Digi XBee DigiMesh 2.4, Руководство пользователя

Страница: 99 / 157

AT commands Sleep commands
XBee/XBee-PRO DigiMesh 2.4 RF Module User Guide 99
Parameter range
0x0 - 0xFFFF
For synchronous sleep devices, the following sleep bit field options are defined:
Bit Option
0 Preferred sleep coordinator; setting this bit causes a sleep compatible device to always act as
sleep coordinator
1 Non-sleep coordinator; setting this bit causes a device to never act as a sleep coordinator
2 Enable API sleep status messages
3 Disable early wake-up for missed syncs
4 Enable node type equality (disables seniority based on device type)
5 Disable lone coordinator sync repeat
For asynchronous sleep devices, the following sleep bit field options are defined:
Bit Option
8
Always wake for ST time
Default
0x2 (non-sleep coordinator)
SN (Number of Cycles Between ON_SLEEP )
Set or read the number of sleep periods value. This command controls the number of sleep periods
that must elapse between assertions of the ON_SLEEP line during the wake time of Asynchronous
Cyclic Sleep. This allows external circuitry to sleep longer than the
SP time.
During cycles when ON_SLEEP is de-asserted, the device wakes up and checks for any serial or RF
data. If it receives any such data, then it asserts the ON_SLEEP line and the device wakes up fully.
Otherwise, the device returns to sleep after checking.
This command does not work with synchronous sleep devices.
Parameter range
1 - 0xFFFF
Default
1
Example
Set to 1 to set ON_SLEEP high after each SP time (default).
If SN = 3, the ON_SLEEP line asserts only every third wakeup; SN = 9, every ninth wakeup; and so
forth.