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[patch #9963] UsbAsp 3 MHz patch for UsbAsp-flash firmware
From: |
Marcin Miskiewicz |
Subject: |
[patch #9963] UsbAsp 3 MHz patch for UsbAsp-flash firmware |
Date: |
Sat, 1 Aug 2020 05:06:44 -0400 (EDT) |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.89 Safari/537.36 |
URL:
<https://savannah.nongnu.org/patch/?9963>
Summary: UsbAsp 3 MHz patch for UsbAsp-flash firmware
Project: AVR Downloader/UploaDEr
Submitted by: mamuttme
Submitted on: Sat 01 Aug 2020 09:06:42 AM UTC
Category: None
Priority: 5 - Normal
Status: None
Privacy: Public
Assigned to: None
Originator Email:
Open/Closed: Open
Discussion Lock: Any
_______________________________________________________
Details:
I have patched the usbasp support for use of 3 MHz SCK as in the UsbAsp-flash
firmware:
https://github.com/nofeletru/UsbAsp-flash
(I am not the author of this firmware, however I have tested it and find it
useful).
My patch tests the capabilities of the firmware using the
USBASP_FUNC_GETCAPABILITIES request, so there should be no influence on the
devices which do not support 3 MHz. I have looked into the firmware's code,
and it would be theoretically possible to increase the SCK speed up to 6 MHz,
but this would be only reasonable when the target's F_CPU would be >18 MHz,
which I think is rare.
_______________________________________________________
File Attachments:
-------------------------------------------------------
Date: Sat 01 Aug 2020 09:06:42 AM UTC Name: usbasp_sck_3mhz.patch Size: 3KiB
By: mamuttme
<http://savannah.nongnu.org/patch/download.php?file_id=49594>
_______________________________________________________
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