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The NetBSD Toaster

kv9 writes "Finally after many, many yeas of running on everything-but-your-toaster NetBSD is there too. Technologic Systems has made a toaster that is controlled by NetBSD and powered by one of their ARM boards, the TS-7200. Everything is controlled through sysctl, there are LEDs that show you what is going on, the toaster can play MP3s while it fries the bread and even has Apache/PHP installed. More information in the press release [pdf warning] and on this running NetBSD on the TS-7200 page."

13 of 229 comments (clear)

  1. So... by Knight+Thrasher · · Score: 5, Funny
    If it crashes, does your toast get burnt?

    The BTOD? Black Toast of Death?

    1. Re:So... by cvk · · Score: 5, Informative

      Yes, actually! I'm Christian von Kleist and I'm with The NetBSD Foundation, manning the booth at LinuxWorld SF '05 and operating our sweet, sweet toaster demo. The script that does the toasting is /usr/local/bin/toast (seriously). Scripts interface with the toaster device drivers (the burner relay, the buttons, the LED bank, the toastiness knob, and the relay that turns on the latch electromagnet) through sysctl.

      Pictures I took: http://wickedways.org/articles/linuxworld2005/

      Here's what's available to a script from sysctl:

      # sysctl -a | grep hw.t
      hw.toaster0.led0_duty = 1 hw.toaster0.led0_width = 8
      hw.toaster0.led1_duty = 2 hw.toaster0.led1_width = 16
      hw.toaster0.led2_duty = 4 hw.toaster0.led2_width = 32
      hw.toaster0.led3_duty = 8 hw.toaster0.led3_width = 64
      hw.toaster0.magnetic_latch = 0 hw.toaster0.burner_element = 0
      hw.toastersensors0.burnlevel_knob = 1593 hw.toastersensors0.cancel_key = 0 hw.toastersensors0.cancel_key_ticks = 13 hw.toastersensors0.toast_key = 0
      hw.toastersensors0.toast_key_ticks = 4 hw.toastersensors0.bagel_key = 0
      hw.toastersensors0.bagel_key_ticks = 6
      hw.toastersensors0.warm_key = 0 hw.toastersensors0.warm_key_ticks = 7 hw.toastersensors0.frozen_key = 0 hw.toastersensors0.frozen_key_ticks = 10 hw.toastersensors0.toast_down = 0 hw.toastersensors0.toast_down_ticks = 50965 hw.tspld0.board_temp = 40250000 hw.tspld0.board_temp_5s = 40290128
      hw.tspld0.board_temp_30s = 40477805

      (The board_temp are the temperature in C, multiplied by 10^6, so right now it's at 40.25 degrees C.) /usr/local/bin/toast is pretty complicated, but a basic toast script works like this:

      #! /bin/sh
      sysctl -w hw.toaster0.magnetic_latch=1
      # user presses toast lever down now...
      sysctl -w hw.toaster0.burner_element = 1
      sleep 60
      sysctl -w hw.toaster0.burner_element = 0
      sysctl -w hw.toaster0.magnetic_latch=0
      echo "Toast is done!"

      Only root has write access to hw.toaster0.burner_element! :D

      The real script uses trap to prevent the sleep line from being interrupted, since that could result in a fire!

      Just FYI:
      # dmesg
      NetBSD 3.0_BETA (TS7200) #57: Mon Aug 8 00:34:41 MST 2005
      joff@sayan.wifi.home:/home/joff/NetBSD-toaster/obj /sys/arch/evbarm/compi
      le/TS7200
      total memory = 32768 KB
      avail memory = 28196 KB
      mainbus0 (root)
      cpu0 at mainbus0: ARM920T rev 0 (ARM9TDMI core)
      cpu0: DC enabled IC enabled WB enabled EABT
      cpu0: 16KB/32B 64-way Instruction cache
      cpu0: 16KB/32B 64-way write-back-locking-A Data cache
      epsoc0 at mainbus0: Cirrus Logic EP93xx SoC rev E0
      epsoc0: fclk 200.03 Mhz hclk 100.01 Mhz pclk 50.01 Mhz
      ohci0 at epsoc0 addr 0x80020000-0x80020fff intr 56
      epclk0 at epsoc0 addr 0x80810000-0x8081008f intr 35
      epe0 at epsoc0 addr 0x80010000-0x8001ffff intr 39
      epe0: MAC address 00:d0:69:4f:af:76
      ukphy0 at epe0 phy 1: Generic IEEE 802.3u media interface
      ukphy0: OUI 0x0010a1, model 0x0021, rev. 9
      ukphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
      epcom0 at epsoc0 addr 0x808c0000-0x808c0fff intr 52
      epcom1 at epsoc0 addr 0x808d0000-0x808d0fff intr 54
      epcom1: console
      ohci0: OHCI version 1.0
      usb0 at ohci0: USB revision 1.0
      uhub0 at usb0
      uhub0: Cirrus Logic OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
      uhub0: 3 ports with 3 removable, self powered
      tspld0 at mainbus0: Technologic Systems TS-7200 rev C, features 0x1
      tspld0: jumpers 0x7
      tspld0: board temperature 21.93 degC (71.48 degF)
      isa0 at tspld0: PC/104 expansion bus
      tsdio0 at isa0 port 0x100-0x107: Technologic Systems TS-DIO24
      toasterlcd0 at tsdio0: 4x40 text-mode hd44780 LCD
      toasterlcd0: using port C, bits 0-7 as DB0-DB7
      toasterlcd0: using port B, bits 0-3 as RS, WR, EN1, EN2
      wsdisplay0 at toasterlcd0 kbdmux 1
      wsmux1: connecting to wsdisplay0
      toaster0 at ts

  2. Server by Anonymous Coward · · Score: 5, Funny

    I guess their server is toast.

