AVR Downloader/UploaDEr - Bugs: bug #37768, Poll usbtiny 100 times at init...
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bug #37768: Poll usbtiny 100 times at init time to handle low-clock devices
Submitter: | Keith Packard <keithp> | ||
Submitted: | Sun 18 Nov 2012 07:21:16 PM UTC | ||
Category: | None | Severity: | 3 - Normal |
Priority: | 5 - Normal | Item Group: | None |
Status: | In Progress | Privacy: | Public |
Assigned to: | joerg_wunsch | Originator Name: | keithp |
Open/Closed: | Open | Release: | None |
Programmer hardware: | Device type: |
Jump to the original submission
Thu 12 Sep 2013 11:34:21 AM UTC, comment #7: |
Joerg Wunsch <joerg_wunsch> |
Thu 12 Sep 2013 09:16:50 AM UTC, comment #6: OK, as threatened, I used a logic analyzer to see what's
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Joerg Wunsch <joerg_wunsch> |
Wed 11 Sep 2013 09:27:20 AM UTC, comment #5: Btw., applying your patch doesn't help here either, it still
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Joerg Wunsch <joerg_wunsch> |
Wed 11 Sep 2013 07:20:56 AM UTC, comment #4: For another test, I tried the attached testcase. It sets
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Joerg Wunsch <joerg_wunsch> |
Tue 10 Sep 2013 09:47:18 PM UTC, comment #3:
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Joerg Wunsch <joerg_wunsch> |
Tue 10 Sep 2013 09:39:08 PM UTC, comment #2: Hrm. I'm not using the fuse to adjust the clock, rather I'm letting the chip come up at full speed and then clocking it down once the OS starts. I wonder if this affects how it responds to the reset?
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Keith Packard <keithp> |
Tue 10 Sep 2013 09:14:17 PM UTC, comment #1: I'm not completely reluctant to accept the patch, but in
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Joerg Wunsch <joerg_wunsch> |
Sun 18 Nov 2012 07:21:16 PM UTC, original submission:
I've got an ATtiny85 project that clocks the CPU down to 250kHz at boot time. That's too slow for programming. To fix this, I need to hold RESET low when first powering up the device.
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Keith Packard <keithp> |
Depends on the following items: None found
Items that depend on this one: None found
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Follow 9 latest changes.
Date | Changed by | Updated Field | Previous Value | => | Replaced by |
---|---|---|---|---|---|
2013-09-12 | joerg_wunsch | Attached File | - | Added failing.png, #29115 | |
Attached File | - | Added init-stk500.png, #29116 | |||
Attached File | - | Added clockchange-stk500.png, #29117 | |||
Attached File | - | Added working.png, #29118 | |||
2013-09-11 | joerg_wunsch | Attached File | - | Added t45.c, #29099 | |
Status | Need Info | In Progress | |||
2013-09-10 | joerg_wunsch | Status | None | Need Info | |
Assigned to | None | joerg_wunsch | |||
2012-11-18 | keithp | Attached File | - | Added 0001-Poll-usbtiny-100-times-at-init-time-instead-of-twice.patch, #26926 |
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Corresponding source code
A respective paragraph has been added to doc/avrdude.texi,
SVN r1218.