Skip to content
By using Twitter’s services you agree to our Cookies Use. We and our partners operate globally and use cookies, including for analytics, personalisation, and ads.
  • Home Home Home, current page.
  • About

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @
  • Language: English
    • Bahasa Indonesia
    • Bahasa Melayu
    • Català
    • Čeština
    • Dansk
    • Deutsch
    • English UK
    • Español
    • Filipino
    • Français
    • Hrvatski
    • Italiano
    • Magyar
    • Nederlands
    • Norsk
    • Polski
    • Português
    • Română
    • Slovenčina
    • Suomi
    • Svenska
    • Tiếng Việt
    • Türkçe
    • Ελληνικά
    • Български език
    • Русский
    • Српски
    • Українська мова
    • עִבְרִית
    • العربية
    • فارسی
    • मराठी
    • हिन्दी
    • বাংলা
    • ગુજરાતી
    • தமிழ்
    • ಕನ್ನಡ
    • ภาษาไทย
    • 한국어
    • 日本語
    • 简体中文
    • 繁體中文
  • Have an account? Log in
    Have an account?
    · Forgot password?
    New to Twitter?
    Sign up
oe1cxw's profile
Claire Xen 🏳️‍⚧️🏳️‍🌈🧙🏻‍♀️ BLM 🏴🚩
Claire Xen 🏳️‍⚧️🏳️‍🌈🧙🏻‍♀️ BLM 🏴🚩
Claire Xen  🏳️‍⚧️ 🏳️‍🌈 🧙🏻‍♀️ BLM  🏴 🚩
@oe1cxw

Tweets

Claire Xen  🏳️‍⚧️ 🏳️‍🌈 🧙🏻‍♀️ BLM  🏴 🚩

@oe1cxw

Neurodiverse trans geek girl. Yosys, RISC-V, SAT/SMT.

She/her/hers
clairexen.net
Joined September 2014

Tweets

  • © 2021 Twitter
  • About
  • Help Center
  • Terms
  • Privacy policy
  • Imprint
  • Cookies
  • Ads info
Dismiss
Previous
Next

Go to a person's profile

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @

Promote this Tweet

Block

  • Tweet with a location

    You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more

    Your lists

    Create a new list

    Under 100 characters, optional
    Privacy

    Copy link to Tweet

    Embed this Tweet

    Embed this Video

    Add this Tweet to your website by copying the code below. Learn more

    Add this video to your website by copying the code below. Learn more

    Hmm, there was a problem reaching the server.

    By embedding Twitter content in your website or app, you are agreeing to the Twitter Developer Agreement and Developer Policy.

    Preview

    Why you're seeing this ad

    Log in to Twitter

    · Forgot password?
    Don't have an account? Sign up »

    Sign up for Twitter

    Not on Twitter? Sign up, tune into the things you care about, and get updates as they happen.

    Sign up
    Have an account? Log in »

    Two-way (sending and receiving) short codes:

    Country Code For customers of
    United States 40404 (any)
    Canada 21212 (any)
    United Kingdom 86444 Vodafone, Orange, 3, O2
    Brazil 40404 Nextel, TIM
    Haiti 40404 Digicel, Voila
    Ireland 51210 Vodafone, O2
    India 53000 Bharti Airtel, Videocon, Reliance
    Indonesia 89887 AXIS, 3, Telkomsel, Indosat, XL Axiata
    Italy 4880804 Wind
    3424486444 Vodafone
    » See SMS short codes for other countries

    Confirmation

     

    Welcome home!

    This timeline is where you’ll spend most of your time, getting instant updates about what matters to you.

    Tweets not working for you?

    Hover over the profile pic and click the Following button to unfollow any account.

    Say a lot with a little

    When you see a Tweet you love, tap the heart — it lets the person who wrote it know you shared the love.

    Spread the word

    The fastest way to share someone else’s Tweet with your followers is with a Retweet. Tap the icon to send it instantly.

    Join the conversation

    Add your thoughts about any Tweet with a Reply. Find a topic you’re passionate about, and jump right in.

    Learn the latest

    Get instant insight into what people are talking about now.

    Get more of what you love

    Follow more accounts to get instant updates about topics you care about.

    Find what's happening

    See the latest conversations about any topic instantly.

    Never miss a Moment

    Catch up instantly on the best stories happening as they unfold.

