how to extend useful space for adding a third library to my app

HI Kurbylee, we have customers who have modified the scatter files to extend memory : but its only to about adding another 5-6K from memory. Exactly how muhc do you need in total ? BR JE_Dialog

Hi Dialog team,

Would you also provide the guideline of extending the code execution area?
Below is the example of referring to scatter file of keyboard reference design, but I still need more space to resolve it.
I suppose that re-organization of the sections starting from RW_IRAM50 is required for my need.

-- my change of scatter file according to keyboard reference
;LR_IROM4 0x20000340 0x100 {
; ER_IROM4 0x20000340 0x100 {
; * (nvds_data_storage_area)
; }
;}
LR_IROM4 0x20000340 0xa4 {
ER_IROM4 0x20000340 0xa4 {
* (nvds_data_storage_area)
}
}

;LR_IROM5 0x20000440 0x93c0 {
; ER_IROM5 0x20000440 0x7ac0 {
LR_IROM5 0x200003e4 0x941c {
ER_IROM5 0x200003e4 0x7b1c {
*(InRoot$$Sections) ; All library sections that must be in a
; root region, for example, __main.o,
; __scatter*.o, __dc*.o, and * Region$$Table
boot_vectors.o (+RO)
system_ARMCM0.o (+RO)
;*armlib* (+RO)
.ANY (+RO)
.ANY (+RW)
}

Hi hardy.chen,

There is no document to describe how to rearrange the memory in order to gain space. You can check the UM-B-011: DA14580 Memory map and scatter file to have an idea how the da memory is organized. Also the memory re-arrange is depended on the sleep mode that you are willing to use (in extended sleep you have more options since there no need for retention) and if you use OTP or Flash memory. How much more space do you need ?

Thanks MT_dialog

Hi, Dialog team,

I've managed to extend the code space via modification of scatter file.
It's seems that there is no dependency with sitting ZI_AT_8000 to be fixed at 0x20008000.

This topic can be closed. Thanks!