pinebuds/services/ble_profiles/blp/blps/src/blps_task.c

/**
 ****************************************************************************************
 * @addtogroup BLPSTASK
 * @{
 ****************************************************************************************
 */

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

#if (BLE_BP_SENSOR)
#include "co_utils.h"

#include "blps.h"
#include "blps_task.h"
#include "gap.h"
#include "gattc_task.h"
#include "prf_utils.h"

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

/**
 ****************************************************************************************
 * @brief Handles reception of the @ref BLPS_ENABLE_REQ message.
 * The handler enables the Blood Pressure Sensor Profile and initialize readable
 *values.
 * @param[in] msgid Id of the message received (probably unused).off
 * @param[in] param Pointer to the parameters of the message.
 * @param[in] dest_id ID of the receiving task instance (probably unused).
 * @param[in] src_id ID of the sending task instance.
 * @return If the message was consumed or not.
 ****************************************************************************************
 */
__STATIC int blps_enable_req_handler(ke_msg_id_t const msgid,
                                     struct blps_enable_req const *param,
                                     ke_task_id_t const dest_id,
                                     ke_task_id_t const src_id) {
  // Get the address of the environment
  struct blps_env_tag *blps_env = PRF_ENV_GET(BLPS, blps);

  // Status
  uint8_t status = PRF_ERR_REQ_DISALLOWED;

  if (gapc_get_conhdl(param->conidx) == GAP_INVALID_CONHDL) {
    status = PRF_ERR_DISCONNECTED;
  } else if (ke_state_get(dest_id) == BLPS_IDLE) {
    if (param->interm_cp_ntf_en == PRF_CLI_START_NTF) {
      // Enable Bonded Data
      blps_env->prfl_ntf_ind_cfg[param->conidx] |= BLPS_INTM_CUFF_PRESS_NTF_CFG;
    }

    if (param->bp_meas_ind_en == PRF_CLI_START_IND) {
      // Enable Bonded Data
      blps_env->prfl_ntf_ind_cfg[param->conidx] |= BLPS_BP_MEAS_IND_CFG;
    }

    status = GAP_ERR_NO_ERROR;
  }

  // send completed information to APP task that contains error status
  struct blps_enable_rsp *cmp_evt =
      KE_MSG_ALLOC(BLPS_ENABLE_RSP, src_id, dest_id, blps_enable_rsp);
  cmp_evt->status = status;
  cmp_evt->conidx = param->conidx;
  ke_msg_send(cmp_evt);

  return (KE_MSG_CONSUMED);
}

/**
 ****************************************************************************************
 * @brief Handles reception of the read request from peer device
 *
 * @param[in] msgid Id of the message received (probably unused).
 * @param[in] param Pointer to the parameters of the message.
 * @param[in] dest_id ID of the receiving task instance (probably unused).
 * @param[in] src_id ID of the sending task instance.
 * @return If the message was consumed or not.
 ****************************************************************************************
 */
__STATIC int gattc_read_req_ind_handler(ke_msg_id_t const msgid,
                                        struct gattc_read_req_ind const *param,
                                        ke_task_id_t const dest_id,
                                        ke_task_id_t const src_id) {
  if (ke_state_get(dest_id) == BLPS_IDLE) {
    // Get the address of the environment
    struct blps_env_tag *blps_env = PRF_ENV_GET(BLPS, blps);
    uint8_t conidx = KE_IDX_GET(src_id);
    uint8_t att_idx = param->handle - blps_env->shdl;

    uint16_t value = 0;
    uint8_t status = ATT_ERR_NO_ERROR;

    switch (att_idx) {
    case BPS_IDX_BP_FEATURE_VAL: {
      value = blps_env->features;
    } break;

    case BPS_IDX_BP_MEAS_IND_CFG: {
      value = (blps_env->prfl_ntf_ind_cfg[conidx] & BLPS_BP_MEAS_IND_CFG)
                  ? PRF_CLI_START_IND
                  : PRF_CLI_STOP_NTFIND;
    } break;
    case BPS_IDX_INTM_CUFF_PRESS_NTF_CFG: {
      // Characteristic is profile specific
      if (BLPS_IS_SUPPORTED(BLPS_INTM_CUFF_PRESS_SUP)) {
        // Fill data
        value =
            (blps_env->prfl_ntf_ind_cfg[conidx] & BLPS_INTM_CUFF_PRESS_NTF_CFG)
                ? PRF_CLI_START_NTF
                : PRF_CLI_STOP_NTFIND;
      } else {
        status = ATT_ERR_ATTRIBUTE_NOT_FOUND;
      }
    } break;

    default: {
      status = ATT_ERR_REQUEST_NOT_SUPPORTED;
    } break;
    }

    // Send data to peer device
    struct gattc_read_cfm *cfm = KE_MSG_ALLOC_DYN(
        GATTC_READ_CFM, src_id, dest_id, gattc_read_cfm, sizeof(uint16_t));
    cfm->length = sizeof(uint16_t);
    memcpy(cfm->value, &value, sizeof(uint16_t));
    cfm->handle = param->handle;
    cfm->status = status;

