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fix(l2): WiFi fails to start or join - big statics and task stacks to PSRAM

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WiFi starts and joins on internal RAM: ~42 KB the first time, ~25 KB after,
more for WPA. Free internal RAM had shrunk to ~20 KB after opening the map
(the tile decoder's 12 KB stack, the 32 KB I-cache, the DMA draw buffers,
UI statics), so a scan failed at once (esp_wifi_init: no memory) and a join
during a tile download timed out (AUTH_EXPIRE).

- ESP-IDF: CONFIG_SPIRAM_ALLOW_BSS_SEG_EXTERNAL_MEMORY, and the esp_timer
  task stack 8 -> 4 KB (it uses ~0.4 KB). Rebuild the framework libs:
  pio run -e Wio_Tracker_L2_idf_libs.
- PSRAM_BSS (EXT_RAM_BSS_ATTR) on the UI's big statics: QR codes, map
  state, charts, lists. .dram0.bss 115 -> 66 KB.
- The tile decoder's and fetcher's task stacks in PSRAM.

Free internal RAM, idle: 48 -> 105 KB; WiFi up: 57 KB, 29 KB at the
lowest while downloading tiles.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Jakub
2026-10-14 17:23:29 +02:00
co-authored by Claude Opus 5.5
parent 3825dcc077
commit 2f2db6045c
17 changed files with 49 additions and 29 deletions
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examples/companion_radio/ui-lvgl/HomeScreen.h
+1 -1
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@@ -141,7 +141,7 @@ static lv_obj_t* s_caption = nullptr;
static const int MAX_PTS = LiveTrackStore::CAPACITY + 2;
enum : uint8_t { P_ME, P_LAST, P_TARGET, P_LIVE }; // how a point's dot looks
struct Pt { int32_t lat, lon; uint8_t kind; lv_obj_t* obj; };
static Pt s_pts[MAX_PTS]; // [0] you, then the target, then live shares
static PSRAM_BSS Pt s_pts[MAX_PTS]; // [0] you, then the target, then live shares
static int s_npts = 0;
static bool s_fitted = false; // homeMapFit() ran for this map
static int s_z = mapview::DEFAULT_Z;