TMS320F28027F: InstaSpin example project with password programmed

Jack Tan80

Dear Champs,

Currently I programmed password and lock device after the instaspin example(proj_lab11.out) programmed to device, but found that the device seems stuck in somewhere, the LED(GPIO34) didn't turn on. Can you please let me know what's the limitation of this project with password programmed?

over 7 years ago

0 Yanming Luo over 7 years ago

TI__Guru** 117270 points

1. As defined in the F2802x datasheet, suppose you had set the correct boot mode by pullup GPIO34 and TDO pins to high.
2. Allocate .stack and .ebss to unsecured RAM sections, like M0 and M1 in .cmd file.

0 Jack Tan80 over 7 years ago in reply to Yanming Luo

Mastermind 7160 points

Yanming,

I'm using the example project without any changes, there is no problem without password programmed. But it can't work after programming password, it's very easy to reproduce, can you please try?

Why does .stack and .ebss should be allocated to unsecured RAM?

0 Yanming Luo over 7 years ago in reply to Jack Tan80

TI__Guru** 117270 points

The instaSPIN-FOC code in ROM needs to use the stack and read some variables in RAM, that can't be accessed by instaSPIN functions if both are assigned in a secured RAM. Please follow the steps as I mentioned that should be ok.

0 Jack Tan80 over 7 years ago in reply to Yanming Luo

Mastermind 7160 points

Yes, it works after allocate .stack and .ebss to unsecured ram. Thanks...

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TMS320F28027F: InstaSpin example project with password programmed