bugAVR Downloader/UploaDEr - Bugs: bug #49881, programmer is out of sync on...


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bug #49881: programmer is out of sync on Raspberry Pi 3

Submitted by:  None
Submitted on:  Sun 18 Dec 2016 10:39:06 PM UTC  
Category:  None Severity:  3 - Normal
Priority:  5 - Normal Item Group:  None
Status:  None Privacy:  Public
Assigned to:  None Originator Name:  LeBomb
Originator Email:  -email is unavailable- Open/Closed:  Open
Release:  6.3 Programmer hardware:  Stk500/arduino
Device type:  atmega328

Sun 18 Dec 2016 10:39:06 PM UTC, original submission:

I installed arduino 1.6.13 (which embed avrdude 6.3) on a Raspberry Pi 3 (2016-11-25-raspbian-jessie).
I correctly program my arduino Nano when I connect the Nano on a USB port of the RPI3.
But, if i connect the RPI3 on a USB Hub which is connected to the RPI3, the upload fails:

avrdude: AVR device initialized and ready to accept instructions
avrdude: Device signature = 0x1e950f (probably m328p)
avrdude: stk500_cmd(): programmer is out of sync

I tried many scenario to understand the problem:
- I installed the same configuration on a RPI1 and on a RPI2, everything works correctly on both.

- I set the speed of my RPI3 to 500Mhz and everything works correcly !

It seems that this bug is linked to latency/timing problems




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