nrf52 ble-app-uart-c-multilink Connection issue

RE: nrf52 ble-app-uart-c-multilink Connection issue

NTT — Mon, 26 Jul 2021 12:05:13 GMT

hi, Amanda, you're well. But i have problem, I run this example on SDK17 and also got this error (that MasterLee has described), I did your guide but it still not work: "00> <warning> ble_nus_c: Connection handle invalid"

If i change: #define ECHOBACK_BLE_UART_DATA 1 to 0 (in main.c) --> it work. But i think it is not great solution, please help me.

Thank you so much!

RE: nrf52 ble-app-uart-c-multilink Connection issue

masterLee — Thu, 20 Aug 2020 12:17:45 GMT

It worked! Thank you very much Amanda and thank you for your time!

One last question why do we have to modify the RAM ?

RE: nrf52 ble-app-uart-c-multilink Connection issue

masterLee — Thu, 20 Aug 2020 12:06:14 GMT

I will make the changes and I will inform you. Thank you

RE: nrf52 ble-app-uart-c-multilink Connection issue

Amanda Hsieh — Thu, 20 Aug 2020 12:04:27 GMT

Hi,

Please modify NRF_SDH_BLE_PERIPHERAL_LINK_COUNT and NRF_SDH_BLE_CENTRAL_LINK_COUNT number in sdk_config.h of nrf52-ble-app-uart-c-multilink.

// <o> NRF_SDH_BLE_PERIPHERAL_LINK_COUNT - Maximum number of peripheral links. 
#ifndef NRF_SDH_BLE_PERIPHERAL_LINK_COUNT
#define NRF_SDH_BLE_PERIPHERAL_LINK_COUNT 2
#endif

// <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 2
#endif

// <o> NRF_SDH_BLE_TOTAL_LINK_COUNT - Total link count. 
// <i> Maximum number of total concurrent connections using the default configuration.

#ifndef NRF_SDH_BLE_TOTAL_LINK_COUNT
#define NRF_SDH_BLE_TOTAL_LINK_COUNT 4
#endif

Modify the RAM_START to 0x200056C0 and RAM_SIZE to 0x3A940 via right click on the porject_name -> option -> Common -> Linker -> Section Placement Macros as the following figure.

-Amanda H.