Silicon Laboratories CP2400-DK Manual de usuario

CP2400/1-DK

CP2400 AND CP2401 DEVELOPMENT KIT USER’SGUIDE

1. Overview

The LCD Development Kits (CP2400-DK and CP2401-DK) provide all the hardware and software required to

develop and test LCD applications. The CP240x LCD Firmware Library is included to aid in the code development

process and handle the communication between the C8051F9xx MCU and the CP2400/1 LCD controller. The LCD

library can be used to communicate with the LCD controller through the SPI interface (CP2400-DK) or the SMBus

interface (CP2401-DK). Example code using the LCD library is included with both development kits.

The LCD development kit hardware includes a C8051F930 target board, CP2400 or CP2401 LCD Development

Board, USB Debug adapter, and an ac to dc power adapter. The C8051F930 Target Board features the 25 MIPS,

64 kB Flash, over 4 kB RAM, 8051-based C8051F930 MCU. The C8051F930 MCU is part of the low-power family

and can operate with a supply voltage from 0.9 to 3.6 V. The MCU LCD interface provided by the AB board

consists of the CP2400/1 LCD controller and an LCD and is compatible with the C8051F930-DK and C8051F912-

DK. The LCD development kit includes example code which uses either the SPI interface (CP2400-DK) or SMBus

interface (CP2401-DK) on the C8051F930 to control the LCD using the LCD library.

The Silicon Labs’ IDE supports full-speed, non-intrusive MCU debugging and is bundled with an evaluation version

of the Keil C51 Toolchain allowing immediate application code evaluation in C. Projects with up to 4 kB of object

code and unlimited library code can be developed using the included toolset. Numerous application code examples

are included in the development kit and a walkthrough of an LCD example is included in 6. "Example Source

Code‚" on page 11.

Figure 1. C8051F912-TB Target Board and CP2400 LCD Development Board

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2. Kit Contents

The CP2400/1 LCD development kit contains the following items:

C8051F930 target board

CP2400 or CP2401 LCD development board

CP240x development kit quick-start guide

Silicon Laboratories IDE and product information CD-ROM. CD content includes the following:

Silicon Laboratories Integrated Development Environment (IDE)

Keil 8051 development tools (macro assembler, linker, evaluation C compiler)

Source code examples and register definition files

Documentation

CP2400 and CP2401 Development Kit User’s Guide (this document)

AC to DC power adapter

USB Debug Adapter (USB to debug interface)

2 USB cables

2 AAA batteries

Figure 2. C8051F930 Target Board

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Figure 3. CP2400 Development Board

3. Software Overview

All software required to develop firmware and communicate with the target microcontroller is included in the CD-

ROM. The CD-ROM also includes other useful software.

Below is the software necessary for firmware development and communication with the target microcontroller:

Silicon Laboratories Integrated Development Environment (IDE)

Keil 8051 development tools (macro assembler, linker, evaluation C compiler)

Other useful software that is provided in the CD-ROM includes the following:

Configuration Wizard 2

Keil µVision drivers

CP210x USB to UART Virtual COM Port (VCP) drivers

3.1. Software Installation

The included CD-ROM contains the Silicon Laboratories Integrated Development Environment (IDE), Keil software

8051 tools and additional documentation. Insert the CD-ROM into your PC’s CD-ROM drive. An installer will

automatically launch, allowing you to install the IDE software or read documentation by clicking buttons on the

Installation Panel. If the installer does not automatically start when you insert the CD-ROM, run autorun.exe found

in the root directory of the CD-ROM. Refer to the ReleaseNotes.txt file on the CD-ROM for the latest information

regarding known problems and restrictions. After installing the software, see the following sections for information

regarding the software and running one of the demo applications.

3.2. CP210x USB to UART VCP Driver Installation

The C8051F930 Target Board includes a Silicon Laboratories CP2103 USB-to-UART Bridge Controller. Device

drivers for the CP2103 need to be installed before PC software such as HyperTerminal can communicate with the

target board over the USB connection. If the "Install CP210x Drivers" option was selected during installation, this

will launch a driver “unpacker” utility.

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1. Follow the steps to copy the driver files to the desired location. The default directory is C:\Silabs\MCU\CP210x.

2. The final window will give an option to install the driver on the target system. Select the “Launch the CP210x

VCP Driver Installer” option if you are ready to install the driver.

