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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. Cybergibbons‏ @cybergibbons 19 Mar 2020
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      |----------------| | STOP | | USING | | MICROCHIP | | PICS | | IN | | INTERNET | | CONNECTED | | DEVICES | | | | OK | |----------------| (\__/) || (•ㅅ•) || / 　 づ

      29 replies 31 retweets 263 likes
    2. SwiftOnSecurity‏ @SwiftOnSecurity 19 Mar 2020
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      Replying to @cybergibbons

      ELI5

      1 reply 0 retweets 10 likes
    3. Paul M Gerhardt‏Verified account @pmg 19 Mar 2020
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      Replying to @SwiftOnSecurity @cybergibbons

      A generation of electrical engineers (over 40 under 60) design everything using a microcontroller called a “PIC” (peripheral interface controller). They are *very* cheap. They perform no security validation.

      5 replies 0 retweets 26 likes
    4. Mx. Lottie (Charlotte)  💜 🦊‏ @Foxsan48 20 Mar 2020
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      Replying to @pmg @SwiftOnSecurity @cybergibbons

      heck... I'm 25 and I would have used a PIC[AXE] as we learned on those in school.

      1 reply 0 retweets 4 likes
    5. kuza‏ @kuzetsa 20 Mar 2020
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      Replying to @Foxsan48 @pmg and

      yeah, my first experience with microcontrollers was PIC too. these days AVR is starting to become more popular, fortunately.

      1 reply 0 retweets 4 likes
    6. Hector Martin‏ @marcan42 20 Mar 2020
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      Replying to @kuzetsa @Foxsan48 and

      I learned microcontrollers with the venerable PIC16F84 and descendants, way before Arduino was a thing. It took me over 15 years years to finally jump ship to AVRs for random small projects. Please don't use PICs. For anything. There is literally no metric where they are ideal.

      4 replies 6 retweets 31 likes
    7. ᴊᴀʏ ᴄᴀʀʟsoɴ‏ @jaydcarlson 20 Mar 2020
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      Replying to @marcan42 @kuzetsa and

      Literally no metric? Power consumption, DIP availability, analog peripheral selection, cross-platform vendor-supported tooling, interrupt latency, code density, ease of programming, pin remappability, short-run factory programming, code-gen tools, low-cost debuggers...

      3 replies 0 retweets 1 like
    8. Hector Martin‏ @marcan42 20 Mar 2020
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      Replying to @jaydcarlson @kuzetsa and

      > cross-platform vendor-supported tooling Since when is "vendor-supported" a positive? PICs have *horrible* C support and the vendor compilers are a complete joke. AVRs have excellent support in gcc. > ease of programming Have you *ever* written PIC asm vs, like, anything else?

      1 reply 1 retweet 5 likes
      Hector Martin‏ @marcan42 20 Mar 2020
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      Replying to @marcan42 @jaydcarlson and

      > pin remappability What? At least in my age, you got one (1) pin per special function most of the time, if two clashed, sorry, sucks to be you. Look at modern ARM chips for proper remappability. > short-run factory programming Who cares? Everyone should use in-circuit prog.

      8:44 AM - 20 Mar 2020
      • 2 Likes
      • Tom Fleet Paul M Gerhardt
      2 replies 0 retweets 2 likes
        1. New conversation
        1. Hector Martin‏ @marcan42 20 Mar 2020
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          Replying to @marcan42 @jaydcarlson and

          > low-cost debuggers Seriously, have you tried any other micros? PICs were historically on the *expensive* side of debuggers (ugh ICD2, nevermind the ICE era), until PICkit came along. By then other micros had cheap debuggers too.

          1 reply 0 retweets 5 likes
        2. Hector Martin‏ @marcan42 20 Mar 2020
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          Replying to @marcan42 @jaydcarlson and

          > power consumption That's MSP430 land. > code density Citation needed. Also, RETLW 0x42 > code-gen tools What does this even mean? The PIClist busyloop delay generator?

          3 replies 0 retweets 6 likes
        3. Show replies
        1. Tom Fleet‏ @tomfleet 20 Mar 2020
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          Replying to @marcan42 @jaydcarlson and

          Factory programming often is two tier also. Test and verification F/W is often seperate from the firmware binary IMO. It gets rolled into the board test stage usually and I've always made a case for tested, programmed deliverables in terms of PCB stock.

          0 replies 0 retweets 0 likes
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