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Use PSRAM to reduce heap usage percentage on ESP32 with PSRAM (#8891)

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* Use PSRAM for malloc > 256bytes to get more heap memory

* Use dynamic allocator on boards with PSRAM to free more heap

* Apply suggestion from @Copilot

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Move heap_caps_malloc_extmem_enable() to the top of the init

* Update src/main.cpp

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Ben Meadors <benmmeadors@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
This commit is contained in:
Alex Samorukov
2025-12-10 13:23:23 +01:00
committed by GitHub
parent aa72e397f2
commit 5910cc2e26
2 changed files with 7 additions and 2 deletions
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5
src/main.cpp
View File

@@ -439,6 +439,11 @@ void setup()
LOG_INFO("\n\n//\\ E S H T /\\ S T / C\n");
#if defined(ARCH_ESP32) && defined(BOARD_HAS_PSRAM)
// use PSRAM for malloc calls > 256 bytes
heap_caps_malloc_extmem_enable(256);
#endif
#if defined(DEBUG_MUTE) && defined(DEBUG_PORT)
DEBUG_PORT.printf("\r\n\r\n//\\ E S H T /\\ S T / C\r\n");
DEBUG_PORT.printf("Version %s for %s from %s\r\n", optstr(APP_VERSION), optstr(APP_ENV), optstr(APP_REPO));

4
src/mesh/Router.cpp
View File

@@ -37,8 +37,8 @@
static MemoryDynamic<meshtastic_MeshPacket> dynamicPool;
Allocator<meshtastic_MeshPacket> &packetPool = dynamicPool;
#elif defined(ARCH_STM32WL)
// On STM32 there isn't enough heap left over for the rest of the firmware if we allocate this statically.
#elif defined(ARCH_STM32WL) || defined(BOARD_HAS_PSRAM)
// On STM32 and boards with PSRAM, there isn't enough heap left over for the rest of the firmware if we allocate this statically.
// For now, make it dynamic again.
#define MAX_PACKETS \
(MAX_RX_TOPHONE + MAX_RX_FROMRADIO + 2 * MAX_TX_QUEUE + \