SPRUIU9B August   2020  – September 2022 TMS320F280033 , TMS320F280034 , TMS320F280034-Q1 , TMS320F280036-Q1 , TMS320F280036C-Q1 , TMS320F280037 , TMS320F280037-Q1 , TMS320F280037C , TMS320F280037C-Q1 , TMS320F280038-Q1 , TMS320F280038C-Q1 , TMS320F280039 , TMS320F280039-Q1 , TMS320F280039C , TMS320F280039C-Q1 , TMS320F280040-Q1 , TMS320F280040C-Q1 , TMS320F280041 , TMS320F280041-Q1 , TMS320F280041C , TMS320F280041C-Q1 , TMS320F280045 , TMS320F280048-Q1 , TMS320F280048C-Q1 , TMS320F280049 , TMS320F280049-Q1 , TMS320F280049C , TMS320F280049C-Q1 , TMS320F28P550SJ , TMS320F28P559SJ-Q1

 

  1.   Live Firmware Update Without Device Reset on C2000 MCUs
  2.   Trademarks
  3. 1Introduction
  4. 2Key Innovations
  5. 3Building Blocks for LFU
  6. 4Details of Proposed Solution
    1. 4.1 Flash Bank Organization
    2. 4.2 LFU Concepts and Factors Impacting Performance
    3. 4.3 Hardware Support for LFU
      1. 4.3.1 Multiple Flash Banks
      2. 4.3.2 Interrupt Vector Table Swap
      3. 4.3.3 RAM Block Swap
      4. 4.3.4 Hardware Register Flags
    4. 4.4 LFU Compiler Support
    5. 4.5 Application LFU Flow
  7. 5Results and Conclusion
  8. 6Revision History

1 Introduction

In applications like server power supplies, the system is desired to be run continuously to reduce downtime. But typically during firmware upgrades - due to bug fixes, new features, and/or performance improvements - the system is removed from service causing downtime. This can be handled with redundant modules but with increase in total system cost. An alternate approach, called Live Firmware Update (LFU), allows firmware to be updated while the system is still operating. Switching to new firmware can be done either with or without resetting the device, with the latter being more complex.