Raspberry pi

crypto for pi?

googled "cryto offload for raspberry pi" feb 4th 2016:

https://jbdatko.files.wordpress.com/2014/07/cryptomakers_nopause.pdf

https://news.ycombinator.com/item?id=9436284

...
jwr 285 days ago

I think you are entirely missing the point of these Atmel chips.
More generally (and this is not necessarily addressed to you specifically), I find the knee-jerk response of "just use a Raspberry Pi" amusing. I design embedded systems. Raspberry Pi is, at a first approximation, completely useless, for any task you might want to throw at it.
There are many reasons. Power consumption, complexity, failure rate, poor reliability, reliance on SD cards, poor SD card reliability, poor peripherals, poor documentation, I could go on. RPI has two things going for it: 1) the video processing peripherals, 2) publicity/popularity.
Now, when thinking about embedded systems, most of the time I won't even consider things the size of a Pi (or the much, much better BeagleBone Black). They are monsters, enormously complex and power-hungry beasts. What I will consider are MSP430s, STM32s, Kinetis K and L, and similar — so ARM Cortex M0, M0+ and M4 cores, running at about 50MHz, consuming around 60mW of power (about as much as an LED), and taking up about, say, 8mm2 of board space (that includes all necessary passives). These are well documented, have reasonable complexity, and can be programmed carefully to achieve excellent reliability.
These systems also need crypto, and by crypto I don't just mean "accelerated AES". The Atmel security line is not just "accelerators".
In other words, this board is a very interesting prototyping tool, and no, the answer to any problem is not "just use a Raspberry Pi".

Mounting the sd card

under windows host virtual box

.\VBoxManage.exe internalcommands createrawvmdk -filename "C:\data\VirtualBox VMs\head 100\sdc.vmdk" -rawdisk \\.\PhysicalDrive2

links

http://weworkweplay.com/play/automatically-connect-a-raspberry-pi-to-a-wifi-network/

https://github.com/notro/rpi-firmware/wiki/BCM2708vsBCM2835 ( zer ois a BCM2835 but the rasbian i build against 2708 )

serial

source: http://elinux.org/RPi_Serial_Connection

Speed (baud rate): 115200
Bits: 8
Parity: None
Stop Bits: 1
Flow Control: None

Be sure to connect TX RX and Ground

Took me some time to get this to work.

1. when i had the ground not connected I got spurious characters in the boot process.

2. when I didn't have flow control none I could see the boot process clean but could not type anything.

GPIO

pi@raspberrypi:~ $ sudo apt-get install wiringpi
Reading package lists... Done
Building dependency tree
Reading state information... Done
wiringpi is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 70 not upgraded.
pi@raspberrypi:~ $ gpio -v
gpio version: 2.32
Copyright (c) 2012-2015 Gordon Henderson
This is free software with ABSOLUTELY NO WARRANTY.
For details type: gpio -warranty

Raspberry Pi Details:
  Type: Pi Zero, Revision: 03, Memory: 512MB, Maker: Sony
  * Device tree is enabled.
  * This Raspberry Pi supports user-level GPIO access.
    -> See the man-page for more details
    -> ie. export WIRINGPI_GPIOMEM=1
pi@raspberrypi:~ $ gpio readall
 +-----+-----+---------+------+---+-Pi Zero--+---+------+---------+-----+-----+
 | BCM | wPi |   Name  | Mode | V | Physical | V | Mode | Name    | wPi | BCM |
 +-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+
 |     |     |    3.3v |      |   |  1 || 2  |   |      | 5v      |     |     |
 |   2 |   8 |   SDA.1 |   IN | 1 |  3 || 4  |   |      | 5V      |     |     |
 |   3 |   9 |   SCL.1 |   IN | 1 |  5 || 6  |   |      | 0v      |     |     |
 |   4 |   7 | GPIO. 7 |   IN | 1 |  7 || 8  | 1 | ALT0 | TxD     | 15  | 14  |
 |     |     |      0v |      |   |  9 || 10 | 1 | ALT0 | RxD     | 16  | 15  |
 |  17 |   0 | GPIO. 0 |   IN | 0 | 11 || 12 | 0 | IN   | GPIO. 1 | 1   | 18  |
 |  27 |   2 | GPIO. 2 |   IN | 0 | 13 || 14 |   |      | 0v      |     |     |
 |  22 |   3 | GPIO. 3 |   IN | 0 | 15 || 16 | 0 | IN   | GPIO. 4 | 4   | 23  |
 |     |     |    3.3v |      |   | 17 || 18 | 0 | IN   | GPIO. 5 | 5   | 24  |
 |  10 |  12 |    MOSI |   IN | 0 | 19 || 20 |   |      | 0v      |     |     |
 |   9 |  13 |    MISO |   IN | 0 | 21 || 22 | 0 | IN   | GPIO. 6 | 6   | 25  |
 |  11 |  14 |    SCLK |   IN | 0 | 23 || 24 | 1 | IN   | CE0     | 10  | 8   |
 |     |     |      0v |      |   | 25 || 26 | 1 | IN   | CE1     | 11  | 7   |
 |   0 |  30 |   SDA.0 |   IN | 1 | 27 || 28 | 1 | IN   | SCL.0   | 31  | 1   |
 |   5 |  21 | GPIO.21 |   IN | 1 | 29 || 30 |   |      | 0v      |     |     |
 |   6 |  22 | GPIO.22 |   IN | 1 | 31 || 32 | 0 | IN   | GPIO.26 | 26  | 12  |
 |  13 |  23 | GPIO.23 |   IN | 0 | 33 || 34 |   |      | 0v      |     |     |
 |  19 |  24 | GPIO.24 |   IN | 0 | 35 || 36 | 0 | IN   | GPIO.27 | 27  | 16  |
 |  26 |  25 | GPIO.25 |   IN | 0 | 37 || 38 | 0 | IN   | GPIO.28 | 28  | 20  |
 |     |     |      0v |      |   | 39 || 40 | 0 | IN   | GPIO.29 | 29  | 21  |
 +-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+
 | BCM | wPi |   Name  | Mode | V | Physical | V | Mode | Name    | wPi | BCM |
 +-----+-----+---------+------+---+-Pi Zero--+---+------+---------+-----+-----+
pi@raspberrypi:~ $