DEMOACKIT【PDF 1/2 页】KIT DEMO KIT FOR DC9S08A

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DEMOACKIT—Lab Tutorial

Embedded Microcontrollers

Run demo on 8-bit S08:

1. Compile and program the 8-bit AC128 microcontroller with

Accelerometer Application by clicking on “Debug” button,

launching Debugger.

2. From Connection Manager menu, select “DEMOAC on USB1

(Name=Pennnnnnn)” port and click on “Connect (Reset).”

3. From Loader Warning menu, click on “OK” to allow the debugger to

mass erase the microcontroller’s on-chip flash memory and program

it with the new application.

4. Click on “Start/Continue (F5)” button in debugger to run

application.

5. Bring Accelerometer Demo utility to front, click “Open Serial Port and

Start Demo” button.

6. Move board around to demonstrate 3-axis accelerometer.

7. Observe output in Accelerometer Demo utility.

8. Click button labeled “SW1” on board to enable data averaging.

Move board.

9. Click button labeled “SW2” on board to enable data filtering.

Move board.

The accelerometer demo clearly shows the CPU

performance gains of the 32-bit ColdFire V1 CPU over the

8-bit S08 CPU. In the data averaging and data filtering

modes, a considerable amount of 16-bit and 32-bit math

is required. The S08 CPU is capable of performing these

tasks, but it requires a substantial portion of its bandwidth.

The ColdFire V1 CPU performs the same tasks with only a

very small portion of its bandwidth. Overall, the lab shows

that with Flexis AC microcontrollers, you can pick and

choose the CPU for your performance needs.

Flexis ? AC DEMOACKIT

Lab tutorial

Learn More: For more information about Freescale products,

please visit www.freescale.com/flexis

Freescale and the Freescale logo are trademarks or registered trademarks of Freescale Semiconductor, Inc.

in the U.S. and other countries. All other product or service names are the property of their respective owners.

? Freescale Semiconductor, Inc. 2008.

Agile Number: 926-77696

Doc Number: DEMOACLAB / REV 0

DEMOACKIT—Lab Tutorial

Setup demo:

1. Open CodeWarrior for Microcontrollers. From Windows start menu,

you can locate it using the “Programs>Freescale CodeWarrior>CW

for Microcontroller V6.1>CodeWarrior IDE.exe” path.

2. Click on “Load Example Project” from CodeWarrior startup dialog.

3. From example projects menu, open tree to select: “ColdFire

V1>Evaluation Board Examples>DEMOAC>DEMO51AC256_

Accelerometer_test.”

4. Create a new project name (ex. Lab3), set desired location, and click

“Create Project.” This will open the project for the Accelerometer

Application for the 32-bit AC256 microcontroller.

5. Launch Accelerometer Demo utility from Windows start menu:

Programs>P&E Embedded Multilink Toolkit>Utilities>Accelerometer

Demo. *See DEMOAC User Manual for details on the Accelerometer

Demo utility.

6. Set port to USB COM.

7. Set Baud rate to 115200.

8. Turn board power switch to OFF position.

9. Make sure the red 32-bit ColdFire V1 ? MCF51AC256 daughter card

is plugged in to board. Board jumpers should all be set to the default

settings shown in Quick Start Guide.

10. Turn board power switch to ON position and close debugger window.

Accelerometer Demo running on 32-bit AC256 in data

averaging mode. The orange bar graph labeled “C” highlights

the bus cycles required to average the last 16 readings of

the 3 axes. The values shown in fourth column of text are the

number of bus cycles in hex.

Run demo on the 32-bit ColdFire V1:

1. Compile and program the 32-bit AC256 microcontroller

with Accelerometer Application by clicking on “Debug”

button, launching Debugger.

2. From Connection Manager menu, select “USB1:DEMOAC

(PEnnnnnnn)” port and click on “Connect (Reset).”

3. From Erase and Program Flash menu, click on “Yes” to allow

the debugger to mass erase the microcontroller’s on-chip flash

memory and program it with the new application.

4. Click on the “Start/Continue (F5)” button in debugger to run

application.

5. Bring Accelerometer Demo utility to front and click the “Open Serial

Port and Start Demo” button.

6. Move board around to demonstrate 3-axis accelerometer.

7. Observe output in Accelerometer Demo utility.

8. Click button labeled “SW1” on board to enable data averaging. Move

board.

9. Click button labeled “SW2” on board to enable data filtering. Move

board.

Change device to 8-bit S08:

1. Click “Close Port” in Accelerometer Demo utility.

2. Close the “True-Time Simulator & Real-Time Debugger” window.

3. Bring CodeWarrior IDE window to front with Accelerometer Application

project for 8-bit microcontroller.

4. Click the “MCU Change Wizard” button to switch project to

8-bit microcontroller.

5. From Wizard, change microcontroller selection from 32-bit

“MCF51AC256” to 8-bit “MC9S08AC128” in the “Flexis>AC Family”

tree. Make sure ‘P&E Multilink/Cyclone Pro’ is selected as the default

connection.

6. Click “Finish.” In the background, CodeWarrior will transform your

project to the 32-bit microcontroller with no software changes

needed.

7. Turn board power switch to OFF.

8. Replace the 80-Pin LQFP 32-bit ColdFire ? V1 AC256 microcontroller

with an 80-Pin LQFP 8-bit S08 AC128 microcontroller in the

daughter card.

9. Turn board power switch to ON.

Accelerometer Demo running on 8-bit S08 AC128 in data

averaging mode. The orange bar graph labeled “C” highlights

the bus cycles required to average the last 16 readings of the 3

axes. The values shown in fourth column of text are the number

of bus cycles in hex.

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