Timestamps as Double and printing Milliseconds

[AarjavJain101]

• Changed interpretation of the timestamp field from a 64 bit integer to a 64 bit precision double representing time in seconds since epoch time. (Appropriate firmware changes were made and a full radio test was done with IMU data). See note on IMU parse fails below
• Using the datetime library I printed the timestamps with millisecond precision now.
• Changed randomizer to create 64 bit precision double timestamps.

Example of a PARSE FAIL and millisecond precision timestamp

Note:

• Some PARSE_FAILS occurred when running the system. I created a log of all the messages that were sent and noticed that sometimes the IMU message would be sent in pieces (the longer messages are the expected and 'correct' IMU messages):

41cc366dfd9a9fbe4041593c0000000d0a
41cc366dfd9a9fbe4047583fd30dae0d0a
850d0a
41cc366dfe270a
41cc366dfe270a
41cc366dfe270a
41cc366dfe270a
41cc366dfeb374bc4041583be800000d0a
41cc366dfeb374bc40415a3f7cb0000d0a

The example I chose is on the more severe end of things. I would estimate a 20% failure rate which is quite high and thus we are losing data.

[ishanjoshi23]

Looks good