Datasheet> 器件分类 > 开发板/开发套件/开发工具> SAM9-L9261

SAM9-L9261: 产品描述Development Boards & Kits - ARM DEV BRD FOR AT91SAM9260; 产品类别开发板/开发套件/开发工具; 文件大小2MB，共15页; 制造商Olimex Ltd.; 标准

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SAM9-L9261概述

Development Boards & Kits - ARM DEV BRD FOR AT91SAM9260

SAM9-L9261规格参数

参数名称	属性值
Product Attribute	Attribute Value
制造商 Manufacturer	Olimex Ltd.
产品种类 Product Category	Development Boards & Kits - ARM
RoHS	Details
产品 Product	Development Boards
Core	ARM926EJ-S
工具用于评估 Tool Is For Evaluation Of	AT91SAM9260
Dimensions	100 mm x 80 mm
接口类型 Interface Type	Ethernet, JTAG, RS-232, USB
Data Bus Width	32 bit
用于 For Use With	AT91SAM9260
工作电源电压 Operating Supply Voltage	5 V
工厂包装数量 Factory Pack Quantity	1

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SAM9-L9261

User Manual

All boards produced by Olimex are ROHS compliant

Rev.C, September 2009

INTRODUCTION:

SAM9-L9261

is a development platform with ARM9 microcontroller, TFT

LCD 3.5" 320x240 pixels with TOUCHSCREEN, 64MB SDRAM and 512MB

NAND Flash. The board has Ethernet 100Mbit controller, USB host, USB

device, RS232 and 20 pin extension port with unused SAM9261 GPIO ports

available for add-on boards. SAM9-L9261 has waste amount of Flash and

RAM and runs a 2.6.27.4 Linux. RTC clock is backed up with 3V Li battery.

FEATURES:

MCU: AT91SAM9261 16/32 bit ARM9™ 200MHz operation.

Standard JTAG connector with ARM 2x10 pin layout for programming/

debugging with ARM-JTAG.

TFT LCD 3.5" 320x240 pixels with TOUCH SCREEN supported by Linux

framebuffer and tslib, respectively.

64 MB SDRAM.

2MB Dataflash used to store bootloaders and the Linux kernel.

512MB NAND Flash (seen in Linux as silicon MTD drive).

Ethernet 100Mbit connector with Linux driver.

Two USB host connectors supported by Linux.

USB device connector supported by the Linux Gadget driver.

RS232 interface and drivers.

SD/MMC/Dataflash card connector (see notes in the manual).

AT73C213 stereo DAC with Linux ALSA drivers.

Ten GPIOs accessible from Linux user-space applications.

Four user buttons accessible from Linux user-space applications.

One reset button

Three status LEDs.

RTC supported by Linux and with a battery backup option.

On board voltage regulator 3.3V with up to 800mA current.

Single power supply:

regulated

5V DC required.

Power supply filtering capacitor.

18.432 Mhz crystal.

PCB: FR-4, 1.5 mm (0,062"), soldermask, silkscreen component print.

Dimensions: 100 x 80 mm (3.94 x 3.15").

ELECTROSTATIC WARNING:

The SAM9-L9261 board is shipped in protective anti-static packaging. The

board must not be subject to high electrostatic potentials. General practice

for working with static sensitive devices should be applied when working

with this board.

REQUIREMENTS:

Cables:

−

1.8 meter USB A-B cable (needed for restoring the installation).

−

NULL-modem RS232 cable (needed for the Linux console).

−

UTP LAN cable (needed for connecting SAM9-L9261 to Internet).

Power Supply:

Regulated 5V DC power supply, capable of supplying at least 1A.

SCHEMATIC

GETTING STARTED

Connect a null-modem cable to the board and make sure the RS232

jumpers are in the DRXD and DTXD positions. Start a terminal emulation

program and set it for 115200 bps, 8 bits, no parity, 1 stop bit. Plug a

regulated 5V DC power supply to power up the board. You will see the

bootloaders' and kernel's startup messages. Please be patient - booting can

take a couple of minutes, especially on the first boot. Login as root.

Password is not needed.

NOTE:

By default the root account

does not have a password. This will

to create a password run as root the

passwd

The root account in the Debian

“olimex”.

in the Angstrom root filesystem image

prevent remote logins via ssh. In order

following command:

root filesystem image has password

TOOLCHAIN

The sources for the bootloaders and the Linux kernel must be compiled

under Linux PC host. We don't intend to support Cygwin.

The projects were compiled using Codesourcery G++ lite 2009q1, freely

available from

http://www.codesourcery.com

. A convenience tarball

is provided that contains the Codesourcery binaries along with some useful

shell scripts. This tarball must be extracted in user's home directory.

Example:

cd $HOME

# tar xjf codesourcery-toolchain-2009q1-repack.tar.bz2

The latter will create a directory

$HOME/bin/codesourcery-armgcc-2009q1

along with some shell scripts that must be sourced before compilation:

# source

$HOME/bin/linux_cross_compile.sourceme

# source $HOME/bin/bootloader_cross_compile.sourceme

BOOT LOADERS

The SAM9-L9261 board requires a three-stage boot loader before booting

the Linux kernel.

RomBOOT

(internal ROM)

at91bootstrap ->

(dataflash)

u-boot ->

(dataflash)

Linux kernel

(dataflash)

The typical operation of each boot loader is to load the next stage program

into SDRAM and then execute a JUMP to its start address.

AT91BOOTSTRAP

Version 2.4 of at91bootstrap has been used, along with minor modifications

to add support for the SAM9-L9261 board. To compile from source:

Extract the sources:

tar xjf at91bootstrap-2.4-olimex.tar.bz2

cd at91bootstrap-2.4-olimex

Setup the environment:

source $HOME/bin/bootloader_cross_compile.sourceme

Configure at91bootstrap for SAM9-L9261

make sam9_l9261_defconfig

Compile:

make

The resulting binary is created in:

binaries/sam9_l9261-dataflashboot-2.4.bin

WARNING:

Due to AT91SAM9261 chip errata booting from NAND flash is

not supported.

U-BOOT

The used U-Boot is a GIT pull from June 11 2009, along with minor

modifications to add support for SAM9-L9261. In order to compile from

sources:

Extract the sources:

tar xjf u-boot-git20090611-olimex.tar.bz2

cd u-boot

Setup the environment:

source $HOME/bin/bootloader_cross_compile.sourceme

Configure at91bootstrap for SAM9-L9261:

make sam9_l9261_config

Compile:

make

The resulting binary is created in the main sources directory:

./u-boot.bin

WARNING:

The needed image is "u-boot.bin". The "u-boot" file is an ELF file

that cannot be directly written into dataflash!

LINUX KERNEL

The used kernel is a mainstream 2.6.30 slightly modified to include support

for the SAM9-L9261 board. As with the bootloaders, the modifications were

based on the source files for Atmel's AT91SAM9261EK board.

In order to compile the kernel its sources must be extracted first:

tar xjf linux-2.6.30-olimex.tar.bz2

Then setup the needed environment variables:

source $HOME/bin/linux_cross_compile.sourceme

Go to the source directory:

cd linux-2.6

Load the default configuration for the SAM9-L9261 board:

make sam9_l9261_defconfig

Optionally, you can tweak the kernel compile-time configuration:

make xconfig

And finally you can compile it:

make uImage

If compilation is successful, the resulting kernel image can be found in:

linux-2.6/arch/arm/boot/uImage

NOTE:

The

linux-2.6.30-olimex.tar.bz2

archive is pre-patched and ready for

compilation. The file

linux-2.6.30-olimex-patches.tar.bz2,

found in the

src

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