CC2340R5: Set MAX_NUM_BLE_CONNS to 8 results in linker fail

Hello Alexandre,

Thanks for reaching out.

I am able to build the example as central for 8 connections without linker errors, have you modified the code further?

How are you increasing the number of connections?

Adding more connections uses more RAM and may require increasing Heap Size (Inside SysConfig -> FreeRTOS).

BR,

David.

Hello David

Thank you for taking the time to help.

I increase the number of connections inside this file: ti_utils_build_compiler.opt

-DHOST_CONFIG=CENTRAL_CFG
-DHCI_TL_NONE
-DATT_DELAYED_REQ
-DSYSCFG
-DMAX_NUM_BLE_CONNS=8
-DGATT_MAX_PREPARE_WRITES=5
-DEXTENDED_STACK_SETTINGS=EXTENDED_STACK_SETTINGS_DEFAULT
-DGAP_BOND_MGR
-DGAP_BONDINGS_MAX=1
-DPOWER_SAVING
-DSTACK_LIBRARY
-DONE_BLE_LIB_SIZE_OPTIMIZATION
-DICALL_EVENTS
-DICALL_JT
-DICALL_LITE
-DICALL_STACK0_ADDR
-DUSE_ICALL
-DICALL_MAX_NUM_ENTITIES=6
-DICALL_MAX_NUM_TASKS=3
-DOSAL_CBTIMER_NUM_TASKS=1
-DDeviceFamily_CC23X0R5

When I set the MAX_NUM_BLE_CONNS to 7 the linker does not present any error.

The heap size is the default one for this SDK project (0x4D50) as defined inside the FreeRTOSConfig.h file.

I did change some things in the code but nothing that consumes a lot of RAM space. For instance, I did create some global var buffers and structs to hold dataregarding the 8 connections total.

I did reduce some buffers and it seems to link with no errors now after I did increase the heap a little from 0x4D50 to 0x4D80

If I increase the heap size above 0x4D80 I get this error below:

Error[Lp015]: section placement failure: overcommitted content in [0x2000'0460-0x2000'8fff]

I´m starting to develop my app and I will certainly need to create more variables that will consume RAM memory. I´m pretty sure this will get back to haunt me when I start to create the full application towards my goal.

Any advices or good practice to follow to avoid this problem?

Hello Alexandre,

Could we do a quick test and use SysConfig (following the example image provided in the previous answer)?

BR,

David.

Yes David, I did follow the setup you did show in the previous image.

The results on my post above were done after modifying the syscfg file.

Do you need me to do anything else to test?

Hello Alexandre,

Alright, I see. Then setting the heap to 0x4D80 allows you to build the project for 8 connections. If you compare the amount of RAM consumed without modifying the project vs the one you get after the modifications you have added, how much would that be? You can take a look at the Memory Allocation after build in CCS here.

In addition, could you please try running the Runtime Object Viewer (debug mode) to measure what is the max heap you application is using?

BR,

David.