pinebuds/services/ble_profiles/anp/anpc/src/anpc_task.c

/**
 ****************************************************************************************
 * @addtogroup ANPCTASK
 * @{
 ****************************************************************************************
 */

/*
 * INCLUDE FILES
 ****************************************************************************************
 */

#include "rwip_config.h"

#if (BLE_AN_CLIENT)
#include "anp_common.h"

#include "anpc.h"
#include "anpc_task.h"
#include "gap.h"
#include "gattm_task.h"

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

/*
 * STRUCTURES
 ****************************************************************************************
 */

/// State machine used to retrieve Alert Notification service characteristics
/// information
const struct prf_char_def anpc_ans_char[ANPC_CHAR_MAX] = {
    /// Supported New Alert Category
    [ANPC_CHAR_SUP_NEW_ALERT_CAT] = {ATT_CHAR_SUP_NEW_ALERT_CAT, ATT_MANDATORY,
                                     ATT_CHAR_PROP_RD},
    /// New Alert
    [ANPC_CHAR_NEW_ALERT] = {ATT_CHAR_NEW_ALERT, ATT_MANDATORY,
                             ATT_CHAR_PROP_NTF},
    /// Supported Unread Alert Category
    [ANPC_CHAR_SUP_UNREAD_ALERT_CAT] = {ATT_CHAR_SUP_UNREAD_ALERT_CAT,
                                        ATT_MANDATORY, ATT_CHAR_PROP_RD},
    /// Unread Alert Status
    [ANPC_CHAR_UNREAD_ALERT_STATUS] = {ATT_CHAR_UNREAD_ALERT_STATUS,
                                       ATT_MANDATORY, ATT_CHAR_PROP_NTF},
    /// Alert Notification Control Point
    [ANPC_CHAR_ALERT_NTF_CTNL_PT] = {ATT_CHAR_ALERT_NTF_CTNL_PT, ATT_MANDATORY,
                                     ATT_CHAR_PROP_WR},
};

/// State machine used to retrieve Phone Alert Status service characteristic
/// descriptor information
const struct prf_char_desc_def anpc_ans_char_desc[ANPC_DESC_MAX] = {
    /// New Alert Char. - Client Characteristic Configuration
    [ANPC_DESC_NEW_ALERT_CL_CFG] = {ATT_DESC_CLIENT_CHAR_CFG, ATT_MANDATORY,
                                    ANPC_CHAR_NEW_ALERT},
    /// Unread Alert Status Char. - Client Characteristic Configuration
    [ANPC_DESC_UNREAD_ALERT_STATUS_CL_CFG] = {ATT_DESC_CLIENT_CHAR_CFG,
                                              ATT_MANDATORY,
                                              ANPC_CHAR_UNREAD_ALERT_STATUS},
};

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

/**
 ****************************************************************************************
 * @brief Handles reception of the @ref ANPC_ENABLE_REQ message.
 * @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 anpc_enable_req_handler(ke_msg_id_t const msgid,
                                     struct anpc_enable_req *param,
                                     ke_task_id_t const dest_id,
                                     ke_task_id_t const src_id) {
  // Status
  uint8_t status = GAP_ERR_NO_ERROR;
  // Phone Alert Status Profile Client Role Task Environment
  struct anpc_env_tag *anpc_env = PRF_ENV_GET(ANPC, anpc);
  // Get connection index
  uint8_t conidx = KE_IDX_GET(dest_id);
  uint8_t state = ke_state_get(dest_id);

  if ((state == ANPC_IDLE) && (anpc_env->env[conidx] == NULL)) {
    // allocate environment variable for task instance
    anpc_env->env[conidx] = (struct anpc_cnx_env *)ke_malloc(
        sizeof(struct anpc_cnx_env), KE_MEM_ATT_DB);
    memset(anpc_env->env[conidx], 0, sizeof(struct anpc_cnx_env));

    anpc_env->env[conidx]->last_char_code = ANPC_ENABLE_OP_CODE;

    // Start discovering
    if (param->con_type == PRF_CON_DISCOVERY) {
      prf_disc_svc_send(&(anpc_env->prf_env), conidx, ATT_SVC_ALERT_NTF);

      // Go to DISCOVERING state
      ke_state_set(dest_id, ANPC_DISCOVERING);

      // Configure the environment for a discovery procedure
      anpc_env->env[conidx]->last_uuid_req = ATT_SVC_ALERT_NTF;
    }
    // Bond information is provided
    else {
      // Keep the provided database content
      memcpy(&anpc_env->env[conidx]->ans, &param->ans,
             sizeof(struct anpc_ans_content));

      // send APP confirmation that can start normal connection to TH
      anpc_enable_rsp_send(anpc_env, conidx, GAP_ERR_NO_ERROR);
    }
  }

  else if (state != ANPC_FREE) {
    status = PRF_ERR_REQ_DISALLOWED;
  }

  // send an error if request fails
  if (status != GAP_ERR_NO_ERROR) {
    anpc_enable_rsp_send(anpc_env, conidx, status);
  }

  return (KE_MSG_CONSUMED);
}

/**
 ****************************************************************************************
 * @brief Handles reception of the @ref ANPC_READ_CMD message.
 * @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 anpc_read_cmd_handler(ke_msg_id_t const msgid,
                                   struct anpc_read_cmd *param,
                                   ke_task_id_t const dest_id,
                                   ke_task_id_t const src_id) {
  // Message status
  uint8_t msg_status = KE_MSG_CONSUMED;
  // Get connection index
  uint8_t conidx = KE_IDX_GET(dest_id);
  // Get the address of the environment
  struct anpc_env_tag *anpc_env = PRF_ENV_GET(ANPC, anpc);

  if (anpc_env->env[conidx] != NULL) {
    // Attribute Handle
    uint16_t handle = ATT_INVALID_SEARCH_HANDLE;
    // Status
    uint8_t status = GAP_ERR_NO_ERROR;

