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EVB User Guide
5. Illustration
5.1. Power on
(1) Insert the plug of the 5V power adapter.
(2) Switch S1 to ON state, Switch S2 to OFF state, Switch S3 to OFF state, and Switch S4 to
OFF state. The LED L1 on the EVB will be bright.
(3) Press the K1 button (PWRKEY) for about 2 seconds. The LED L4 will be on and indicates
the working mode of module. When L4 is on, the module begins running. Otherwise, please
check the circuit.
The LED L2 will be blinking at a certain frequency. The GSM working status of the module
(4)
can be judged by this LED.
Please refer to document [3] for detailed network status indication. .
5.2. Communicate with the module
(1) Plug USB to UART cable to PC and EVB correctly.
(2) Open the HyperTerminal (AT command window) on 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 number which can be checked by the
Device Manager on PC.
(3) Connect an antenna to M80-EVB with an RF cable.
(4) Insert SIM card into the SIM1 card socket.
(5) Insert earphone or handset into audio interface.
(6) For Power On operation, please refer to chapter 5.1.
(7) After waiting for 2~3 seconds, customer should first 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 the details of AT commands. For instance, when input
"ATD112;" an emergency call is established.
5.3. Firmware upgrade through main UART
(1) Plug USB to UART cable to PC and EVB correctly.
(2) Start the Firmware Upgrade Tool in the PC.
(3) Press the START button in the Firmware Upgrade Tool.
(4) Switch the S4 and S1 in the EVB to ON state
After these steps, the firmware refreshing process will be proceeding. For more details, please
refer to document [4].
M80_EVB_UGD_V1.0
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