Oak-D writes the calibration parameters to the flash

Tjjl

Hi, I have a problem. I want to write the intrinsics JSON file calibrated by OAK-D into the FLASH area using the following code, but it throws the error below：

from pathlib import Path

import depthai as dai

import argparse

calibJsonFile = str((Path(__file__).parent / Path('/home/t**/dd.json')).resolve().absolute())

calibBackUpFile = str((Path(__file__).parent / Path('/home/t***/xx.json')).resolve().absolute())

parser = argparse.ArgumentParser()

parser.add_argument('calibJsonFile', nargs='?', help="Path to calibration file in json", default=calibJsonFile)

args = parser.parse_args()

# Connect device

with dai.Device(dai.OpenVINO.VERSION_UNIVERSAL, dai.UsbSpeed.HIGH) as device:

deviceCalib = device.readCalibration()

deviceCalib.eepromToJsonFile(calibBackUpFile)

print("Calibration Data on the device is backed up at:")

print(calibBackUpFile)

calibData = dai.CalibrationHandler(args.calibJsonFile)

try:

device.flashCalibration2(calibData)

print('Successfully flashed calibration')

except Exception as ex:

print(f'Failed flashing calibration: {ex}')

Calibration Data on the device is backed up at:

/home/t***/xx.json

Failed flashing calibration: No PROTECTED permissions to override protected EEPROM fields

jakaskerl

Hi @Tjjl
Depthai won't allow you to change fields like board name and batch number... I suggest you manually set the extrinsics and intrinsics - inside the calibration handler like calibData.setCameraExtrinsics(), then only flash that handler. Make sure not to change any protected fields.

Thanks,
Jaka