On Aug 13, 2008, at 10:14 AM, Jon Bougher wrote:
send_cmd(msg_len=2, type='B')
send_cmd: sending 3a 42 bd 0d 00 00 00 00 '.B......'
send_cmd: received 53 31 34 30 31 00 30 0d 'S1401.0.' (bad)
send_cmd: send_try = 3, recv_try = 10
Error reading B value: Device detached? (error 0: No error)
What if you increase MAX_SEND_TRIES? Under normal operation, this
should not slow things down, but increasing it to 5, 10 or 20 might
help if the UPS is busy and can't respond immediately.
I think remember where the "error 0" part came from. The USB-to-
serial converter always returns 8 bytes if it can, but those bytes
may be stale (see above - we sent the 'B' command, but got the
leftover 'S' status result).
Arjen had some suggestions about how to rework the reconnection
scheme, and based on the error above, it's not going to be simple.
--
Charles Lepple
[EMAIL PROTECTED]
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