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Data Logger, Motion Sensor, Temperature Sensors, CAN Transceiver, OLED, and SD Card (Schematic page 2)

2.1.3 User Switches and User LED

Five switches on the board provide navigation and selection for the preloaded quickstart application.

These switches can be used for other purposes in the user’s custom applications.

The development board also has a green user LED.

Table 2-2 shows how these features are connected to the pins on the microcontroller.

Table 2-2. User Switches and User LED Signals

GPIO Pin Pin Function Feature

PM0 GPIO SW1 (Up)

PM1 GPIO SW2 (Down)

PM2 GPIO SW3 (Left)

PM3 GPIO SW4 (Right)

PM4 GPIO SW5 (Select/Wake)

PG2 GPIO User LED

2.1.4 GPIO Headers

All unused pins on the microcontroller as routed out to 0.1" headers along the edges of the board and are

conveniently labeled with their port and pin names.

The remaining pins are broken out to headers located near the hardware feature that uses them. These

are also on a 0.1" grid. All of these headers are labeled with the port and pin name, and, where possible,

labeled with their function. See Schematics for detailed information on these signals.

2.2 Data Logger, Motion Sensor, Temperature Sensors, CAN Transceiver, OLED, and SD

Card (Schematic page 2)

2.2.1 Data Logger

The DK-TM4C123G comes with a quickstart application loaded into the Flash memory. This application

implements a multi-channel data logger that can measure up to four analog channels (0-20 V), nine axes

from the motion sensor, two analog temperature sensors, and the microcontroller running current.

A Windows quickstart companion application is also provided on the development kit USB flash drive and

serves as a secondary display for the Data Logger application. See Software Description for more

information.

2.2.2 4-Channel Analog Measurement

An 8-position screw terminal block is included on the development board to make easy connections to

external signals.Table 2-3 shows how the screw terminals and channels are arranged.

Table 2-3. 4-Channel Analog Measurement Signals

GPIO Pin Pin Function Terminal

- - +VBUS

PE0 AIN3 CH3

PE1 AIN2 CH2

PE2 AIN1 CH1

PE3 AIN0 CH0

- - GND

- - CANH

- - CANL

SPMU357B–August 2013–Revised March 2014 Hardware Description

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