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gordon

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  1. Like
    gordon got a reaction from yyrkoon in Efficient micro mathematics   
    Tripped over this by accident while watching one of Travis Goodspeed's talks:
     
    Efficient Micro Mathematics
  2. Like
    gordon got a reaction from mixographer in Serial (without emulation side)?   
    You need either the FTDI to go from TTL serial to USB or you need the MAX3232 to go from TTL to RS232 (I don't know if the MAX232 can cope with 3.3V, the 3232 can, IIRC).
  3. Like
    gordon got a reaction from mixographer in Serial (without emulation side)?   
    Connect a USB-serial converter (FTDI cable, whatever) to on the RX and TX pins of J3 on the target side, RX is J3 pin 2, TX is J3 pin 3 (see the schematics and the board layout in SLAC437).
  4. Like
    gordon got a reaction from tingo in Efficient micro mathematics   
    Tripped over this by accident while watching one of Travis Goodspeed's talks:
     
    Efficient Micro Mathematics
  5. Like
    gordon got a reaction from SirZusa in Efficient micro mathematics   
    Tripped over this by accident while watching one of Travis Goodspeed's talks:
     
    Efficient Micro Mathematics
  6. Like
    gordon got a reaction from jsolarski-backup in Efficient micro mathematics   
    Tripped over this by accident while watching one of Travis Goodspeed's talks:
     
    Efficient Micro Mathematics
  7. Like
    gordon got a reaction from bluehash in Efficient micro mathematics   
    Tripped over this by accident while watching one of Travis Goodspeed's talks:
     
    Efficient Micro Mathematics
  8. Like
    gordon got a reaction from larsie in Is the reset line pulled low during debugging?   
    [tipdf]SLAU320[/tipdf] comes closest. SBW is serialized JTAG, SBW RST is JTAG SRST#.
  9. Like
    gordon got a reaction from Dimiric in Greetings from South Carolina   
    Nice, but you have spent about $165140 more than would have been necessary for a quick start . The AFE253 can conveniently be programmed with the $4.30 LaunchPad, AFE253 is ~$6-ish in one-off. Not saying the UIF will not do you good, it just wasn't strictly necessary. The difference would have better been spent on The Book.
     
    Anyway, your best friends will be [tipdf]SLAU144[/tipdf] and the device-specific datasheets. Most of the stuff you find regarding the LaunchPad and the G2452/G2553 will basically apply as they are part of the same family.
     
    This should get you going.
  10. Like
    gordon got a reaction from Rei Vilo in Fraunchpad woes   
    Use erase, load (see man first) instead of prog.
     
    http://mspdebug.git.sourceforge.net/git ... 81f5395ec0
  11. Like
    gordon reacted to spirilis in fram for dummies book   
    1. FRAM rulez
    2. FRAM rulez
    3. FRAM rulez
    4. Oh yeah did we mention FRAM rulez?
    5. FRAM is next gen memory technology and more mature than its peer competitiors (PRAM, MRAM, etc)
    6. FRAM reads & writes at the same speed and only needs 1.5V to do it, unlike Flash which needs 10-14V (supplied by an internal charge pump that is part of the flash circuitry) and milliseconds to do its erase/write cycles
    7. FRAM rulez some more
    8. Oh yeah baby, FRAM rulez
    9. TI figured Low Power would be a good initial use-case of the tech and as such they decided to use the MSP430 MCU as the inaugural platform for practical FRAM use
    10. TI is trying to get access times down to 20ns, or 50MHz, with current technology
    11. Current FRAM tech (2T-2C) is rather conservative in terms of density, but they can switch it out to 1T-1C and double the density of available memory with current technology
    12. FRAM rulez some more?
    13. Imagine life without batteries!
    14. FRAM rulez like that
    15. FRAM contents get nuked in the presence of very high heat, e.g. soldering-levels of heat, so it should always be programmed in-circuit after soldering
    16. It's supposed to last for many trillions of read/write cycles, and keep in mind a read forces an erase (and therefore a subsequent re-write) just like with DRAM... that's all handled by the memory controller built in though
    17. FRAM rulez
    18. FRAM rulez
    19. TI partnered with Ramtron to produce the FRAM they use right now
    20. FRAM rulez some more
  12. Like
    gordon reacted to spirilis in LaunchPad on steroids, if you have a lot of spare time...   
    PS, there's a zillion proposed names for this I guess... I call mine the STaunchpad!
  13. Like
    gordon got a reaction from msmith in Issue Uploading   
    Completely unscientific hunch (not even a Windows user myself): install Energia into a directory that has no space in its path (assuming your name has a space in it).
  14. Like
    gordon got a reaction from klima in Launchpad without CCS   
    GCC + MSPDebug + the LP drivers should suffice. You can rip them out of Energia, I suppose (or you can just install Energia and not use the Energia bit).
  15. Like
    gordon got a reaction from advaneharshal in LP Booster Pack Eagle footprints   
    (OK, I have no idea where to put this. BH, feel free to move it around.)
     
