Freescale Semiconductor TWR-K70F120M User manual

Freescale Semiconductor Inc. TWRK70N512QSDLAB
TWR-K70F120M Quick Start Demo
Lab Guide for MQX 3.8
Rev. 0.2

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Contents
1Purpose.......................................................................................................................................................3
2Configure Hardware...............................................................................................................................3
3Update OSJTAG .........................................................................................................................................3
4Run the Demo............................................................................................................................................5
5Development Software and Programming the Board ................................................................7
5.1 IAR Embedded Workbench for ARM 6.30................................................................................................................7
6Task Aware Debugging.......................................................................................................................10
7Demo Software Overview ..................................................................................................................10
8Creating a new MQX project .............................................................................................................11
9OSJTAG...................................................................................................................................................... 12

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1Purpose
This lab document describes how to use the TWR-K70F120M demo that is pre-programmed onto your
Tower module. It also covers how to configure your tower module to run the demo, and the steps to
re-flash this project back onto your board.
Use Sections 2 and 3 to run the demo. Use Section 4 to learn how to re-flash the demo on the board.
2Configure Hardware
If running the TWR-K70F120M board in stand-alone mode:
1) Plug-in the battery into the battery socket on the underside of the board
2) Change J17 to pins 2-3 to connect the VBAT domain to run off the battery
If using the TWR-K70F120M board with the TWR-SER board (required for web server and USB
demos):
1)Follow the steps in the section above plus:
2)On the TWR-K70F120M board:
a. Remove J19 to use the 50Mhz clock from the TWR-SER board
3)On the TWR-SER board:
a. Change J2 to pins 3-4 to give a 50Mhz clock to the PHY
b. Add jumper to J3 pins 2-3 to bring up the 50Mhz clock from the TWR-SER
c. Add jumper to J12 pins 9-10 to put into RMII mode
If you do not have extra jumpers, you can use the ones on CAN_SEL (J5) on the TWR-SER board
4)Connect the TWR-K70F120M and TWR-SER boards via the elevator boards. Make sure the
primary side (often marked with a white stripe) goes into the elevator board with the white
edges. Detailed instructions are in the Quick Start Guide inside the TWR-ELEV module.
5)Connect an Ethernet cable between the TWR-SER board and an Ethernet port on your
computer
6)Connect a mini-B USB cable between the TWR-SER board and a USB port on your computer.
This is only required for running the USB demo.
7)Note that the default jumper settings are in the Quick Start Guide for the TWR-K70F120M and
TWR-SER if you want to change back to the default settings after you are done running the
demo.
3Update OSJTAG
Open Source JTAG (also known as OSBDM on ColdFire tower boards) allows a user to program, debug,
and get serial data from Kinetis devices via a USB cable. The firmware runs on a Freescale

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MCFS08JM60 on the underside of the Kinetis tower board. To ensure compatibility between the
drivers, firmware, and terminal window, the latest versions of each need to be installed.
First download and install both of the latest P&E Firmware Updates and Recovery and OSBDM Virtual
Serial Toolkit programs which can be found at http://www.pemicro.com/osbdm
Make sure your tower board is plugged in, and run the P&E Firmware Updater Utility to use the
OSJTAG boot loader to upgrade to the latest OSJTAG version.
Under “Select Hardware Type” make sure OSBDM/OSJTAG is selected. It should automatically detect
your board settings and fill out the rest of the fields automatically.
Click on “Update Firmware” to update the firmware. It will prompt you to disconnect the USB cord
from your computer, and then short the JM60 boot loader jumper header. It is J10and is labelled
JM60 Boot on the silk screen. Then re-connect the board to your computer.

