A second green LED is used to indicate that power is being supplied to the module. It cannot be controlled by the
user.
The SNAPstick does not provide access to any other of the 17 General Purpose Input/Output (GPIO) pins
available on the RF engines. These are accessible with other forms of Synapse evaluation hardware.
Synapse offers 3 other types of SNAP nodes:
•
SN163 Bridge Demonstration Board
•
SN111 End Device Demonstration Board
•
SN171 Proto Board
USB
Interface
The USB interface on the SNAPstick communicates with the connected RF Engine via internal UART 1. This
UART is connected to GPIO pins 7-10. The following table describes their use.
Pin Name
Direction of Pin
Description
GPIO 7
Input
UART1 Rx Data
GPIO 8
Output
UART1 Tx Data
GPIO 9
GPIO 10
Bidirectional
Bidirectional
UART1 CTS
UART1 RTS
Powering Options
The SNAPstick can be powered using any form of standard USB connection.
Note
: It must be a powered
-
USB connection. Examples include: a PC/laptop port, a powered
-
USB hub, or
a stand-alone USB AC adapter
The module does
not
require Synapse’s Portal software or other software drivers to be installed in order to draw
power from the PC’s USB port.
Figure
3 –
A SNAPstick drawing power from a laptop PC and USB AC Adapter
2
SN 132 SNAPstick
Summary of Contents for SNAPstick SN 132
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