Silicon Laboratories C8051F310-TB User manual

C8051F31x-DK

C8051F31XDEVELOPMENT KIT USER’SGUIDE

1. Kit Contents

The C8051F31x Development Kit contains the following items:

• C8051F310 Target Board

• 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

• C8051F31x Development Kit User’s Guide (this document)

• AC to DC Power Adapter

• 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 DEBUG 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

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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 4K bytes 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 Labs 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.)

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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.

C8051F31x

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 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.

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5. Example Source Code

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

C8051F31x

” 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.

5.1. Register Definition Files

status bits. They are installed into the “SiLabs\MCU\Examples\C8051F31x” 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 C8051F31x 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 C8051F310 target board about five times a second using the interrupt handler

with a C8051F310 timer.

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6. Target Board

The

C8051F31x

Development Kit includes a target board with a

C8051F310

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 2 for the locations of the various I/O connectors.

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

J1 34-pin Expansion I/O connector

J3 Port I/O Configuration connector

J4 DEBUG connector for Debug Adapter interface

J5 DB-9 connector for UART0 RS232 interface

J6 Analog I/O terminal block

J7 Low pass filter connector

J8 USB Debug Adapter target board power connector

J9, J10 External crystal enable connectors

Figure 2. C8051F310 Target Board

PWR

Pin 1

Pin 2

DEBUG

Pin 1

Prototype Area

Pin 1

C8051

F31X

Pin 2

Pin 1

Prototyping Area I/O Connection Points

RESET P0.7

P3.3

J10

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6.1. System Clock Sources

The

C8051F310

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, if you wish to operate the C8051F310 device at a fre-

quency not available with the internal oscillator, an external crystal may be used. Refer to the

C8051F31x

data sheet

for more information on configuring the system clock source.

The target board is designed to facilitate the installation of an external crystal. Remove shorting blocks at headers

J9 and J10 and install the crystal at the pads marked Y1. Install a 10 MΩresistor at R9 and install capacitors at

C14 and C15 using values appropriate for the crystal you select. Refer to the C8051F31x data sheet for more infor-

mation on the use of external oscillators.

6.2. Switches and LEDs

Two switches are provided on the target board. Switch SW1 is connected to the RESET pin of the C8051F310.

Pressing SW1 puts the device into its hardware-reset state. Switch SW2 is connected to the C8051F310’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 J1 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 C8051F310’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 J1 I/O connector. See Table 1 for the port pins and headers corresponding to

each LED.

Table 1. Target Board I/O Descriptions

Description I/O Header

SW1 Reset none

SW2 P0.7 J3[3-4]

Green LED P3.3 J3[1-2]

Red LED PWR none

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6.3. Expansion I/O Connector (J1)

The

-pin Expansion I/O connector J1 provides access to all signal pins of the C8051F

0 device. Pins for +3 V,

digital ground and the output of an on-board low-pass filter are also available. A small through-hole prototyping area

is also provided. All I/O signals routed to connector J1 are also routed to through-hole connection points between J1

and the prototyping area (see

Figure 2 on page 5

). Each connection point is labeled indicating the signal available at

the connection point. See Table 2 for a list of pin descriptions for J1.

6.4. Target Board DEBUG Interface (J4)

The

DEBUG

connector (J4) provides access to the

DEBUG

(C2) pins of the C8051F310. 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 3 shows the

DEBUG

pin definitions.

Table 2. J1 Pin Descriptions

Pin # Description Pin # Description Pin # Description

1 +3VD(+3.3VDC) 13 P1.2 25 P2.6

2 PWM Output 14 P1.3 26 P2.7

3 P0.0 15 P1.4 27 P3.0

4 P0.1 16 P1.5 28 P3.1

5 P0.2 17 P1.6 29 P3.2

6 P0.3 18 P1.7 30 P3.3

7 P0.4 19 P2.0 31 P3.4

8 P0.5 20 P2.1 32 /RST (Reset)

9 P0.6 21 P2.2 33 GND (Ground)

10 P0.7 22 P2.3 34 GND (Ground)

11 P1.0 23 P2.4

12 P1.1 24 P2.5

Table 3. DEBUG Connector Pin Descriptions

Pin # Description

1 +3VD(+3.3VDC)

2, 3, 9 GND (Ground)

4C2D

5/RST(Reset)

6P3.0

7C2CK

8 Not Connected

10 USB Power

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6.5. 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 C8051F310. The TX, RX, RTS and CTS signals of UART0 may be connected to the DB-9

connector and transceiver by installing shorting blocks on header J3.

