NRF52832 Maximum number of central links

[muyang]

HI, I found that the maximum number of connections 52832 can only be 15 connections, like this

// <o> NRF_SDH_BLE_CENTRAL_LINK_COUNT - Maximum number of central links. 
#ifndef NRF_SDH_BLE_CENTRAL_LINK_COUNT
#define NRF_SDH_BLE_CENTRAL_LINK_COUNT 15
#endif

When I set up more than 15 when the compiler will be wrong, I would like to know what method can set the maximum number of links to 20

I am using the example is ：

nRF5_SDK_14.1.0_1dda907\examples\ble_central\ble_app_multilink_central\pca10040\s132\arm5_no_packs

[muyang]

Thank you for the quick reply to the instructions, as you described the way I added the macro definition now that can be compiled through like this

#define MACRO_REPEAT_FOR_15(n_list, macro, ...) macro(GET_VA_ARG_1(BRACKET_EXTRACT(n_list)), __VA_ARGS__) MACRO_REPEAT_FOR_14((GET_ARGS_AFTER_1(BRACKET_EXTRACT(n_list))), macro, __VA_ARGS__)
#define MACRO_REPEAT_FOR_16(n_list, macro, ...) macro(GET_VA_ARG_1(BRACKET_EXTRACT(n_list)), __VA_ARGS__) MACRO_REPEAT_FOR_15((GET_ARGS_AFTER_1(BRACKET_EXTRACT(n_list))), macro, __VA_ARGS__)
#define MACRO_REPEAT_FOR_17(n_list, macro, ...) macro(GET_VA_ARG_1(BRACKET_EXTRACT(n_list)), __VA_ARGS__) MACRO_REPEAT_FOR_16((GET_ARGS_AFTER_1(BRACKET_EXTRACT(n_list))), macro, __VA_ARGS__)
#define MACRO_REPEAT_FOR_18(n_list, macro, ...) macro(GET_VA_ARG_1(BRACKET_EXTRACT(n_list)), __VA_ARGS__) MACRO_REPEAT_FOR_17((GET_ARGS_AFTER_1(BRACKET_EXTRACT(n_list))), macro, __VA_ARGS__)
#define MACRO_REPEAT_FOR_19(n_list, macro, ...) macro(GET_VA_ARG_1(BRACKET_EXTRACT(n_list)), __VA_ARGS__) MACRO_REPEAT_FOR_18((GET_ARGS_AFTER_1(BRACKET_EXTRACT(n_list))), macro, __VA_ARGS__)
#define MACRO_REPEAT_FOR_20(n_list, macro, ...) macro(GET_VA_ARG_1(BRACKET_EXTRACT(n_list)), __VA_ARGS__) MACRO_REPEAT_FOR_19((GET_ARGS_AFTER_1(BRACKET_EXTRACT(n_list))), macro, __VA_ARGS__)

[Johannes]

I tried this too, but for any link count > 16 I'm getting a compiler error:

compiling main.c...
..\..\..\main.c(94): error: #29: expected an expression

LE_LBS_C_ARRAY_DEF(m_lbs_c, NRF_SDH_BLE_CENTRAL_LINK_COUNT); /**< LED Button client instances. */
..\..\..\main.c(95): error: #29: expected an expression

LE_DB_DISCOVERY_ARRAY_DEF(m_db_disc, NRF_SDH_BLE_CENTRAL_LINK_COUNT); /**< Database discovery module instances. */
..\..\..\main.c: 0 warnings, 2 errors

[Jørgen Holmefjord]

Please make sure you have modified everything as described here. If you do not get it to work, please post a new question where you described your issue in details.