AVR Downloader/UploaDEr - Patches: patch #3136, Add support for setting the SCK...
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patch #3136: Add support for setting the SCK period on the STK500
Submitter: | None | ||
Submitted: | Wed 16 Jun 2004 07:20:46 PM UTC | ||
Category: | None | Priority: | 5 - Normal |
Status: | Done | Privacy: | Public |
Assigned to: | None | Originator Email: | -email is unavailable- |
Open/Closed: | Closed |
Attached Files
file #7558: sck.diff added by None (7KiB - application/octet-stream - Adds sck command for use with STK500)
Depends on the following items: None found
Items that depend on this one: None found
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Follow 3 latest changes.
Date | Changed by | Updated Field | Previous Value | => | Replaced by |
---|---|---|---|---|---|
2004-07-07 | hinni | Status | None | Done | |
Open/Closed | Open | Closed | |||
2004-06-16 | None | Attached File | - | Added sck.diff, #3368 |
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Corresponding source code
This patch adds the ability to set the SCK period on the STK500. I needed this because the mega48 comes from the factory configured to use the 8 Mhz internal oscillator divided by 8. This results in a max SCK frequency of 250 kHz. Changing the oscillator frequency via the STK500 fosc command doesn't help, as it has no impact on SPI speed in this case. Reducing the speed of SCK allows for reliable SPI communication between the STK500 and the target device.
The following files were changed:
avrdude.1
doc/avrdude.texi
pgm.h
stk500.c
term.c