How to read the pixhawk serial number(unique ID using QGC)

kapil_kumar · October 15, 2020, 1:41am

Hello all, I need to read the pixhawk number (Unique ID) on every connection. Can anyone suggest me a way out

kapil_kumar · October 23, 2020, 10:47am

Hello community !!! It has been 8 days but I got no reply. Anyone who knows how to read the pixhawk ID in QGC please help…

kapil_kumar · October 23, 2020, 10:48am

@DonLakeFlyer Please help…

kapil_kumar · October 28, 2020, 12:52pm

I looked into the code and found sysID, componentID, and vehicleID but none of them represent the Flight Controller Number (Pixhawk Unique ID). Any Suggestions ??
Moreover when I see the firmware of pixhawk I see a function returning Pixhawk ID.
Can anyone suggest me how to read pixhawk ID using QGroundControl.
@DonLakeFlyer please help

github.com

ArduPilot/ardupilot/blob/master/libraries/AP_HAL_ChibiOS/Util.cpp#L265


    hal.flash->keep_unlocked(false);
    Debug("Flash failed after %u attempts\n", max_attempts);
    AP_ROMFS::free(fw);
    return FlashBootloader::FAIL;
}
#endif // !HAL_NO_FLASH_SUPPORT && !HAL_NO_ROMFS_SUPPORT

/*
  display system identifer - board type and serial number
 */
bool Util::get_system_id(char buf[40])
{
    uint8_t serialid[12];
    char board_name[14];

    memcpy(serialid, (const void *)UDID_START, 12);
    strncpy(board_name, CHIBIOS_SHORT_BOARD_NAME, 13);
    board_name[13] = 0;

    // this format is chosen to match the format used by HAL_PX4
    snprintf(buf, 40, "%s %02X%02X%02X%02X %02X%02X%02X%02X %02X%02X%02X%02X",

Emulai · October 30, 2020, 3:52am

This link could be useful for you bud

Emulai · November 4, 2020, 4:01am

@kapil_kumar to give you a bit more info, I’ve just pulled the Pixhawk ID from my vehicle. I’ve been writing a plugin for QGC, and when overriding the FirmwarePlugin architecture, there is a function adjustIncomingMavlinkMessage. This function is essentially called for every message coming from the vehicle.

By keeping an eye out for the message’s ID equalling the StatusText ID:
if (message.msgid == MAVLINK_MSG_ID_STATUSTEXT)
and then decoding that:

mavlink_statustext_t statusText;
mavlink_msg_statustext_decode(message, &statusText);

You can access the message. Then you just need to set up a conditional to find the correct StatusText message. The link uses C# but all you need to do is determine if
statusText.text contains the text PX4v2 - the rest of the text is the Pixhawk serial number.

At least, I’m fairly sure

kapil_kumar · November 4, 2020, 4:23am

Thanks @Emulai thank you so much. Even I was concluding the same that status text might contain the pixhawk number. I will check and try to return the pixhawk number on the console and will get back to you if needed.

kapil_kumar · November 5, 2020, 7:21pm

Hello @Emulai, I tried to print Pixhawk ID, but it is just showing me status text. Below attached is the picture of what I have done. Can you please tell me what I missed ?

Emulai · November 6, 2020, 12:39am

Hi @kapil_kumar, near as I can tell you are accessing this the correct way. The fact that you are getting status text output of any kind is proof of that.

I would guess that the reason you aren’t getting the Pixhawk serial number is because of the failed pre-flight checks - perhaps the system as a whole isn’t progressing far enough to actually query for the Pixhawk information. Beyond that, I couldn’t say for sure

desmond13 · September 8, 2022, 2:17pm

Anyone has any update about how to get the serial number of the Pixhawk through QGC?

desmond13 · December 2, 2022, 3:54pm

I forgot to mention that I got the UUID by looking at the flight logs in px4 flight log. At the beginning you get some general information (firmware version, airframe type) and you can see also the UUID. I hope this will help someone else.