nrf51822 qfaa has problem with eddystone example

[secondbest]

Hi;

I am using nrf51822 qfaa device with sdk12.3. I compiled eddystone example code and it worked with nrf51dk(nrf51422_qfac) board. Also, i have a board that has nrf51822_qfaa and it does not work with my eddystone code. I think that it is about ram size. My irom and iram setting is:

NRF51422 qfac IROM1: start:0x1B000 - size:0x25000(256kb) IRAM1: start:0x20003440 - size:0x4BC0(32kb)

NRF51822 qfaa IROM1: 0x1B000 - 0x25000(256kb) IRAM1: 0x20003440 - 0xBC0(16kb)

And also my code size is:

Code=31120 RO-data=2108 RW-data=356 ZI-data=5868

As seen in the above, ram size of the code is 5868+356= 6224 byte. However, nrf51822 ram size is 3008 byte(0x0bc0).

Is there method to use eddystone example with nrf51822_qfaa? Also, Is my calculation about iram correct?

Thanks and sorry for my bad english.

[MartinBL]

Hi,

Here is a great writeup about RAM and ROM management.

I suppose one solution might be to go back to an earlier SDK, like e.g. SDK 11. It has less features added to the example and is only experimental, but it seems like you can just about fit the example onto a QFAA chip. I think removing unnecessary features from the SDK 12.3 version will be a major hassle and it might not be possible to remove enough either.