3. If selected, the driver installer will now launch, providing an option to specify the driver installation location. After

pressing the “Install” button, the installer will search your system for copies of previously installed CP210x

Virtual COM Port drivers. It will let you know when your system is up to date. The driver files included in this

installation have been certified by Microsoft.

4. If the “Launch the CP210x VCP Driver Installer” option was not selected in step 3, the installer can be found in

the location specified in step 2, by default C:\Silabs\MCU\CP210x\Windows_2K_XP_S2K3_Vista. At this

location run CP210xVCPInstaller.exe.

5. To complete the installation process, connect the included USB cable between the host computer and the USB

connector (P3) on the C8051F930 Target Board. Windows will automatically finish the driver installation.

Information windows will pop up from the taskbar to show the installation progress.

6. If needed, the driver files can be uninstalled by selecting “Silicon Laboratories CP210x USB to UART Bridge

(Driver Removal)” option in the “Add or Remove Programs” window.

3.3. Silicon Laboratories IDE

The Silicon Laboratories IDE integrates a source-code editor, a source-level debugger, and an in-system Flash

programmer. See Section 5. "Using the Keil Software 8051 Tools with the Silicon Laboratories IDE‚" on page 10 for

detailed information on how to use the IDE. The Keil Evaluation Toolset includes a compiler, linker, and assembler

and easily integrates into the IDE. The use of third-party compilers and assemblers is also supported.

3.3.1. IDE System Requirements

The Silicon Laboratories IDE requirements:

Pentium-class host PC running Microsoft Windows 2000 or newer

One available USB port

64 MB RAM and 40 MB free HD space recommended

3.3.2. 3rd Party Toolsets

The Silicon Laboratories IDE has native support for many 8051 compilers. The full list of natively supported tools is

as follows:

Keil

IAR

Raisonance

Tasking

Hi-Tech

SDCC

The demo applications for the C8051F930 target board are written to work with the Keil and SDCC toolsets.

3.4. Keil Evaluation Toolset

3.4.1. Keil Assembler and Linker

The Keil demonstration toolset assembler and linker place no restrictions on code size.

3.4.2. Keil Evaluation C51 C Compiler

The evaluation version of the C51 compiler is the same as the full version with the following limitations: (1)

Maximum 4 kB code generation, (2) There is no floating point library included. When installed from the CD-ROM,

the C51 compiler is initially limited to a code size of 2 kB, and programs start at code address 0x0800. Refer to

“AN104: Integrating Keil Tools into the Silicon Labs IDE" for instructions to change the limitation to 4 kB and have

the programs start at code address 0x0000.

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3.5. Configuration Wizard 2

The Configuration Wizard 2 is a code generation tool for all of the Silicon Laboratories devices. Code is generated

through the use of dialog boxes for each of the device's peripherals.

Figure 4. Configuration Wizard 2 Utility

The Configuration Wizard utility helps accelerate development by automatically generating initialization source

code to configure and enable the on-chip resources needed by most design projects. In just a few steps, the wizard

creates complete startup code for a specific Silicon Laboratories MCU. The program is configurable to provide the

output in C or assembly language. For more information, refer to the Configuration Wizard documentation.

Documentation and software is available on the kit CD and from the downloads webpage: www.silabs.com/

mcudownloads.

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3.6. Silicon Labs Battery Life Estimator

The Battery Life Estimator is a system design tool for battery operated devices. It allows the user to select the type

of battery they are using in the system and enter the supply current profile of their application. Using this

information, it performs a simulation and provides an estimated system operating time. The Battery Life Estimator

is shown in Figure 5.

Figure 5. Battery Life Estimator Utility

From Figure 5, the two inputs to the Battery Life Estimator are battery type and discharge profile. The utility

includes battery profiles for common battery types such as AAA, AA, A76 Button Cell, and CR2032 coin cell. The

discharge profile is application-specific and describes the supply current requirements of the system under various

supply voltages and battery configurations. The discharge profile is independent of the selected power source.

Several read-only discharge profiles for common applications are included in the pulldown menu. The user may

also create a new profile for their own applications.

To create a new profile:

1. Select the profile that most closely matches the target application or choose the "Custom Profile".

2. Click Manage

3. Click Duplicate

4. Click Edit

Profiles may be edited with the easy-to-use GUI (shown in Figure 6).

