Configuration Packets; Packet Timer Period Packet; Utc Synchronisation; Packet Timer Period - Advanced Navigation Spatial FOG Reference Manual

13.10

Configuration Packets

Configuration packets can be both read from and written to the device. On many of
the configuration packets the first byte is a permanent fag. A zero in this field
indicates that the settings will be lost on reset, a one indicates that they will be
permanent.
13.10.1

Packet Timer Period Packet

Packet ID
Length
Field Bytes
# Ofset
1 0
2 1
3 2
Table 96: Packet timer period packet
13.10.1.1

UTC Synchronisation

This is a boolean value that determines whether or not the packet timer is
synchronised with UTC time, with zero for disabled and one for enabled. For UTC
Synchronisation to be enabled the packet timer period must multiply into 1000000
evenly. For example if the packet timer period is 10000 (10 ms), 1000000/10000 =
100 which is valid for UTC synchronisation. If the packet timer period is 15000 (15 ms),
1000000/15000 = 66.6666 which is not valid for UTC synchronisation. To get the rate
use the following.
Packet Timer Rate = 1000000/(Packet Timer Period) Hz
13.10.1.2

Packet Timer Period

This is a value in microseconds that sets the master packet timer period. The
minimum value is 1000 (1 ms) or 1000 Hz and the maximum value is 65535 (65.535
ms) or 15.30 Hz.
Packet Timer Period Packet
Data Size
Type
u8 1
u8 1
u16 2
Spatial FOG Reference Manual
Description
Permanent
UTC synchronisation, see section 13.10.1.1
Packet timer period, see section 13.10.1.2
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