How could I rebuild the code for an NRF_CLOCK_LFCLKSRC_RC_250_PPM_250MS_CALIBRATION?
static void ble_stack_init(void)
{
uint32_t err_code;
nrf_clock_lf_cfg_t clock_lf_cfg = NRF_CLOCK_LFCLKSRC;
// 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.
err_code = softdevice_enable(&ble_enable_params);
APP_ERROR_CHECK(err_code);
}
// Low frequency clock source to be used by the SoftDevice
#define NRF_CLOCK_LFCLKSRC {.source = NRF_CLOCK_LF_SRC_XTAL, \
.rc_ctiv = 0, \
.rc_temp_ctiv = 0, \
.xtal_accuracy = NRF_CLOCK_LF_XTAL_ACCURACY_20_PPM}
/**@defgroup NRF_CLOCK_LF_XTAL_ACCURACY Clock accuracy * @{ */
#define NRF_CLOCK_LF_XTAL_ACCURACY_250_PPM (0) /* Default */
#define NRF_CLOCK_LF_XTAL_ACCURACY_500_PPM (1)
#define NRF_CLOCK_LF_XTAL_ACCURACY_150_PPM (2)
#define NRF_CLOCK_LF_XTAL_ACCURACY_100_PPM (3)
#define NRF_CLOCK_LF_XTAL_ACCURACY_75_PPM (4)
#define NRF_CLOCK_LF_XTAL_ACCURACY_50_PPM (5)
#define NRF_CLOCK_LF_XTAL_ACCURACY_30_PPM (6)
#define NRF_CLOCK_LF_XTAL_ACCURACY_20_PPM (7)
/** @} */
/**@defgroup NRF_CLOCK_LF_SRC Possible lfclk oscillator sources * @{ */
#define NRF_CLOCK_LF_SRC_RC (0) /**< LFCLK RC oscillator. */
#define NRF_CLOCK_LF_SRC_XTAL (1) /**< LFCLK crystal oscillator. */
#define NRF_CLOCK_LF_SRC_SYNTH (2) /**< LFCLK Synthesized from HFCLK. */
/** @} */
/** @} */
/** @addtogroup NRF_SDM_TYPES Types
* @{ */
/**@brief Type representing lfclk oscillator source. */
typedef struct
{
uint8_t source; /**< LF oscillator clock source, see @ref NRF_CLOCK_LF_SRC. */
uint8_t rc_ctiv; /**< Only for NRF_CLOCK_LF_SRC_RC: Calibration timer interval in 1/4 second
units (nRF51: 1-64, nRF52: 1-32).
@note To avoid excessive clock drift, 0.5 degrees Celsius is the
maximum temperature change allowed in one calibration timer
interval. The interval should be selected to ensure this.
@note Must be 0 if source is not NRF_CLOCK_LF_SRC_RC. */
uint8_t rc_temp_ctiv; /**< Only for NRF_CLOCK_LF_SRC_RC: How often (in number of calibration
intervals) the RC oscillator shall be calibrated if the temperature
hasn't changed.
0: Always calibrate even if the temperature hasn't changed.
1: Only calibrate if the temperature has changed (nRF51 only).
2-33: Check the temperature and only calibrate if it has changed,
however calibration will take place every rc_temp_ctiv
intervals in any case.
@note Must be 0 if source is not NRF_CLOCK_LF_SRC_RC.
@note For nRF52, the application must ensure calibration at least once
every 8 seconds to ensure +/-250ppm clock stability. The
recommended configuration for NRF_CLOCK_LF_SRC_RC on nRF52 is
rc_ctiv=16 and rc_temp_ctiv=2. This will ensure calibration at
least once every 8 seconds and for temperature changes of 0.5
degrees Celsius every 4 seconds. See the Product Specification
for the nRF52 device being used for more information.*/
uint8_t xtal_accuracy; /**< External crystal clock accuracy used in the LL to compute timing windows.
@note For the NRF_CLOCK_LF_SRC_RC clock source this parameter is ignored. */
} nrf_clock_lf_cfg_t;
/**@brief Fault Handler type.
*
* When certain unrecoverable errors occur within the application or SoftDevice the fault handler will be called back.
* The protocol stack will be in an undefined state when this happens and the only way to recover will be to
* perform a reset, using e.g. CMSIS NVIC_SystemReset().
*
* @note This callback is executed in HardFault context, thus SVC functions cannot be called from the fault callback.
*
* @param[in] id Fault identifier. See @ref NRF_FAULT_IDS.
* @param[in] pc The program counter of the instruction that triggered the fault.
* @param[in] info Optional additional information regarding the fault. Refer to each Fault identifier for details.
*/
typedef void (*nrf_fault_handler_t)(uint32_t id, uint32_t pc, uint32_t info);
Normally, I would write:
static void ble_stack_init(void)
{
uint32_t err_code;
// Initialize the SoftDevice handler module.
//SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_XTAL_20_PPM, NULL); XXX
SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_RC_250_PPM_250MS_CALIBRATION, 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.
err_code = softdevice_enable(&ble_enable_params);
APP_ERROR_CHECK(err_code);
}
But this does not work.
Thanks for help!
