SOFTDEVICE_HANDLER_INIT() problems

[K Jeong]

The firmware used operate properly in the past, but it no longer does after we replaced the MCU(nrf52832). During SOFTDEVICE_HANDLER_INIT, the MCU is stopped.

The previous chip: nrf52832 QFAAB0 1608AE/1645EG

The chips that malfucntion after the replacement are: nrf52832/QFAAB0/1619BL

They operated properly before the replacement. But after replacing the MCU, they do not.

Firmware, SDK, all can be downloaded.

static void ble_stack_init(void) {
    uint32_t err_code;
    uint32_t count = 0;
    //nrf_clock_lf_cfg_t clock_lf_cfg = NRF_CLOCK_LFCLKSRC;
    
    nrf_clock_lf_cfg_t clock_lf_cfg =  { .source = NRF_CLOCK_LF_SRC_SYNTH,
                                                       .rc_ctiv = 0, 
                                                       .rc_temp_ctiv = 0, 
                                                       .xtal_accuracy = NRF_CLOCK_LF_XTAL_ACCURACY_20_PPM
                                   };

    // Initialize the SoftDevice handler module.
    SOFTDEVICE_HANDLER_INIT(&clock_lf_cfg, NULL);

    ble_enable_params_t ble_enable_params;
    err_code = softdevice_enable_get_default_config(CENTRAL_LINK_COUNT,
                                                    PERIPHERAL_LINK_COUNT,
                                                    &ble_enable_params);
    
    APP_ERROR_CHECK(err_code);
    
    // Check the ram settings against the used number of links
    CHECK_RAM_START_ADDR(CENTRAL_LINK_COUNT, PERIPHERAL_LINK_COUNT);

    // Enable BLE stack.
#if (NRF_SD_BLE_API_VERSION == 3)
    ble_enable_params.gatt_enable_params.att_mtu = NRF_BLE_MAX_MTU_SIZE;
#endif
    err_code = softdevice_enable(&ble_enable_params);
    APP_ERROR_CHECK(err_code);

    // Register with the SoftDevice handler module for BLE events.
    err_code = softdevice_ble_evt_handler_set(ble_evt_dispatch);
    APP_ERROR_CHECK(err_code);

    // Register with the SoftDevice handler module for BLE events.
    err_code = softdevice_sys_evt_handler_set(sys_evt_dispatch);
    APP_ERROR_CHECK(err_code);

SOFTDEVICE_HANDLER_INIT(&clock_lf_cfg, NULL); is where the MCU error occurs.When it does, rebooting is repeatedly done. We have no clue as to why the previously oeprating firmware stops working after changing the MCU.

How do I solve this problem?

[MartinBL]

1. Are you using the same hex file both before and after? I.e. there are no changes in application and Softdevice code whatsoever?
2. How many failing samples do you have? And how many, if any, of the new samples work?
3. Have you tried to debug like this to see if the Softdevice returns any errors or asserts?
4. Did you desolder the old chips and then solder the new ones onto the same device? May something have gone wrong in this process?