Silicon Laboratories C8051F04X-DK Manual de usuario

C8051F04x-DK

C8051F04XDEVELOPMENT KIT USER’SGUIDE

1. Kit Contents

The C8051F04x Development Kit contains the following items:

• Two C8051F040 Target Boards

• C8051Fxxx Development Kit Quick-Start Guide

• Silicon Laboratories IDE and Product Information CD-ROM. CD content includes:

• Silicon Laboratories Integrated Development Environment (IDE)

• Keil 8051 Development Tools (macro assembler, linker, evaluation ‘C’ compiler)

• Source code examples and register definition files

• Documentation

• C8051F04x Development Kit User’s Guide (this document)

• Two AC to DC Power Adapters

• CAN Cable (DB-9 connectors)

• USB Debug Adapter (USB to Debug Interface)

• USB Cable

2. 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 1.

1. Connect the USB Debug Adapter to the JTAG connector on the target board with the 10-pin ribbon cable.

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

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

4. Connect the ac/dc power adapter to power jack P1 on the target board.

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 1. Hardware Setup using a USB Debug Adapter

USB

Cable

USB Debug Adapter

AC/DC

Adapter

Target Board

SILICON LABORATORIES

PWR

P1.6

P3.7RESET

Port 4Port 3Port 1

Port 2 Port 0

MCU

Silicon Laboratories

USB DEBUG ADAPTER

Run

StopPower

C8051F04x-DK

2 Rev. 0.6

3. Software Setup

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 auto-

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

tion 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 readme.txt file on the CD-ROM for the latest information regarding

known IDE problems and restrictions.

4. Silicon Laboratories Integrated Development Environment

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

mer. The use of third-party compilers and assemblers is also supported. This development kit includes the Keil

Software A51 macro assembler, BL51 linker and evaluation version C51 ‘C’ compiler. These tools can be used

from within the Silicon Laboratories IDE.

4.1. System Requirements

The Silicon Laboratories IDE requirements:

• Pentium-class host PC running Microsoft Windows 98SE or later.

• One available COM or USB port.

• 64 MB RAM and 40 MB free HD space recommended.

4.2. Assembler and Linker

A full-version Keil A51 macro assembler and BL51 banking linker are included with the development kit and are

installed during IDE installation. The complete assembler and linker reference manual can be found under the Help

menu in the IDE or in the “SiLabs\MCU\hlp” directory (A51.pdf).

4.3. Evaluation C51 ‘C’ Compiler

An evaluation version of the Keil C51 ‘C’ compiler is included with the development kit and is installed during IDE

installation. The evaluation version of the C51 compiler is the same as the full professional version except code

size is limited to 4 kB and the floating point library is not included. The C51 compiler reference manual can be

found under the Help menu in the IDE or in the “SiLabs\MCU\hlp” directory (C51.pdf).

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

To perform source-level debugging with the IDE, you must configure the Keil 8051 tools to generate an absolute

object file in the OMF-51 format with object extensions and debug records enabled. You may 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 Applications Note

AN104 -

Integrating

Keil 8051 Tools Into the Silicon Laboratories IDE

in the “SiLabs\MCU\Documentation\Appnotes” 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 the program 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.)

C8051F04x-DK

Rev. 0.6 3

4.4.1. 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 rec-

ognized 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.

Note:

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.

4.4.2. 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.

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.

C8051F04x

family devices use the JTAG 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 con-

nect/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.

C8051F04x-DK

4 Rev. 0.6

5. Example Source Code

Example source code and register definition files are provided in the “SiLabs\MCU\Examples\

C8051F04x

” directory

during IDE installation. These files may be used as a template for code development. Example applications include

a blinking LED example which configures the green LED on the target board to blink at a fixed rate. A

Controller

Area Network (CAN)

application example is also included with the C8051F

x development kit.

5.1. Register Definition Files

status bits. They are installed into the “SiLabs\MCU\Examples\C8051F04x” directory during IDE installation. The

also installed in the default search path used by the Keil Software 8051 tools. Therefore, when using the Keil 8051

tools included with the development kit (A51, C51), it is not necessary to copy a register definition file to each

project’s file directory.

