I tried to use the UART feature on OAK-D today, and coolTerm keeps receiving same messages as below.
Is these log normal messages?
If not, how should I fix it?

rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
flash read err, 1000
ets_main.c 371

Hello @adison, just curious, how did you connect UART? Do you have the OAK-D-WIFI, or where was this error copied from? It looks like it was copied from esp-idf cmd.
Thanks, Erik

    erik
    Thanks for your reminder, the device I use is OAK-D-WIFI.
    I connected it through the micro-USB port on it.
    This error is copied from coolterm, an UART application.
    It appears repeatedly just after I connect it.

    • erik replied to this.

        Hello adison,
        I apologize for the inconvenience, but I'm not entirely sure what this could be. Looks like the device is in reset loop. I have seen the reset loop when flashing an incorrect esp32 firmware which was crashing the device on boot. What pipeline are you running on the MX? Is it flashed (standalone mode) or are you connected with the usb-c cable? What did you flash to the esp32?
        Thanks, Erik

            erik
            Hi Erik
            Thanks for information, I am newbie to ESP and just noticed the documents.
            I have not flash esp32 firmware yet, I am struggling on it now.
            Thanks for your kindly reply.

              2 years later

              Hi there,

              I'm also having the same error on my project. I'm not sure how to solve this problem. What can I do to solve this issue?

                Hi Anthony

                Error Explanation:

                • rst:0x10 (RTCWDT_RTC_RESET): The reset reason was the hardware watchdog timer in the RTC module.
                • boot:0x13 (SPI_FAST_FLASH_BOOT): It tried to boot using the SPI in fast flash mode.
                • flash read err, 1000: It encountered a flash read error.

                These errors suggest potential problems such as:

                1. Faulty Flash: The ESP cannot read its flash memory.
                2. Power Issues: Power instability during startup.
                3. Incorrect Flash Settings: Possibly due to incorrect firmware upload settings.

                Troubleshooting Steps:

                1. Check Power Supply:
                  Ensure the ESP receives a stable 3.3V supply. If powered from a USB-to-serial adapter or another board, consider an external 3.3V source.

                2. Reflash the Firmware:

                  • Use correct settings (board, flash size, etc.) in your IDE or flashing tool.
                  • Re-upload firmware or a basic sketch like Blink for testing.

                3. Inspect Hardware:

                  • Check for visible damage or soldering issues on the ESP board.
                  • If available, test the firmware on another ESP device.

                Thanks,
                Jaka