Difference between revisions of "Flameman/proof"

From eLinux.org
Jump to: navigation, search
(core 405 vs core 440)
(coldfire emulator)
Line 1: Line 1:
 
For more interesting projects done by Flameman, be sure to checkout his [[Flameman#master_index|project index]]
 
For more interesting projects done by Flameman, be sure to checkout his [[Flameman#master_index|project index]]
 
= coldfire emulator =
 
http://www.slicer.ca/coldfire/
 
(it has a bug, it does not work on bigendian host)
 
 
  
 
= gentoo wiki =
 
= gentoo wiki =

Revision as of 04:15, 10 July 2020

For more interesting projects done by Flameman, be sure to checkout his project index

gentoo wiki

Gentoo Wiki

electronic

encoder

  • HP Agilent HEDS-5500 C11 Optical Encoder


walnut/NFS&C

i' am on a ppc machine (*walnut), equipped with IBM-405GP (~ppc603/4 core) the firmware (uboot) make me able to tftpboot only <6Mb of kernel+ramrootfs

i'd like to prepare a ~ NAS (network attached storage), i mean i'd like to have a remote "embedded machine" with software raid 1 in/from where mount a remote filesystem

now, suppose that you want to mount a filesystem on a remote computer sitting somewhere on the internet. There are two standard ways to do this

  • NFS (Network FileSystem) - the standard UN*X way
  • Samba (SMB/CIFS/Microsoft Windows Networking)



NFS is nice: it's fast, it's standard, it roxs Unfortunately, there are drawbacks to NFS, at least as far as I can tell:

1) You will need FULL access to both systems in order to configure them to use NFS - this means that you will need to be root on both systems

2) Both systems need to be able to talk to each other directly without being impeded by firewalls, gateways

3) I have experienced machine crashing when one side of the link goes down. In other words, if one machine is expecting the other machine to be there, and it isn't... BOOM... good luck regaining control. Note that this happens to me whether I use so-called "hard" or "soft" mount options.

4) Neither NFS nor Samba is particulary secure. I would never dare set up a share without being behind a firewall. Even then I'm a bit scared.


about The alternative ? sshFS, a filesystem client based on the SSH File Transfer Protocol.

OK, it a user space fs, but since most SSH servers already support this protocol it is very easy to set up:

  • on the server side there's nothing to do.
  • on the client side mounting the filesystem is as easy as logging into the server with ssh


on the server side, NFS is depending of portmap, which is issuing "segmentation fault" on uclibc-profile

other bad things happen trying to compile with uclibc

[net-fs/nfs-utils] issues not compiling cause net-fs/nfs-utils-1.1.6/

  • utils/statd/stat.c: #include "myglibc-missing-functions.c"
  • utils/mountd/cache.c: #include "myglibc-missing-functions.c"

that happens cause in the uc-pofile the glibc has been replaced by uclibc which is missing of

  • getgrouplist()
  • getrpcent_r()
  • int getrpcbyname_r()
  • int getrpcbynumber_r()

bugged binaries (cause of the missing functions of uclibc):

  • utils/mountd/mountd
  • utils/statd/sm-notify
  • utils/statd/statd


[sys-fs/sshfs-fuse] is claiming, too !

  • No package 'glib-2.0' found
  • No package 'gthread-2.0' found


but you do not use it on the server side ! what you only need is /usr/sbin/sshd !!!


NFS

sshFS

LAN chip CS8900A from Cirrus logic, IP Dragon II

The IP Dragon II is our second generation ethernet interface module based on the popular ethernet controller CS8900A from Cirrus logic.

The IP Dragon II is fully equiped to give any 8 or 16-bit system full ethernet capability. It features a selectable 8-bit or 16-bit databus interface, chip select and read/write signals. The board has two rows (2 x 15) of pins making it very easy to mount in an experiment system or a production system. The RJ-45 connector integrates both the inductor and two LED's that shows the link activity.

With this module your are ready to start implementing ethernet and internet communication on your embedded system in no time. Drivers for various TCP/IP stacks can be found on our download page.

General Information:

The IP Dragon is equiped with the Cirrus Logic embedded ethernet controller CS8900A. This ethernet controller is a flexible and powerful controller that can be used for embedded applications. Many other controllers on the market is targeted to the PCI bus and PC's making them very complex if not impossible to adapt to a low cost embedded system.

The module should connect to an MCU or CPU as a standard memory with the 8 or 16 -bit databus, IOR, IOW and CS signal. The module also supports interrupts in 16-bit mode.

A small serial EEPROM connected to the controller can be used to store the ethernet address and other controller related data. The EEPROM is only supported in 16-bit mode.

  • 8 or 16 -bit databus is easily selected by moving a jumper.
  • Measurements: 34mm x 50mm
  • Supply Voltage (IET8905E): 5V
  • Supply Voltage (IET8903E): 3.3V

opernWRT board

sony psx3

source released

AR7 DSL-G604T

The DSL-G604T looks like DLS-504T and also provides an 802.11g/802.11b WiFi connectivity.

