Systems and methods for updating software in a hazard detection system
摘要
說明書
Image portions 608 and 610 can be either an active or inactive portion, depending on which portion is currently being used for the software executing on the hazard system. For example, if the hazard system booted using code stored in image portion 608, image portion 608 would be the active portion, and image portion 610 would be the inactive portion. As defined herein, an active portion of code may be code that has been installed in (and being run from) the ‘local’ memory associated with a processor. As defined herein, an inactive portion of code may be code that exists in a memory (e.g., NVM) but is not currently installed in (and being run from) the ‘local’ memory associated with a processor. During a software update process (e.g., an over the air download embodiment), a newly downloaded software update package can be stored in the inactive portion. In other embodiments, the downloaded software update package can be stored in any available portion, including the active portion. The software stored in NVM 600 may serve as storage for all of the software running on each of the processors and/or devices contained within the hazard system, but not all the code is executed from the NVM 600. Respective code portions for each processor and/or device can be installed therein and the locally installed code may be executed.
