Kinetis MicrocontrollersのトピックRe: Lin Stack - How to check for Wakeup request for Master on UART

Lin Stack - How to check for Wakeup request for Master on UART

vikasmalik22 — Mon, 25 Nov 2019 06:06:55 GMT

Hi,

I would like to know which flag or status, I can use in Lin Stack using UART to check when the UART isr is called on Master if there is a wakeup request or not.

Is there any API or flag to check this?

Thanks & Regards,

Vikas

Re: Lin Stack - How to check for Wakeup request for Master on UART

vikasmalik22 — Mon, 25 Nov 2019 06:48:28 GMT

The problem I am having is once the Master goes to sleep state conf->word_status.bit.gotosleep is set to 1.

But once I read the status of this bit using l_ifc_read_status() where it clears the status as below.

*((l_u16*)(conf->word_status)) = 0; and then it doesn't get updated when the wakeup calls or UART_ISR is being triggered.

Re: Lin Stack - How to check for Wakeup request for Master on UART

kerryzhou — Tue, 26 Nov 2019 06:45:30 GMT

Hi Vikas Malik ,

Sleep mode wake up recovery method is interrupt.

So, if you want to know the wake up, you can change a flag status in the ISR, then in the normal run code, you just need to check the flag in the ISR status, when the interrupt happens, the wakeup will happen.

I think you can define a flag by yourself, then use it.

Wish it helps you!

Have a great day,
Kerry

-------------------------------------------------------------------------------
Note:
- If this post answers your question, please click the "Mark Correct" button. Thank you!

- We are following threads for 7 weeks after the last post, later replies are ignored
Please open a new thread and refer to the closed one, if you have a related question at a later point in time.
-------------------------------------------------------------------------------

Re: Lin Stack - How to check for Wakeup request for Master on UART

vikasmalik22 — Tue, 26 Nov 2019 23:25:51 GMT

Hi Kerry,

Thanks for your reply. I will try that out.

Cheers,

Vikas

Re: Lin Stack - How to check for Wakeup request for Master on UART

kerryzhou — Wed, 27 Nov 2019 03:21:28 GMT

HI Vikas Malik

You are welcome!

After you test it, if you still have question about it, please kindly let me know.

Wish it helps you!

Have a great day,
Kerry

-------------------------------------------------------------------------------
Note:
- If this post answers your question, please click the "Mark Correct" button. Thank you!