drivers/cps-hid.c, NEWS.adoc: try to fix frequency scaling dynamically #2752
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networkupstools#2717] Signed-off-by: Jim Klimov <[email protected]>
jimklimov
added
CyberPower (CPS)
USB
impacts-release-2.8.0
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Closes: #2717
Some CPS devices report frequency off by a factor of 10 (also in the vendor's own
pwrstattool) as e.g.499.0. This PR should try to detect the scaling range and adjust the reading.EDUCATED GUESS: Probably the underlying problem is a yet another mis-use of USB HID report format, with an interim change to reporting in 0.1HZ units in some firmwares, but not updating the exponent in the report.