FAN_SPEED 30 -> 100. A soak is a thermal test of everything except the
cooling, so the cooling should not be one of the variables in it. At 30%
a long run can throttle partway through, and throttled results read like
a different fault entirely.
Folded into V1.0.11 rather than bumping the version: the tag has not
moved on and this is the same delivery.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014RetWKFZFG1ZHcitQAyhwM
margin_save discarded the result of every write, so a NACK printed
"Change Saved" exactly like a successful store. For the one permanent
operation in this tool that is the worst place to stay quiet. Each store
is now checked, named on failure, and reflected in the exit code.
STORE_USER_ALL also went out as 0x15 followed by a dummy 0x00 - an SMBus
write-byte where the command is a send-byte. The LTC2977 tolerated it,
but tolerance is not correctness. Now i2cset ... 0x15 c on the native
path and a no-data cb_pmbus_write on the FPGA path.
Two new subcommands:
margin_save all - all nine boards in settings/, then re-init
whichever board was loaded beforehand so a
following margin_status still reports the board
you were looking at. Does not stop on the first
failure; a half-saved set is harder to reason
about than a fully-attempted one.
margin_save blanton - this platform exposes the CB FPGA F3 I2C
channels as native Linux i2c buses (Ch6->13,
Ch7->14, Ch8->15, Ch9->16; CB stays on bus 4),
so all 18 LTC2977 can be stored with plain
i2cset: no margin_init, no FPGA channel setup,
no pcimem. 18 commands instead of 42.
The 18 raw commands were verified on the DUT 2026-08-27; the wrapper was
tested against stubbed hardware only. Release notes say so.
Board list is MARGIN_BLANTON_STORE at the top of margin.sh - comment out
what this DUT does not have rather than letting it talk to absent boards.
Missing bus and unresponsive chip are reported as distinct failures.
MARGIN_STORE_SETTLE (0.5s) sits between stores because nothing here polls
the part's busy bit, and blanton fires 18 in a row.
Script A -> V1.0.11.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014RetWKFZFG1ZHcitQAyhwM
etwenandClaude Opus 5