TMS320F28379D: bootloader jumped to application code then it is going to illigal_isroperation_handler.

basweshwar hedgire

Prodigy 190 points

Part Number: TMS320F28379D

just done with bootloader code. when this bootloader will jump to application code stored in flash.

by using.

asm(" LB 0X0A0000");

this instruction .

after executing this instruction it will jump to given address and start fetching opcodes .

but when it will reach for fetching main() function opcode it is going for illigal_isroperation_handler.

i dont know how to handle this please give any solution for this.

over 5 years ago

0 Krishna Allam over 5 years ago

TI__Expert 7985 points

Hi Basweshwar,

Have you been able to single step through the code to see if the destination address has valid code? Can you please describe in more detail what code executes before and after the instruction asm(" LB 0X0A0000"); executes.

Thanks,
Krishna

0 basweshwar hedgire over 5 years ago in reply to Krishna Allam

Prodigy 190 points

thanks for reply krishna,

i am trying to implement a second stage bootloader for tms320f28379D by using I2C communication.

where my controller will behave slave receiver and by using master i will send hex opcodes of application code to second stage bootloader and it will write it into flash sectors as provided block size and block address. till this it is done .

then for jumping to the entry point i am using this asm(" LB 0X0A0000"); instruction.

but when it jump to application code . i dont know what is happening but it will start executing second stage bootloader code from main.

0 Krishna Allam over 5 years ago in reply to basweshwar hedgire

TI__Expert 7985 points

Hi Basweshwar,

I will close this issue since we are already talking about it here:

https://e2e.ti.com/support/microcontrollers/c2000/f/171/t/973516

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F28379D: bootloader jumped to application code then it is going to illigal_isroperation_handler.