SPRUIZ1B July 2023 – August 2024 TMS320F28P650DH , TMS320F28P650DK , TMS320F28P650SH , TMS320F28P650SK , TMS320F28P659DH-Q1 , TMS320F28P659DK-Q1 , TMS320F28P659SH-Q1
End equipment like Server Power Supply (PSU) are high availability systems that need to have minimum downtime, even during firmware upgrades. Firmware upgrades are essential to add additional functionality, enhance performance and fix software bugs/vulnerabilities. LFU helps update firmware while the application is running, thus eliminating downtime (with respect to critical real-time interrupts) and also providing a more cost-effective alternative compared to manually updating firmware.
LFU has traditionally been implemented in the C2000 family of MCUs using software-only techniques. This impacts LFU switchover time, which is the time to switchover to new firmware once the transition has begun. User application code initiates this transition, typically by jumping to an entry point in the new firmware. There, a compiler provided initialization routine specific to LFU is called. This initializes user-specified data variables. When execution arrives in main() of the new application, user application code performs minimal initialization to get the new application running.