User guide

M33 EVB User Guide
5. Illustration
5.1. Power on Operations
(1) Assembly the M33 module to the 100-pin connector on the M33 EVB. Put Switch S1 to ON
state. Put Switch S2 to OFF position and Switch S3 to OFF position. Plug in 5V DC adapter.
The LED L1 on the EVB will go bright.
(2) Press the ON/OFF button for more than 2 seconds. When the STATUS_LED is lightened, and
NET_LED is blinked , the module is working fine.
5.2. Communicate with the Module
(1) Connect the Serial Port 1 on EVB to PC’s USB port with the USB to UART converter cable.
(2) Open the HyperTerminal (AT command window) in the PC. The location of the
HyperTerminal in Windows XP is START →program →accessory →communication
→HyperTerminal. Set appropriate Baud Rate (such as 115200 bps) and COM port number
which can be checked by the Device Manager in the PC.
(3) Connect an antenna to the M33 with an RF cable.
(4) Insert SIM card into the SIM card socket.
(5) Insert earphone or handset into audio interface.
(6) Power on the module by pressing the ON/OFF button.
(7) After waiting for 2~3 seconds, customer should firstly input “AT” or “at” string once or more
until receiving “OK” from the module in the HyperTerminal.
The module is set to autobauding mode in default configuration. This operation is to
synchronize the baud rate between the computer and the module.
(8) Input AT command and the module will execute its corresponding function.
Customer can refer to Document [1] for details of AT commands. For instance, typing
“ATD112;” makes a call to the emergency number 112.
5.3. Use Camera Function of the Module
(1) Before powering on the module, assemble M33_EVB_TE board to M33_EVB board, and put
camera module onto M33_EVB_TE board.
(2) Power on the module by pressing the ON/OFF button.
(3) Sending “AT+QCAMSEL="OV7725"” and “AT+QCAMON” can drive the module enter
camera standby mode.
(4) Sending “AT+QCAMSOT”, “AT+QCAMMSOT” or “AT+QCAMAVI” can take photo and
video.
(5) M33_EVB_TE Board comes with a bunch of infrared LEDs around the Camera. These can
be used to emit infrared light for object in dark environment. Customer can manually set the
Infrared Lights Switch (refer to Figure 24.) to ON or OFF state.
M33_EVB_UGD_V1.0 - 28 -
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