gene heskett
2024-Jun-24 16:50 UTC
[Nut-upsuser] Any ideas what protocol GE VH3000 UPS might talk?
On 6/24/24 11:30, Jim Klimov via Nut-upsuser wrote:> Got a community question at > https://github.com/networkupstools/nut/issues/2466 > <https://github.com/networkupstools/nut/issues/2466> with at least two > users (and UPSes) in trouble. > > Curiously, they identify as |067b:2303 Prolific Technology| like a > common USB-Serial dongle brand. Experiments with blazer and nutdrv-qx > got no reasonable response from the devices. > > Jim >The cure Jim, is eliminate the prolific by replacing it with a FTDI dongle. Prolific has a bug in its wakeup, throwing away the first byte rx'd. I threw mine into the out bin 2 decades ago. Was trying to use it to talk to a cm11a for a heyu interface. Failed miserably. Encourage owners to toss it and get the FTDI-usb<->serial which Just Works.> > _______________________________________________ > Nut-upsuser mailing list > Nut-upsuser at alioth-lists.debian.net > https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/nut-upsuserCheers, Gene Heskett, CET. -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author, 1940) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis
Phil Stracchino
2024-Jun-24 17:50 UTC
[Nut-upsuser] Any ideas what protocol GE VH3000 UPS might talk?
On 6/24/24 12:50, gene heskett via Nut-upsuser wrote:> On 6/24/24 11:30, Jim Klimov via Nut-upsuser wrote: >> Curiously, they identify as |067b:2303 Prolific Technology| like a >> common USB-Serial dongle brand. Experiments with blazer and nutdrv-qx >> got no reasonable response from the devices. >> >> Jim >> > The cure Jim, is eliminate the prolific by replacing it with a FTDI > dongle. Prolific has a bug in its wakeup, throwing away the first byte > rx'd. I threw mine into the out bin 2 decades ago. Was trying to use it > to talk to a cm11a for a heyu interface. Failed miserably. Encourage > owners to toss it and get the FTDI-usb<->serial which Just Works.THAT would explain a LOT of past issues with trying to use a Microsoft DeLorme GPS receiver as a stratum-1 time source. Unfortunately since the Prolific chip was built into the device, replacing it with FTDI wasn't an option. (The worse problem, though, was that at the time, the Prolific driver in the Linux kernel had a bug in it which prevented it from ever being unloaded once loaded, which in turn made it impossible to cleanly reboot. I couldn't simply compile the driver inline because it didn't get initialized properly unless loaded as a module.) -- Phil Stracchino Fenian House Publishing phils at caerllewys.net phil at co.ordinate.org Landline: +1.603.293.8485 Mobile: +1.603.998.6958