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Figure 6. Battery Life Estimator Discharge Profile Editor

The Discharge Profile Editor allows the user to modify the profile name and description. The four text entry boxes

on the left hand side of the form allow the user to specify the amount of time the system spends in each power

mode. On the right hand side, the user may specify the supply current of the system in each power mode.

Since supply current is typically dependent on supply voltage, the discharge profile editor provides two columns for

supply current. The V2 and V1 voltages at the top of the two columns specify the voltages at which the current

measurements were taken. The Battery Life Estimator creates a linear approximation based on the input data and

is able to feed the simulation engine with an approximate supply current demand for every input voltage.

The minimum system operating voltage input field allows the system operating time to stop increasing when the

simulated battery voltage drops below a certain threshold. This is primarily to allow operating time estimates for

systems that cannot operate down to 1.8 V, which is the voltage of two fully drained single-cell batteries placed in

series.

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The wakeup frequency box calculates the period of a single iteration through the four power modes and displays

the system wake up frequency. This is typically the "sample rate" in low power analog sensors.

Once the battery type and discharge profile is specified, the user can click the "Simulate" button to start a new

simulation. The simulation engine calculates the estimated battery life when using one single-cell battery, two

single-cell batteries in series, and two single-cell batteries in parallel. Figure 7 shows the simulation output window.

Figure 7. Battery Life Estimator Utility Simulation Results Form

The primary outputs of the Battery Life Estimator are an estimated system operating time and a simulated graph of

battery voltage vs. time. Additional outputs include estimated battery capacity, average current, self-discharge

current, and the ability to export graph data to a comma delimited text file for plotting in an external graphing

application.

3.7. Keil µVision2 and µVision3 Silicon Laboratories Drivers

As an alternative to the Silicon Laboratories IDE, the µVision debug driver allows the Keil µVision2 and µVision3

IDEs to communicate with Silicon Laboratories’ on-chip debug logic. In-system Flash memory programming

integrated into the driver allows for rapid updating of target code. The µVision2 and µVision3 IDEs can be used to

start and stop program execution, set breakpoints, check variables, inspect and modify memory contents, and

single-step through programs running on the actual target hardware. For more information, refer to the µVision

driver documentation. The documentation and software are available on the kit CD and from the downloads

webpage: www.silabs.com/mcudownloads.

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4. Hardware Setup using a USB Debug Adapter

The target board is connected to a PC running the Silicon Laboratories IDE via the USB Debug Adapter as shown

in Figure 9.

1. Connect the LCD development board to the F930 target board as shown in Figure 8.

2. Connect the USB Debug Adapter to the DEBUG connector on the C8051F930 target board with the 10-pin

ribbon cable.

3. Connect one end of the USB cable to the USB connector on the USB Debug Adapter.

4. Connect the other end of the USB cable to a USB Port on the PC.

5. Verify that a shorting block is installed on J17 and that SW5 is in the ON position on the C8051F930 target

board.

6. Verify that a shorting block is installed on J2 of the CP2400/1 LCD Development Board.

7. Connect the ac/dc power adapter to power jack P1 on the C8051F930 target board (Optional).

Notes:

Use the Reset button in the IDE to reset the target when connected using a USB Debug Adapter.

Remove power from the target board and the USB Debug Adapter before connecting or disconnecting the

ribbon cable from the target board. Connecting or disconnecting the cable when the devices have power can

damage the device and/or the USB Debug Adapter.

