Omnitronic TUNA-NET Internet Radio - M1088 Module - any information or software?

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  • DriversScrew
    Member
    • Dec 2021
    • 30
    • Germany
    #1

    Omnitronic TUNA-NET Internet Radio - M1088 Module - any information or software?

    I've got an Omnitronic TUNA-NET internet radio with an all in one module built around an esp32. The module must be a M1088 from ALD Ltd.
    The device shows only a white display screen pulsing every second. Seems to have some kind of boot issue. All voltages and the pcb thermal signatures look good.
    Any information about the M1088 module, schematics or firmware would be helpful.
    Attached Files
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    • DriversScrew
      Member
      • Dec 2021
      • 30
      • Germany
      #2
      Hooked up a FTDI interface to RJ11 connector and got some unreadable output every second. Looks like boot looping to me.
      Perhaps not easy to solve without a working firmware file...

        Comment

        • DriversScrew
          Member
          • Dec 2021
          • 30
          • Germany
          #3
          Originally posted by DriversScrew
          Hooked up a FTDI interface to RJ11 connector and got some unreadable output every second.
          Looping output when correct baud rate ist selected:
          Code:
          rst:0x10 (RTCWDT_RTC_RESET),boot:0x33 (SPI_FAST_FLASH_BOOT)
flash read err, 1000
ets_main.c 371

            Comment

            • madan1
              Badcaps Veteran
              • Nov 2016
              • 713
              • Bulgaria
              #4
              Do you have power on the winbond eeprom (pins 4 and 8)?


              p.s. according to the module brochure, it runs FreeRTOS, so you might want to check it out.
              Last edited by madan1; 10-06-2025, 05:28 PM.

                Comment

                • DriversScrew
                  Member
                  • Dec 2021
                  • 30
                  • Germany
                  #5
                  Power on eeprom pins is fine.
                  I tried to in-circuit read the eeprom content with a cheap CH431a reader but got no connection. Doesn't have to mean anything, because CH431 is known for its unreliable results with this eeprom.
                  Next step would be to unsolder the eeprom and test. But without a working software doesn't make much sense.

                  If I don't get it wrong the bare FreeRTOS image could work on the module but wouldn't bring me to a working tuner device?

                    Comment

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