PIONEERPOS G24-LC manual Sleep Mode AT Commands, Sleep Mode HW Signals

Modem Configuration and Profile

enables the G24-L sleep mode and signals its readiness for sleep. For this purpose, a set of AT commands and dedicated HW lines are defined.

Note: The Sleep mode feature is not relevant when using USB. In USB mode the G24-L is always awake. While USB is connected, do not use the following:

1.Sleep mode AT commands.

2.Sleep mode dedicated HW line (wake in/wake out).

Sleep Mode AT Commands

The following are the Sleep mode AT commands:

•ATS24: Activates/deactivates Sleep mode.

The G24-L receives a request to activate or deactivate Sleep mode.

•ATS102: Sets the value of the delay before sending data to the terminal.

The G24-L receives the value that defines the period to wait between sending the wake-up signal, and sending data to the terminal.

•ATS100: The minimum time that takes the Terminal to enter sleep mode. Only if this time period passes, the G24-L will wait ATS102 time between wake-up out line and data transmission.

•AT+MSCTS: The UART's CTS line control.

The G24-L receives a request to define the behavior of the CTS line when the G24-L is in Sleep mode. It enables or disables activation of the CTS line after wakeup.

Sleep Mode HW Signals

Two HW lines are used:

•One for waking the G24-L (Wakeup-In)

•One for waking the terminal (Wakeup-Out)

Terminal Does Not Wake the G24-L (If the Terminal Uses Hardware Flow Control Only)

When the G24-L is in Sleep mode, the CTS line is also inactive. The terminal does not send any characters to the G24-L if the CTS is inactive, otherwise the character may be lost (Hardware Flow Control).

Terminal Wakes the G24-L Using the Wakeup-In Line

The terminal uses the Wakeup-In line (pin #16) to wake up the G24-L when it wants to send data. When the Wakeup-In line is low, the G24-L will not enter the Sleep mode. If the terminal has data to send while the G24-L is sleeping, it activates the line (brings it to active low), then waits 10 ms (the time required to wake the G24-L). Only then can the terminal start sending data.

3-200 G24-L AT Commands Reference Manual April 15, 2008