  • CPU: Texas Instrument TNETD7300GDU AR7W MIPS 4KEc based SoC with built-in ADSL and Ethernet interfaces
  • SDRAM Memory: 16Mb Hynix HY57V281620HCT
  • Flash Memory: 4Mb SquashFS file system. Atmel AT49BV322A
  • DSP-based ADSL
  • WiFi: TI ACX-111 AirPlusG+ card (VLYNQ)
  • Ethernet: IP175A 5-port Ethernet hub (1 internal, 4 external)


net chip IP175A

IP175A is a low cost 10/100 Ethernet single chip switch. It integrates a 5-port switch controller, SSRAM, and 5 10/100 Ethernet transceivers. Each of the transceivers complies with the IEEE802.3, IEEE802.3u, and IEEE802.3x specifications. The transceivers are designed in DSP approach with 0.25um technology; they have high noise immunity and robust performance.

IP175A operates in store and forward mode. It supports flow control, auto MDI/MDI-X, CoS, port base VLAN, and LED functions, etc. Each port can be configured to auto-negotiation or forced 10M/100M, full/half duplex, and it is also able to configure to 100BaseFX transmission mode. Using an EEPROM or pull up/down resistors on specified pins can configure the desired options. IP175A does not support "forced 10M half mode".

IP175A supports two MII ports for router application, which supports 4 LAN ports and one WAN port. MII0 is for LAN traffic and MII1 is for WAN traffic and no external PHY is needed. Both MII can work in PHY mode and interface to the external MAC in this application. The external MAC can monitor or configure IP175A by accessing MII registers through SMI. An app from mspy.com works the same way and help one monitor any phone.

MII0 also can be configured to be MAC mode. It is used to interface an external PHY to work as a 4+1 switch.

Feature :

  • 5 port 10/100 Ethernet switch with built in transceivers and memory
  • Build in SSRAM for frame buffer
  • Built in storage of 1K MAC address
  • Support flow control
  • Support IEEE802.3x for flow control for full duplex mode operation
  • Support backpressure for flow control for half duplex mode operation
  • 5 port switching fabric
  • Support two-level hashing algorithm to solve MAC address collision
  • Support MAC address aging
  • Store and forward mode
  • Broadcast storm protection
  • Full line speed capability of 148800 (14880) packets/sec for 100M (10M)
  • Support 1536 byte data transfer for VLAN packet traffic
  • Port base VLAN
  • Port base CoS configuration
  • Integrate 5 ports transceiver
  • Each port can be auto negotiable or forced 10M/100M, full/half duplex
  • Each port can be configured as 100BaseFX
  • Automatic MDI/MDI-X configuration
  • Support tow MII, one SMI and extended MII registers for router application
  • Built in regulator for 3.3v to 2.15v
  • LED status of Link, activity, full/half duplex, speed, and power on diagnostic function
  • Initial parameter setting by pin or EEPROM (24LC01) configuration
  • Utilize single clock source (25Mhz)
  • 0.25u technology
  • Support Lead Free package (Please refer to the Order Information)

Firmware

ADAM2

uart

5-pin connector, attached to UART_A

1 RX 
2 GND 
3 +3.3V 
4 GND 
5 TX 

jtag

MIPS EJTAG, EJTAG 2.6 header
pin numbering is wrong, need to be verified

1 TRST
2 TDI
3 TDO
4 TMS
5 TCK
6 RST
7 DINIT

8 +3v (VIO)
9 -
10 GND
11 GND
12 GND
13 GND
14 GND
DSP JTAG (JP3)
pin numbering is wrong, need to be verified

1 - TMS
2 - TDI
3 - VCC (3.3V)
4 - TDO
5 - TCK
6 - TCK_RET
7 - EMU0

8 - TRST
9 - GND
10 - -key
11 - GND
12 - GND
13 - GND
14 - EMU1

mips by TI, the AR7

The Texas Instrument AR7 is the fully integrated single-chip ADSL CPE access router solution. The AR7 combines a MIPS32 processor, a DSP-based digital transceiver, and an ADSL analog front end.

Features:

  • Integrated high performance MIPS 4KEc 32-Bit RISC processor
  • ADSL PHY subsystem based on TI C62x DSP, with integrated transceiver, codec, line driver, and line receiver
  • Hardware accelerated ATM SAR
  • Integrated IEEE 802.3 PHY
  • Two IEEE 802.3 MACs with integrated Media Independent Interface (MII) and Quality of Service (QoS)
  • Integrated USB 1.1 compliant transceiver (slave only?)
  • Two VLYNQ interfaces for compatible high-speed expansion devices
  • Two 16c550 compatible UARTs
  • EJTAG, GPIO and FSER interfaces
  • 4Kb PROM (0xBFC00000) and 4Kb RAM (0x80000000) on the chip for boot purposes
  • 324 BGA with 1.0-mm ball pitch

Options:

  • AR7DB
  • AR7RD
  • AR7WRD (TNETD7300GDU) is an AR7 option with a interface for WiFi card.
  • AR7VWI : DSL + VoIP + Wireless
  • AR7VW
  • AR7WI
  • AR7V : DSL + VoIP

TI does not provide detailed technical documentation for this SoC. Some details are known from the GPL-ed Linux sources.

