User guide

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Redpine Signals, Inc. Proprietary and confidential Page 20
4: Components on the Companion Card and their
Usage
The Wi-Fi I/O Companion Card has switches to enable the user to
configure it for different scenarios. The figure below shows the various
components.
Connect-io-n
Module
(RS9110-N-11-22)
DIP
Switches
R8C/25 JA-1
Connector
Figure
12: Figure 6: Components on the R8C25 Companion Card
The following sections explain these components and their configuration
for the different usage scenarios.
4.1: DIP Switches
The 2 DIP Switches on the Companion card are used for the following
purposes:
1. Select between SPI and UART modes
2. To enable debug modes
DIP Switch 1 is used to select between the UART and SPI interfaces.
Placing this switch towards the ‘ON’ label selects SPI
3
and flipping it to the
opposite side selects UART. Dip Switch 2 should always be placed on the
side opposite to the ‘ON’ label.
3
The RS-R8C25-2200 Starter Kit supports only the UART interface as per the latest
software release.