pinebuds/services/ble_profiles/blp/blpc/src/blpc.c

/**
 ****************************************************************************************
 * @addtogroup BLPC
 * @{
 ****************************************************************************************
 */

/*
 * INCLUDE FILES
 ****************************************************************************************
 */
#include "rwip_config.h"

#if (BLE_BP_COLLECTOR)
#include "blpc.h"
#include "blpc_task.h"
#include "gap.h"

#include "co_utils.h"
#include "ke_mem.h"

/*
 * LOCAL FUNCTIONS DEFINITIONS
 ****************************************************************************************
 */

/**
 ****************************************************************************************
 * @brief Initialization of the BLPC module.
 * This function performs all the initializations of the Profile module.
 *  - Creation of database (if it's a service)
 *  - Allocation of profile required memory
 *  - Initialization of task descriptor to register application
 *      - Task State array
 *      - Number of tasks
 *      - Default task handler
 *
 * @param[out]    env        Collector or Service allocated environment data.
 * @param[in|out] start_hdl  Service start handle (0 - dynamically allocated),
 *only applies for services.
 * @param[in]     app_task   Application task number.
 * @param[in]     sec_lvl    Security level (AUTH, EKS and MI field of @see enum
 *attm_value_perm_mask)
 * @param[in]     param      Configuration parameters of profile collector or
 *service (32 bits aligned)
 *
 * @return status code to know if profile initialization succeed or not.
 ****************************************************************************************
 */
static uint8_t blpc_init(struct prf_task_env *env, uint16_t *start_hdl,
                         uint16_t app_task, uint8_t sec_lvl, void *params) {
  uint8_t idx;
  //-------------------- allocate memory required for the profile
  //---------------------

  struct blpc_env_tag *blpc_env = (struct blpc_env_tag *)ke_malloc(
      sizeof(struct blpc_env_tag), KE_MEM_ATT_DB);

  // allocate BLPC required environment variable
  env->env = (prf_env_t *)blpc_env;

  blpc_env->prf_env.app_task =
      app_task | (PERM_GET(sec_lvl, SVC_MI) ? PERM(PRF_MI, ENABLE)
                                            : PERM(PRF_MI, DISABLE));
  blpc_env->prf_env.prf_task = env->task | PERM(PRF_MI, ENABLE);

  // initialize environment variable
  env->id = TASK_ID_BLPC;
  blpc_task_init(&(env->desc));

  for (idx = 0; idx < BLPC_IDX_MAX; idx++) {
    blpc_env->env[idx] = NULL;
    // service is ready, go into an Idle state
    ke_state_set(KE_BUILD_ID(env->task, idx), BLPC_FREE);
  }

  return GAP_ERR_NO_ERROR;
}

/**
 ****************************************************************************************
 * @brief Clean-up connection dedicated environment parameters
 * This function performs cleanup of ongoing operations
 * @param[in|out]    env        Collector or Service allocated environment data.
 * @param[in]        conidx     Connection index
 * @param[in]        reason     Detach reason
 ****************************************************************************************
 */
static void blpc_cleanup(struct prf_task_env *env, uint8_t conidx,
                         uint8_t reason) {
  struct blpc_env_tag *blpc_env = (struct blpc_env_tag *)env->env;

  // clean-up environment variable allocated for task instance
  if (blpc_env->env[conidx] != NULL) {
    ke_free(blpc_env->env[conidx]);
    blpc_env->env[conidx] = NULL;
  }

  /* Put BLP Client in Free state */
  ke_state_set(KE_BUILD_ID(env->task, conidx), BLPC_FREE);
}

/**
 ****************************************************************************************
 * @brief Destruction of the BLPC module - due to a reset for instance.
 * This function clean-up allocated memory (attribute database is destroyed by
 *another procedure)
 *
 * @param[in|out]    env        Collector or Service allocated environment data.
 ****************************************************************************************
 */
static void blpc_destroy(struct prf_task_env *env) {
  uint8_t idx;
  struct blpc_env_tag *blpc_env = (struct blpc_env_tag *)env->env;