  3. Wait, this story confuses me by Anonymous Coward · · Score: 5, Funny

    I'm a little confused by this story.

    Did Netcraft just confirm that my toaster is dead?

  4. I don't think so.... by jericho4.0 · · Score: 5, Funny

    This might be appropriate for a single guy on a budget, but we all know that scaling problems will keep this from being deployed in any serious environment.

    --
    "A language that doesn't affect the way you think about programming, is not worth knowing" - Alan Perlis
    1. Re:I don't think so.... by dr_dank · · Score: 5, Funny

      If you had a beowulf cluster of these, you could toast a whole loaf at once!

      --
      Where does the school board find them and why do they keep sending them to ME?
  5. Re:Already Dead by leonardluen · · Score: 5, Funny

    "...it fries the bread and even has Apache/PHP installed."

    that will teach them to run their webserver on a toaster!

  6. As always by iamdrscience · · Score: 5, Funny

    This just proves how ahead of its time Amiga was. The Video Toaster came out in 1990. Now, 15 years later, someone finally puts another system on a toaster and it doesn't even have video! Maybe another 15 and the world will catch up.

  7. 2005 is... by crimson_alligator · · Score: 5, Funny

    ...the year of BSD on the countertop!

  8. If only... by MiddleHitter · · Score: 5, Funny

    Now, if only NetBSD ran a garbage-disposal, we could say that NetBSD runs everything and the kitchen sink!

    --
    I don't fear computers, I fear the lack of them. -I. Asimov
  9. The World Needs More Toast Tech by bloodmusic · · Score: 5, Insightful

    I'd like to see this extended to a combined toaster/jelly-jet printer. Delicious toast printed to order with the image of your choice. Of course it would require a bread feeder that could do cut slice or continuous loaf.

  10. Dave Lister had one 3 million years from now by davidwr · · Score: 5, Funny

    Th is one talked.

    --
    Knowledge is how to play a game, intelligence is how to win, wisdom is knowing what game to play.
  11. Re:Yeah, but... by wf_john · · Score: 5, Insightful

    Once upon a time, in a kingdom not far from here, a king summoned two of his advisors for a test. He showed them both a shiny metal box with two slots in the top, a control knob, and a lever. What do you think this is?" he asked. One advisor, an engineer, answered first. "It is a toaster," he said. The king asked, "How would you design an embedded computer for it?" The engineer replied, "Using a 4-bit microcontroller, I would write a simple program that reads the darkness knob and quantizes its position to one of 16 shades of darkness, from white to black. The program would use that darkness level as the index to a 16 element table of initial timer values. Then it would turn on the heating elements and start the timer with the initial value selected from the table. At the end of the time delay, it would turn off the heat and pop up the toast. By next week, I can show you a working prototype." The second advisor, a computer scientist, immediately recognized the danger of such short-sighted thinking. He said, "Toasters don't just turn bread into toast, they are also used to warm frozen waffles. What you see before you is really a breakfast food cooker. As the subjects of your kingdom become more sophisticated, they will demand morecapabilities. They will need a breakfast food cooker that can also cook sausage, fry bacon, and make scrambled eggs. A toaster that only makes toast will soon be obsolete. If we don't look to the future, we will have to completely redesign the toaster in just a few years." "With this in mind, we can formulate a more intelligent solution to the problem. First, create a class of breakfast foods. Specialize this class into subclasses: grains, pork, and poultry. The specialization process should be repeated with grains divided into toast, muffins, pancakes, and waffles; pork divided into sausage, links, and bacon; and poultry divided into scrambled eggs, hard-boiled eggs, poached eggs, fried eggs, and various omelet classes." "The ham and cheese omelet class is worth special attention because it must inherit characteristics from the pork, dairy, and poultry classes. Thus, we see that the problem cannot be properly solved without multiple inheritance. At run time, the program must create the proper object and send a message to the object that says, 'Cook yourself.' The semantics of this message depend, of course, on the kind of object, so they have a different meaning to a piece of toast than to scrambled eggs." "Reviewing the process so far, we see that the analysis phase has revealed that the primary requirement is to cook any kind of breakfast food. In the design phase, we have discovered some derived requirements. Specifically, we need an object-oriented language with multiple inheritance. Of course, users don't want the eggs to get cold while the bacon is frying, so concurrent processing is required, too." "We must not forget the user interface. The lever that lowers the food lacks versatility, and the darkness knob is confusing. Users won't buy the product unless it has a user-friendly, graphical interface. When the breakfast cooker is plugged in, users should see a cowboy boot on the screen. Users click on it, and the message 'Booting UNIX v. 8.3' appears on the screen. (UNIX 8.3 should be out by the time the product gets to the market.) Users can pull down a menu and click on the foods they want to cook." "Having made the wise decision of specifying the software first in the design phase, all that remains is to pick an adequate hardware platform for the implementation phase. A 1 GHz Intel Pentium IV with 256 MB of memory, a 6 GB hard disk, and a Flat Panel monitor should be sufficient. If you select a multi-tasking, object-oriented language that supports multiple inheritance and has a built-in GUI, writing the program will be a snap. Imagine the difficulty we would have had if we had foolishly allowed a hardware-first design strategy to lock us into a 4-bit microcontroller!" The king wisely had the computer scientist beheaded, and they all lived happily ever after.