Implementation of the APS014 - DW1000 Antenna Delay Calibration

[albertkasdorf]

Hi,

I am currently trying to calibrate the antenna delay of my DW1000 Controller Boards. But I have some trouble with the formula in "Figure 5: Evaluate the quality of the candidates - flowchart". Maybe I have done everything correct and you can integrate my changes or maybe someone can help me with that point.

DW1000.h/DW1000.cpp:

• I have inserted two static function so that you can set/get the antenna delay from the ino files.

Calibration_ANCHOR.ino:

• Note: My board uses another PIN_IRQ!
• The same like DW1000Ranging_ANCHOR.ino but with the call to setAntennaDelay.

Calibration_TAG.ino:

• Note: My board uses another PIN_IRQ!
• The same like DW1000Ranging_TAG.ino but with the call to setAntennaDelay and transfer of the relevant calibration data in json format to the host computer.

serial_to_json_to_csv.py:

• Runs on the host computer, catches the json data and write it to a csv file on the host computer.
• You have to run the script for each DW1000-based device, see also "Figure 2: TWR reference device generation setup".
• Change once the parameter SERIAL_PORT and GROUND_TRUTH.
• Change for each DW1000-based device the output file (CSV_FILE_NAME) in the script.
• Use a spreadsheet program to compute the average of several range estimates, you need these values in the next script. (Here is the spreadsheet file with my measurements: measurement_two_meter.xlsx)

antenna_delay_calibration.py:

• Implementation of the APS014 - DW1000 Antenna Delay Calibration
• Populate EDM_ACTUAL and EDM_MEASUREMENT, run it and you get the antenna delay values for each DW1000-based device.
• Note: I have no idea if the create_chip_delay function is correct, the "Figure 5: Evaluate the quality of the candidates - flowchart" is in this point not precise enough.

With friendly greetings from Germany.

[Anacron-sec]

I think there's one problem with the code, there's no default delay in case it is not explicitly set.