Another source is a TI OMAP and DaVinci documentation. It seems, AR7 SoC peripherials is very close to the OMAP16xx and OMAP730 application processors , but MIPS instead ARM9-based. Source Code

The "GPL source code" as provided by the various vendors of TI AR7 (with linux) devices is incomplete, since TI apparently refuses to publish the source code to some of their core kernel modifications, such as LZMA (de)compression of the zImage. The gpl-violations.org project is actively trying to resolve this issue.

If you go through the GPL releases for AR7 devices by different vendors, you can find all the sources for the AR7 board. Here's a list:

Network driver 	In almost every vendor GPL release 	
DSL driver 	Netgear DG834(G) V1.0.5 	Hidden in patch-knl file
Wifi driver 	Linksys WAG54G v2 1.00.19-UK 	src/router/ti_ap/AP-DK5.7.0.4.tar.gz
USB driver 	Netgear DG834(G) V1.0.5 	Hidden in patch-knl file
Unknown status 	Actiontec GPL source code 	http://opensource.actiontec.com/

IRC

There is a specifically targeted #ar7 irc channel on Freenode where those devoted to hacking ar7 based architecture go to hang out. Memory map

AR7 family deploys unusual memory map. The AR7 chip has a small memory banks on the chip : 4Kb PROM (@0xBFC00000) and 4Kb RAM (@0x80000000) and memory block for the DSP (@unknown). The rest of the external memory banks are selectable with CS0..4. The FLASH is located at 0x90000000 (CS0) and RAM is located at 0x94000000 (CS1). Linux should define a non-contiguous memory and install an IRQ trampolines at the MIPS interrupt vectors. C62x DSP

TI TMS320C62x is a fixed-point Digital Signal Processor core. C62x is based on the VelociTI VLIW architecture developed by TI. C62x is a member of the TI C6000 family.

  • Notes on Texas Instruments Processors
  • Open Source TMS320C6x Development Tools
  • Free DSP Compiler Available

VLYNQ

TI's VLYNQ is a low power, low pin-count serial communication interface that enables the extension of an internal bus segment to one or more external physical devices. The external devices are mapped into local, physical address space and appears as if they are on the internal bus. The external device must have a VLYNQ interface. The VLYNQ module serializes bus transactions in one device, transfers the serialized data via a VLYNQ port, and de-serializes the transaction in the external device. The VLYNQ interface is described in the following TI documents:

  • SPRU768 - OMAP5912 Multimedia processor VLYNQ Serial Communications Interface Reference Guide
  • SPRUE36 - TMS320DM644x DMSoC VLYNQ Port. User's guide.

Emulation

QEMU with additional patches supports emulation of AR7 and some of its most important devices (serial ports, ethernet). It also includes a flash emulation and can run firmware of typical AR7 based DSL routers.

technology, varia

ita.blog http://www.appuntidigitali.it/

68hc11, 68000, hw/sw, varia, blog

http://learn-mot.blogspot.com/

i2c spi

board

??? linux/macOSX only binary http://www.totalphase.com/products/

http://www.i2cchip.com/

$120 linux/macOSX sources http://www.nanorivertech.com/miniboard

CAN bus

doc

http://www.datajob.com/corso/can/Default.aspx

alcune codifiche numeriche

Manchester

Nelle telecomunicazioni la codifica Manchester è una forma di comunicazione dati nella quale ogni bit viene segnalato da una transizione. La codifica Manchester è considerata una codifica self-clocking, il che significa che permette un'accurata sincronizzazione del flusso dati. Ogni bit viene trasmesso in un intervallo di tempo di bit predefinito.

La codifica Manchester fornisce un modo semplice per codificare sequenze binarie arbitrarie senza mai aver lunghi periodi di tempo privi di transizioni di clock, il che permette di prevenire la perdita della sincronizzazione del clock, oppure errori di bit causati da derive in bassa frequenza su collegamenti analogici poco equalizzati (vedi ones-density). Se trasmesso come segnale AC assicura che la componente DC del segnale codificato sia zero, prevenendo derive del livello di base del segnale ripetuto, e rendendolo facile da rigenerare. Comunque oggi esistono molte codifiche più sofisticate che ottengono lo stesso risultato con minore sovraccarico di banda, e meno ambiguità di sincronizzazione nei casi patologici (vedi sotto).

Uno degli utilizzi più noti della codifica Manchester è sui segnali elettrici nelle reti locali Ethernet.

Codifica Manchester come caso di Phase Shift Keying Binaria (BPSK)

La codifica Manchester si può considerare come un caso speciale della Phase Shift Keying Binaria (BPSK), in cui il dato da trasmettere controlla la fase di un'onda quadra portante alla frequenza della velocità di trasmissione dati. Perciò è estremamente facile generare tale segnale in modo digitale.

Per controllare la quantità di banda consumata, si può impiegare un filtro per ridurre la banda fino ad 1 Hz per bit/secondo, senza perdere informazione durante la trasmissione. Comunque, per praticità (e per controllare al meglio la banda passante, specialmente su spettri radio affollati), la maggior parte dei modulatori BPSK scelgono una frequenza di portante molto superiore alla frequenza di trasmissione dati, ottenendo larghezze di banda più strette e facili da filtrare. La proprietà dell'1 Hz/bit/secondo è comunque mantenuta.

Convenzioni per la rappresentazione dei dati [modifica]

Ci sono due convenzioni opposte per la rappresentazione dei dati.

