AVR Downloader/UploaDEr - Bugs: bug #53703, FT232H based programmer returns...
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bug #53703: FT232H based programmer returns all 0xFF when reading flash from atmega2560
Submitter: | None | ||
Submitted: | Thu 19 Apr 2018 10:07:59 PM UTC | ||
Category: | None | Severity: | 3 - Normal |
Priority: | 5 - Normal | Item Group: | None |
Status: | Need Info | Privacy: | Public |
Assigned to: | None | Originator Name: | Christoph |
Originator Email: | -email is unavailable- | Open/Closed: | Open |
Release: | 6.3 | Programmer hardware: | FT232H |
Device type: | m2560 |
Fri 10 Dec 2021 09:54:05 PM UTC, comment #1: |
Joerg Wunsch <joerg_wunsch>![]() |
Thu 19 Apr 2018 10:07:59 PM UTC, original submission:
avrftdi.c does not send load extended address byte command when address is lower than 64k word but using a device which need this command. See attached patch for bug-fix. |
Anonymous |
Depends on the following items: None found
Items that depend on this one: None found
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Follow 2 latest changes.
Date | Changed by | Updated Field | Previous Value | => | Replaced by |
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2021-12-10 | joerg_wunsch | Status | None | ![]() |
Need Info |
2018-04-19 | None | Attached File | - | ![]() |
Added avrftdi.c.patch, #43979 |
Well, I think the logic behind this still has some issues.
Looking at "native" programming algorithms (in avr.c), the usual decision logic is:
Issuing the load extended address command only for few selected addresses is error-prone: not every load file has to start at addr==0, for example.