RP6 ROBOT SYSTEM - 3. RobotLoader 2
connection. You should also see outputs on the LCD (if one is connected). Please fol-
low the instructions of the program.
First of all, press the two buttons SW1 and SW2. Just afterwards the red LEDs will be
tested – so please pay attention if they all light up (only the red LEDs are directly con-
trolled by the microcontroller, the other LEDs are linked to the WLAN module)!
The I²C test performs a small running light with the LEDs on the RP6 main board to
check the communication.
At the end of the test, the text is read and output from the SD card.
If no SD card
had been inserted, you will get an error message. In this case, you can of
course ignore it.
It will show a test failed message but the module will usually be
just OK, you can test it again later when you have a suitable card.
If all this is working perfectly, you can start with the example program once you have
finished to read the manual!
3.4. WLAN Command-Line Interface
There are 2 ways to access the WLAN module via the terminals. One is of course via
the network which is however only possible if the connection is working properly. The
other way is via the serial interface (USB interface). For this purpose, the microcon-
troller switches into a “Passthrough” mode where it transfers everything from the PC
to the WLAN module and the other way round. Therefore the WLAN module is very
convenient to configure. The microcontroller doesn't need to set anything on its own
in the program as the settings of the WLAN module can be stored in internal memory.
To activate the passthrough mode, just click on
Options → WiFi SERIAL Config →
Enable Passthrough Mode
in the RobotLoader menu. After that, all inputs into the
serial terminal are transmitted to the
WLAN module (please make sure that
CR or CR+LF are activated in the op-
tions!).
If you type in:
.$$$
you will enter the command mode
(the dot at the beginning is only ne-
cessary in the RobotLoader terminal
and makes sure that a delay is inser-
ted before and after and that NO
CR+LF is sent – it is not easily pos-
sible to do it differently in the Robot-
Loader terminal as the transmission
starts only when the enter button is
pressed and then the separation sign
is added automatically).
The command mode offers many op-
tions to configure the WLAN module
and to request the current status. The table on the next page shows a few useful
commands but it is far from being exhaustive. Please refer to the detailed documenta-
tion of the manufacturer.
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