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  1. Embed this notice
    ✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Wednesday, 28-May-2025 18:23:52 JST ✧✦Catherine✦✧ ✧✦Catherine✦✧

    today in normal microcontrollers (imxrt1052):
    - no internal flash, requires an external (Q)SPI chip. both NOR and NAND are supported
    - if you put a SOIC clip onto the chip it stops booting
    - if you erase the flash it stops being accessible to a debugger
    - if you assert SYSRESETREQ it stops talking to the debugger for long enough that everything times out. presumably it is looking in the flash for whether debugging is allowed or whatever

    why is it like this ;w;

    In conversation about a month ago from mastodon.social permalink
    • Embed this notice
      ✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Wednesday, 28-May-2025 18:24:05 JST ✧✦Catherine✦✧ ✧✦Catherine✦✧
      in reply to

      can i please have a normal device _just once_

      In conversation about a month ago permalink
    • Embed this notice
      ✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Wednesday, 28-May-2025 18:26:04 JST ✧✦Catherine✦✧ ✧✦Catherine✦✧
      in reply to

      designed by NXP (Freescale (Motorola))

      In conversation about a month ago permalink
    • Embed this notice
      ✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Wednesday, 28-May-2025 18:27:28 JST ✧✦Catherine✦✧ ✧✦Catherine✦✧
      in reply to

      also my only devboard with it emits a loud high-pitched coil whine the entire time it's turned on. if it blinks a LED the pitch changes slightly. if it processes a command via SWD it also changes

      In conversation about a month ago permalink
    • Embed this notice
      ✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Wednesday, 28-May-2025 18:29:10 JST ✧✦Catherine✦✧ ✧✦Catherine✦✧
      in reply to

      also if you power the board on with the debugger connected via SWD, for goddess knows what reasons it usually just doesn't boot

      In conversation about a month ago permalink
    • Embed this notice
      niconiconi (niconiconi@mk.absturztau.be)'s status on Wednesday, 28-May-2025 18:44:24 JST niconiconi niconiconi
      in reply to

      @whitequark@mastodon.social Nexperia (NXP (Phillips)) logic chips.

      In conversation about a month ago permalink

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