Kinetis MicrocontrollersのトピックTrouble waking KL03 using 10-bit I2C in VLPS mode

Trouble waking KL03 using 10-bit I2C in VLPS mode

kyledickerson — Thu, 11 May 2017 22:23:50 GMT

I am having difficulty getting a KL03 slave to wake up from VLPS mode when using 10-bit I2C. The microcontroller wakes up just fine on address match in 7-bit I2C. I also have communication working using 10-bit I2C in VLPR mode. The IAAS interrupt fires using the 10-bit/VLPR, 7-bit/VLPS, and 7-bit/VLPR, but not 10-bit/VLPS. Is 10-bit I2C not available in VLPS mode? Or is there something else that needs to be done to get it to work. Thanks!

Re: Trouble waking KL03 using 10-bit I2C in VLPS mode

kerryzhou — Mon, 15 May 2017 03:16:58 GMT

Hi Kyle Dickerson,

From the reference manual description:

It just describes the primary address, no extended address, maybe it doesn't support the 10 bit wake up, but is not sure, I didn't test it before.

You can send me your test project, when I have time, I will also check it on my side. After reproduce it, I will check it with our according department.

Have a great day,
Kerry

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Re: Trouble waking KL03 using 10-bit I2C in VLPS mode

kyledickerson — Mon, 15 May 2017 23:37:42 GMT

Unfortunately I am unable to send you my project. My workaround is to set the KL03 slaves to 7-bit addressing, then have them switch to 10-bit addressing on wakeup. I only have KL03 slaves on the bus so this shouldn't be an issue. If I have the maximum of 1024 slaves on the bus, the worst that will happen is that at most, 8 slaves will be awake for a very brief time.