La prima fu inizialmente pubblicata da G. E. Thomas nel 1949 ed è seguita da numerosi autori (ad es. Tanenbaum). Specifica che per un bit 0 i livelli di segnale saranno Basso-Alto (assumendo una codifica dei dati con l'ampiezza) - con un livello basso nella prima parte del periodo di bit, ed un livello alto nella seconda parte. Per un bit 1 i livelli di segnale saranno Alto-Basso.

Anche la seconda convenzione è seguita da molti autori (ad es. Stallings) come pure dallo standard IEEE 802.4. Stabilisce che uno 0 logico sia rappresentato da una sequenza di segnale Alto-Basso ed un 1 logico da una sequenza di segnale Basso-Alto.

Una conseguenza della transizione per ciascun bit è che la necessità di larghezza di banda per segnali codificati Manchester è doppia in confronto ad una comunicazione asincrona, e che lo spettro del segnale è considerevolmente più ampio. Nonostante la codifica Manchester sia una forma di comunicazione altamente affidabile, il requisito della larghezza di banda è visto come uno svantaggio, e le comunicazioni più moderne avvengono con protocolli con codici più moderni che ottengono gli stessi risultati con una codifica più rapida ed una richiesta di larghezza di banda minore.

Una peculiarità della codifica Manchester è la sincronizzazione del ricevitore col trasmettitore. A prima vista potrebbe sembrare che un errore di mezzo periodo di bit porterebbe ad una decodifica invertita dal lato del ricevitore, ma considerazioni ulteriori evidenziano che con alcune sequenze di dati specifiche questo causerebbe la violazione della codifica. L'hardware può rilevare queste violazioni di codifica e di conseguenza sincronizzarsi accuratamente sulla corretta interpretazione dei dati.

Una tecnica correlata è la codifica Manchester differenziale.

Riassumendo:

  • i segnali dei dati e del clock sono combinati per formare un flusso di dati auto-sincronizzante
  • ogni bit codificato contiene una transizione a metà del periodo di bit
  • la direzione della transizione determina se il bit è uno "0" o un "1"
  • la prima metà è il valore vero del bit e la seconda metà è il complemento del valore vero del bit. In contrasto con non ritorno a zero.

tx-rx on uart

byte decode_data(byte encoded)
{
byte i, dec, enc, pattern;
enc=encoded;
if (end==0xf0)
   return 0xf0;
dec=0;
for (i=0;i<4;i++)
    {
    dec >>=1;
    pattern=enc &0b11;
    if (pattern==0b11) //1
       bit_set(dec,3);
    else 
       if (pattern==0b10)
          bit_clear(dec,3); //0
       else
          return 0xff; // illegal code
    enc >>=2;
    }
return dec;
}

void send_data(bytetxbyte)
{
int i,j,b,me;
b=txbyte;
for (i=0;i<2;i++)
    {
    me=0;
    for (j=0; j<4; j++)
        {
        me >>=2;
        if (bit_test(b,0))
           me |= 0b01000000; // 1->0
        else
           me |= 0b10000000; // 0->1
        b>>=1;
        }
    putc(me);
    }
}

La Codifica Manchester differenziale

La Codifica Manchester differenziale è un sistema di rappresentazione di dati, derivato dalla Codifica Manchester, utilizzato soprattutto negli scambi di informazioni tra alcune categorie di reti informatiche. Questo sistema di codifica di dati, come la Manchester, è progettata in modo da sincronizzarsi autonomamente col clock di sistema, in quanto ogni bit viene trasmesso all'interno di un intervallo predefinito. Inoltre durante questo intervallo vi è la presenza di almeno una transizione a metà intervallo, salvo i casi di segnali fuori codifica.

La caratteristica che distingue la codifica Manchester differenziale dalla sua progenitrice è la rappresentazione dei bit: infatti la Manchester differenziale è basata sulla verifica di transizioni all'inizio di un intervallo. La presenza di una di queste, sia essa di tipo alto-basso o basso-alto, identifica un valore, la mancanza di transizione invece (ovvero continuità del segnale) indica il valore opposto. I segnali prodotti sono compresi tra 3 e 4.5 v per il segnale alto e tra -4.5 e -3 v per quello basso.

Per convenzione normalmente il bit 1 viene rappresentato dalla mancanza di transizione all'inizio del suo intervallo, mentre lo 0 è indicato con un cambiamento di segnale nello stesso periodo. Segnali in violazione di questa convenzione sono utilizzabili per informazioni di servizio o per delimitare gruppi di bit. Questo sistema rende la codifica più resistente al rumore rispetto alla Manchester normale, ma in cambio si paga una maggiore complessità degli algoritmi di gestione oltre che dell'hardware.

uart

rs422 rs485, networking

-Hi,
-
-I understand that two devices can communicate over RS422 via two sets of twisted pair cables. 
-what about adding a third device? 
-Can the cable be split so that each of three separate devices can be connected to each other 
-via RS422?
-
-I'm a little unclear with the RS422 network topology description on the web site.

