#define NRF_CLOCK_LF_SRC_SYNTH (2) /**< LFCLK Synthesized from HFCLK. */
/** @} */
/** @} */
/** @addtogroup NRF_SDM_TYPES Types
* @{ */
/**@brief Type representing LFCLK oscillator source. */
typedefstruct
{
uint8_tsource;/**< LF oscillator clock source, see @ref NRF_CLOCK_LF_SRC. */
uint8_trc_ctiv;/**< Only for ::NRF_CLOCK_LF_SRC_RC: Calibration timer interval in 1/4 second
units (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_trc_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 (legacy - 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 +/-500 ppm 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_taccuracy;/**< External clock accuracy used in the LL to compute timing
windows, see @ref NRF_CLOCK_LF_ACCURACY.*/
}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().
* If the application returns from the fault handler the SoftDevice will call 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.
*
* @note When id is set to @ref NRF_FAULT_ID_APP_MEMACC, pc will contain the address of the instruction being executed at the time when
* the fault is detected by the CPU. The CPU program counter may have advanced up to 2 instructions (no branching) after the one that triggered the fault.
/**@brief Enables the SoftDevice and by extension the protocol stack.
*
* @note Some care must be taken if a low frequency clock source is already running when calling this function:
* If the LF clock has a different source then the one currently running, it will be stopped. Then, the new
* clock source will be started.
*
* @note This function has no effect when returning with an error.
*
* @post If return code is ::NRF_SUCCESS
* - SoC library and protocol stack APIs are made available.
* - A portion of RAM will be unavailable (see relevant SDS documentation).
* - Some peripherals will be unavailable or available only through the SoC API (see relevant SDS documentation).
* - Interrupts will not arrive from protected peripherals or interrupts.
* - nrf_nvic_ functions must be used instead of CMSIS NVIC_ functions for reliable usage of the SoftDevice.
* - Interrupt latency may be affected by the SoftDevice (see relevant SDS documentation).
* - Chosen low frequency clock source will be running.
*
* @param p_clock_lf_cfg Low frequency clock source and accuracy.
If NULL the clock will be configured as an RC source with rc_ctiv = 16 and .rc_temp_ctiv = 2
In the case of XTAL source, the PPM accuracy of the chosen clock source must be greater than or equal to the actual characteristics of your XTAL clock.
* @param fault_handler Callback to be invoked in case of fault, cannot be NULL.
*
* @retval ::NRF_SUCCESS
* @retval ::NRF_ERROR_INVALID_ADDR Invalid or NULL pointer supplied.
* @retval ::NRF_ERROR_INVALID_STATE SoftDevice is already enabled, and the clock source and fault handler cannot be updated.
* @retval ::NRF_ERROR_SDM_INCORRECT_INTERRUPT_CONFIGURATION SoftDevice interrupt is already enabled, or an enabled interrupt has an illegal priority level.
* @retval ::NRF_ERROR_SDM_LFCLK_SOURCE_UNKNOWN Unknown low frequency clock source selected.
* @retval ::NRF_ERROR_INVALID_PARAM Invalid clock source configuration supplied in p_clock_lf_cfg.