Figure 8. CP2400/1 LCD Development Board Attachment

Figure 9. Hardware Setup Using a USB Debug Adapter

CP2400U1

D2D1

IMEASURE

J5J4

LED PWR

SILICON LABS

www.silabs.com

CP2400-GQ LCD

DEVELOPMENT BOARD

P0.2 P0.3

2103

DEBUG

RESET

J17

IMEASURE

SILICON LABS

www.silabs.com

J7 J13

F930

J14

J11

J10

VBAT

WALL_PWR

AAA_BAT

COIN_CELL

J15

J16

R15

J12J8

P1.6

P1.5

+1VD

+3VD

VBAT

VDD/DC+

USB POWER

POWER OFF BEFORE

SW4

SWITCHING MODE

2 CELL 1 CELL

TOUCH SENSE SWITCH

P2.1

TOUCH SENSE SWITCH

P2.0

OFF

SW5

USB

Cable

AC/DC

Adapter

Target Board

P0.2 P0.3

2103

DEBUG

USB POWER

RESET

P1.6

P1.5

POWER OFF BEFORE

SW4

SWITCHING MODE

2 CELL 1 CELL

J17

IMEASURE

SILICON LABS

www.silabs.com

J6 VDD/DC+

J7 J13

F930

J14

J11

J10

VBAT

WALL_PWR

AAA_BAT

COIN_CELL

TOUCH SENSE SWITCH

P2.0 TOUCH SENSE SWITCH

P2.1

J15

J16

R15

J12J8

+3VD

+1VD

VBAT

SW5

OFF

Silicon Laboratories

USB DEBUG ADAPTER

Run

Stop Power

USB Debug

Adapter

CP2400U1

D2D1

IMEASURE

J5J4

LED PWR

SILICON LABS

www.silabs.com

CP2400-GQ LCD

DEVELOPMENT BOARD

LCD Development Board

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5. Using the Keil Software 8051 Tools with the Silicon Laboratories IDE

To perform source-level debugging with the IDE, configure the Keil 8051 tools to generate an absolute object file in

the OMF-51 format with object extensions and debug records enabled. Build the OMF-51 absolute object file by

calling the Keil 8051 tools at the command line (e.g., batch file or make file) or by using the project manager built

into the IDE. The default configuration when using the Silicon Laboratories IDE project manager enables object

extension and debug record generation.

Refer to

"AN104: Integrating Keil 8051 Tools into the Silicon Labs IDE"

the “Silabs\MCU\Documentation\ApplicationNotes” directory on the CD-ROM for additional information on using the

Keil 8051 tools with the Silicon Laboratories IDE.

To build an absolute object file using the Silicon Laboratories IDE project manager, you must first create a project.

A project consists of a set of files, IDE configuration, debug views, and a target build configuration (list of files and

tool configurations used as input to the assembler, compiler, and linker when building an output object file).

The following sections illustrate the steps necessary to manually create a project with one or more source files,

build a program, and download it to the target in preparation for debugging. (The IDE will automatically create a

single-file project using the currently open and active source file if you select Build/Make Project before a project is

defined.)

5.1. Creating a New Project

1. Select ProjectNew Project to open a new project and reset all configuration settings to default.

2. Select FileNew File to open an editor window. Create your source file(s) and save the file(s) with a

recognized extension, such as .c, .h, or .asm, to enable color syntax highlighting.

3. Right-click on “New Project” in the Project Window. Select Add files to project. Select files in the file browser

and click Open. Continue adding files until all project files have been added.

4. For each of the files in the Project Window that you want assembled, compiled and linked into the target build,

right-click on the file name and select Add file to build. Each file will be assembled or compiled as appropriate

(based on file extension) and linked into the build of the absolute object file.

5. If a project contains a large number of files, the “Group” feature of the IDE can be used to organize. Right-click

on “New Project” in the Project Window. Select Add Groups to project. Add pre-defined groups or add

customized groups. Right-click on the group name and choose Add file to group. Select files to be added.

Continue adding files until all project files have been added.

5.2. Building and Downloading the Program for Debugging

1. Once all source files have been added to the target build, build the project by clicking on the Build/Make Project

button in the toolbar or selecting ProjectBuild/Make Project from the menu.

Note: After the project has been built the first time, the Build/Make Project command will only build the files that

have been changed since the previous build. To rebuild all files and project dependencies, click on the Rebuild

All button in the toolbar or select ProjectRebuild All from the menu.

2. Before connecting to the target device, several connection options may need to be set. Open the Connection

Options window by selecting OptionsConnection Options... in the IDE menu. First, select the appropriate

adapter in the “Serial Adapter” section. Next, the correct “Debug Interface” must be selected. C8051F93x-

C8051F92x family devices use the Silicon Labs 2-wire (C2) debug interface. Once all the selections are made,

click the OK button to close the window.

3. Click the Connect button in the toolbar or select DebugConnect from the menu to connect to the device.

4. Download the project to the target by clicking the Download Code button in the toolbar.

Note: To enable automatic downloading if the program build is successful select Enable automatic connect/

download after build in the ProjectTarget Build Configuration dialog. If errors occur during the build process,

the IDE will not attempt the download.

5. Save the project when finished with the debug session to preserve the current target build configuration, editor

settings and the location of all open debug views. To save the project, select ProjectSave Project As... from

the menu. Create a new name for the project and click on Save.

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