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[avr-libc-dev] [bug #50501] eeprom_update_byte() can reduce wear more

From: Eric Tang
Subject: [avr-libc-dev] [bug #50501] eeprom_update_byte() can reduce wear more
Date: Thu, 9 Mar 2017 00:04:54 -0500 (EST)
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36


                 Summary: eeprom_update_byte() can reduce wear more
                 Project: AVR C Runtime Library
            Submitted by: e_l_tang
            Submitted on: Thu 09 Mar 2017 05:04:53 AM UTC
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
        Percent Complete: 0%
             Assigned to: None
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 2.0.0
           Fixed Release: None



If the new value does not contain any 1 bits where the old value contains a 0
bit (ANDing the new value with the old value yields the new value), the cell
does not have to be erased and can simply be overwritten with the new value.


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