WP7504 suspends to RAM when USB removed

IoT Modules WP Series
2

Hi bseng,

The mentioned behavior is expected.
If you like system always running regardless the external interface, you may set wake lock using Legato API or user-space.

For example, set lock on user-space:

echo testlock > /sys/power/wake_lock

To release the lock:

echo testlock > /sys/power/wake_unlock

Please refer to online doc for more info.
http://legato.io/legato-docs/latest/howToPowerMgmt.html

Hope it helps.