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

p.kaczmarek2 4128 71
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  • #61 21491220
    divadiow
    Level 34  
    Hmm. Not sure what to suggest or do next tbh.
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  • #62 21492866
    divadiow
    Level 34  
    not that it helps, but I sought to find documented evidence of that address/range in relation to ECR6600. It seems perhaps chip_memmap.h in the SDK is a useful source

    ChatGPT said:

    Code: Text
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    https://github.com/divadiow/ECR6600/blob/main...s/Boards/ecr6600/common/include/chip_memmap.h

    sometimes get this though, but not with 0x40800000
    Error message in auto analysis

    https://github.com/search?q=repo%3Adivadiow%2FECR6600%2040800000&type=code

    Added after 1 [hours] 1 [minutes]:

    maybe we need to know the efuse content. need someone with a real device to flash the AT firmware and read the values from RDTool, assuming it allows read.
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  • #63 21501376
    divadiow
    Level 34  
    p.kaczmarek2 wrote:
    I can get this from LN882H:


    does TEY_SN_8710 get you anywhere in this app with ECR6600 fw?
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  • Helpful post
    #64 21501866
    divadiow
    Level 34  
    divadiow wrote:
    does TEY_SN_8710 get you anywhere in this app with ECR6600 fw?

    no, this does not seem to be it
    Screenshot of a C# code snippet dealing with Tuya configuration.

    it was something GPT suggested was derivable from @miegapele's efuse bytes https://www.elektroda.com/rtvforum/topic4106357.html#21500523

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    Added after 39 [minutes]:

    some basic observations re key/SDK consistency/variations across the dumps we have.

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    in summary, all the ECR6600 plugs have same key logged in boot output and are built with same SDK. Jasperro's LSC is the odd one out with a different key and older SDK.

    boot, dumps and get key summary package attached for all 4.

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  • #65 21505163
    p.kaczmarek2
    Moderator Smart Home  
    Nice research, I'll get back to it in a moment.
    @insmod what happened to ECR build? Did maintainer of ECR SDK submit code with syntax error?
    Code: text Expand Select all Copy to clipboard
    

../components/wpa/wpa_supplicant/ctrl_iface_freeRTOS.c: In function 'ctrl_iface_receive':
../components/wpa/wpa_supplicant/ctrl_iface_freeRTOS.c:100:27: error: 'CLI_PRINT_BUFFER_SIZE' undeclared (first use in this function); did you mean 'PRINT_BUFFER_SIZE'?
 #define PRINT_BUFFER_SIZE CLI_PRINT_BUFFER_SIZE//256
                           ^~~~~~~~~~~~~~~~~~~~~
../components/wpa/wpa_supplicant/ctrl_iface_freeRTOS.c:131:22: note: in expansion of macro 'PRINT_BUFFER_SIZE'
      if (reply_len > PRINT_BUFFER_SIZE ) {
                      ^~~~~~~~~~~~~~~~~
../components/wpa/wpa_supplicant/ctrl_iface_freeRTOS.c:100:27: note: each undeclared identifier is reported only once for each function it appears in
 #define PRINT_BUFFER_SIZE CLI_PRINT_BUFFER_SIZE//256
                           ^~~~~~~~~~~~~~~~~~~~~
../components/wpa/wpa_supplicant/ctrl_iface_freeRTOS.c:131:22: note: in expansion of macro 'PRINT_BUFFER_SIZE'
      if (reply_len > PRINT_BUFFER_SIZE ) {
                      ^~~~~~~~~~~~~~~~~
../components/wpa/wpa_supplicant/ctrl_iface_freeRTOS.c:133:15: error: unused variable 'atom' [-Werror=unused-variable]
          char atom[PRINT_BUFFER_SIZE+1];
               ^~~~

    I'll accept your fix... https://github.com/NonPIayerCharacter/OpenECR...d334ded1dab18dcd506d52398df83329bb00095939a83 thanks
    Helpful post? Buy me a coffee.
  • #66 21505185
    insmod
    Level 23  
    >>21505163
    Unknown what happened, it worked ok, but suddenly, without any changes in code, it started failing build.
    That only happened in github actions, building locally worked like before.
    I eventually determined that cli.h stopped including, so that hack will add it's path to include dirs.
    Though now that i checked the code, probably another cli.h was included, instead of the needed one.
    But why it worked before then?
  • #67 21505459
    divadiow
    Level 34  
    p.kaczmarek2 wrote:
    Nice research, I'll get back to it in a moment.

    no pressure. I notice IDA have mentioned NDS32 in their 2025 visions and goals https://hex-rays.com/blog/2025-product-vision-and-goals

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    but no sign of a release with that support, assuming I could even get hold of it somehow. My angle was that maybe that Ghidra processor add for NDS32 isn't as good as it could be, but I don't really know.
  • #69 21506177
    divadiow
    Level 34  
    nice. another ECR6600 to swoon over. Would be interesting to know what fw it has and how its RF compares to the WG236.
    I was going to hook up WG236 again this evening just to experience the efuse read in RDTool using AT.

    Added after 1 [hours] 7 [minutes]:

    yuh. no great surprise. all 0x0. read via TX0/IO6 and RX0/IO5

    Screenshot of RDTool showing efuse settings details and read logs for a device.

    UART prints

    Code: Text
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    Added after 4 [minutes]:

    this would be doable on the ECR6600 EU plugs because that's the same RX/TX as flash is through - but miegapele has already read it somehow. not sure how @miegapele's values translate to what would be displayed in RDTool though.
  • #71 21509287
    p.kaczmarek2
    Moderator Smart Home  
    Nice! Take a backup and we'll compare them.
    Helpful post? Buy me a coffee.
  • #72 21509304
    divadiow
    Level 34  
    in my haste I neglected to uncheck the WG236A backup under stub and flashed that already! 🤦🏼‍♂ I'll dump second, I'm betting it'll be the same as the others we've had though.

    Screenshot of a binary file management program with the download option checked.

    efuse read is successful but doesn't reveal anything different to trying on WG236 https://www.elektroda.com/rtvforum/topic4111822-60.html#21506177

    Firmware upgrade software interface with a settings table.

    Added after 2 [minutes]:

    seeing what else I can read from it. any requests?

    Firmware upgrade tool software interface with error logs.
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Topic summary

The discussion revolves around the Eswin ECR6600 WiFi module, focusing on flashing procedures, firmware issues, and integration with Home Assistant. Users share experiences with the BL0937 driver, troubleshooting pin configurations, and extracting Tuya configurations from the original firmware. Several users report issues with the BL0937 driver not functioning correctly, despite correct pin assignments and firmware updates. Solutions include checking pin configurations, using specific firmware versions, and discussing the extraction of keys from the firmware. The conversation also touches on the need for a complete Tuya SDK for the ECR6600 and the challenges faced in disassembling the firmware for further analysis. Successful calibration and operation of the BL0937 driver are eventually reported, along with the sharing of links to purchase ECR6600 modules.
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