Files
thermostat-hw/partitions.csv
mattandClaude d4b2ab7f99 Work through the remaining review items in TODO.md
Keep the HTTP session alive between weather polls (TODO #1). Re-creating the
client each time forced a fresh TLS handshake inside the window where the UI
is frozen. Measured on hardware: the fetch went from ~1.3s to ~80ms, so the
pause is no longer long enough to matter once thermostat controls exist. The
timeout drops from 30s to 10s once a session is warm, since only a cold
handshake needs the longer budget. Any transport error or non-200 tears the
session down so a half-open connection cannot poison every later poll.

The response buffer is now reset per request rather than on
HTTP_EVENT_ON_CONNECTED -- a kept-alive connection does not re-fire that
event, so the buffer would have accumulated across polls.

Indicate stale readings (TODO #2). After two consecutive failures the
temperature dims and the status line shows the age. Age comes from tick
counts, not weather_data_t.last_update: there is no SNTP client here, so
time(NULL) starts at the epoch and any age derived from it is meaningless.

Gate the touch readout behind UI_DEBUG_TOUCH, default off (TODO #3). Kept the
note about LVGL not bubbling events to parents -- it documents a real trap.

Delete main/utils (TODO #4); it had no callers outside itself. Also refreshed
project_structure.txt, which was additionally missing i2c_bus and backlight.

Lay out two 4MB OTA slots (TODO #5) while no devices are fielded, and document
in the README that an OTA download cannot run while the panel is scanning --
the flash write faults the bounce-buffer ISR.

Log the truncation warning once per response instead of once per chunk, and
record the weather task's stack high-water mark (TODO #6): ~2400 bytes spare
of 6144.

Co-Authored-By: Claude <noreply@anthropic.com>
2026-08-04 09:08:51 -07:00

1.2 KiB

1# Partition table for ESP32-S3-WROOM-1-N16R8 (16MB flash8MB octal PSRAM)
2#
3# Two 4MB OTA slots. The app is ~1.1MBso this is generous -- but the layout
4# is fixed once devices are in the fieldand re-partitioning later means
5# reflashing each one over USB. Laying the slots out now costs nothing.
6#
7# NOTE: writing an OTA image is a flash writeand the panel's bounce-buffer
8# refill ISR reads PSRAMwhich shares the cache with flash on the S3. An OTA
9# for the download+writeor reboot into a dedicated updater mode first. See
10#
11# The former 12MB SPIFFS partition was dropped -- nothing mounted it. ~7.9MB
12# is left unallocated for a filesystem or a third slot if either is ever
13# needed; adding a partition to free space is safemoving one is not.
14#
15# NameTypeSubTypeOffsetSizeFlags
16nvsdatanvs0x90000x6000
17otadatadataota0xf0000x2000
18phy_initdataphy0x110000x1000
19ota_0appota_00x200000x400000
20ota_1appota_10x4200000x400000