J3[5–6] - Install shorting block to connect UART0 TX (P0.4) to transceiver.

J3[7–8] - Install shorting block to connect UART0 RX (P0.5) to transceiver.

J3[9–10] - Install shorting block to connect UART0 RTS (P3.1) to transceiver.

J3[11–12] - Install shorting block to connect UART0 CTS (P3.2) to transceiver.

6.6. Analog I/O (J6)

Several of the C8051F310 target device’s port pins are connected to the J6 terminal block. Refer to Table 4 for the

J6 terminal block connections. Install a shorting block on J7[2-3] to connect the AIN2.4 input to the P2.4 pin of the

target device.

6.7. USB Debug Adapter Target Board Power Connector (J8)

The USB Debug Adapter includes a connection to provide power to the target board. This connection is routed

from J4[10] to J8[1]. Place a shorting block at header J8[2–3] to power the board directly from an ac/dc power

adapter. Place a shorting block at header J8[1–2] to power the board from the USB Debug Adapter. Please note

that the second option is not supported with either the EC1 or EC2 Serial Adapters.

6.8. Low-pass Filter (J7)

The C8051F310 target board features a low-pass filter that may be connected to port pin P2.4. Install a shorting

block on J7[1–2] to connect the P2.4 pin of the target device to the low-pass filter input. The output of the low-pass

filter is routed to the PWM signal at J1[2]. The C8051F310 may be programmed to generate a PWM (Pulse-Width

Modulated) waveform which is then input to the low-pass filter to implement a user-controlled PWM digital-to-ana-

log converter. Refer to Applications Note “AN107: Implementing 16-Bit PWM Using the PCA” in the “documenta-

tion” directory on the CD-ROM for a discussion on generating a programmable dc voltage level with a PWM

waveform and low-pass filter.

Table 4. J6 Terminal Block Pin Descriptions

Pin # Description

1 P2.5 / AIN2.5

2AIN2.4

3 GND (Ground)

4 P0.0 / Vref (Voltage Reference)

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7. Schematic

Figure 3. C8051F310 Target Board Schematic

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DOCUMENT CHANGE LIST

Revision 0.4 to Revision 0.5

Section 1, added USB Debug Adapter and USB Cable.

Section 2, changed name from "Hardware Setup" to "Hardware Setup using an EC2 Serial Adapter".

Section 2, added 2 Notes bullets.

Section 2, removed Note from bottom of page.

Added Section 3, "Hardware Setup using a USB Debug Adapter".

Section 5.4.2, changed step 2 to include new instructions.

Section 7, J4, changed "Serial Adapter" to "Debug Adapter".

Target Board DEBUG Interface Section, added USB Debug Adapter.

DEBUG Connector Pin Descriptions Table, changed pin 4 to C2D.

Changed "jumper" to "header".

EC2 Serial Adapter section, added EC2 to the section title, table title and figure title.

EC2 Serial Adapter section, changed "JTAG" to "DEBUG".

Added "USB Debug Adapter" section.

Section 7, J8, changed "Serial Adapter" to "USB Debug Adapter".

DEBUG Connector Pin Descriptions Table, changed pin 10 to USB Power.

USB Debug Adapter Target Board Power Connector (J8) Section, changed "Serial" to "USB Debug".

Revision 0.5 to Revision 0.6

Removed EC2 Serial Adapter from Kit Contents.

Removed Section 2. Hardware Setup using an EC2 Serial Adapter. See RS232 Serial Adapter (EC2) User's

Guide.

Removed Section 8. EC2 Serial Adapter. See RS232 Serial Adapter (EC2) User's Guide.

Removed Section 9. USB Debug Adapter. See USB Debug Adapter User's Guide.

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