TMS320F28069M: Troubleshooting FLASH Build Errors for TMS320F28069M BLDC Motor Control

Dear TI Team,

I hope this email finds you well. I have been working on motor control using the TMS320F28069M microcontroller to drive a BLDC motor. For my custom hardware development, I referred to the DRV8301-69M-KIT.

Here are the key points of my project:

1. Hardware Reference:

   • I used the DRV8301-69M-KIT as my hardware reference. This evaluation board features the DRV8301 gate driver and the InstaSPIN-enabled Piccolo TMS320F28069M MCU. 

2. Motor Control Approach:

   • To achieve Field-Oriented Control (FOC) for my BLDC motor, I utilized INSTASPIN-BLDC. This software solution provides sensorless control for BLDC motors.

3. Custom Code Integration:

   • I successfully integrated my custom code into the proj_lab05g example from the MotorWare package. The code compiles and runs flawlessly in RAM.

4. FLASH Build Errors:

   • However, when I switch the build configuration to FLASH, I encounter errors. Specifically, I need assistance with resolving these issues. Unfortunately, I am unable to attach the screenshot directly to this email, but I  provided CCS screenshot error messages with this mail.
   • In the Code section, I got an error.
   • #ifdef FLASH
     #pragma CODE_SECTION(mainISR,"ramfuncs");
     #endif

5. Troubleshooting Steps:

   • I have already checked the memory configuration, initialization routines, and FLASH programming. However, I believe I might be missing something critical during the transition from RAM to FLASH.
   • Could you guide me on the correct initialization and boot code for FLASH builds?
   • Additionally, I would appreciate any insights into handling FLASH programming errors.

Thank you for your support, and I look forward to your guidance on resolving the FLASH build errors. If you need additional details or specific error messages, please let me know.

Best regards,

Ram Singh