Hello,
I've taken the example from the SDK 12.0.0 for RAM retention. I've added additional NRF_LOG statements to check if the RAM retention is happening. I do not have the softdevice enabled for my application. But it is not working.
See the main.c
At line number 184, I see that the value RAM_MEMORY_TEST_WORD is stored at RAM address RAM_MEMORY_TEST_ADDRESS. So after performing system off and then again wakeup using button 1, at line number 117, I expect that the value at address RAM_MEMORY_TEST_ADDRESS is displayed in the log. But this is not happening.
I have gone through the post here which talks about taking care of data being zeroed at startup. But even then, it did not work. I'm also attaching the linker file also here Example_App_gcc_nrf52.ld
I also tried with defining the variables using the following code hoping that this variable value will be retained at systemoff and at systemon. But it is not.
static uint8_t VarName __attribute__ ((section(".noinit")));
I also tried to make the changes based on the errata finding documented here in section 3.31. But even that did not help.
Could anyone of you please help? My requirement is to enable RAM retention for a section of memory without using softdevice.
Thanks in advance.
