SPRACN1 May   2019 TMS320F2800132 , TMS320F2800133 , TMS320F2800135 , TMS320F2800137 , TMS320F2800152-Q1 , TMS320F2800153-Q1 , TMS320F2800154-Q1 , TMS320F2800155 , TMS320F2800155-Q1 , TMS320F2800156-Q1 , TMS320F2800157 , TMS320F2800157-Q1 , TMS320F280021 , TMS320F280021-Q1 , TMS320F280023 , TMS320F280023-Q1 , TMS320F280023C , TMS320F280025 , TMS320F280025-Q1 , TMS320F280025C , TMS320F280025C-Q1 , TMS320F280040-Q1 , TMS320F280040C-Q1 , TMS320F280041 , TMS320F280041-Q1 , TMS320F280041C , TMS320F280041C-Q1 , TMS320F280045 , TMS320F280048-Q1 , TMS320F280048C-Q1 , TMS320F280049 , TMS320F280049-Q1 , TMS320F280049C , TMS320F280049C-Q1

 

  1.   C2000 Software Controlled Firmware Update Process
    1.     Trademarks
    2. 1 Introduction
    3. 2 Configuring Custom Boot Mode
      1. 2.1 Custom Boot Pin Selection
      2. 2.2 Custom Boot Mode Definition
      3. 2.3 Writing the Values to User OTP
    4. 3 Hardware Modifications
    5. 4 Software Modifications
      1. 4.1 Application Software Modifications
      2. 4.2 Flash Kernel Modifications
      3. 4.3 Firmware Update Process
    6. 5 Flowchart
    7. 6 Summary
    8. 7 References

2.1 Custom Boot Pin Selection

The default boot modes in TMS320F28004x need 2 GPIOs (GPIO32, GPIO24) to select one of the supported boot modes. For the purpose of firmware update we need to select between SCI or Flash boot modes which can be achieved with just one GPIO. This can be customized by configuring the boot configuration word in OTP to 0x5AFFFF0F. This selects GPIO 15 (0x0F) as the boot select pin.

BOOTPIN_CONFIG.BMSP0 to 0x0F (this selects 15 as boot select pin)

BOOTPIN_CONFIG.BMSP1 to 0xFF

BOOTPIN_CONFIG.BMSP2 to 0xFF

BOOTPIN_CONFIG.KEY to 0x5A