    // Send value to peer device.
    ke_msg_send(cfm);
  }

  return (KE_MSG_CONSUMED);
}

/**
 ****************************************************************************************
 * @brief Handles reception of the @ref BLPS_MEAS_SEND_REQ message.
 * @param[in] msgid Id of the message received (probably unused).
 * @param[in] param Pointer to the parameters of the message.
 * @param[in] dest_id ID of the receiving task instance (probably unused).
 * @param[in] src_id ID of the sending task instance.
 * @return If the message was consumed or not.
 ****************************************************************************************
 */
__STATIC int blps_meas_send_req_handler(ke_msg_id_t const msgid,
                                        struct blps_meas_send_req const *param,
                                        ke_task_id_t const dest_id,
                                        ke_task_id_t const src_id) {
  // Message status
  uint8_t msg_status = KE_MSG_CONSUMED;
  // Status
  uint8_t status = GAP_ERR_NO_ERROR;

  if (gapc_get_conhdl(param->conidx) == GAP_INVALID_CONHDL) {
    status = PRF_ERR_DISCONNECTED;
  } else if (ke_state_get(dest_id) == BLPS_IDLE) {
    // Get the address of the environment
    struct blps_env_tag *blps_env = PRF_ENV_GET(BLPS, blps);

    // Intermediary blood pressure, must be notified if enabled
    if (param->flag_interm_cp) {
      // Check if supported
      if (BLPS_IS_SUPPORTED(BLPS_INTM_CUFF_PRESS_SUP)) {
        if (!BLPS_IS_ENABLED(BLPS_INTM_CUFF_PRESS_NTF_CFG, param->conidx)) {
          status = PRF_ERR_NTF_DISABLED;
        }
      } else {
        status = PRF_ERR_FEATURE_NOT_SUPPORTED;
      }
    }

    // Stable Blood Pressure Measurement, must be indicated if enabled
    else if (!BLPS_IS_ENABLED(BLPS_BP_MEAS_IND_CFG, param->conidx)) {
      status = PRF_ERR_IND_DISABLED;
    }

    // Check if message can be sent
    if (status == GAP_ERR_NO_ERROR) {
      // Allocate the GATT notification message
      struct gattc_send_evt_cmd *meas_val = KE_MSG_ALLOC_DYN(
          GATTC_SEND_EVT_CMD, KE_BUILD_ID(TASK_GATTC, param->conidx), dest_id,
          gattc_send_evt_cmd, BLPS_BP_MEAS_MAX_LEN);

      // Fill event type and handle which trigger event
      if (param->flag_interm_cp) {
        meas_val->operation = GATTC_NOTIFY;
        meas_val->handle = blps_env->shdl + BPS_IDX_INTM_CUFF_PRESS_VAL;
      } else {
        // Fill in the parameter structure
        meas_val->operation = GATTC_INDICATE;
        meas_val->handle = blps_env->shdl + BPS_IDX_BP_MEAS_VAL;
      }

      // Pack the BP Measurement value
      meas_val->length =
          blps_pack_meas_value(meas_val->value, &param->meas_val);

      // Send the event
      ke_msg_send(meas_val);
      // Go to busy state
      ke_state_set(dest_id, BLPS_BUSY);
    }
  } else {
    // Save it for later
    msg_status = KE_MSG_SAVED;
  }

  if (status != GAP_ERR_NO_ERROR) {
    // Send error message to application
    blps_meas_send_rsp_send(param->conidx, status);
  }

  return (msg_status);
}

/**
 ****************************************************************************************
 * @brief Handles reception of the @ref GL2C_CODE_ATT_WR_CMD_IND message.
 * The handler compares the new values with current ones and notifies them if
 *they changed.
 * @param[in] msgid Id of the message received (probably unused).
 * @param[in] param Pointer to the parameters of the message.
 * @param[in] dest_id ID of the receiving task instance (probably unused).
 * @param[in] src_id ID of the sending task instance.
 * @return If the message was consumed or not.
 ****************************************************************************************
 */
__STATIC int gattc_write_req_ind_handler(
    ke_msg_id_t const msgid, struct gattc_write_req_ind const *param,
    ke_task_id_t const dest_id, ke_task_id_t const src_id) {
  // Get the address of the environment
  struct blps_env_tag *blps_env = PRF_ENV_GET(BLPS, blps);
  uint8_t conidx = KE_IDX_GET(src_id);

  uint16_t value = 0x0000;
  uint8_t status = GAP_ERR_NO_ERROR;
  uint8_t char_code = 0;

  // Extract value before check
  memcpy(&value, &(param->value), sizeof(uint16_t));

