Page 15 of 42
Once this is set, navigate to the "Satellite pass prediction" page, ensure "NK" and "NN" are
ticked under "Satellite choice". This is because
NOT
these two satellites do not support the Argos 3 messages that we are using.
Now click "Download satellite AOP" and save the file to disk.
To convert this data to the configuration JSON format use the following line:
$ sudo artic_bulletin_to_json --file AOP_2019_08_19_10_53_06.txt
{"bulletin": [{"secondsSinceEpoch": 1566170997, "params": [7195.621, 98.569, 322.886, -25.341,
101.3601, 0.0], "satelliteCode": "MA"}, {"secondsSinceEpoch": 1566169463, "params": [7195.651,
98.6984, 336.302, -25.34, 101.3604, 0.0], "satelliteCode": "MB"}, {"secondsSinceEpoch": 1566167445,
"params": [7195.586, 98.7004, 345.036, -25.34, 101.3591, 0.0], "satelliteCode": "MC"},
{"secondsSinceEpoch": 1566170008, "params": [7226.502, 99.181, 268.188, -25.5, 102.0106, -1.98],
"satelliteCode": "19"}, {"secondsSinceEpoch": 1566167176, "params": [7160.249, 98.5406, 112.607,
-25.154, 100.6149, 0.0], "satelliteCode": "SR"}]}
5.14. Program the JSON configuration file
The system configuration file is described using JSON. Refer to the section
To apply the JSON configuration file to the tracker board, enter the following commands:
$ sudo tracker_config --write yourThingName.json --setdatetime "`date`"
This will additionally set the RTC date and time to the local time of your PC.
5.15. Create an empty log file
$ sudo tracker_config --erase_log --create_log LINEAR
Arribada Horizon ARTIC R2 Developer’s Kit | User Manual