The eeprom library is missing 2 important features in its read and write
methods and because of this, software locks can happen (an example showing this
is here http://youtu.be/_yOcKwu7mQA). The 2 features that need to be added to
the read and write methods are below:
1. Check that EEPROM is ready before reading/writing (eeprom_is_ready function)
2. Read/write operations on EEPROM should never be interrupted : we should
always disable interrupts (nointerrupts()) before any operation and
re-enable/set interrupts after (interrupts()).
In section 7.6.3 of the ATmega328 datasheet 'EECR – The EEPROM Control
Register' describes these requirements and the blog post below describes these
requirements in a more easy to understand way.
http://michael.bouvy.net/blog/en/2013/06/17/eeprom-advanced-usage-arduino-uno-at
mega328-int-char-string/
Original issue reported on code.google.com by dparson...@gmail.com on 27 Aug 2014 at 7:43
Original issue reported on code.google.com by
dparson...@gmail.comon 27 Aug 2014 at 7:43