There is a maximum of ten receivers on an RS422 communication line
but only one sender can be connected. 
Therefore RS422 is only useful when one central master sends commands to multiple slaves
but where the slaves don't have to send information back. 
If you want two-way communication between more than two serial devices
you should switch to RS485
as the RS422 network topology is not appropriate for that situation.

rs232 sgi apple cable

minidin8 rs422 rs232 db9
1 HSKo DTR,RTS 4,7
2 HSki CTS 9
3 TX- TX 3
4 gnd,RX+ gnd 5
5 RX- RX 2
6 TX+
7 GPI DCD,DSR 1,6



    8 7 6
    5 4 3
     2 1
soldering view


idea: using minidin8.pin6 for vcc=5V

music

see how mad are jappi http://www.youtube.com/watch?v=eM6nUX57gCg&feature=channel

hex

16=2^4 00010hex
32=2^5 00020hex
64=2^6 00040hex
128=2^7 00080hex
256=2^8 00100hex
512=2^9 00200hex
1k=2^A 00400hex
2k=2^B 00800hex
4k=2^C 01000hex
8k=2^D 02000hex
16k=2^E 04000hex
32k=2^F 08000hex
64k=2^10 10000hex

unix

http://informatica.di.univaq.it/getres.php?resid=575

Hardware hackers in general and robot-makers in particular are pleased by using things in elegant and unusual ways. Hack a day pleases me.

uart

http://www.faqs.org/docs/Linux-HOWTO/Serial-Programming-HOWTO.html

http://www.comptechdoc.org/os/linux/programming/c/linux_pgcserial.html

pic

• M. Predko, "Programming and customizing the PIC microcontroller", Tab Books

• Wilmshurts, "Designing Embedded Systems with PIC Microcontrollers", Newnes

• R. Stevens, "Serial Communications", SquareOne books

• Barnett & O'Cull, "Embedded C Programming and the Microchip PIC", Thomson Delmar

• Del Corso & Galizia, "PIC micro. Progettare con i microcontrollori PIC", Inware Edizioni

• G. Galletti, "PIC Book", Sandit


number

• Forman S. Acton, "Numerical methods that (usually) work", MAA

• Richard Hamming, "Numerical Methods for Scientists and Engineers", Cambridge

• J. Stoer, R. Burlisch, "Introduzione all'Analisi Numerica", Zanichelli

• V. Comincioli, "Analisi Numerica, metodi modelli applicazioni", McGraw-Hill

• V. Comincioli, "Analisi Numerica, complementi e problemi", McGraw-Hill

  • Cavanagh ???

electronics

http://inst.eecs.berkeley.edu/~ee100/fa08/lectures/lectures.html

algorithm

http://web.media.mit.edu/~wad/mas864/proposal.html

robot

http://oap.sourceforge.net/download.php

http://www.pololu.com/catalog/product/425/pictures

http://www.guiott.com/Rino/index.html

motor control http://www.pmdcorp.com/motion-products/

electronic instruments

http://www.almasistemi.net/

GPS

tangogps (gps logging)

gpsdrive (gps logging ?)

  • url ???

navit (navigation)

gps zuaurus/hw

chips

   --- GPIO Support                                                                                     x x
  x x                              [*]   /sys/class/gpio/... (sysfs interface)                                                          x x
  x x                                    *** Memory mapped GPIO expanders: ***                                                          x x
  x x                                    *** I2C GPIO expanders: ***                                                                    x x
  x x                              <*>   MAX7319, MAX7320-7327 I2C Port Expanders                                                       x x
  x x                              < >   PCA953x, PCA955x, TCA64xx, and MAX7310 I/O ports (NEW)                                         x x
  x x                              < >   PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders (NEW)                                 x x
  x x                                    *** PCI GPIO expanders: ***                                                                    x x
  x x                                    *** SPI GPIO expanders: ***                                                                    x x
  x x                              <*>   Maxim MAX7301 GPIO expander                                                                    x x
  x x                              <*>   Microchip MCP23S08 I/O expander    



   < > Dallas DS1682 Total Elapsed Time Recorder with Alarm (NEW)                                       x x
  x x                              < > Philips PCF8574 and PCF8574A (DEPRECATED) (NEW)                                                  x x
  x x                              < > Philips PCF8575 (DEPRECATED) (NEW)                                                               x x
  x x                              < > Philips PCA9539 16-bit I/O port (DEPRECATED) (NEW)                                               x x
  x x                              < > Philips PCF8591 (NEW)                                                                            x x
  x x                              < > Maxim MAX6875 Power supply supervisor (NEW)                                                      x x
  x x                              < > Taos TSL2550 ambient light sensor (NEW)   

sh3.4.5

HP Jornada 690

HP-Jornada-690.jpg

  • CPU: SH7729@ 133 MHz that is SuperHitachiRish-SH-3
  • RAM': 32MB
  • LCD: 6.5" CSTN passive matrix 16-bit (64K colors), 640 x 240 6.5" CSTN passive matrix
  • SIZE: 18.9 cm x 3.4 cm x 9.5 cm, 510 g
  • BUS:
    • PCMCIA slot
    • CF slot
  • MISC:
    • Built in Modem
    • IrDA
    • BATTERY: the average battery run time is about ~ 8 hours


cat /proc/cpuinfo
machine         : HP6xx
processor       : 0
cpu family      : sh3
cpu type        : SH7729
cpu flags       : none
cache type      : unified
cache size      : 16KiB (4-way)
bogomips        : 66.15
master_clk      : 22.11MHz
module_clk      : 22.11MHz
bus_clk         : 132.66MHz
cpu_clk         : 132.66MHz
tmu0_clk        : 5.52MHz

mips

http://en.wikipedia.org/wiki/MIPS_architecture

arm

corso uni http://www.dei.unipd.it/corsi/ae1/web/_index.htm

embedded

tiny http://www.friendlyarm.net/products

poky http://free-opensource.qvantel.net/mediawiki//index.php/LN2440_-_Single_Board_Computer

nice-board with fpga http://www.embeddedarm.com/products/board-detail.php?product=TS-7800#

