Wakeup from deep sleep with various options to turn on / off the radio.
In ESP8266, there are four options and params:
deepsleepsetoption(0): Radio calibration after deep-sleep wake up depends on init data byte 108.
deepsleepsetoption(1): Radio calibration is done after deep-sleep wake up; this increases the current consumption.
deepsleepsetoption(2): No radio calibration after deep-sleep wake up; this reduces the current consumption.
deepsleepsetoption(4): Disable RF after deep-sleep wake up, just like modem sleep; this has the least current consumption; the device is not able to transmit or receive data after wake up.