  // BP Measurement Char. - Client Char. Configuration
  if (param->handle == (blps_env->shdl + BPS_IDX_BP_MEAS_IND_CFG)) {
    if ((value == PRF_CLI_STOP_NTFIND) || (value == PRF_CLI_START_IND)) {
      char_code = BPS_BP_MEAS_CHAR;

      if (value == PRF_CLI_STOP_NTFIND) {
        blps_env->prfl_ntf_ind_cfg[conidx] &= ~BLPS_BP_MEAS_IND_CFG;
      } else // PRF_CLI_START_IND
      {
        blps_env->prfl_ntf_ind_cfg[conidx] |= BLPS_BP_MEAS_IND_CFG;
      }
    } else {
      status = PRF_APP_ERROR;
    }
  } else if (param->handle ==
             (blps_env->shdl + BPS_IDX_INTM_CUFF_PRESS_NTF_CFG)) {
    if ((value == PRF_CLI_STOP_NTFIND) || (value == PRF_CLI_START_NTF)) {
      char_code = BPS_INTM_CUFF_MEAS_CHAR;

      if (value == PRF_CLI_STOP_NTFIND) {
        blps_env->prfl_ntf_ind_cfg[conidx] &= ~BLPS_INTM_CUFF_PRESS_NTF_CFG;
      } else // PRF_CLI_START_NTF
      {
        blps_env->prfl_ntf_ind_cfg[conidx] |= BLPS_INTM_CUFF_PRESS_NTF_CFG;
      }
    } else {
      status = PRF_APP_ERROR;
    }
  }

  if (status == GAP_ERR_NO_ERROR) {
    // Inform APP of configuration change
    struct blps_cfg_indntf_ind *ind = KE_MSG_ALLOC(
        BLPS_CFG_INDNTF_IND, prf_dst_task_get(&blps_env->prf_env, conidx),
        prf_src_task_get(&blps_env->prf_env, conidx), blps_cfg_indntf_ind);

    ind->conidx = conidx;
    ind->char_code = char_code;
    memcpy(&ind->cfg_val, &value, sizeof(uint16_t));

    ke_msg_send(ind);
  }

  // Send write response
  struct gattc_write_cfm *cfm =
      KE_MSG_ALLOC(GATTC_WRITE_CFM, src_id, dest_id, gattc_write_cfm);
  cfm->handle = param->handle;
  cfm->status = status;
  ke_msg_send(cfm);

  return (KE_MSG_CONSUMED);
}

/**
 ****************************************************************************************
 * @brief Handles @ref GATTC_CMP_EVT for GATTC_NOTIFY and GATT_INDICATE message
 *meaning that Measurement notification/indication has been correctly sent to
 *peer device
 *
 *
 * @param[in] msgid     Id of the message received.
 * @param[in] param     Pointer to the parameters of the message.
 * @param[in] dest_id   ID of the receiving task instance
 * @param[in] src_id    ID of the sending task instance.
 * @return If the message was consumed or not.
 ****************************************************************************************
 */
__STATIC int gattc_cmp_evt_handler(ke_msg_id_t const msgid,
                                   struct gattc_cmp_evt const *param,
                                   ke_task_id_t const dest_id,
                                   ke_task_id_t const src_id) {
  uint8_t conidx = KE_IDX_GET(src_id);

  switch (param->operation) {
  case GATTC_NOTIFY:
  case GATTC_INDICATE: {
    // Send confirmation
    blps_meas_send_rsp_send(conidx, param->status);
    // Go to idle state
    ke_state_set(dest_id, BLPS_IDLE);
  } break;

  default:
    break;
  }

  return (KE_MSG_CONSUMED);
}

/*
 * GLOBAL VARIABLE DEFINITIONS
 ****************************************************************************************
 */

/// Default State handlers definition
KE_MSG_HANDLER_TAB(blps){
    {BLPS_ENABLE_REQ, (ke_msg_func_t)blps_enable_req_handler},
    {GATTC_READ_REQ_IND, (ke_msg_func_t)gattc_read_req_ind_handler},
    {BLPS_MEAS_SEND_REQ, (ke_msg_func_t)blps_meas_send_req_handler},
    {GATTC_CMP_EVT, (ke_msg_func_t)gattc_cmp_evt_handler},
    {GATTC_WRITE_REQ_IND, (ke_msg_func_t)gattc_write_req_ind_handler},
};

void blps_task_init(struct ke_task_desc *task_desc) {
  // Get the address of the environment
  struct blps_env_tag *blps_env = PRF_ENV_GET(BLPS, blps);

  task_desc->msg_handler_tab = blps_msg_handler_tab;
  task_desc->msg_cnt = ARRAY_LEN(blps_msg_handler_tab);
  task_desc->state = blps_env->state;
  task_desc->idx_max = BLPS_IDX_MAX;
}

#endif /* #if (BLE_BP_SENSOR) */

/// @} BLPSTASK