests its based on the PSOC-1 (8-bit) 5 generations behind their current 32-bit models. I don't think I care about the 8-bit part if I can treat it as a re-programmed modem.
However, the Digikey listing however has some sort of end-of-life notice link, dated July 2019. But that EOL notice seems to be for a CCS7331P-CAZR from Cirrus Logic. Seems like a different device, can anyone clarify what that means?
Also featured in the datasheet is: "Reference Designs Comply with CENELEC EN50065-1:2001 and FCC Part 15". I know what Part 15 is, but I'm not familiar with CENELEC. Seems to have something to do with the 131.5 KHz to 133.5 KHz band.
==What I've tried == (earlier)
A web power-supply-only web search like AC DC Isolated Power 3.3V uA turns up the sort of component I might use for PS alone. Some quite quite inexpensive while still claiming up to 3kV isolation. It even seems like there are some defacto standard pin-outs for these board mounted power supplies. E.g. ebay "1PC NEW AC DC Isolated Power Board Precision 12V300mA 3W 3.5W" at $1.99 quantity one.
But if I add the PLC part AC DC Isolated Power 3.3V uA with power line communications, the results disappoint me.
==Background==
The Cypress Semiconductor PSOC 5LP illustrates the class of SOC i'm looking to use as a building block. Its got a pretty wide DC input range, so I'm not even sure if I need a regulated supply.
I'm not tied the PSOC family, but I've found it to be very low-cost prototyping friendly. This sort of device has some impressive programmable analog and digital blocks that might make sense to leverage to keep chip count to a minimum. As I remember, Cypress had a PLC product line some years back, but it seems they are out-of-the-game. None of Cypress's current applications notes seem to make recommendations.