1. http://code.google.com/p/mini2440/wiki/MiniBringup i used this to know how to connect to the serial console with picocom and i used this for various nand manipulations described in there

2. http://wiki.linuxmce.org/index.php/Mini2440 this site shows howto build u-boot.bin and how to upload it to the device, later on it shows the same to the kernel

3. http://www.gentoo.org/proj/en/base/embedded/handbook/index.xml?part=1&chap=1 here i followed the steps to build a toolchain with the "arm-unknown-linux-gnu" as cross compiler

4. http://www.friendlyarm.de/downloads i used the kernel provided on this site

OMAP Processor families

Per the TI website, the OMAP families are broken into "High Performance", "Basic Multimedia", and "Modem and Applications".

"High performance"

OMAP1

    * OMAP1710 - 220 MHz ARM926TEJ + C55x DSP
    * OMAP1621 - 204 MHz ARM926 + C55x DSP + 2MB Internal SRAM
    * OMAP1612 - 204 MHz ARM926TEJ + C55x DSP
    * OMAP1611 - 204 MHz ARM926EJ-S + C55x DSP
    * OMAP1610 - 204 MHz ARM926EJ-S + C55x DSP
    * OMAP1510 - 168 MHz ARM925T (TI-enhanced) + C55x DSP
    * OMAP5910 - ARM9 + C55x DSP
    * OMAP5912 - ARM9 + C55x DSP

OMAP2

    * OMAP2431 - 330 MHz ARM1136 + 220 MHz C55x DSP
    * OMAP2430 - 330 MHz ARM1136 + 220 MHz C55x DSP + PowerVR MBX lite GPU
    * OMAP2420 - 330 MHz ARM11 + 220 MHz C55x DSP + PowerVR MBX GPU

OMAP3

The OMAP3 is broken into 3 distinct groups: the OMAP34x, the OMAP35x, and the OMAP36x. OMAP35x is a variant of OMAP34x intended for open source development, and the OMAP36x is a 45nm version of the 65nm OMAP34x with higher clock speed.[1]

    * OMAP3640 - 1 GHz ARM Cortex A8 + 430 MHz C64x+ DSP + PowerVR SGX530 GPU + ISP (Image Signal Processor)
    * OMAP3630 - 720 MHz ARM Cortex A8 + 430 MHz C64x+ DSP + PowerVR SGX530 GPU + ISP (Image Signal Processor)
    * OMAP3620 - 720 MHz ARM Cortex A8 + 430 MHz C64x+ DSP + PowerVR SGX530 GPU + ISP (Image Signal Processor)
    * OMAP3610 - 720 MHz ARM Cortex A8 + 430 MHz C64x+ DSP
    * OMAP3530 - 600 MHz ARM Cortex A8 + 430 MHz C64x+ DSP + PowerVR SGX530 GPU + ISP (Image Signal Processor)
    * OMAP3525 - 600 MHz ARM Cortex A8 + 430 MHz C64x+ DSP + ISP (Image Signal Processor)
    * OMAP3515 - 600 MHz ARM Cortex A8 + PowerVR SGX530 GPU + ISP (Image Signal Processor)
    * OMAP3503 - 600 MHz ARM Cortex A8
    * OMAP3440 - 800 MHz ARM Cortex A8 + PowerVR SGX 530 GPU + 430MHz C64x+ DSP + ISP (Image Signal Processor)
    * OMAP3430 - 600 MHz ARM Cortex A8 + PowerVR SGX 530 GPU + 430MHz C64x+ DSP + ISP (Image Signal Processor)
    * OMAP3420 - 600 MHz ARM Cortex A8 + PowerVR SGX 530 GPU + 430MHz C64x+ DSP + ISP (Image Signal Processor)
    * OMAP3410 - 600 MHz ARM Cortex A8 + 430MHz C64x+ DSP + ISP (Image Signal Processor)

OMAP4

    * OMAP4440 - 1+ GHz dual-core ARM Cortex-A9 MPCore + PowerVR SGX 540 GPU + C64x+ DSP + ISP     * OMAP4430 - 720 MHz dual-core ARM Cortex-A9 MPCore + PowerVR SGX 540 GPU + C64x+ DSP + ISP 
"Basic multimedia"

    * OMAP331 - ARM9
    * OMAP310 - ARM9
    * OMAP-DM270 - ARM7 + C54x DSP

"Modem and applications"

