URL:
<http://savannah.nongnu.org/bugs/?28611>
Summary: -i delay not being applied to all serial port bit
banging state transitions
Project: AVR Downloader/UploaDEr
Submitted by: None
Submitted on: Fri 15 Jan 2010 02:37:53 PM UTC
Category: None
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: None
Status: None
Privacy: Public
Assigned to: None
Originator Name: Soren Jorvang
Originator Email: [email protected]
Open/Closed: Open
Discussion Lock: Any
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Details:
Getting started with AVR's, I wanted to bootstrap myself with a simple serial
port bit-banging programmer despite having only USB serial (Prolific 2303)
adapters available.
That didn't work, but only because the -i delay wasn't being applied to all
pin state transitions.
With this patch and the osx-pl2303 driver (the one from prolific.com.tw
doesn't allow bit banging at all), communication starts working at -i 1000 and
is reliable at -i 5000.
This gives a flash write rate of no more than 2 bytes/s, but that's
acceptable for the occasional initialization of a fancier programmer or a boot
loader.
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File Attachments:
-------------------------------------------------------
Date: Fri 15 Jan 2010 02:37:53 PM UTC Name: avrdude.diff Size: 1kB By:
None
Patch to apply -i delay to all serbb state transitions
<http://savannah.nongnu.org/bugs/download.php?file_id=19494>
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<http://savannah.nongnu.org/bugs/?28611>
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