AWR1642: Cannot write into VIM registers.

John Paul Fernandes3

Part Number: AWR1642

Hi,

I am using the AWR1642 EVM and want to program the VIM module to catch interrupts.I want to enable a certain interrupt channel using the REQENASET register. I have tried writing into this register but I the value in it does not get updated. This is for the MSS R4F core, with the core in System Mode.

Is there a particular sequence/initialisation to write this particular register?

Thanks,

John.

over 7 years ago

0 Raghunandan Kamath over 7 years ago

TI__Mastermind 22155 points

Hello John,

You need bring the VIM out of reset to write to VIM register set.

Below is the details in the TRM to bring the VIM out of reset:

Thanks,

Raghu

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0 John Paul Fernandes3 over 7 years ago in reply to Raghunandan Kamath

Prodigy 20 points

Hello Raghu,

Thanks for the reply. Unfortunately I think I am missing something. The VIM module resets successfully and is brought out of reset by writing the SOFTRST2:VIMRST with 0x00000000, but yet I cannot write anything in the registers. This is the same for the FIQPR registers as well as the REQENASET registers. Also I tried manually updating the values using the debugger, but it still remains the same(not updating).

Please suggest.

Thanks,
John.

0 Raghunandan Kamath over 7 years ago in reply to John Paul Fernandes3

TI__Mastermind 22155 points

The issue is resolved offline using below VIM baseaddress to access the VIM registers

MSS_VIM 0xFFFF_FE00 0xFFFF_FEFC 252B MSS_VIM (VIM) module configuration
Registers

-Raghu

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AWR1642: Cannot write into VIM registers.