    * OMAPV1035 - single-chip EDGE
    * OMAPV1030 - EDGE digital baseband
    * OMAP850 - 200 MHz ARM926EJ-S + GSM/GPRS digital baseband + stacked EDGE co-processor
    * OMAP750 - 200 MHz ARM926EJ-S + GSM/GPRS digital baseband + DDR Memory support
    * OMAP733 - 200 MHz ARM926EJ-S + GSM/GPRS digital baseband + stacked SDRAM
    * OMAP730 - 200 MHz ARM926EJ-S + GSM/GPRS digital baseband + SDRAM Memory support
    * OMAP710 - 133 MHz ARM925 + GSM/GPRS digital baseband


zaurus

Specifications
416MHz PXA-270 XScale processor
64MB RAM
128MB internal flash memory
640x480 16bpp backlit LCD touchscreen display
Input methods: keyboard, stylus with handwriting recognition
Ports: IrDA, USB (host & slave), headphones & remote, Zaurus connector, SD memory card slot, CF slot

Unlike the C3000 and C3100 units, there is no internal hard drive. A microdrive can be installed in the CF slot. I chose the C1000 specifically because it did not have a hard drive, since I worry that a hard drive subjected to a lot of handheld use would be prone to failure, especially if dropped. 

http://images.google.it/imgres?imgurl=http://www.gelhaus.net/zaurus/PC130020.JPG&imgrefurl=http://www.gelhaus.net/cgi-bin/showpage.py%3Fzaurus/%2Breview_C1000.html&usg=__ZV9tNgX12Qz30p94Hdf9g-X76bo=&h=300&w=400&sz=87&hl=it&start=9&sig2=lhOnrvLp7sO5iWtrdsG3fQ&um=1&tbnid=tI_-a3eyDKMw9M:&tbnh=93&tbnw=124&ei=Jza1SdjoC4eW_gaYlLG6BA&prev=/images%3Fq%3Dopen%2Bzaurus%2Bc1000%26hl%3Dit%26sa%3DN%26um%3D1

touchbook

Touchbook.png

The specifications

  • SIZE 9.4" x 7" x 1.4" for 2 lbs (with keyboard)
  • ARM Texas Instruments OMAP3 chip
  • 1024x600 8.9 screen
  • Storage: 8GB micro SD card
  • Wifi 802.11b/g/n and Bluetooth
  • 3-dimensional accelerometer
  • Speakers, micro and headphone
  • 6 USB 2.0 (3 internal, 2 external, 1 mini)
  • 10h to 15 hours of battery life


https://www.alwaysinnovating.com/touchbook/

sheevaplug

Sheevaplug-mobo.png

http://www.marvell.com/products/embedded_processors/developer/kirkwood/sheevaplug.jsp

SheevaPlug from Marvell contains MV88F6281 cpu running at 1.2GHz with 512MB of DDR2/800 memory. Other nice things are:

  • CPU: MV88F6281 @ 1.2GHz, Marvell Sheeva ARM, that is armv5te compliant
  • cache: 16+16Kb L1, 256Kb L2
  • endian ness: little endian and big endian both supportd
  • elf format: ELF 32-bit LSB executable, ARMv1 (SYSV), statically linked, not stripped
  • 1GbE network controller
  • 512MB of NAND for storage
  • USB 2.0 controller (up to 480Mbps speed)
  • RS232 serial port
  • ARM JTAG
  • SDIO slot
  • U-boot as bootloader


  • Sub Total: $99.00
  • Shipping: (FedEx International Priority) $31.78
  • Tax: $0.00
  • Total: $130.78


processor features

  • GIGABIT ETHERNET PORTS
  • SATA II PORTS
  • TDM PORTS

wondering if to switch to modern platform

nokia n810

  • Model name: Nokia N810
  • CPU type: TI Omap 2420 @400 Mhz ---> arch arm-v11, endinaness ???
  • OS: 2.4??? 2.6??? ---> see "Maemo" Internet Tablet 2007 maemo OS2008 http://en.wikipedia.org/wiki/Maemo_(operating_system)
  • Display: 4.1" 800 X 480, LED b/l, Soft (Finger) Touch
  • RAM: 128 MB
  • Flash: 2048 MB
  • Keyboard: qwerty
  • Mouse Pointer: NO
  • Battery capacity: 5.5 (Wh)
  • Size: 128/72/14 mm, 226g
  • Physical Interfaces
    • Mini-SD slot
    • Headset i/f (Mic+Line)
  • Wireless Interfaces
    • 802.11b/g
    • BT2.0
    • No Wireless WAN (e.g. 3G cellular)