5.2. Blinking LED Example

The example source files blink.asm and blinky.c show examples of several basic C8051F04x functions. These

include; disabling the watchdog timer (WDT), configuring the Port I/O crossbar, configuring a timer for an interrupt

routine, initializing the system clock, and configuring a GPIO port. When compiled/assembled and linked this pro-

gram flashes the green LED on the C8051F040 target board about five times a second using the interrupt handler

with a C8051F040 timer.

C8051F04x-DK

Rev. 0.6 5

5.3. Controller Area Network (CAN) Application Example

Configuration and use of the CAN controller is documented in the Bosch CAN User’s Guide, located in the “Documen-

tation” directory on the CD-ROM. Accessing the CAN controller (i.e., accessing the CAN RAM, CAN registers, and

moving data to and from the CAN controller) is documented in Silicon Laboratories’ C8051F04x data sheet.

An example CAN application is included in the “Examples\C8051F04x” directory. Each C8051F040 target board fea-

tures a push button (labeled P3.7) and a LED (labeled P1.6). After the two target boards are connected together via

the provided CAN bus physical layer (i.e. cable, connectors, and CAN transceiver), the example application sends

CAN messages between the two target boards containing the state of the push buttons. In this example, each CAN

controller has two of the 32 message objects configured: one to send a control signal based on the state of its target

board push button, and one to receive a control signal from the other target to see if it should turn on/off its own LED.

When a target board receives a message that the push button on the other target board is depressed, it lights its own

LED. When a target board receives a message that the push button on the other target board is not depressed, it

turns off its own LED. In this way, the push button on one target board controls the LED on the other target board as

a virtual control link via a CAN bus.

5.3.1. Setting-up the Application

1. Connect the target boards together at the CAN DB-9 connectors using the CAN cable provided in the

development kit, as shown in Figure 2 on page 6. The correct cable has a male connector on both ends.

Take care not to connect the CAN cable to the RS232 DB-9 connector. See Figure 3 on page 7 for the

location of the CAN DB-9 connector.

2. Compile and link the can1.c example located in the “Examples\C8051F04x” directory on the CD-ROM.

Choose one of the target boards as Target Board #1. Connect to Target Board #1 and download the can1

project to the C8051F040, following the steps outlined in Section 4.4 on page 2. Once downloaded, close

this project in the IDE and disconnect the Debug Adapter from Target Board #1.

3. Connect the Debug Adapter to the other target board, Target Board #2. Open a new project in the IDE and

load can2.c into the C8051F040 device, just as was done in step 2 for Target Board #1. Take care not to

load can1.c into both devices. Disconnect the Debug Adapter from this board.

You should now have can1.c loaded into Target Board #1, and can2.c loaded into Target Board #2. The CAN cable

should be connected to both boards at the CAN DB-9 connectors.

5.3.2. Running the Application

1. Start the application by resetting the device on each target board. Do this by depressing the RESET push

button on each target board. As can1.c executes on Target Board #1, and can2.c runs on Target Board #2,

the devices are now nodes on a CAN bus.

2. Pressing the P3.7 push button on Target Board #1 will light the LED on Target Board #2. Likewise, when

the push button on Target Board #1 is released, the LED on Target Board #2 will turn off. This will work on

either target board.

Once this example is running, you have established a simple CAN network with two nodes. When one C8051F040

device senses the push button on its target board is pressed, it sends a “0x11” in the first byte of a CAN message

data field. When the button is released, the first byte of the CAN message data field is “0x00”. When a C8051F040

device receives a message, it checks whether this byte has a value of “0x11” or “0x00”. When the byte is “0x11”,

the device turns on its LED by setting P1.6 high. When the byte is “0x00”, the device turns off its LED by setting

P1.6 low.

