Dlloydev / Updi-Key

This DIY open source hardware connects inline with any UPDI programmer to provide a HV UPDI programming solution for tinyAVR® 0/1/2 series MCUs. Compatible with UPDI programmers that operate with jtag2updi, avrdude, pyupdi, MPLAB X IDE, MPLAB X IPE, PlatformIO and Arduino IDE using any target voltage from 3 to 5V.

MIT License

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Explain difference between UPDI and PROG input #1

Closed larsfcfa closed 2 years ago

larsfcfa commented 2 years ago

Hello Folks,

My UPDI-programmer has 3 connector: VGT(VCC) =5V GND UPDI I would connect the UPDI-output of my UPDI-programmer to the J3-1 UPDI-HOST Pin. But what is PROG? Could you please explain?

larsfcfa commented 2 years ago

Question: what is PROG for

label:question

Dlloydev commented 2 years ago

Hi,

PROG is directly connected to the PA0 pin of the Attiny202 and is used to "program" the Updi-Key programmer (for firmware updates).
UPDI-HOST is the UPDI input signal to the Updi-Key.
HVUPDI-TARGET is the target UPDI that includes the 12V pulse and the NVMPROG key code to the UPDI signal as necessary

larsfcfa commented 2 years ago

Thank you, thus PROG is the UPDI-Connect to the ATtiny212 for FW update. Now it's clear!