System.sleep and WKP Pin

[ScruffR]

@n8xja

if (millis() > AwakeUntil) {
AwakeUntil=millis() + NAP_TIME + AWAKE_MILLIS;
System.sleep(WKP,RISING,NAP_TIME);
}

@n8xja, I think you are mixing units here
You are using millis() in conjunction with System.sleep(), but the time to sleep is given in seconds not milliseconds

Additionally you might want to use SLEEP_NETWORK_STANDBY and have a look at the recent update notice about 0.6.0-rc.1

#BUGFIXES
[...]
System.sleep SLEEP_MODE_DEEP timing accuracy and sleep STOP mode retains user interrupt handler after resuming #1051 fixes #1043 and #1029