Re: Support for ATTINY827, 1627 and 3227

[Konrad Rosenbaum]

Hi,

On 21/02/2023 20:40, Klaus wrote:

> Hi Konrad,
>       
> > 1) Get a cheap USB-serial-TTL dongle from
> >         your online electronics
> >         
> >         discounter of choice. The TTL part is important. (There are
> >         plenty of
> >         
> >         CP210x, FTsomething, and CH340 based designs out there. And they
> >         are
> >         
> >         really cheap.)
> >         
> >       
>       
>       I found a project with hardware including gerber files here:
>       
>       
> https://www.electronics-lab.com/usb-updi-programmer-pcb-for-avr-micrcontrollers/
>       
>       
>       Maybe that helps a bit :-)
>       
>

Exactly the same design, just on one PCB. It uses a slightly different resistor (4.7k instead of 1k).

If there is interest I can post my own KiCad files for a similar design and a short tutorial in the evening.

> > 5) Tell AVRdude to use a "serialupdi"
> >         progger (because that's what you
> >         
> >         just hacked together).
> >         
> >       
>       
>       Which one is a "serialupdi" progger?
>       
>       
>       In my config I found the following updi named proggers, but which
>       one
>       
>       can be used for that simple usb2-5v-serial-1k prog hardware?
>       
>

I think you meant to list a few progger names?

The "serialupdi" only appeared around avrdude 7.0 - so check you have a current version. It is spelled exactly as I wrote it in this mail:

bash> avrdude -c \? 2>&1 | grep -i updi      
 atmelice_updi      = Atmel-ICE (ARM/AVR) in UPDI mode
 jtag2updi          = JTAGv2 to UPDI bridge
 jtag3updi          = Atmel AVR JTAGICE3 in UPDI mode
 pickit4_updi       = MPLAB(R) PICkit 4 in UPDI mode
 pkobn_updi         = Curiosity nano (nEDBG) in UPDI mode
 powerdebugger_updi = Atmel PowerDebugger (ARM/AVR) in UPDI mode

 serialupdi         = SerialUPDI    <<<<===== THAT'S THE ONE

 snap_updi          = MPLAB(R) SNAP in UPDI mode
 xplainedmini_updi  = Atmel AVR XplainedMini in UPDI mode
 xplainedpro_updi   = Atmel AVR XplainedPro in UPDI mode

If you don't have that: simply download AVRdude sources from GitHub and compile it yourself. It's really easy.

    Konrad

OpenPGP_signature
Description: OpenPGP digital signature