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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/GpsScreen.h
+1 -1
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@@ -38,7 +38,7 @@ static const int SKY = 168;
static const int BAR_PITCH = 26, BAR_W = 16, BARS_H = 120, AXIS_W = 22;
// Snapshot the screen draws from, sorted: used first, then by signal.
static GpsSky::Sat s_sats[GpsSky::MAX_SATS];
static PSRAM_BSS GpsSky::Sat s_sats[GpsSky::MAX_SATS];
static bool s_used_flag[GpsSky::MAX_SATS];
static int s_n = 0;