Specifications

Built-in function setRadioRate():
The setRadioRate() function does not do anything on the STM32W108xB. The only radio rate
available is the default rate of 250 Kbps, compatible with other 2.4 GHz-based SNAP nodes.
Built-in function setSegments():
On the STM32W108xB, setSegments() has no effect.
Built-in function sleep():
There are three sleep() modes on the MC13224 module. Higher numbered sleep modes draw less
current, but have increasing limitations. Refer to the following table:
Sleep Mode Details
0
• Can be timed sleep
• Can also be woken by a pin transition (if enabled)
• Highest current usage of the three modes
1
• Cannot be timed sleep (pin wakeup only)
• The hardware sleep timer is maintained (even though it cannot be used
as a wakeup source)
2
• Cannot be timed sleep (pin wakeup only)
• The sleep timer is not maintained at all (counter value is lost)
• Lowest current usage of the three modes
Negative durations for sleep values are valid for the following three enumerations. The sleep durations
listed here represent the time the node spends sleeping, and do not include the node’s recovery time.
Ticks enumeration Sleep duration
-1 250 ms
-2 500 ms
-3 750 ms
Any other negative
value
Ignored
(no sleep at all)
Note that these tick values only apply in sleep mode 0, the other two modes do not support “timed”
sleep at all.
Page 196 of 202 SNAP Reference Manual Document Number 600-0007K