WiFi not allocated from SPIRAM

[krajaan]

I'm experimenting with WROVER Kit and I'm trying to force all of WiFi memory usage into SPIRAM but so far I've had no success.
My code is as follows:

Code: Select all

    int spiram_available = heap_caps_get_free_size(MALLOC_CAP_SPIRAM);
    int internal_available = heap_caps_get_free_size(MALLOC_CAP_INTERNAL);
    tcpip_adapter_init();
    esp_event_loop_init(wifi_event_handler, NULL);
    wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
    esp_wifi_init(&cfg);
    esp_wifi_set_storage(WIFI_STORAGE_RAM);
    esp_wifi_set_mode(WIFI_MODE_STA);
    ESP_LOGE(tag, "SPIRAM used: %d", spiram_available - heap_caps_get_free_size(MALLOC_CAP_SPIRAM));
    ESP_LOGE(tag, "Internal used: %d", internal_available - heap_caps_get_free_size(MALLOC_CAP_INTERNAL));

And the output:

Code: Select all

E (571) wrover_main: SPIRAM used: 5260
E (581) wrover_main: Internal used: 55156

As you can see, 55kB of memory goes into internal RAM with only 5kB going into SPIRAM.
Here is my SPIRAM config:

Code: Select all

#
# SPI RAM config
#
CONFIG_SPIRAM_BOOT_INIT=y
CONFIG_SPIRAM_IGNORE_NOTFOUND=y
CONFIG_SPIRAM_USE_MEMMAP=
CONFIG_SPIRAM_USE_CAPS_ALLOC=
CONFIG_SPIRAM_USE_MALLOC=y
CONFIG_SPIRAM_TYPE_ESPPSRAM32=y
CONFIG_SPIRAM_SIZE=4194304
CONFIG_SPIRAM_SPEED_40M=y
CONFIG_SPIRAM_MEMTEST=y
CONFIG_SPIRAM_CACHE_WORKAROUND=y
CONFIG_SPIRAM_MALLOC_ALWAYSINTERNAL=0
CONFIG_WIFI_LWIP_ALLOCATION_FROM_SPIRAM_FIRST=y
CONFIG_SPIRAM_MALLOC_RESERVE_INTERNAL=32000
CONFIG_SPIRAM_ALLOW_STACK_EXTERNAL_MEMORY=
CONFIG_MEMMAP_TRACEMEM=
CONFIG_MEMMAP_TRACEMEM_TWOBANKS=
CONFIG_ESP32_TRAX=
CONFIG_TRACEMEM_RESERVE_DRAM=0x0
CONFIG_ESP32_ENABLE_COREDUMP_TO_FLASH=
CONFIG_ESP32_ENABLE_COREDUMP_TO_UART=
CONFIG_ESP32_ENABLE_COREDUMP_TO_NONE=y
CONFIG_ESP32_ENABLE_COREDUMP=
CONFIG_TWO_UNIVERSAL_MAC_ADDRESS=
CONFIG_FOUR_UNIVERSAL_MAC_ADDRESS=y
CONFIG_NUMBER_OF_UNIVERSAL_MAC_ADDRESS=4
CONFIG_SYSTEM_EVENT_QUEUE_SIZE=32
CONFIG_SYSTEM_EVENT_TASK_STACK_SIZE=2304
CONFIG_MAIN_TASK_STACK_SIZE=3584
CONFIG_IPC_TASK_STACK_SIZE=1024
CONFIG_TIMER_TASK_STACK_SIZE=3584
CONFIG_NEWLIB_STDOUT_LINE_ENDING_CRLF=y
CONFIG_NEWLIB_STDOUT_LINE_ENDING_LF=
CONFIG_NEWLIB_STDOUT_LINE_ENDING_CR=
CONFIG_NEWLIB_STDIN_LINE_ENDING_CRLF=
CONFIG_NEWLIB_STDIN_LINE_ENDING_LF=
CONFIG_NEWLIB_STDIN_LINE_ENDING_CR=y
CONFIG_NEWLIB_NANO_FORMAT=
CONFIG_CONSOLE_UART_DEFAULT=y
CONFIG_CONSOLE_UART_CUSTOM=
CONFIG_CONSOLE_UART_NONE=
CONFIG_CONSOLE_UART_NUM=0
CONFIG_CONSOLE_UART_BAUDRATE=115200
CONFIG_ULP_COPROC_ENABLED=
CONFIG_ULP_COPROC_RESERVE_MEM=0
CONFIG_ESP32_PANIC_PRINT_HALT=
CONFIG_ESP32_PANIC_PRINT_REBOOT=y
CONFIG_ESP32_PANIC_SILENT_REBOOT=
CONFIG_ESP32_PANIC_GDBSTUB=
CONFIG_ESP32_DEBUG_OCDAWARE=y
CONFIG_ESP32_DEBUG_STUBS_ENABLE=y
CONFIG_INT_WDT=y
CONFIG_INT_WDT_TIMEOUT_MS=300
CONFIG_INT_WDT_CHECK_CPU1=y
CONFIG_TASK_WDT=y
CONFIG_TASK_WDT_PANIC=
CONFIG_TASK_WDT_TIMEOUT_S=5
CONFIG_TASK_WDT_CHECK_IDLE_TASK_CPU0=y
CONFIG_TASK_WDT_CHECK_IDLE_TASK_CPU1=y
CONFIG_BROWNOUT_DET=y
CONFIG_BROWNOUT_DET_LVL_SEL_0=y
CONFIG_BROWNOUT_DET_LVL_SEL_1=
CONFIG_BROWNOUT_DET_LVL_SEL_2=
CONFIG_BROWNOUT_DET_LVL_SEL_3=
CONFIG_BROWNOUT_DET_LVL_SEL_4=
CONFIG_BROWNOUT_DET_LVL_SEL_5=
CONFIG_BROWNOUT_DET_LVL_SEL_6=
CONFIG_BROWNOUT_DET_LVL_SEL_7=
CONFIG_BROWNOUT_DET_LVL=0
CONFIG_ESP32_TIME_SYSCALL_USE_RTC_FRC1=y
CONFIG_ESP32_TIME_SYSCALL_USE_RTC=
CONFIG_ESP32_TIME_SYSCALL_USE_FRC1=
CONFIG_ESP32_TIME_SYSCALL_USE_NONE=
CONFIG_ESP32_RTC_CLOCK_SOURCE_INTERNAL_RC=y
CONFIG_ESP32_RTC_CLOCK_SOURCE_EXTERNAL_CRYSTAL=
CONFIG_ESP32_RTC_CLK_CAL_CYCLES=1024
CONFIG_ESP32_DEEP_SLEEP_WAKEUP_DELAY=2000
CONFIG_ESP32_XTAL_FREQ_40=y
CONFIG_ESP32_XTAL_FREQ_26=
CONFIG_ESP32_XTAL_FREQ_AUTO=
CONFIG_ESP32_XTAL_FREQ=40
CONFIG_DISABLE_BASIC_ROM_CONSOLE=
CONFIG_NO_BLOBS=
CONFIG_ESP_TIMER_PROFILING=
CONFIG_COMPATIBLE_PRE_V2_1_BOOTLOADERS=
CONFIG_ESP_ERR_TO_NAME_LOOKUP=y

I've also used the mbedtls_platform_set_calloc_free() function to force mbedtls to use default calloc and free functions, but it has no effect.

Advice?