    1. Greg‏ @GregDavill 20 Dec 2019
      • Report Tweet
      • Report NetzDG Violation

      Loctite GC-10 T4 solderpaste doing all the heavy lifting! :Dpic.twitter.com/V6YpV60tVb

      14 replies 19 retweets 178 likes
      Show this thread
    2. Greg‏ @GregDavill 20 Dec 2019
      • Report Tweet
      • Report NetzDG Violation

      For such a small PCB this has a decent number of parts, 102 placements in 35 groups!!pic.twitter.com/PnDuwdSW79

      3 replies 6 retweets 65 likes
      Show this thread
    3. Greg‏ @GregDavill 20 Dec 2019
      • Report Tweet
      • Report NetzDG Violation

      Here is a quick breakout board for the @latticesemi Crosslink NX QFN72 part that was announced last week. https://github.com/gregdavill/ArcticKoala …pic.twitter.com/32uXJEvRtf

      6 replies 8 retweets 78 likes
      Show this thread
    4. Greg‏ @GregDavill 20 Dec 2019
      • Report Tweet
      • Report NetzDG Violation

      - Power rails look okay. - FTDI programs the FLASH correctly. - FPGA is not configuring itself, time to work out what I've done wrong. -_-

      1 reply 0 retweets 11 likes
      Show this thread
    5. Greg‏ @GregDavill 20 Dec 2019
      • Report Tweet
      • Report NetzDG Violation

      It's pulling a bitstream from the FLASH. Seems to do 3 'probes', I think this is related to it's dual/multiboot features. Clock rate does change mid-configuration to what I've set in radiant. So it is pulling in valid data.pic.twitter.com/pBd1pHSKSX

      1 reply 0 retweets 10 likes
      Show this thread
    6. Greg‏ @GregDavill 20 Dec 2019
      • Report Tweet
      • Report NetzDG Violation

      I don't think the I/O drivers in the NX part are stronger than the FTDI. (Which might be the case with ice40) Isolating the FTDI from the SPI bus let's the FPGA configure!! 😁pic.twitter.com/OG6OlC0BCe

      2 replies 2 retweets 14 likes
      Show this thread
    7. Greg‏ @GregDavill 20 Dec 2019
      • Report Tweet
      • Report NetzDG Violation

      Adding some 100R inline resistor fixes that issue.pic.twitter.com/uvUujFXBIO

      4 replies 4 retweets 45 likes
      Show this thread
    8. Greg‏ @GregDavill 20 Dec 2019
      • Report Tweet
      • Report NetzDG Violation

      I've been using `iceprog` to handle programming of the FLASH. After loading a new bitstream the FPGA doesn't boot until poked by a power cycle. turns out iceprog issues a 'Power Down' command when it completes. And the SPI loader logic on CL-NX does not issue a 'Power Up' :'(

      2 replies 0 retweets 15 likes
      Show this thread
    9. Claire Xen  🏳️‍⚧️ 🏳️‍🌈 🧙🏻‍♀️ BLM  🏴 🚩‏ @oe1cxw 21 Dec 2019
      • Report Tweet
      • Report NetzDG Violation
      Replying to @GregDavill

      That's weird. iCE40s do send a power up (and a power down when they are done reading the bitstream). No idea why lattice wouldn't want to do that in all their parts.

      1 reply 0 retweets 1 like
    10. Greg‏ @GregDavill 21 Dec 2019
      • Report Tweet
      • Report NetzDG Violation
      Replying to @oe1cxw

      I assume the ice40 SPI master design was all done by Silicon Blue not Lattice? I don't think the ECP5 sends these commands, atleast from my experience with them.

      1 reply 0 retweets 2 likes
      Claire Xen  🏳️‍⚧️ 🏳️‍🌈 🧙🏻‍♀️ BLM  🏴 🚩‏ @oe1cxw 21 Dec 2019
      • Report Tweet
      • Report NetzDG Violation
      Replying to @GregDavill

      Good point. Maybe we should make sending the final power down optional? Considering that iceprog is inherently working with a USB-powered device there really is no point in saving a few microamps.

      1:35 AM - 21 Dec 2019
      • 1 Like
      • arturo182
      2 replies 0 retweets 1 like
        1. New conversation
        1. Adam Greig‏ @adamgreig 21 Dec 2019
          • Report Tweet
          • Report NetzDG Violation
          Replying to @oe1cxw @GregDavill

          Doesn't icepack -s do this?

          1 reply 0 retweets 0 likes
        2. Claire Xen  🏳️‍⚧️ 🏳️‍🌈 🧙🏻‍♀️ BLM  🏴 🚩‏ @oe1cxw 21 Dec 2019
          • Report Tweet
          • Report NetzDG Violation
          Replying to @adamgreig @GregDavill

          -s should just slow down the SPI clock to 50 kHz. (Main use case is SW-based logic analyzers.)

          1 reply 0 retweets 0 likes
        3. Show replies
        1. Greg‏ @GregDavill 21 Dec 2019
          • Report Tweet
          • Report NetzDG Violation
          Replying to @oe1cxw

          This would be a good option I think. For now, I've just modified a local version to not send the power down command ever.

          0 replies 0 retweets 1 like
          Thanks. Twitter will use this to make your timeline better. Undo
          Undo

      Loading seems to be taking a while.

      Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.

        Promoted Tweet

        false

        • © 2021 Twitter
        • About
        • Help Center
        • Terms
        • Privacy policy
        • Imprint
        • Cookies
        • Ads info