[OpenTRV-interest] Firmware Loading - Walrus ?

Mark Hanford mark at hanfordonline.co.uk
Fri Jan 6 12:23:29 GMT 2017


The Walrus has a MicroUSB on the back, so you can upload new firmware
without needing an ISP. As far as I am aware, you still need an ISP for the
bootloader though. (I'll let Mark or Deniz correct me on that one)

Mark (too many Mark's - everyone online calls me Cyl, so that'll do here
too)

On 6 January 2017 at 12:11, Simon Hobson <linux at thehobsons.co.uk> wrote:

> Jason Pearce <jason at pearce.org.uk> wrote:
>
> > Reading the wiki, it suggests firmware/bootloaders can be programmed
> using a walrus
> > https://github.com/opentrv/OTWiki/wiki/REV11-Firmware-Loading-Walrus
> >
> > I have purchased a "USBtinyISP V4 AVR ISP Programmer" - apart from
> simplicity of programming the various boards, does the walrus provide any
> other functionality that the avr doesn't ?
>
> I'm glad you asked that, because it prompts me to ask something I wasn't
> sure about.
>
> Looking at the photos in that Wiki, it looks like there's a 6 pin ribbon
> cable & connector like that on the AVR programmer - so I'm assuming there's
> "something else" not mentioned to connect between USB (can't see anything
> USB on the Walrus board) and the board.
>
> So do we need some sort of USB-<something> adapter as well as the Walrus
> board ?
>
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