From 716daafce3eaa5ebfd246c1ef9915a2972b4c6fd Mon Sep 17 00:00:00 2001 From: Your Name Date: Thu, 21 May 2026 06:20:45 +0530 Subject: fix: TLS allocation, stack overflow, DNS bind — mint now reachable MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Root cause: mbedtls SSL buffers (16KB) couldn't allocate from fragmented internal RAM (largest block 8KB). Fix by lowering SPIRAM_MALLOC_ALWAYSINTERNAL from 16KB to 4KB, allowing SSL buffers to go to PSRAM. Additional fixes: - DNS server binds to AP IP only (prevents self-hijacking) - start_services() moved from esp_timer (2KB stack) to dedicated FreeRTOS task (16KB stack) — was causing stack overflow with dynamic buffers - Mint health probe now logs errors and exposes last_err in API - Debug endpoint shows internal/PSRAM heap breakdown and DNS resolve test - Enabled CONFIG_MBEDTLS_DYNAMIC_BUFFER for better memory management - Board C config: mint_url → testnut-nutshell.mints.orangesync.tech --- sdkconfig.defaults | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'sdkconfig.defaults') diff --git a/sdkconfig.defaults b/sdkconfig.defaults index e2e1f4e..bed04fe 100644 --- a/sdkconfig.defaults +++ b/sdkconfig.defaults @@ -37,11 +37,15 @@ CONFIG_PARTITION_TABLE_FILENAME="partitions.csv" # mbedTLS (needed for HTTPS to mint) CONFIG_MBEDTLS_CERTIFICATE_BUNDLE=y +CONFIG_MBEDTLS_DYNAMIC_BUFFER=y +CONFIG_MBEDTLS_SSL_IN_CONTENT_LEN=4096 +CONFIG_MBEDTLS_SSL_OUT_CONTENT_LEN=4096 # PSRAM (ESP32-S3 has 8MB) CONFIG_SPIRAM=y CONFIG_SPIRAM_MODE_OCT=y CONFIG_SPIRAM_SPEED_80M=y CONFIG_SPIRAM_USE_MALLOC=y -CONFIG_SPIRAM_MALLOC_ALWAYSINTERNAL=16384 +CONFIG_SPIRAM_MALLOC_ALWAYSINTERNAL=4096 CONFIG_SPIRAM_MALLOC_RESERVE_INTERNAL=32768 +CONFIG_MBEDTLS_DYNAMIC_BUFFER=y -- cgit v1.2.3