nicolo.boscolo

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  • February 7, 2014 at 12:43 pm in reply to: Permanent cnc code on TinyG #5385
    nicolo.boscolo
    Member

    Ok, now everything it’s clear to start the dirty job! 🙂

    Thanks again!
    Nicolò

    February 7, 2014 at 11:16 am in reply to: Permanent cnc code on TinyG #5383
    nicolo.boscolo
    Member

    Ok i read more documentation and i got to the same your conclusions. So, SPI for SD Card and J17 – J20 are output for possible external motor drivers.
    Looking at cad docs and xmega documentation, i figured out that J17 – J20 are digital programmable ports. If so, I should be able to edit the firmware in order to use the ports as an half of input and an half of output.

    Thank you!
    Nicolò

    February 7, 2014 at 6:06 am in reply to: Permanent cnc code on TinyG #5377
    nicolo.boscolo
    Member

    Thank you for the rapid reply! Really great news!
    I’m using step motors then the I/O regarding the encoders (J17 to J20) are not used in my application. So, tell me if, in your opinion, this could be a good plan:
    1. by a sd breakout board (probably http://www.adafruit.com/products/254)
    2. in order to use the board, remap the I/O encoder pins (by editing the firmware)
    3. Use the arduino sd library to manage the data inside the sd card

    PS. About point 2, the GPIO is now mapped on some screw terminal blocks for cooling, PWM and other stuffs. Then, the encoder I/Os seems the most feasible solution, imho.

    Cheers,
    Nicolò

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