I’m working on measuring the power consumption of the HiFive Unleashed board. I’d planned on using a custom circuit, but then I noticed that there’s a header on the HiFive Unleashed board labeled “J14” and “POWER MEASUREMENT”, directly under the GPIO header. However, I’ve searched through the schematics and documentation, and I haven’t found anything discussing the header’s use.
Is this a documented feature? If so, did I miss something? And if not, is there any guidance on how to use the header to measure power?