I am wondering I understand your question correctly or not.

The clock stretching/extension is specified in the spec of I2C (section 3.1.9).

https://www.nxp.com/docs/en/user-guide/UM10204.pdf

http://smbus.org/specs/

I am wondering I understand your question correctly or not.

The clock stretching/extension is specified in the spec of I2C (section 3.1.9).

https://www.nxp.com/docs/en/user-guide/UM10204.pdf

Thanks for your sharing your founding here.

Yes, there are some alignment requirement for the VTOR. you could take a look at the page like below:

http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0552a/Ciheijba.html

As far as I know this is a known issue for the emlib.

You could take a look at the file em_iadac.c.

As far as I know this is a known issue for the emlib.

You could take a look at the file em_iadac.c.

Sorry, it is my fault.

The LFXO and LFRCO was not available in EM2. It was available in EM3. The TIMER need HF clock and that's the reason they could not work under EM2.

Sorry I did not catch your point here:

The output toggle must be enable for the interrupt to occur, even if you are not physically toggling a pin

by the way, it looks an 10mS interrupt (with LETIMER clocked by 32.768kHz). i am wondering if you have tight accuracy requirement on the 10mS. The 32.768kHz was not divisible by 100Hz (without remainder). you may get some period close to 10mS but exact 10mS.

which device you are working with, EFM32TG11(EFM32 series 1) or EFM32TG (EFM32 series 0)?

i guess you are working on EFM32TG series 0.

have you confirmed the bootloader present on the device? the bootlaoder is erasable.

You may take a look at the AN0003, try to program the bootlaoder first and then upgrade your application.

Be sure the start address of your application match the bootloader requirement.

Thanks for your sharing your founding here.

Yes, there are some alignment requirement for the VTOR. you could take a look at the page like below:

http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0552a/Ciheijba.html

Yes, the example in the gitHub was simple example that don't enable any stack.

to import and build the example in github you may read the readme first, IIRC you need to put the example in a specific folder.