SPMA083 January   2022 TM4C129CNCPDT , TM4C129CNCPDT , TM4C129CNCZAD , TM4C129CNCZAD , TM4C129DNCPDT , TM4C129DNCPDT , TM4C129DNCZAD , TM4C129DNCZAD , TM4C129EKCPDT , TM4C129EKCPDT , TM4C129ENCPDT , TM4C129ENCPDT , TM4C129ENCZAD , TM4C129ENCZAD , TM4C129LNCZAD , TM4C129LNCZAD , TM4C129XKCZAD , TM4C129XKCZAD , TM4C129XNCZAD , TM4C129XNCZAD

 

  1.   Trademarks
  2. 1Implementation
    1. 1.1 Flash Boot Loader Project
      1. 1.1.1 Changes to the Example Project boot_serial
        1. 1.1.1.1 Changes to bl_config.h
        2. 1.1.1.2 New Functions Added
          1. 1.1.1.2.1 MyCheckUpdateFunc
          2. 1.1.1.2.2 MyReinitFunc
          3. 1.1.1.2.3 MyEndFunc
          4. 1.1.1.2.4 MyDecryptionFunc
    2. 1.2 Image Creation Project
    3. 1.3 Key Image Project
    4. 1.4 EK-TM4C129EXL Example Application Project
    5. 1.5 DK-TM4C129X Example Application Project
    6. 1.6 RAM-Based EEPROM Erase Project
  3. 2Example Walk Through
    1. 2.1 Build Environment
    2. 2.2 Importing the Examples into Code Composer Studio
    3. 2.3 Setting Keys and Variables
      1. 2.3.1 Keys
      2. 2.3.2 Initialization Vector
      3. 2.3.3 Application Start Address and Flash Size
        1. 2.3.3.1 APP_BASE
        2. 2.3.3.2 APP_END
        3. 2.3.3.3 RAM_BASE
    4. 2.4 Running the shared_key_image_encrypt Tool
    5. 2.5 Running the Shared Key Serial Boot Loader
      1. 2.5.1 Programming the Boot Loader
        1. 2.5.1.1 Erasing Existing Code and Keys
          1. 2.5.1.1.1 Erasing Flash and EEPROM With Code Composer Studio
          2. 2.5.1.1.2 Erasing Flash and EEPROM by Using the Unlock Procedure
        2. 2.5.1.2 Using the ROM Boot Loader to Program the Shared Key Boot Loader
      2. 2.5.2 Using the Shared Key Boot Loader to Program the Application Code
    6. 2.6 Returning to the Boot Loader
  4. 3Summary
2.5.1.1.1 Erasing Flash and EEPROM With Code Composer Studio
  1. To erase the flash, select “Tools” -> “On-Chip Flash” from the pulldown menu. Enter the proper crystal frequency. It is 25 MHz for the EK-TM4C129EXL LaunchPad Development Kit. In the erase section make sure “Entire Flash” is selected, then click the “Erase Flash” button.
    GUID-20211209-SS0I-BZTB-GZSS-R3BLBQTXF7LJ-low.pngFigure 2-15 Erasing Flash with Code Composer Studio
  2. To erase the EEPROM, load and execute the eeprom_erase program that was loaded into the workspace with this document’s collateral. From the pulldown menu select “Run” -> “Load” -> “Select Program to Load”. Then click “Browse project”. Select the file eeprom_erase\Debug\eeprom_erase.out, then click “OK”.
  3. Click OK again to load and execute the eeprom_erase program.
    GUID-20211209-SS0I-XM2Q-MKL7-4GQGR0XHXX6B-low.pngFigure 2-16 Loading eeprom_erase.out
  4. Two LEDs on the LaunchPad will blink indicating that the program ran and erased the EEPROM.