    Continuing from viewtopic.php?f=9&t=1348&start=40#p11369
     
    This is the final version; I don't think it can be made any better as well as generic at the same time.
     
    All variants verified against the TI LaunchPad Eagle files.
     
    Thanks to SugarAddict for the corrections.
     
    Pro tip: make your References layer yellow (or any other unused bright color) while placing your components.
     
    Addendum: DipTrace users look here: viewtopic.php?f=35&t=2972
    TI_launchpad.zip
  16. Like
    gordon got a reaction from GeekDoc in 2.2" Color LCD Booster Pack with Touch   
    /?o??u?op?p?sdn?x??//:d???
  17. Like
    gordon got a reaction from larsie in 2.2" Color LCD Booster Pack with Touch   
    /?o??u?op?p?sdn?x??//:d???
  18. Like
    gordon got a reaction from bluehash in 2.2" Color LCD Booster Pack with Touch   
    /?o??u?op?p?sdn?x??//:d???
  19. Like
    gordon reacted to JWoodrell in usb circuit plan in progress   
    hey guys, got my chips in that I ordered (the logic gates) and am starting to build together the circuit to test if its gonna work, I'm soldering it in a prototype board rather than breadboard because I don't feel like making 9 million jumpers to take it onto a breadboard, and I had to solder the chips down anyway.
     
    interestingly the circle pads on the protoboard line up nicely with the feet on the sot-23 package The inverters and buffers only use the one input leg. the NOR gate uses both and I had to shift it so that the middle leg misses the pads completely so i can use a jumper wire over to the next pad and poof, instant soldered mount for the chip. the smaller sc70-6l was a tighter fit but it also fits pad to pad, and the middle legs are free to have jumpers over to the next one. (that caused me more than a few headaches)
     
    the chips have Ioff which lets me power them down and turn the output into a high impedance so it effectively removes them from the circuit. I am only using 3 pins on the MSP, which will change function based on if its transmitting or receiving (idling)
     
    I was playing in eagle-lite while waiting on my parts to get here, and I'm proud of the board I put together (first PCB I have ever laid out)... anyway I am going to try and finish soldering it tomorrow. and I'll let you guys know how it turns out. the layout is a work in progress and I am still playing with it, but this is what I have so far. (I probably did stuff wrong... but meh, I know there is no schematic, I couldn't find the parts I wanted to use and don't know how to make my own yet)
     
    If anyone wants to look at int in eagle, here is the Eagle .brd file
     

     
    The schematic I built it off of.

     
    The project starting to be built

     
    The legs line up nicely I think

     
    These two pics show how the middle legs miss the circular pads, and my jumpers over to the next pad.


  20. Like
    gordon reacted to cubeberg in [S]IV-18 VFD Clock Booster Pack   
    Success!
     
    The only issue so far - I flipped the header for the plug-in board for the tube in the schematic and didn't flip it on the PCB. Had to solder it on the other side, no big deal.
     
    I'm continuing to work on the software - didn't get much time this weekend unfortunately. But it's far enough along that I'll start a projects thread with the software progress. Hopefully I'll be able to do a demo video tonight or tomorrow night.

  21. Like
    gordon got a reaction from energia in Issue Uploading   
    Completely unscientific hunch (not even a Windows user myself): install Energia into a directory that has no space in its path (assuming your name has a space in it).
  22. Like
    gordon got a reaction from Indian_villager in Issue Uploading   
    Completely unscientific hunch (not even a Windows user myself): install Energia into a directory that has no space in its path (assuming your name has a space in it).
  23. Like
    gordon got a reaction from mattanonymous in Help reducing power consumption please :)   
    ... but it still might be better safe than sorry (again, depending on what your compiler does).
  24. Like
    gordon got a reaction from Oscarasimov in Completely clueless and need advice for screen choice.   
    He is going to heat freaking gallons of water, doubtful that a couple of tens (or even hundreds) of mAs is of concern in this case...
  25. Like
    gordon reacted to lhend in Light-weight scheduler for MSP430 Value Line   
    Hi all,
    i just finished a light-weight scheduler for MSP430 Value Line devices. You can check it here:
     
    http://code.google.com/p/mcu-simple-scheduler/
     
    I made two demos using the Launchpad, MSP430G2452, and the Olimex LED Boosterpacks.
     
    Any comment, critics, feedbacks are highly appreciated!
     
    -Leo-
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