topic Re: iMX257 : access the General Purpose Unsecured Status Register in order to monitor the wait mode in i.MX Processors

iMX257 : access the General Purpose Unsecured Status Register in order to monitor the wait mode

koichisakagami — Mon, 08 Feb 2016 09:12:17 GMT

Dear community,

We have been developing our product with iMX257.
We plan to use Wait Mode for low power consumption.
We would like to monitor the Wait state .

In reference manual (IMX25RM Rev. 2) ,
it seems that the GPUSR1(A_WFI bit ) indicates the ARM core standby wfi.

We would like to access the GPUSR1 registe with JTAG-ICE.

[Question]
What kind of method can we access GPUSR1 by?

We can not find the GPUSR1 register address .
How many value is the $BASE ?

Best Regards,
Koichi Sakagami

Re: iMX257 : access the General Purpose Unsecured Status Register in order to monitor the wait mode

Yuri — Tue, 09 Feb 2016 08:40:58 GMT

Hello,

The mentioned General Purpose Unsecured Status Registers are accessible only in
JTAG debug mode. It is not used for general user applications.

Have a great day,
Yuri

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Re: iMX257 : access the General Purpose Unsecured Status Register in order to monitor the wait mode

koichisakagami — Tue, 09 Feb 2016 08:59:42 GMT

Dear Yuri san,

Thank you for your answer.

Best Regards,

Koichi Sakagami