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fix(mem): lower LVGL hybrid PSRAM threshold 1024->256 (heap-starvation reboots) #39

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fix(mem): lower LVGL hybrid PSRAM threshold 1024->256 (heap-starvation reboots) #39

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8 changes: 6 additions & 2 deletions lib/lv_mem_hybrid.h
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Original file line number Diff line number Diff line change
Expand Up @@ -14,8 +14,12 @@
extern "C" {
#endif

/* Threshold: allocations larger than this go to PSRAM */
#define LV_MEM_HYBRID_PSRAM_THRESHOLD 1024
/* Threshold: allocations larger than this go to PSRAM.
* Lowered 1024->256 (2026-06-24): pushes most small LVGL objects (styles, obj
* metadata, labels, anim descriptors) into PSRAM, de-fragmenting the scarce
* ~57-66KB internal block so the LXST audio pipeline can allocate reliably
* during a call. UI alloc latency on PSRAM is imperceptible. */
#define LV_MEM_HYBRID_PSRAM_THRESHOLD 256

/* Track which allocations went to PSRAM vs internal RAM */
/* We use a simple heuristic: PSRAM addresses are above 0x3C000000 on ESP32-S3 */
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