iC880A QuickStart Guide - QuickStart Guide
Precaution: Important note
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iC880A_QuickStartGuide.docx, Wireless Solutions, V0.6
page 4 of 15
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Precaution: Important note
Caution: Before connecting the iC880A to an external power supply, please read this note
carefully!
The WiMOD iC880A concentrator is a versatile device that needs extra power to operate
properly. The USB specification allows a device to draw up to 500 mA in normal operation
conditions. Within the defined performance range the concentrator needs more than 500 mA.
Depending on your Linux host that is to be connected with the iC880A, the USB interface cannot
supply enough power. Therefore an external power supply is highly recommended.
When using an external power supply a certain order of connecting the cables must be followed:
1)
First: power up the iC880A with an external power supply
2)
Second: connect the USB cable between the iC880A and the host.
Make sure the external power supply is on and supplies 5 V before connecting the power cable.
If there is no power available and the connector is in the DC jack, the internal voltage regulators
of the iC880A may get damaged!
The polarity of the external DC-Jack is shown in Figure 1-1:
Figure 1-1 Polarity of the 5V DC-Jack
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Overview
Purpose of this documentation is to give some useful information how to start developing your
own software based on the open source LoRa HAL published on the github platform.
The concentrator module iC880A is meant to be connected to a host system forming an
integrated gateway.
2.1
Hardware PCB
Figure 2-1 depicts the printed circuit board of the iC880A. As main interfaces there are the DC
–Power Jack and the USB-Connector to a host system that runs the driver software. A SMA
connector is supplied in order to connect any suitable antenna to this board. The board offers
some LEDs to give a visual feedback of the current operation status of the board. The concrete
meaning of the LEDs is software dependant. As default setting the LEDs is:
