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Using AM57xx and possibly MCU to increase # of stepper motors and eQEPS

Seb Richards
Prodigy 20 points
Other Parts Discussed in Thread: DRV8711

Hi All,

Sorry not sure if correct forum?

Hoping for some feedback regarding what my options are.

Looking to build system which has
As fast and possible processor, at least 1 DDR3 RAM and an Ethernet port.
5 Stepper Motors drivers
5 Encoder inputs like eQEP
Inputs for 5 sensors (like hall etc)
All stepper motor, encoder inputs and sensorer inputs need to be via a real time processor and RTOS.

Wondering how I can put together such a platform using off the shelf products.

As wondering if possible to have a ARM15 as add extra MCUs? Is this possible?

Also happy to consider building a custom PCB design to suite my application, but wondering what people in the community think is possible?

No idea is too crazy.

Interested in the 
AM57xx (with no graphics)
MCU C2000 Piccolo
Stepper drivers like the board "Stepper Motor BoosterPack featuring DRV8711"

Maybe a customer board using the different components or interconnecting them or other ideas?
Wondering what the community minds think?

CHeers
Seb

  • 0
    TI__Mastermind 26065 points
    Hi Seb,

    If you are using driver like DRV8711 which have the on-device index, all your need for the upper MCU controller is to send STEP/DIR/SPI commands to the driver, which significantly reduces your MCU resourses.

    But if you have something like 5 axies linkage moving, you may need high real time calulation for your MCU to do interpolation of the STEP commands for each axies. That will be depent on how fast and how fine the movements you want. Also if you need to check all the 5 position feedback frequently, you may need to consider either to use one high perfermance MCU or use multi-MCUs to make a distributed system.

    You can check more on MCU forum of the MCU selection.
    e2e.ti.com/.../
    e2e.ti.com/.../

    Best regards,