SL8082T with AT+W32K=1,0

[yongyew]

Hi,

I using firmware version 7.52.0.201403201133 on sl8082t module with sierra wireless development kit. like to clarify as shown below:

1. send AT+W32K=1,0 on serial port COM 1
2. after issue the command it have no more response. (behavior is working fine)
3. plug in to SL8082T usb port to my PC
4. now i send “AT” command n it resume back. ( why ?)
5. i send command “AT” command to COM1 it resume back too ( why ?)

It should not able to response via USB port as mention in “At command interface guide”. am i correct?

From the AT_Command_Interface_guide.pdf

3.1.1.2.1. SLEEP Mode with GSM Stack in Idle
This mode is a low power consumption mode. In this mode the embedded module has restricted
access to peripheral interfaces, thereby UARTs, USB, SPIs, I2C, GPIOs, ADCs and Buzzer are not
available.
To enable or disable this mode use AT+W32K command.

thank you,
yongyew

[sushil]

Read the notes under +W32K in the AT Manual…

When enabled with “the DTR signal ignored” the embedded module exits slow idle mode on keypress from the DTE side and re-enters slowidle mode after all Open AT treatments.

When enabled with “the DTR signal ignored”, DTR signal is not taken into account to enter or leave the SLEEP mode. The customer application needs to focus particularly on all sleep and wake-up conditions without using the UART.