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From: | anonymous |
Subject: | [avrdude-dev] [bug #13125] ATMega169 efuse reserved bit |
Date: | Thu, 19 May 2005 15:50:06 +0000 |
User-agent: | Mozilla/5.0 (Windows; U; Windows NT 5.1; de-DE; rv:1.7.5) Gecko/20041217 |
URL: <http://savannah.nongnu.org/bugs/?func=detailitem&item_id=13125> Summary: ATMega169 efuse reserved bit Project: AVR Downloader/UploaDEr Submitted by: None Submitted on: Don 19.05.2005 um 15:50 Category: None Severity: 3 - Normal Item Group: None Status: None Privacy: Public Assigned to: None Originator Name: Christian Zietz Originator Email: Open/Closed: Open _______________________________________________________ Details: According to the datasheet the least significant bit of the extended fuse byte of an ATMega169 is reserved and should not be programmed. In the corresponding write command in avrdude.conf this bit is marked as "ignore" ("x"). This causes the bit to be set to zero and thus the reserved fuse to be programmed. Atmel confirmed that the programming of this bit affects the RESET pin so that further SPI programming is not possible. I had to switch to JTAG to reset this fuse bit. I think the avrdude.conf needs to be corrected. _______________________________________________________ Reply to this item at: <http://savannah.nongnu.org/bugs/?func=detailitem&item_id=13125> _______________________________________________ Nachricht geschickt von/durch Savannah http://savannah.nongnu.org/
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