patchAVR Downloader/UploaDEr - Patches: patch #9963, UsbAsp 3 MHz patch for...


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patch #9963: UsbAsp 3 MHz patch for UsbAsp-flash firmware

Submitted by:  Marcin Miskiewicz <mamuttme>
Submitted on:  Sat 01 Aug 2020 09:06:42 AM UTC  
Category:  None Priority:  5 - Normal
Status:  Done Privacy:  Public
Assigned to:  Joerg Wunsch <joerg_wunsch> Open/Closed:  Closed

Fri 18 Sep 2020 09:52:43 PM UTC, comment #1: 

Applied in r1446 (with some minor stylistic modifications), thanks!

Joerg Wunsch <joerg_wunsch>
Project AdministratorIn charge of this item.
Sat 01 Aug 2020 09:06:42 AM UTC, original submission:  

I have patched the usbasp support for use of 3 MHz SCK as in the UsbAsp-flash firmware:
(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.

Marcin Miskiewicz <mamuttme>


Attached Files
file #49594:  usbasp_sck_3mhz.patch added by mamuttme (3KiB - text/x-patch)


Depends on the following items: None found

Items that depend on this one: None found


Carbon-Copy List
  • -email is unavailable- added by joerg_wunsch (Posted a comment)
  • -email is unavailable- added by mamuttme (Submitted the item)

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    Follow 4 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2020-09-18 joerg_wunsch StatusNone => Done
        Assigned toNone => joerg_wunsch
        Open/ClosedOpen => Closed
    2020-08-01 mamuttme Attached File- => Added usbasp_sck_3mhz.patch, #49594

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