On Wednesday, November 6, 2013 22:15:42 luke.leighton wrote:
correct. hence the recommendation that under normal operation the EEPROM should be read-only (and user-applications *including* the bootloader *and* operating system should consider it normal that the EEPROM is read-only) **** BUT ***** that it is an OEM's decision to decide when the EEPROM is readable or writeable, and there will be a RECOMMENDATION that a factory-jumper or other mechanism entirely of the OEM's choosing to permit OS upgrades, developer modes and so on.
an "engineering board" would probably ship by default in "developer mode" i.e. read-write EEPROM. or just not have a read-only mode at all. that is the *OEM*'s choice.
sounds spot on; your mention of the X25 spec is a good lesson to follow, indeed.