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Eswin ECR6600 flashing guide, datasheet, pinout, 100% local setup, Home Assistant

p.kaczmarek2 4587 91
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  • #91 21594708
    DeDaMrAz
    Level 20  
    ECR6600 test

    SendGet http://example.com/ myFile.html


    Code: text Expand Select all Copy to clipboard
    Info:CMD: CMD_SendGET received with args http://example.com/ myFile.html
Info:HTTP_CLIENT:HTTPClient_Async_SendGet for http://example.com/, sizeof(httprequest_t) == 160!
Info:CMD:[WebApp Cmd 'SendGet http://example.com/ myFile.html' Result] OK
Info:HTTP_CLIENT:Parse url http://example.com/
Info:HTTP_CLIENT:host: 'example.com', port: 80
Info:HTTP_CLIENT:HAL_TCP_Establish: created socket 2

Error:HTTP_CLIENT:success to establish tcp, fd=2
Info:HTTP_CLIENT:httpclient_recv 255 bytes has been read
Info:HTTP_CLIENT:httpclient_recv 236 bytes has been read
Info:HTTP_CLIENT:httpclient_recv 255 bytes has been read
Info:HTTP_CLIENT:httpclient_recv 255 bytes has been read
Info:HTTP_CLIENT:httpclient_recv 255 bytes has been read
Info:HTTP_CLIENT:httpclient_recv 255 bytes has been read
Info:HTTP_CLIENT:httpclient_recv 7 bytes has been read
Info:MAIN:Time 225, idle 0/s, free 188384, MQTT 0(14), bWifi 1, secondsWithNoPing 158, socks 2/20 



    Screenshot of system logs showing an HTTP GET request sent to example.com.
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  • #92 21594735
    p.kaczmarek2
    Moderator Smart Home  
    I will try to clear this up, I also think that hal_machw_time could be moved to HAL:
    - by default, it would use:
    Code: C / C++
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    On ECR:
    Code: C / C++
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    On Beken, hal_machw_time

    To be honest, I am not even sure how big precision do we need for that timer for HTTP, maybe we could get away with using g_timeMs globally, without HAL call

    I'll try to make those changes today and try to test as far as I can, I'll ask you for a review later

    Added after 1 [minutes]:

    This whole HTTP Client looks more or less suspicious. This:
    Code: C / C++
    Log in, to see the code

    is used as it returns time offset, but in reality, it returns either 0 or 1
    Helpful post? Buy me a coffee.
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Topic summary

The discussion focuses on the Eswin ECR6600 WiFi+Bluetooth SoC module used in IoT devices, particularly smart plugs with integrated BL0937 energy metering chips. Key topics include detailed pinout configurations, firmware flashing procedures via UART, and local firmware development to enable cloud-free operation with Home Assistant using Tasmota/esphome-like firmware ports. Users report initial issues with the BL0937 driver not functioning due to its exclusion from firmware builds, which was later resolved by including the driver and verifying correct pin assignments. Attempts to extract and decrypt Tuya configuration keys from original firmware backups reveal challenges due to changed secondary keys and CRC errors, complicating full firmware analysis and key extraction. The community explores using Tuya Wind IDE on Linux for SDK access, and reverse engineering efforts with Ghidra face difficulties due to the ECR6600’s NDS32 architecture and base address uncertainties. Firmware disassembly and key extraction are ongoing, with partial success in identifying key material and decrypting some blocks. Additional tests confirm the ECR6600 supports WiFi 6 (2.4 GHz only) and HTTP GET/POST commands for local network control, including file downloads via HTTP client functionality. Integration efforts include porting missing HAL functions like hal_machw_time and lwip_close_force for timing and socket management. Various ECR6600-based devices, including plugs ordered from AliExpress (e.g., TNCE 16A power monitors and E103-W11 modules), are tested for firmware backup, flashing, and local control capabilities. The discussion also covers SDK build issues, firmware memory mapping, and the need for improved tooling and documentation to fully support ECR6600 development and integration with open-source platforms.
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