SPRABV4I October   2021  – August 2025 SM320F28335-EP , SM320F28335-HT , TMS320F280023-Q1 , TMS320F280025-Q1 , TMS320F280025C-Q1 , 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 , TMS320F2802-Q1 , TMS320F28020 , TMS320F280200 , TMS320F28021 , TMS320F28022 , TMS320F28022-Q1 , TMS320F280220 , TMS320F28023 , TMS320F28023-Q1 , TMS320F280230 , TMS320F28026 , TMS320F28026-Q1 , TMS320F28026F , TMS320F28027 , TMS320F28027-Q1 , TMS320F280270 , TMS320F28027F , TMS320F28027F-Q1 , TMS320F28030 , TMS320F28030-Q1 , TMS320F28031 , TMS320F28031-Q1 , TMS320F28032 , TMS320F28032-Q1 , TMS320F28033 , TMS320F28033-Q1 , TMS320F28034 , TMS320F28034-Q1 , TMS320F28035 , TMS320F28035-EP , TMS320F28035-Q1 , TMS320F28050 , TMS320F28051 , TMS320F28052 , TMS320F28052-Q1 , TMS320F28052F , TMS320F28052F-Q1 , TMS320F28052M , TMS320F28052M-Q1 , TMS320F28053 , TMS320F28054 , TMS320F28054-Q1 , TMS320F28054F , TMS320F28054F-Q1 , TMS320F28054M , TMS320F28054M-Q1 , TMS320F28055 , TMS320F2806-Q1 , TMS320F28062 , TMS320F28062-Q1 , TMS320F28062F , TMS320F28062F-Q1 , TMS320F28063 , TMS320F28064 , TMS320F28065 , TMS320F28066 , TMS320F28066-Q1 , TMS320F28067 , TMS320F28067-Q1 , TMS320F28068F , TMS320F28068M , TMS320F28069 , TMS320F28069-Q1 , TMS320F28069F , TMS320F28069F-Q1 , TMS320F28069M , TMS320F28069M-Q1 , TMS320F28075 , TMS320F28075-Q1 , TMS320F28332 , TMS320F28333 , TMS320F28334 , TMS320F28335 , TMS320F28335-Q1 , TMS320F28374D , TMS320F28374S , TMS320F28375D , TMS320F28375S , TMS320F28375S-Q1 , TMS320F28376D , TMS320F28376S , TMS320F28377D , TMS320F28377D-EP , TMS320F28377D-Q1 , TMS320F28377S , TMS320F28377S-Q1 , TMS320F28379D , TMS320F28379D-Q1 , TMS320F28379S , TMS320F28P550SG , TMS320F28P550SJ , TMS320F28P559SG-Q1 , TMS320F28P559SJ-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Programming Fundamentals
  6. 3ROM Bootloader
  7. 4Flash Kernel A
    1. 4.1 Implementation
      1. 4.1.1 Application Load
  8. 5Flash Kernel B
    1. 5.1 Implementation
      1. 5.1.1 Packet Format
      2. 5.1.2 CPU1 Kernel Commands
      3. 5.1.3 CPU2 Kernel Commands
      4. 5.1.4 Packet Data
      5. 5.1.5 Status Codes
    2. 5.2 F2838x SCI Flash Kernels
      1. 5.2.1 CPU1-CPU2 Kernels
        1. 5.2.1.1 Kernel Commands
      2. 5.2.2 CPU1-CM Kernels
        1. 5.2.2.1 Kernel Commands
      3. 5.2.3 Using the Projects With SCI Bootloader
        1. 5.2.3.1 CPU1-CPU2
        2. 5.2.3.2 CPU1-CM
      4. 5.2.4 Using the Projects With Code Composer Studio (CCS) Software
        1. 5.2.4.1 CPU1-CPU2
        2. 5.2.4.2 CPU1-CM
    3. 5.3 F28P65x SCI Flash Kernel
      1. 5.3.1 CPU1 Kernel
        1. 5.3.1.1 Host-Kernel Communication: ControlCard
        2. 5.3.1.2 Host-Kernel Communication: LaunchPad Development Kit
        3. 5.3.1.3 Kernel Commands
      2. 5.3.2 Using the Projects With SCI Bootloader
        1. 5.3.2.1 CPU1
      3. 5.3.3 Using the Projects With CCS
        1. 5.3.3.1 CPU1
    4. 5.4 F28P55x SCI Flash Kernel
      1. 5.4.1 Implementation
        1. 5.4.1.1 Specifying the Flash Banks and Sectors of the Application
      2. 5.4.2 Kernel
      3. 5.4.3 Using the Project With SCI Bootloader
      4. 5.4.4 Using the Project with CCS
  9. 6Example Implementation
    1. 6.1 Device Setup
      1. 6.1.1 Flash Kernels
      2. 6.1.2 Hardware
    2. 6.2 Host Application: serial_flash_programmer
      1. 6.2.1 Overview
      2. 6.2.2 Building and Running serial_flash_programmer Using Visual Studio
      3. 6.2.3 Running serial_flash_programmer for F2806x (Flash Kernel A)
      4. 6.2.4 Running serial_flash_programmer for F2837xD (Flash Kernel B)
    3. 6.3 Host Application: Firmware Updates on F28004x With SCI Flash Kernel
      1. 6.3.1 Overview
      2. 6.3.2 Boot Pin Configurations
      3. 6.3.3 Using Three Boot Modes
      4. 6.3.4 Performing Live Firmware Updates
  10. 7Troubleshooting
    1. 7.1 General
    2. 7.2 SCI Boot
    3. 7.3 F2837x
      1. 7.3.1 F2837xS
      2. 7.3.2 F2837xD
      3. 7.3.3 F2837xD LaunchPad™
    4. 7.4 F28P65x
  11. 8References
  12. 9Revision History

6.3.2 Boot Pin Configurations

To have both of the boot modes for flash Boot and SCI boot, the boot mode needs to be configured. The boot control GPIO Pins determine the boot mode configuration - for F28004x devices, the Boot control Pins are GPIO 24 and GPIO 32. To boot from flash, both GPIO 24 and GPIO 32 have to be pulled up to 1, and for SCI Boot, GPIO 24 needs to be pulled down to 0.

How a user pulls down the GPIO pin depends on the implementation - one possible example is that the device sets the GPIO pin low prior to a firmware upgrade - more details can be found in [10] .