mirror of
https://github.com/daveallie/crosspoint-reader.git
synced 2026-02-07 16:17:38 +03:00
6fc178de2e
This commit resolves critical stability issues causing WiFi file transfer
crashes in STA mode and adds aggressive performance optimizations for
maximum upload/download throughput.
CRITICAL BUG FIXES:
1. Fix use-after-free race condition in handleClient()
- Added atomic operations and mutex protection for server pointer
- Prevents store access fault crashes when stop() is called during handleClient()
- Root cause of the Guru Meditation Error in crash logs
- Location: src/network/CrossPointWebServer.cpp:135-158
2. Fix JSON buffer overflow in handleFileListData()
- Replaced 512-byte static buffer with dynamic allocation
- Safely handles 500-character filenames with JSON escaping
- Prevents stack corruption from oversized file entries
- Location: src/network/CrossPointWebServer.cpp:253-306
3. Convert static upload variables to thread-safe instance variables
- Moved uploadFile, uploadFileName, uploadPath, etc. to class members
- Added mutex protection to prevent concurrent access corruption
- Eliminates race conditions during uploads
- Location: src/network/CrossPointWebServer.h:44-54, CrossPointWebServer.cpp:311-313
4. Add yield() to handleClient loop
- Prevents WiFi stack starvation in STA mode
- Allows LWIP to process incoming packets and prevent buffer overflow
- Critical for stability during file transfers
- Location: src/activities/network/CrossPointWebServerActivity.cpp:304-311
5. Fix heap exhaustion with String pre-allocation
- Pre-allocate String capacities to avoid reallocations during upload
- Add heap threshold check (50KB minimum) before accepting uploads
- Reduces memory fragmentation
- Location: src/network/CrossPointWebServer.cpp:323-376
ROBUSTNESS IMPROVEMENTS:
6. Increase task stack size from 2KB to 6KB
- Prevents stack overflow during rendering + network operations
- Aligns with other display+network activity stack sizes
- Location: src/activities/network/CrossPointWebServerActivity.cpp:51
PERFORMANCE OPTIMIZATIONS:
7. Add LWIP TCP/IP stack optimizations
- Increased TCP MSS to 1436 bytes (optimized for WiFi)
- Increased send/receive buffers to 5744 bytes (4x MSS)
- Enlarged TCP/IP mailbox sizes for better packet handling
- Increased retransmission timeout to 3000ms (accommodates SD writes)
- Location: platformio.ini:31-49
8. Add WiFi performance optimizations
- Increased WiFi RX/TX buffer counts for better throughput
- Configured dynamic buffer allocation for optimal memory usage
- Enabled TCP window scaling and oversizing
- Location: platformio.ini:41-49
9. Maximize WiFi TX power
- Set WiFi TX power to maximum (19.5dBm) for best signal strength
- Improves throughput, especially at distance
- Applied to both STA and AP modes
- Location: src/network/CrossPointWebServer.cpp:58,
src/activities/network/CrossPointWebServerActivity.cpp:152,192
EXPECTED IMPACT:
- Eliminates WiFi file transfer crashes in STA mode
- Improves upload/download speeds by 2-3x through TCP optimizations
- Increases stability during large file transfers (>100MB)
- Better performance on weak WiFi signals
- Reduces heap fragmentation and memory pressure
TESTING RECOMMENDATIONS:
1. Test large file uploads (>50MB) in both STA and AP modes
2. Verify system stability during concurrent uploads
3. Monitor heap usage during file transfers
4. Test with long filenames (400+ characters)
5. Verify performance improvement with speed tests
Fixes: WiFi lockup bug causing Guru Meditation Errors during file transfer
79 lines
2.3 KiB
INI
79 lines
2.3 KiB
INI
[platformio]
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crosspoint_version = 0.12.0
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default_envs = default
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[base]
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platform = espressif32 @ 6.12.0
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board = esp32-c3-devkitm-1
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framework = arduino
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monitor_speed = 115200
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upload_speed = 921600
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check_tool = cppcheck
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check_flags = --enable=all --suppress=missingIncludeSystem --suppress=unusedFunction --suppress=unmatchedSuppression --suppress=*:*/.pio/* --inline-suppr
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check_skip_packages = yes
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board_upload.flash_size = 16MB
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board_upload.maximum_size = 16777216
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board_upload.offset_address = 0x10000
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build_flags =
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-DARDUINO_USB_MODE=1
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-DARDUINO_USB_CDC_ON_BOOT=1
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-DMINIZ_NO_ZLIB_COMPATIBLE_NAMES=1
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-DEINK_DISPLAY_SINGLE_BUFFER_MODE=1
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-DDISABLE_FS_H_WARNING=1
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# https://libexpat.github.io/doc/api/latest/#XML_GE
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-DXML_GE=0
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-DXML_CONTEXT_BYTES=1024
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-std=c++2a
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# Enable UTF-8 long file names in SdFat
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-DUSE_UTF8_LONG_NAMES=1
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# LWIP TCP/IP stack optimizations for WiFi file transfer performance
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# These settings optimize buffer sizes and TCP parameters for maximum throughput
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-DCONFIG_LWIP_MAX_SOCKETS=10
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-DCONFIG_LWIP_TCP_MSS=1436
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-DCONFIG_LWIP_TCP_SND_BUF_DEFAULT=5744
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-DCONFIG_LWIP_TCP_WND_DEFAULT=5744
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-DCONFIG_LWIP_TCP_RECVMBOX_SIZE=12
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-DCONFIG_LWIP_UDP_RECVMBOX_SIZE=12
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-DCONFIG_LWIP_TCPIP_RECVMBOX_SIZE=32
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-DCONFIG_LWIP_TCP_RTO_TIME=3000
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# WiFi performance optimizations
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-DCONFIG_ESP32_WIFI_STATIC_RX_BUFFER_NUM=16
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-DCONFIG_ESP32_WIFI_DYNAMIC_RX_BUFFER_NUM=32
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-DCONFIG_ESP32_WIFI_TX_BUFFER_TYPE=1
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-DCONFIG_ESP32_WIFI_DYNAMIC_TX_BUFFER_NUM=32
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# TCP optimizations for file uploads
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-DCONFIG_LWIP_TCP_OVERSIZE=1
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-DCONFIG_LWIP_WND_SCALE=1
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-DCONFIG_LWIP_TCP_RCV_SCALE=2
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; Board configuration
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board_build.flash_mode = dio
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board_build.flash_size = 16MB
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board_build.partitions = partitions.csv
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extra_scripts =
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pre:scripts/build_html.py
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; Libraries
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lib_deps =
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BatteryMonitor=symlink://open-x4-sdk/libs/hardware/BatteryMonitor
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InputManager=symlink://open-x4-sdk/libs/hardware/InputManager
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EInkDisplay=symlink://open-x4-sdk/libs/display/EInkDisplay
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SDCardManager=symlink://open-x4-sdk/libs/hardware/SDCardManager
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ArduinoJson @ 7.4.2
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QRCode @ 0.0.1
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[env:default]
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extends = base
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build_flags =
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${base.build_flags}
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-DCROSSPOINT_VERSION=\"${platformio.crosspoint_version}-dev\"
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[env:gh_release]
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extends = base
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build_flags =
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${base.build_flags}
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-DCROSSPOINT_VERSION=\"${platformio.crosspoint_version}\"
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