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P2 loader — Parallax Forums

P2 loader

mjaved47mjaved47 Posts: 21
in PASM2/Spin2 (P2)

I am trying to make a loader using a P2 or any other microcontroller that would help to program a P2 without needing a PC. I wonder if there have been similar posts or related works done before. I would really appreciate any help.

Comments

  • evanhevanh Posts: 15,192
    edited 2023-06-08 12:30

    From a cold boot, there is three ways the Prop2 looks for a program.
    1: Comport (Prop2 is the slave)
    2: SPI EEPROM (Prop2 is the master)
    3: SD card (Prop2 is the master)

    Any of these could be used but the comport option is the intended choice. All are documented in the Silicon Google Doc - https://www.parallax.com/propeller-2/documentation/ Section "SERIAL LOADING PROTOCOL"
    And of course existing loaders can be referenced as well.

    EDIT: Ouch, font size of the live Silicon Doc is messed up. The half finished Hardware Manual has a revised edition of the same info. Section titled "Download Propeller Application"

  • Wuerfel_21Wuerfel_21 Posts: 4,508

    @evanh said:
    EDIT: Ouch, font size of the live Silicon Doc is messed up. The half finished Hardware Manual has a revised edition of the same info. Section titled "Download Propeller Application"

    As always, https://p2docs.github.io/boot.html#serial-boot

  • evanhevanh Posts: 15,192

    yes :)

  • bte2bte2 Posts: 154
    edited 2023-10-10 13:19

    Back in the old days of Basic Stamps I bought a thing called a 'Stache' that could hold 8 .bs2 programs in banks. It might be possible to repurpose such a thing but I haven't looked into it at all.

    edit- https://emesystems.com/OLDSITE/stache.htm

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