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froggy

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  1. froggy
    @@energia Did you forget to include it as an example in the last release? I don't currently have access to any TivaC hardware, so I can't personally verify that it still works in Energia. Also, I noticed that the "arch/lwiplib.h" doesn't seem to exist anymore, and is instead "architecture/lwiplib.h". Why the change? @@B@tto, Are you able to successfully ping the Tiva board?
  2. froggy
    On the Energia pinout image of the Tiva C, it shows that PG0/PG1 and PN4/PN5 are both connected to the I2C module. Will the Wire library for the Tiva C connected send/receive I2C data on both sets of pins? Or are we supposed to somehow specify which pins we want I2C on? I'm having difficulty reading an MS5837 I2C depth sensor on module 1. I call the Wire.setModule(1) function before calling the Wire.begin(), and I have verified that pull-ups are in place. I was intending to use PG0/PG1 for this, but don't have anything connected to PN4/PN5. I have no issues reading the depth sensor with a
  3. froggy
    With my code base on a Tiva C connected, I'll occasionally have trouble pinging the board. I have a static IP set on the same subnet for my laptop and the Tiva C. The problem seems to be resolved by running a UDP example, pinging the board from the laptop, and then reloading my software. Though, I will note that this process doesn't seem to be rock-solid and can take a bit of fiddling to get it going at first. Is there any reason the ICMP ping responder could stop working or reasons for why it might be flaky like this occasionally?
  4. froggy
    Are you doing any filtering on the sensor output? I'd suggest setting up an RC low pass filter to smooth out the jitter, and then maybe oversampling the data (read it 2-10x more often than needed) and applying a moving average on the data.
  5. froggy
    If you need to measure a frequency in the 1-2 Megahertz (MHz) range, I suspect that a hardware counter will be absolutely necessary. From the TM4C1294, it looks like the timers do support edge counting. You might also be able to use the quadrature input to measure counts over time too.
  6. froggy
    From the tm4c1294, I thought I remembered only seeing 8 PWM pins, yet the Energia picture (http://energia.nu/wordpress/wp-content/uploads/2014/06/LaunchPads-LM4F-TM4C-%E2%80%94-Pins-Maps-13-34.jpeg) shows quite a bit more than that. Can you really get PWM on every pin marked for PWM on the Energia diagram, or is it a case of all of the pins marked being PWM capable but only get PWM on 8 of them?
  7. froggy
    For those interested, I also have a pretty cool (if I must say so myself...) Processing <-> "Arduino/Energia" library on GitHub: https://github.com/sopgenorth/MSOE_ROV_2015 . It communicates a set of variables to/from the two devices over UDP, and is pretty easy to use and get going.
  8. froggy
    It is certainly possible to add this as a programming method to Energia. The behind the scenes stuff is pretty straightforward, send the "magic packet" (defined in the LM Flash help), start a BOOTP client, then send the compiled binary over TFTP. I'm working on setting up the Energia build environment right now to take a stab at it. Edit: It might be even easier than I thought if it's "kosher" to have the TI LM flash utility included in the Energia build. Energia could then just have some dialog option for adjusting your Ethernet settings (perhaps even auto-detect them), and a new "u
  9. froggy
    Thanks for the starting point there. The calls to Swupdate don't seem to be working since the LM Flash Utility still hangs on the "trying to connect". Starting the MAC/PHY with the "SoftwareUpdateInit()" function, my callback function is called as expected. I get the same behavior with the Energia UDP/Ethernet libraries where I can see the "magic update packet". I suspect that the issue is that I don't have the proper Ethernet Bootloader installed, but can't seem to find any information on how to install/build it. Any idea how I can install the Ethernet Bootloader/include it in my projects?
  10. froggy
    The LM Flash utility provided by TI does support "flash over ethernet". From what I've seen on TI's forums, you need to make some calls to functions in the TivaWare "swupdate.h" to monitor for Ethernet flash commands. I've tried adding TivaWare stuff to the Energia build without much luck. I think my next step will be to move over to CSS 6, which naturally provides a better environment for calling Energia and TivaWare functions. If anyone has anything to add to this, let me know. If I get flashing over Ethernet to work, I'll update this post to document my steps.
  11. froggy
    It would be really awesome for my project if I could update code over Ethernet, instead of USB for my Tiva C connected. I've tried the latest version of the LM Flash Utility (Build 1613) and cannot seem to connect to the Tiva C over Ethernet with the utility. I have a MAC and IP set on my board using the Energia Ethernet UDP library and can verify them with a ping and look at my laptop's ARP table, but I am unsure if this is enough to satisfy the needs of the LM Flash Utility. I was hoping that the functionality would be supported "behind the scenes" in Energia, but that does not seem to be th
  12. froggy
    I'm trying to read and write data from an OV6630 I2C camera module with my TIVA C connected series. After searching, reading manuals, and playing around with my code I'm unsure why it isn't working. Does anyone here have a suggestion as to why it might not be working? For reference, here's the code: http://pastebin.com/Jy1pAxwm I'm using TI's CCS 5.4 on a Windows 8.1 machine.
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