BCMXCP_USB(8)

NAME

bcmxcp_usb - Experimental driver for UPSes supporting the BCM/XCP protocol over USB

NOTE ABOUT HISTORIC NUT RELEASE

Note	Two NUT websites This version of the page reflects NUT release v2.8.0 with codebase commited ff16dabca at 2022-04-04T11:04:28+00:00 Options, features and capabilities in current development (and future releases) are detailed on the main site and may differ from ones described here.

NOTE

This man page only documents the hardware-specific features of the bcmxcp_usb driver. For information about the core driver, see nutupsdrv(8). This driver is a variant of the serial driver bcmxcp and uses the same core code.

SUPPORTED HARDWARE

This driver should recognize all BCM/XCP-compatible UPSes that are connected via USB. It has been developed and tested on Powerware PW3501 hardware. It also has been tested on PW5110 hardware.

EXTRA ARGUMENTS

This driver supports the following optional settings in the ups.conf(5).

shutdown_delay=delay: The number of seconds that the UPS should wait between receiving the shutdown command and actually shutting off.

DEFAULT VALUES FOR THE EXTRA ARGUMENTS

shutdown_delay =120

INSTANT COMMANDS

This driver supports the following Instant Commands:

shutdown.return: Turn off the load and return when power is back.
shutdown.stayoff: Turn off the load and remain off.
test.battery.start: Start a battery test.

TODO LIST

Report UPS alarm status: BCM/XCP supports reporting a wide range of UPS alarm conditions.
Report UPS statistics information: BCM/XCP supports reporting of UPS statistics data.

EXPERIMENTAL DRIVER

This driver has been tagged experimental, even if it has been reported to be stable. Thus it is not suitable for production systems and it is not built by default. This is mainly due to the fact that it is a new driver.

INSTALLATION

This driver is not built by default. You can build it by using "configure --with-usb=yes". Note that it will also install other USB drivers.

You also need to install manually the hotplug files (libhidups and libhid.usermap), generally in etc/hotplug/usb/, to address the permission settings problem. Lastly note that the libhidups file must have execution flag set (ie using chmod +x …).

IMPLEMENTATION

bcmxcp_usb only supports 1 UPS at this time. You can put the "auto" value for port in ups.conf, i.e.:

[pw3105]
        driver = bcmxcp_usb
        port = auto

KNOWN ISSUES AND BUGS

"Got EPERM: Operation not permitted upon driver startup"

You have forgotten to install the hotplug files, as explained in the INSTALLATION section above. Don’t forget to restart hotplug so that it applies these changes.

AUTHORS

Tore Ørpetveit <tore@orpetveit.net>
Wolfgang Ocker <weo@weo1.de>