How to get remaining time of shutdown counter on GPIO wakeup of PN7462

[pratikyadav]

Hello Kan_Li,

I am using PN7462 and to save power I am keeping Board into standby mode using phhalPcr_EnterLowPowerMode() API. 

I have configured 2 wakeup sources.

1. Timmer with 1.5 seconds

2. GPIO

I want to achieve the following system.

1) The board should be wake up after 1.5 seconds and perform the required task.

2) The board should wake up when a GPIO interrupt occurs.

3) On GPIO wakeup, if sleep time is not 1.5 seconds board should further go into sleep mode for the remaining period after performing the required operation.

ex: If GPIO interrupt occurs after 1 min then after wakeup and performing the task it should further go into sleep mode for 500 ms.

My question is there any way we can get wakeup counter value?

Let me know if you need more details regarding it.

[Kan_Li]

Hi @pratikyadav ,

Actually I am not sure what the functionality of your application is going to be, but how about holding the timer at the beginning of the GPIO task and resuming it in the end? Please kindly check Table 80. PCR_WAKEUP_CFG_REG (address offset 0x20) for more details.

Have a great day,
Kan

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[pratikyadav]

@Kan_Li , thanks for the quick response, we will test and let you know if we have any further queries regarding it.