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The firmware will then be updated on your board. When it is finished, it will prompt you again to
disconnect the USB cable, remove the jumper, and then re-connect the board again. OSJTAG is now
updated.
4Run the Demo
1) Connect a mini-B USB cable to the TWR-K70F120M tower module.
2) Allow the PC to automatically configure the OSJTAG drivers used for debugging and the serial-
to-USB feature. If you have trouble connecting to the board or using the Serial Terminal, see
Section 9 for troubleshooting and make sure you completed the steps listed in Section 3.
Touch Demo
3) Press the E1-E4 touch pads to toggle on and off the LED’s
Memory Game
4) Press SW2 to play a memory game using the Touch pads E1-E4. A sequence will light up, and
then press the touch sensors in the order flashed. If an incorrect sequence is input or you
take too long, then all the lights will blink rapidly and the game will reset. See how far you can
go!
5) Press SW1 to go back to the touch and accelerometer demo
Accelerometer Demo
6) Tilt the board back and forth to see the LED’s light up as it is tilted
7) Press SW1 and SW2 at the same time to calibrate the accelerometer. It will store the calibration
into internal flash memory, so this will only need to be done one time while the board is flat.
Terminal Demo
8) Open the P&E Terminal Utility by clicking on Start Menu->Programs->P&E Kinetis Tower Toolkit-
>Utilities->Terminal Utility
9) Make sure USB COM is selected with 115200 baud, and click on the “Open Serial Port” button.
If you have trouble connecting, see Section 9 for Troubleshooting.
10) In the terminal program, there will be a shell prompt after you hit the Enter key. Type “help” to
see the full list of commands.
11) Type “settime HH:MM” to adjust the time to HH:MM.

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12) Type “accel start” to print out the accelerometer data to the terminal. Type “accel stop” or
press SW1 or SW2 to stop the printout.
SD Card Demo
13) Insert a SD Card into the SD Socket on the underside of the board. You can then access the files
and create new files and directories on the SD Card via the shell interface. Type “help” to see
the full list of commands.
USB Mouse Demo - The following steps require the TWR-SER peripheral module:
14) Plug in a USB mini-B cable into the USB mini-B connector on the TWR-SER.
15) The tower kit will then enumerate as a mouse on your computer. You can tilt the board around
to move the mouse cursor. Press SW2 to left click. Press SW1 to right click.
Web Server Demo - The following steps require the TWR-SER peripheral module:
16) Finally we will run the web browser. The default IP address of the board is 169.254.3.3.
Typically, when you connect your computer directly to the board, the computer will default to
an auto IP address on the same subnet as the board (169.254.x.x), therefore requiring no
setup.
Note: The PC may take a few minutes to default to the auto IP address and make the
connection. Also ensure any browser proxy settings, VPN connections, and wireless
connections are turned off since that can interfere with making a connection to the IP address.
17) However, if you have trouble connecting, you may configure the IP address of the computer
manually. Select Start >Settings > Network Connections > Local Area Connection. Note your
original TCP/IP settings, and then set your IP address to 169.254.3.4 and your subnet mask to
255.255.0.0.
18) Open a web browser and go to the target device address. In this case, 169.254.3.3
19) You should see the web server welcome page in the browser window, as seen in figure below:

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20) Browse the links on the left hand side to see other pages. These pages include:
Accelerometer data
Real Time Clock (displaying elapsed time since first boot-up, or the time set by the settime
command)
Toggle LED’s
Status of the switches, LED’s, potentiometer, and ADC temperature sensor
The current score and high score in the memory game (not part of pre-flashed demo. This
page is only in web-downloaded version)
More information on the Kinetis K70 family
21) Browse web pages on the SD card you inserted earlier by clicking on the Browse SD Card link on
the left hand menu. It will link to an index.html file you can place on the SD Card. You can also
access any other webpage on the SD card by going to <board IP
address>\sdcard\file_name.html
5Development Software and Programming the Board
The following instructions describe how to build and flash the Kinetis Quick Start Demo using MQX
3.8 with IAR 6.30 (instructions for CW10.2 will be released after official MQX support for CW10.2
becomes available).
Note that for Windows Vista and Windows 7 users, it is recommended to install both the compiler
IDE and MQX outside default C:\Program Files directory.
5.1 IAR Embedded Workbench for ARM 6.30
1) Follow the directions in Section 3 to update the OSJTAG firmware and drivers. See Section 9 for
OSJTAG Troubleshooting.
2) Install IAR for ARM v6.30 or higher. The Evaluation edition or Full edition will be required
because of code size.
3) Install MQX 3.8. You can find this on the MQX website
4) You will need to enable the ESHDC and I2C0 drivers in the BSP library to use this demo.
5) Open the workspace at C:\Program Files\Freescale\Freescale MQX
3.8\config\twrK70F120M\iar\build_libs.eww
6) Open the user_config.h file in the bsp_twrK70F120M –Debug project

