Kinetis SDK v.1.2 Demo Applications User's Guide  Rev. 0
Freescale Semiconductor, Inc.
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GPIO Example

Overview

The GPIO Example project is a demonstration program that uses the KSDK software to manipulate the general-purpose outputs. The example is supported by the set, clear, and toggle write-only registers for each port output data register. The example uses the software button to control/toggle the LED.

Supported Platforms

These Freescale Freedom development platforms and Tower System modules are supported by the GPIO example.

System Requirement

Hardware requirements

Toolchain requirements

Software requirements

Getting Started

Hardware settings

The GPIO Example project does not call for any special hardware configurations. Although not required, the recommendation is to leave the development board's jumper settings and configurations in default state when running this example.

Prepare the example

  1. Connect a USB cable between the PC host and the OpenSDA USB port on the board.
  2. Open a serial terminal with these settings:
    • 115200 baud rate
    • 8 data bits
    • No parity
    • One stop bit
    • No flow control
  3. Download the program to the target board.
  4. Either press the reset button on your board or launch the debugger in your IDE to begin running the example.

Run the example

These instructions are displayed/shown on the terminal window:

GPIO PD Driver example
Press SW to turn on/off a LED1

Press the SW (*) button on the board and observe the LED toggle, which is controlled by GPIO.