2026-10-01 09:23:50 +02:00
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# ESP-IDF options for the L2's LVGL firmware, over the Arduino framework's own
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# (custom_sdkconfig in solo/wio-tracker-l2/platformio.ini; changing this file
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# means rebuilding the framework libs: pio run -e Wio_Tracker_L2_idf_libs).
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# The reason for all this: a 32 KB instruction cache (the framework ships
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# 16 KB) and 64-byte data cache lines. LVGL runs from flash and draws into
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# PSRAM; frames draw ~35% faster. Costs 16 KB internal RAM.
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CONFIG_ESP32S3_INSTRUCTION_CACHE_32KB=y
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CONFIG_ESP32S3_DATA_CACHE_LINE_64B=y
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# ...won back, and more: TLS (map downloads, live tiles, OTA) and the BLE
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# host keep their buffers in PSRAM.
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CONFIG_MBEDTLS_EXTERNAL_MEM_ALLOC=y
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CONFIG_BT_NIMBLE_MEM_ALLOC_MODE_EXTERNAL=y
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# What the framework's own build sets for octal-PSRAM boards, which a rebuild
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# from its generic config would lose: PSRAM up before global constructors
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# (MESH_IN_PSRAM needs it), WiFi TX buffers allocated as needed.
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CONFIG_SPIRAM_BOOT_HW_INIT=y
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CONFIG_SPIRAM_BOOT_INIT=y
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CONFIG_SPIRAM_IGNORE_NOTFOUND=y
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CONFIG_SPIRAM_PRE_CONFIGURE_MEMORY_PROTECTION=y
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# CONFIG_SPIRAM_MEMTEST is not set
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CONFIG_ESP_WIFI_DYNAMIC_TX_BUFFER=y
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CONFIG_ESP_WIFI_DYNAMIC_TX_BUFFER_NUM=32
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CONFIG_ESP_WIFI_RX_BA_WIN=6
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CONFIG_LWIP_TCP_OOSEQ_MAX_PBUFS=4
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2026-10-14 17:23:29 +02:00
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# Internal RAM is what WiFi starts and joins on (~25 KB, more for WPA): big
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# zero-initialised statics marked EXT_RAM_BSS_ATTR (QR codes, map state,
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# charts...) go to PSRAM instead.
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CONFIG_SPIRAM_ALLOW_BSS_SEG_EXTERNAL_MEMORY=y
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# Its callbacks are short (~0.4 KB of stack used): half the framework's 8 KB.
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CONFIG_ESP_TIMER_TASK_STACK_SIZE=4096
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