SPRAD51A December   2023  – April 2024 TMS320F2800157 , TMS320F280039 , TMS320F280039-Q1 , TMS320F280039C , TMS320F280039C-Q1 , TMS320F28P659DK-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Programming Fundamentals
  6. 3ROM Bootloader and Hex Utility Usage
  7. 4DCAN Flash Kernel
    1. 4.1 Implementation
      1. 4.1.1 Custom Flash Bank and Sector Erase
      2. 4.1.2 Application Load
  8. 5MCAN Flash Kernel
    1. 5.1 Implementation
      1. 5.1.1 Custom Flash Bank and Sector Erase
      2. 5.1.2 Application Load
  9. 6Example Implementation
    1. 6.1 Device Setup
      1. 6.1.1 Flash Kernels
      2. 6.1.2 Hardware
    2. 6.2 Host Application: dcan_flash_programmer
      1. 6.2.1 Overview
      2. 6.2.2 Building and Running dcan_flash_programmer Using Visual Studio
      3. 6.2.3 Running dcan_flash_programmer for F28003x
      4. 6.2.4 Using the Project With DCAN Bootloader
      5. 6.2.5 Using the Project With CCS
    3. 6.3 Host Application: can_flash_programmer [MCAN]
      1. 6.3.1 Overview
      2. 6.3.2 Building and Running can_flash_programmer Using Visual Studio
      3. 6.3.3 Running can_flash_programmer for F28003x
      4. 6.3.4 Using the Project With MCAN Bootloader
      5. 6.3.5 Using the Project With CCS
    4. 6.4 Application Load: CPU2 Image
      1. 6.4.1 Combining Two Images (.txt)
  10. 7Troubleshooting
    1. 7.1 General
    2. 7.2 DCAN Boot
    3. 7.3 MCAN Boot
  11. 8References
  12. 9Revision History

7.3 MCAN Boot

Question: For the F28P65x or F28P55x devices, I cannot download the application image following the download of the MCAN Flash kernel to RAM in MCAN boot mode, what should I do?

Answer: Make sure that the clock used in generation of the MCAN Flash kernel project is using the internal crystal oscillator known as INTOSC2 (device.h). At power-up, the device boot ROM is clocked from an on-chip 10MHz oscillator (INTOSC2). This value needs to be set as the primary internal clock source and is the default clock at reset.

Question: For the F28P65x device, I am able to download the application image following download of the MCAN Flash kernel to RAM in MCAN boot mode, but CPU2 is not able to execute its application. How can I resolve this?

Answer: CPU1's application image will have to set CPU2's selected banks, GSxRAM and give GPIO control to CPU2. CPU1 must then execute its application image before CPU2 executes its application image, otherwise, it can enter the illegal ISR section of memory. For more details on these items, consult the device-specific TRM [7].