C8051F04x-DK

6 Rev. 0.6

You may run the example with the Debug Adapter connected to view CAN registers, and CAN message objects in

CAN RAM. While connected to one target board, run the code. Depress the RESET button on the other target

board. You may use debug and view features of the Silicon Laboratories IDE and on-chip debug logic. To view the

CAN SFRs, click View→Debug Windows→SFRs→CAN0. To view message objects in CAN RAM, click

View→Debug Windows→CAN0 Message Registers. To view SFRs and message registers, the device must be

in a halt state to update the debug view windows.

Important Note: To view a Message Object in the CAN Message Registers window, you must set its Message Valid

bit to 1 in the Message Object's associated Message Arbitration 2 Register (Bit 15, ARBT2). This can be done in

code by configuring the IF1 and IF2 registers to set the associated Message Objects’ ARBT2 register. A second

method to set this bit is available while viewing the Message Object registers in the IDE CAN0 Message Registers

view. Click on, and change, the associated Message Objects’ ARBT2 register directly. Working in the background

the IDE will set the register for you via the IF1 and IF2 registers.

Figure 2. CAN Application Hardware Setup

Serial or USB Port

Debug

Adapter

Ribbon

Cable Target

Board

CAN

JTAG

RS232

Target

Board

AC/DC

Adapter

RS232

JTAG

CAN

Serial or USB

Cable

Serial

Cable

AC/DC

Adapter

C8051F04x-DK

Rev. 0.6 7

6. Target Board

The

C8051F04x

Development Kit includes a target board with a

C8051F040

device pre-installed for evaluation and

preliminary software development. Numerous input/output (I/O) connections are provided to facilitate prototyping

using the target board. Refer to

Figure 3

for the locations of the various I/O connectors.

P1 Power connector (accepts input from 7 to 15 VDC unregulated power adapter)

J1 Connects SW2 to P3.7 pin

J3 Connects LED D3 to P1.6 pin

J4 JTAG connector for Debug Adapter interface

J5 DB-9 connector for UART0 RS232 interface

J6 Connector for UART0 TX (P0.0)

J8 Connector for UART0 RTS (P4.0)

J9 Connector for UART0 RX (P0.1)

J10 Connector for UART0 CTS (P4.1)

J11 Analog loopback connector

J12-J19 Port 0 - 7 connectors

J20 Analog I/O terminal block

J22 VREF connector

J23 VDD Monitor Disable

J24 96-pin Expansion I/O connector

J25 DB-9 connector for CAN interface

Figure 3. C8051F040 Target Board

J24

Port 1

Port 2

Port 3

Port 0

Port 7

Port 6

Port 5

Port 4

Pin 1

J20

JTAG

Pin 1

J25 J5

CAN RS232

RESET P3.7

J10

J23J7

C8051

F04X

J21

J22

Pin 1

Pin 2

J11

Pin 1

Pin 2

P1.6

Pin 1

PWR

C8051F04x-DK

8 Rev. 0.6

6.1. System Clock Sources

The

C8051F040

device installed on the target board features a calibrated programmable internal oscillator which is

enabled as the system clock source on reset. After reset, the internal oscillator operates at a frequency of

3.0625 MHz (±2%) by default but may be configured by software to operate at other frequencies. Therefore, in many

applications an external oscillator is not required. However, an external 22.1184 MHz crystal is installed on the target

board for additional applications. Refer to the

C8051F04x

data sheet for more information on configuring the system

clock source.

6.2. Switches and LEDs

Two switches are provided on the target board. Switch SW1 is connected to the RESET pin of the C8051F040.

Pressing SW1 puts the device into its hardware-reset state. Switch SW2 is connected to the C8051F040’s general

purpose I/O (GPIO) pin through headers. Pressing SW2 generates a logic low signal on the port pin. Remove the

shorting block from the header to disconnect SW2 from the port pins. The port pin signal is also routed to a pin on

the J24 I/O connector. See Table 1 for the port pins and headers corresponding to each switch.

Two LEDs are also provided on the target board. The red LED labeled PWR is used to indicate a power connection

to the target board. The green LED labeled with a port pin name is connected to the C8051F040’s GPIO pin

through headers. Remove the shorting block from the header to disconnect the LED from the port pin. The port pin

signal is also routed to a pin on the J24 I/O connector. See Table 1 for the port pins and headers corresponding to

each LED.

