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GIRIER Wifi Plug with 20A power monitoring with LN882HKi- flashing OpenBekken

Mad_Maxs 99 0
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  • #1 21803898
    Mad_Maxs
    Level 12  
    Hello,
    has anyone happened to flash the board as shown in the pictures?

    Close-up of PCB with labels A1–A5, GND, and VCC, photographed on a textured surface. PCB module with LN882HK1 chip, signal pins labeled A0–A3, EN, and G.

    Girier socket with voltage measurement, freshly taken out of the parcel box straight from the far east.
    https://pl.aliexpress.com/item/1005008248987558.html

    According to my measurements it came out that the connection of the programmer is as follows:

    PCB module with TX, RX, and BOOT signal wires soldered to pads

    I have connected via putty under COM4 at speed 921000 and I get some messages from the device, i.e. it can be assumed that RX/TX are connected correctly.
    When the potential Boot (GPIOA9 according to the chip's schematic) is connected under GND, the default wifi does not show up and the putty is silent.

    Terminal logs in PuTTY showing repeated time not sync errors

    Yet when I close putty and want to download myself the firmware, I get an error:

    Command prompt showing LN882H_Flash_Dumper.py error: could not enter download mode

    I have run out of ideas :)
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