  // cleanup environment variable for each task instances
  for (idx = 0; idx < BLPC_IDX_MAX; idx++) {
    blpc_cleanup(env, idx, 0);
  }

  // free profile environment variables
  env->env = NULL;
  ke_free(blpc_env);
}

/**
 ****************************************************************************************
 * @brief Handles Connection creation
 *
 * @param[in|out]    env        Collector or Service allocated environment data.
 * @param[in]        conidx     Connection index
 ****************************************************************************************
 */
static void blpc_create(struct prf_task_env *env, uint8_t conidx) {
  /* Put BLP Client in Idle state */
  ke_state_set(KE_BUILD_ID(env->task, conidx), BLPC_IDLE);
}

/// BLPC Task interface required by profile manager
const struct prf_task_cbs blpc_itf = {
    blpc_init,
    blpc_destroy,
    blpc_create,
    blpc_cleanup,
};

/*
 * GLOBAL FUNCTIONS DEFINITIONS
 ****************************************************************************************
 */

const struct prf_task_cbs *blpc_prf_itf_get(void) { return &blpc_itf; }

/*
 * EXPORTED FUNCTIONS DEFINITIONS
 ****************************************************************************************
 */

void blpc_enable_rsp_send(struct blpc_env_tag *blpc_env, uint8_t conidx,
                          uint8_t status) {
  // Send to APP the details of the discovered attributes on BLPS
  struct blpc_enable_rsp *rsp = KE_MSG_ALLOC(
      BLPC_ENABLE_RSP, prf_dst_task_get(&(blpc_env->prf_env), conidx),
      prf_src_task_get(&(blpc_env->prf_env), conidx), blpc_enable_rsp);

  rsp->status = status;

  if (status == GAP_ERR_NO_ERROR) {
    rsp->bps = blpc_env->env[conidx]->bps;

    prf_register_atthdl2gatt(&(blpc_env->prf_env), conidx,
                             &(blpc_env->env[conidx]->bps.svc));

    // Go to connected state
    ke_state_set(prf_src_task_get(&(blpc_env->prf_env), conidx), BLPC_IDLE);
  }

  ke_msg_send(rsp);
}

void blpc_unpack_meas_value(struct bps_bp_meas *pmeas_val, uint8_t *packed_bp) {
  uint8_t cursor;

  // blood pressure measurement flags
  pmeas_val->flags = packed_bp[0];

  // Blood Pressure Measurement Compound Value - Systolic
  pmeas_val->systolic = co_read16p(&(packed_bp[1]));

  // Blood Pressure Measurement Compound Value - Diastolic (mmHg)
  pmeas_val->diastolic = co_read16p(&(packed_bp[3]));

  //  Blood Pressure Measurement Compound Value - Mean Arterial Pressure (mmHg)
  pmeas_val->mean_arterial_pressure = co_read16p(&(packed_bp[5]));

  cursor = 7;

  // time flag set
  if ((pmeas_val->flags & BPS_FLAG_TIME_STAMP_PRESENT) ==
      BPS_FLAG_TIME_STAMP_PRESENT) {
    cursor +=
        prf_unpack_date_time(packed_bp + cursor, &(pmeas_val->time_stamp));
  }

  // pulse rate flag set
  if ((pmeas_val->flags & BPS_FLAG_PULSE_RATE_PRESENT) ==
      BPS_FLAG_PULSE_RATE_PRESENT) {
    pmeas_val->pulse_rate = co_read16p(&(packed_bp[cursor + 0]));
    cursor += 2;
  }

  // User ID flag set
  if ((pmeas_val->flags & BPS_FLAG_USER_ID_PRESENT) ==
      BPS_FLAG_USER_ID_PRESENT) {
    pmeas_val->user_id = packed_bp[cursor + 0];
    cursor += 1;
  }

  // measurement status flag set
  if ((pmeas_val->flags & BPS_FLAG_MEAS_STATUS_PRESENT) ==
      BPS_FLAG_MEAS_STATUS_PRESENT) {
    pmeas_val->meas_status = co_read16p(&(packed_bp[cursor + 0]));
    cursor += 2;
  }
}

#endif /* (BLE_BP_COLLECTOR) */

/// @} BLPC