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7) Change
#define BSPCFG_ENABLE_I2C0 0
#define BSPCFG_ENABLE_ESDHC 0
to
#define BSPCFG_ENABLE_I2C0 1
#define BSPCFG_ENABLE_ESDHC 1
8) Save the user_configh.h file
9) Click on the Make button to re-compile the K70 BSP library. This makes the edits in the
user_config.h file take effect. Make sure bsp_twrk70f120m –Debug project is bolded
10) If you did not install the MQX project in the default C:\Program Files\Freescale\Freescale MQX
3.8\directory during installation, you must first recompile the rest of the MQX libraries. See
the MQX release notes for more information before continuing on with the lab.
11) Download the Kinetis TWR-K70F120M Quick Start Demo Lab from the TWR-K70F120M website.
This document is part of that package, so you likely will have already done this.
12) Unzip the TWRK70F120MQSDLAB.zip file you just download, and run the executable located
inside. It will install the lab project and this lab guide into the C:\Program
Files\Freescale\Freescale MQX 3.8\demo directory by default. If MQX is installed in another
location, point the installer to the \demo directory at that location instead.
13) Open the workspace file that will be located at C:\Program Files\Freescale\Freescale MQX
3.8\demo\TWR-K70F120M_Quick_Start_Demo\iar\TWR-K70F120M_Quick_Start_Demo.eww
14) Open the web.h file in the project pane window. Double-click the file item located in the
“Source/web” group in the project tree.

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15) You can change the default IP address by modifying the ENET_IPADDR define. For example, to
set the target address to 169.254.3.3, and the line will be:
#define ENET_IPADDR IPADDR(169,254,3,3)
16) You could also use DHCP instead of a static IP address by setting
DEMOCFG_ENABLE_DHCP to 1in web.h
17) Save the file after you are done.
18) Select the Int Flash Debug target
19) Compile the project by clicking the Make icon (or right clicking on the project and select
“Make”).
20) After compilation completes, download the code to the board and start the debugger by
pressing the “Download and Debug” button
21) The code will download Flash, and the debugger screen will come up and pause at the first
instruction. Hit the “Go” button to start running.

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6Task Aware Debugging
MQX comes with Task Aware Debugging (TAD) when using both CodeWarrior and IAR IDE’s. This
feature is only available in the Evaluation or Full editions of those compilers.
To use TAD, start up an MQX project within the debugger. While the project is running, hit the Break
button ( in IAR, or in CodeWarrior) to pause the debugger. Then click on MQX->Task Summary
to see all the tasks MQX is running and their current state. Explore the other options as well, and look
at the Release Notes for more information on TAD.
7Demo Software Overview
This demo is a combination of several tasks running in parallel, while using MQX drivers and stacks.
Looking at Tasks.c first, this contains the MQX_template_list[] data structure. This has the attributes
for all the tasks that will be created by this demo, except for the webserver tasks. It includes the stack
size for each tasks, their priority, and any other attributes. More details can be found in the MQX
User Guide in the <mqx_dir>\docs\mqx directory.
The Init_Task is the only task with the MQX_AUTO_START_TASK attribute set, so it is the only task
that will be running at bootup. This code for this task is in Init_Task.c. This task will start all the other
tasks for the demo.
Inside the initialization task, global variables are initialized and then the GPIO driver is initialized.
Next the Accl_Task is started, which polls the MMA7660 sensor on the TWR-K70F120M over I2C.
Then the ADC_Task is started, which polls the ADC channel connected to the potentiometer, and the
ADC temperature sensor. The values for these readings are stored in a global SENSOR_DATA
structure, so that their information can be easily re-used by other tasks.
Next the memory game task is started, which waits for the memory mode to start.