Nordic51822 no external 32.768 k of crystals in the routine what configuration

[creator]

Nordic51822 no external 32.768 k of crystals in the routine what configuration

Use this routine nordic\nRF5_SDK_12.2.0_f012efa-3d\examples\ble_peripheral\ble_app_bps\pca10028\s130\arm5_no_packs

[Sigurd]

Hi,

If you don't have a 32.768k external crystal on your board, you need to configure the SoftDevice to use the internal 32.768k RC oscillator. In the function ble_stack_init() in main.c, change this snippet

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

to this:

nrf_clock_lf_cfg_t clock_lf_cfg = NRF_CLOCK_LFCLKSRC;
clock_lf_cfg.source = NRF_CLOCK_LF_SRC_RC;
clock_lf_cfg.rc_ctiv = 16;
clock_lf_cfg.rc_temp_ctiv = 2;

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

[creator]

thanks，is ok