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 * Copyright (c) Nordic Semiconductor ASA
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 *   contributors to this software may be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 *   4. This software must only be used in a processor manufactured by Nordic
 *   Semiconductor ASA, or in a processor manufactured by a third party that
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/**
  @defgroup nrf_sdm_api SoftDevice Manager API
  @{

  @brief APIs for SoftDevice management.

*/

/* Header guard */
#ifndef NRF_SDM_H__
#define NRF_SDM_H__

#include "nrf_svc.h"
#include "nrf.h"
#include "nrf_soc.h"
#include "nrf_error_sdm.h"

#ifdef __cplusplus
extern "C" {
#endif

/** @addtogroup NRF_SDM_DEFINES Defines
 * @{ */
#ifdef NRFSOC_DOXYGEN
//Stuff defined elsewere, to satisfy doxygen
#define MBR_SIZE 0
#warning test
#endif

/** @brief SoftDevice Manager SVC Base number. */
#define SDM_SVC_BASE 0x10

/** @brief Defines the SoftDevice Information Structure location (address) as an offset from
the start of the softdevice (without MBR)*/
#define SOFTDEVICE_INFO_STRUCT_OFFSET (0x2000)

/** @brief Defines the absolute Softdevice information structure location (address)*/
#define SOFTDEVICE_INFO_STRUCT_ADDRESS (SOFTDEVICE_INFO_STRUCT_OFFSET + MBR_SIZE)

/** @brief Defines the offset for Softdevice size value relative to Softdevice base address*/
#define SD_SIZE_OFFSET (SOFTDEVICE_INFO_STRUCT_OFFSET + 0x08)

/** @brief Defines the offset for FWID value relative to Softdevice base address*/
#define SD_FWID_OFFSET (SOFTDEVICE_INFO_STRUCT_OFFSET + 0x0C)

/** @brief Defines a macro for retreiving the actual Softdevice size value from a given base address
           use @ref MBR_SIZE when Softdevice is installed just above the MBR (the usual case)*/
#define SD_SIZE_GET(baseaddr) (*((uint32_t *) ((baseaddr) + SD_SIZE_OFFSET)))

/** @brief Defines a macro for retreiving the actual FWID value from a given base address
           use @ref MBR_SIZE when Softdevice is installed just above the MBR (the usual case)*/
#define SD_FWID_GET(baseaddr) ((*((uint32_t *) ((baseaddr) + SD_FWID_OFFSET))) & 0xFFFF)

/**@defgroup NRF_FAULT_ID_RANGES Fault ID ranges
 * @{ */
#define NRF_FAULT_ID_SD_RANGE_START     0x00000000            /**< SoftDevice ID range start. */
#define NRF_FAULT_ID_APP_RANGE_START    0x00001000            /**< Application ID range start. */
/**@} */

/**@defgroup NRF_FAULT_IDS Fault ID types
 * @{ */
#define NRF_FAULT_ID_SD_ASSERT    (NRF_FAULT_ID_SD_RANGE_START + 1)           /**< SoftDevice assertion. The info parameter will be set to 0x00000000. */
#define NRF_FAULT_ID_APP_MEMACC   (NRF_FAULT_ID_APP_RANGE_START + 1)          /**< Application invalid memory access. The info parameter will contain the address in memory that was accessed. */
/** @} */

/** @} */

/** @addtogroup NRF_SDM_ENUMS Enumerations
 * @{ */

/**@brief nRF SoftDevice Manager API SVC numbers. */
enum NRF_SD_SVCS
{
  SD_SOFTDEVICE_ENABLE = SDM_SVC_BASE, /**< ::sd_softdevice_enable */
  SD_SOFTDEVICE_DISABLE,               /**< ::sd_softdevice_disable */
  SD_SOFTDEVICE_IS_ENABLED,            /**< ::sd_softdevice_is_enabled */
  SD_SOFTDEVICE_VECTOR_TABLE_BASE_SET, /**< ::sd_softdevice_vector_table_base_set */
  SVC_SDM_LAST                         /**< Placeholder for last SDM SVC */
};

/** @} */

/** @addtogroup NRF_SDM_DEFINES Defines
 * @{ */

/**@defgroup NRF_CLOCK_LF_XTAL_ACCURACY Clock accuracy
 * @{ */

#define NRF_CLOCK_LF_XTAL_ACCURACY_250_PPM (0) /**< Default: 250 ppm */
#define NRF_CLOCK_LF_XTAL_ACCURACY_500_PPM (1) /**< 500 ppm */
#define NRF_CLOCK_LF_XTAL_ACCURACY_150_PPM (2) /**< 150 ppm */
#define NRF_CLOCK_LF_XTAL_ACCURACY_100_PPM (3) /**< 100 ppm */
#define NRF_CLOCK_LF_XTAL_ACCURACY_75_PPM  (4) /**< 75 ppm */
#define NRF_CLOCK_LF_XTAL_ACCURACY_50_PPM  (5) /**< 50 ppm */
#define NRF_CLOCK_LF_XTAL_ACCURACY_30_PPM  (6) /**< 30 ppm */
#define NRF_CLOCK_LF_XTAL_ACCURACY_20_PPM  (7) /**< 20 ppm */

/** @} */

/**@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);

/** @} */

/** @addtogroup NRF_SDM_FUNCTIONS Functions
 * @{ */

/**@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.
 *
 * @retval ::NRF_SUCCESS
 * @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.
 */
SVCALL(SD_SOFTDEVICE_ENABLE, uint32_t, sd_softdevice_enable(nrf_clock_lf_cfg_t const * p_clock_lf_cfg, nrf_fault_handler_t fault_handler));


/**@brief Disables the SoftDevice and by extension the protocol stack.
 *
 * Idempotent function to disable the SoftDevice.
 *
 * @post SoC library and protocol stack APIs are made unavailable.
 * @post All interrupts that was protected by the SoftDevice will be disabled and initialized to priority 0 (highest).
 * @post All peripherals used by the SoftDevice will be reset to default values.
 * @post All of RAM become available.
 * @post All interrupts are forwarded to the application.
 * @post LFCLK source chosen in ::sd_softdevice_enable will be left running.
 *
 * @retval ::NRF_SUCCESS
 */
SVCALL(SD_SOFTDEVICE_DISABLE, uint32_t, sd_softdevice_disable(void));

/**@brief Check if the SoftDevice is enabled.
 *
 * @param[out]  p_softdevice_enabled If the SoftDevice is enabled: 1 else 0.
 *
 * @retval ::NRF_SUCCESS
 */
SVCALL(SD_SOFTDEVICE_IS_ENABLED, uint32_t, sd_softdevice_is_enabled(uint8_t * p_softdevice_enabled));

/**@brief Sets the base address of the interrupt vector table for interrupts forwarded from the SoftDevice
 *
 * This function is only intended to be called when a bootloader is enabled.
 *
 * @param[in] address The base address of the interrupt vector table for forwarded interrupts.

 * @retval ::NRF_SUCCESS
 */
SVCALL(SD_SOFTDEVICE_VECTOR_TABLE_BASE_SET, uint32_t, sd_softdevice_vector_table_base_set(uint32_t address));

/** @} */

#ifdef __cplusplus
}
#endif
#endif // NRF_SDM_H__

/**
  @}
*/