6.3. Target Board JTAG Interface (J4)

The

JTAG

connector (J4) provides access to the

JTAG

pins of the C8051F040. It is used to connect the Serial

Adapter or the USB Debug Adapter to the target board for in-circuit debugging and Flash programming. Table 2

shows the

JTAG

pin definitions.

Table 1. Target Board I/O Descriptions

Description I/O Header

SW1 Reset none

SW2 P3.7 J1

Green LED P1.6 J3

Red LED PWR none

Table 2. JTAG Connector Pin Descriptions

Pin # Description

1 +3VD(+3.3VDC)

2, 3, 9 GND (Ground)

4TCK

5TMS

6TDO

7TDI

8, 10 Not Connected

C8051F04x-DK

Rev. 0.6 9

6.4. Serial Interface (J5)

A RS232 transceiver circuit and DB-9 (J5) connector are provided on the target board to facilitate serial connec-

tions to UART0 of the C8051F040. The TX, RX, RTS and CTS signals of UART0 may be connected to the DB-9

connector and transceiver by installing shorting blocks on headers J6, J8, J9 and J10.

J6 - Install shorting block to connect UART0 TX (P0.0) to transceiver.

J9 - Install shorting block to connect UART0 RX (P0.1) to transceiver.

J8 - Install shorting block to connect UART0 RTS (P4.0) to transceiver.

J10 - Install shorting block to connect UART0 CTS (P4.1) to transceiver.

6.5. Analog I/O (J11, J20)

Several C8051F040 analog signals are routed to the J20 terminal block and the J11 header. The J11 connector

provides the ability to connect DAC0 and DAC1 outputs to several different analog inputs by installing a shorting

block between a DAC output and an analog input on adjacent pins of J11. Refer to Table 3 for J20 terminal block

connections and Table 4 for J11 pin definitions.

Table 3. J20 Terminal Block Pin Descriptions

Pin # Description

1HVAIN+

2HVAIN-

3 HVREF

4DAC1

5AIN0.0

6AIN0.1

7VREF0

8 ADND (Analog Ground)

Table 4. J11 Connector Pin Descriptions

Pin # Description

1AIN0.0

2AIN0.1

3DAC0

4DAC1

5AIN0.2

6AIN0.3

C8051F04x-DK

10 Rev. 0.6

6.6. Controller Area Network (CAN) Interface (J25)

A DB-9 (J25) connector is provided to facilitate serial connections to the CAN interface on the C8051040. In addi-

tion, when a shorting block is installed on header J7, writing a logic 'high' to port pin P4.2 will place the CAN trans-

ceiver in low-current standby mode. Also, resistor R12 may be replaced with a higher value to control the slew rate

of the CAN_H and CAN_L signals. See the TI SN65HVD230 data sheet for further information. Table 5 listes the pin

descriptions for J25.

6.7. PORT I/O Connectors (J12 - J19)

In addition to all port I/O signals being routed to the 96-pin expansion connector, each of the eight parallel ports of

the C8051F040 has its own 10-pin header connector. Each connector provides a pin for the corresponding port

pins 0-7, +3.3VDC and digital ground. Table 6 defines the pins for the port connectors. The same pin-out order is

used for all of the port connectors.

6.8. VDD Monitor Disable (J23)

The VDD Monitor of the C8051F040 may be disabled by moving the shorting block on J23 from pins 1–2 to pins 2–

3, as shown in Figure 4.

Figure 4. VDD Monitor Hardware Setup

Table 5. CAN Connector Pin Descriptions

Pin # Description

2CAN_L

7CAN_H

3, 6 GND (Ground)

1, 4, 5, 8, 9 Not Connected

Table 6. J12- J19 Port Connector Pin Descriptions

Pin # Description

1Pn.0

2Pn.1

3Pn.2

4Pn.3

5Pn.4

6Pn.5

7Pn.6

8Pn.7

9 +3VD(+3.3VDC)

10 GND (Ground)

MONEN

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