[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[avr-chat] FTDI bitbang (ft232r / ftdi_syncbb) timing problem i.c.w. ATt
From: |
Michai Ramakers |
Subject: |
[avr-chat] FTDI bitbang (ft232r / ftdi_syncbb) timing problem i.c.w. ATtiny88, and hang at avrdude exit |
Date: |
Sun, 5 Jul 2015 17:05:37 +0200 |
Hello,
I just built an FTDI-based bitbanging programmer using FT232RL in a
pinch, to program an ATtiny88.
It seems that the problem described in
https://www.mail-archive.com/address@hidden/msg03744.html
...is still present in avrdude 6.1. (I was surprised it hadn't been
fixed in the meanwhile, or I am overlooking something.)
After applying the patch at the above URL, programming works, however,
avrdude now hangs at program exit. (The above mail hints at that as
being an additional problem; I couldn't find separate info on this.)
The hang seems to be in 'ft245r_close()' (ft245r.c), at the call to
'ftdi_usb_close()'.
As a test, disabling the calls to 'ftdi_usb_close()' and
'ftdi_deinit()' seem to make the programming work, at least.
Are these known problems? I can provide more information or try to
debug this, if desired.
Thank you in advance,
Michai
[Prev in Thread] |
Current Thread |
[Next in Thread] |
- [avr-chat] FTDI bitbang (ft232r / ftdi_syncbb) timing problem i.c.w. ATtiny88, and hang at avrdude exit,
Michai Ramakers <=