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F28069: Wake up from standby using watchdog timer

Filipe Teixeira
Prodigy 235 points

Hello,

I am evaluating the LPMs of the F28069. I am currently using the example Example_2806xStandbyWake.

I have noticed a small error there, the assignment of:

SysCtrlRegs.LPMCR0.bit.QUALSTDBY = 5;

is EALLOW protected and in the example the EALLOW and EDIS are not called.

I have managed to run the example and wake the device using the GPIO00. After adding some code to disable the FLASH I got the same consumption values of the datasheet.

Now I am trying to wake up the device using the watchdog.

I have programmed the watchdog to generate an interrupt, that is serviced in  PieVectTable.WAKEINT and this part is working, the watchdog is generating the interrupts.

Now when I enter the STANDBY mode, the watchdog does not wake up the device (the interrupts are not generated).

What settings should be done to allow the watchdog to wake the device from STANDBY?

 

Best regards,

Filipe Teixeira 

http://www.kulzertec.com