SCHEDA ARTICOLO
Sistema Operativo 	Internet Tablet 2007 maemo OS2008 basato su Linux
Tecnologia 	n.d.
Banda 	Non presente.
Bluetooth 	Specifica Bluetooth v. 2.0. +EDR o Profili supportati: HID, FTP, DUN, GAP, SPP, HSP, SAP e OPP
Wi-Fi 	Wi-Fi standard: IEEE 802.11b/g
Antenna GPS 	Ricevitore GPS integrato
Tipo Memoria 	DDR RAM 128MB
Flash 256MB
Fino a 2 GB di memoria interna
Supporto per memory card miniSD e microSD compatibili (con adattatore).
Supporto per memory card fino a 8GB. (Le memory card SD oltre i 2GB devono essere compatibili con SDHC).
Caratteristiche importanti 	Pratica tastiera QWERTY a scorrimento, integrata.
Ricevitore GPS integrato
Vivavoce stereo e microfono di qualità
Ampio display ad alta risoluzione
Supporto da tavolo integrato
Webcam VGA integrata
Tasto hardware per il blocco del touch screen e dei tasti
Sensore di illuminazione ambientale
Funzioni speciali 	Browser basato sulla tecnologia Mozilla con supporto Web standard di ultima generazione, incluso AJAX Navigazione delle pagine mediante scorrimento, panning o tramite l’uso dei tasti, per l'ingrandimento e la riduzione dei siti Web. Plug-in completo di Adobe® Flash® 9 per desktop, con streaming audio e video
Musica 	Lettore multimediale integrato per la visione e l'ascolto di contenuti multimediali scaricati, trasferiti o in streaming, e comoda gestione della libreria multimediale sul telefono cellularey Accesso diretto a media condivisi su Universal Plug and Play (UPnP) Formati di file supportati: 3GP, AVI, WMV, MP4, H263, H.264, MPEG-1, MPEG-4, RV (RealVideo) Formati audio supportati: MP3, WMA, AAC, AMR, AWB, M4A, MP2, RA (RealAudio), WAV Formati di playlist supportati: M3U, PLS, ASX, WAX, WVX, WPL
Autonomia 	Batteria: Batteria Nokia BP-4L
Utilizzo continuo (display acceso, LAN senza fili attiva): fino a 4 ore
Riproduzione di musica: fino a 10 ore
Autonomia on-line: fino a 5 giorni
Autonomia in standby: fino a 14 giorni
Display 	Display WVGA da 4,13' ad alta risoluzione (800 x 480 pixel) fino a 65.536 colori
Funzioni standard 	Visualizzazione delle immagini a tutto schermo e funzionalità presentazione Formati di immagini supportati: BMP, GIF, ICI, JPE, JPEG, PNG, TIF/TIFF, SVG, Tiny, WBMP
Dimensioni 	Lunghezza: 72 mm
Larghezza: 128 mm
Spessore: 14 mm
Contenuto della confezione 	Nokia N800 Internet Tablet RX-44
Batteria Nokia BP-4L
Auricolare stereo Nokia HS-48
Caricabatterie da viaggio Nokia AC-4
Supporto veicolare Nokia CR-89
Custodia CP-223
Cavo di connessione Nokia CA-101
Guida di avvio rapido
Manuale d’uso con informazioni su sicurezza, garanzia e maggiori dettagli sul prodotto

openpandora

Openpandora.jpg Openpandora-size.jpg

http://www.elinux.org/Image:openpandora-mobo.jpg

  • ARM® Cortex™-A8 CPU running Linux
  • 800×480 4.3″ 16.7 million color touchscreen LCD
  • OpenGL 2.0 ES compliant 3D hardware
  • Wi-Fi 802.11b/g
  • Dual SDHC card slots
  • Dual analog and digital gaming controls
  • 43 button QWERTY and numeric keypad
  • TV output
  • High Speed USB Host


Specifications
    * Texas Instruments OMAP3530 System-on-Chip with Cortex-A8 600MHz
    * 256MB DDR-333 SDRAM[15]
    * 512MB NAND FLASH memory[15]
    * IVA2+ audio and video processor (based on the TMS320C64x+ DSP Core at 430MHz) using Texas Instruments's DaVinci technology[15]
    * ARM Cortex-A8 superscalar microprocessor core[15]
    * PowerVR SGX 530 (110 MHz) OpenGL ES 2.0 compliant 3D hardware[15]
    * Integrated Wi-Fi 802.11b/g[15]
    * Integrated Bluetooth 2.0 + EDR (3Mbit/s) (Class 2, +4dBm)[15]
    * 800x480 resolution touchscreen LCD, 4.3" widescreen, 16.7 million colors (300 cd/m2 brightness, 450:1 contrast ratio)[15]
    * Dual analog nubs; 15mm diameter, concave, 2.5mm travel from center[15][19]
    * Full gamepad controls plus shoulder buttons[15]
    * Dual SDHC card slots (currently supporting up to 32GB of storage each, supports SDIO)[15]
    * Headphone output up to 150mW/channel into 16 ohms, 99dB SNR[15]
    * TV output (composite and S-Video)[15]
    * Internal microphone plus ability to connect external microphone through headset[15]
    * 43 button QWERTY and numeric keypad[15]
    * USB 2.0 OTG port (480Mb/s) with capability to charge the Pandora[15]
    * USB 2.0 HOST port (480Mb/s) capable of providing standard 500mA current to attached devices[15]
    * Externally accessible UART for hardware hacking and debugging[15]
    * Brick prevention with integrated bootloader for safe code experimentation[15]
    * Runs the Linux kernel (2.6.x)[15]
    * 4000mAH rechargeable lithium polymer battery[20][21]
    * Estimated 5-10+ hour battery life for games, 10+ hour battery life for video and general applications, and theoretically 100+ hours for music playback (with backlight off and maximum power management)[22][23]
    * Dimensions: 140x83x27mm (5.51x3.27x1.06 in)[15]
    * Weight: ~300 g[24]