    // Check the provided connection handle
    do {
      // Check the current state
      if (ke_state_get(dest_id) == ANPC_BUSY) {
        // Keep the request for later, status is GAP_ERR_NO_ERROR
        msg_status = KE_MSG_SAVED;
        break;
      }

      switch (param->read_code) {
      // Read Supported New Alert
      case (ANPC_RD_SUP_NEW_ALERT_CAT): {
        handle = anpc_env->env[conidx]
                     ->ans.chars[ANPC_CHAR_SUP_NEW_ALERT_CAT]
                     .val_hdl;
      } break;

      // Read Supported Unread Alert
      case (ANPC_RD_SUP_UNREAD_ALERT_CAT): {
        handle = anpc_env->env[conidx]
                     ->ans.chars[ANPC_CHAR_SUP_UNREAD_ALERT_CAT]
                     .val_hdl;
      } break;

      // Read New Alert Characteristic Client Char. Cfg. Descriptor Value
      case (ANPC_RD_WR_NEW_ALERT_CFG): {
        handle = anpc_env->env[conidx]
                     ->ans.descs[ANPC_DESC_NEW_ALERT_CL_CFG]
                     .desc_hdl;
      } break;

      // Read Unread Alert Characteristic Client Char. Cfg. Descriptor Value
      case (ANPC_RD_WR_UNREAD_ALERT_STATUS_CFG): {
        handle = anpc_env->env[conidx]
                     ->ans.descs[ANPC_DESC_UNREAD_ALERT_STATUS_CL_CFG]
                     .desc_hdl;
      } break;

      default: {
        status = PRF_ERR_INVALID_PARAM;
      } break;
      }

      // Check if handle is viable
      if ((handle != ATT_INVALID_SEARCH_HANDLE) &&
          (status == GAP_ERR_NO_ERROR)) {
        // Force the operation value
        param->operation = ANPC_READ_OP_CODE;

        // Store the command structure
        anpc_env->env[conidx]->operation = param;
        msg_status = KE_MSG_NO_FREE;

        // Send the read request
        prf_read_char_send(&(anpc_env->prf_env), conidx,
                           anpc_env->env[conidx]->ans.svc.shdl,
                           anpc_env->env[conidx]->ans.svc.ehdl, handle);

        // Go to the Busy state
        ke_state_set(dest_id, ANPC_BUSY);
      } else {
        status = PRF_ERR_INEXISTENT_HDL;
      }
    } while (0);

    if (status != GAP_ERR_NO_ERROR) {
      anpc_send_cmp_evt(anpc_env, conidx, ANPC_READ_OP_CODE, status);
    }
  } else {
    // No connection exists
    anpc_send_cmp_evt(anpc_env, conidx, ANPC_READ_OP_CODE,
                      PRF_ERR_REQ_DISALLOWED);
  }

  return (int)msg_status;
}

/**
 ****************************************************************************************
 * @brief Handles reception of the @ref ANPC_WRITE_CMD message.
 * @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 anpc_write_cmd_handler(ke_msg_id_t const msgid,
                                    struct anpc_write_cmd *param,
                                    ke_task_id_t const dest_id,
                                    ke_task_id_t const src_id) {
  // Status
  uint8_t status = GAP_ERR_NO_ERROR;
  // Message status
  uint8_t msg_status = KE_MSG_CONSUMED;

  // Get the address of the environment
  struct anpc_env_tag *anpc_env = PRF_ENV_GET(ANPC, anpc);
  // Get connection index
  uint8_t conidx = KE_IDX_GET(dest_id);

  if (anpc_env->env[conidx] != NULL) {
    do {
      // Check the current state
      if (ke_state_get(dest_id) != ANPC_IDLE) {
        msg_status = KE_MSG_SAVED;
        break;
      }
      // Attribute handle
      uint16_t handle = ATT_INVALID_SEARCH_HANDLE;
      // Length
      uint8_t length;

      switch (param->write_code) {
      // Write Alert Notification Control Point Characteristic Value
      case (ANPC_WR_ALERT_NTF_CTNL_PT): {
        // Check the Category ID and the Command ID
        if ((param->value.ctnl_pt.cmd_id < CMD_ID_NB) &&
            ((param->value.ctnl_pt.cat_id < CAT_ID_NB) ||
             (param->value.ctnl_pt.cat_id == CAT_ID_ALL_SUPPORTED_CAT))) {
          handle = anpc_env->env[conidx]
                       ->ans.chars[ANPC_CHAR_ALERT_NTF_CTNL_PT]
                       .val_hdl;
          length = sizeof(struct anp_ctnl_pt);
        } else {
          status = PRF_ERR_INVALID_PARAM;
        }
      } break;

      // Write New Alert Characteristic Client Char. Cfg. Descriptor Value
      case (ANPC_RD_WR_NEW_ALERT_CFG): {
        if (param->value.new_alert_ntf_cfg <= PRF_CLI_START_NTF) {
          handle = anpc_env->env[conidx]
                       ->ans.descs[ANPC_DESC_NEW_ALERT_CL_CFG]
                       .desc_hdl;
          length = sizeof(uint16_t);
        } else {
          status = PRF_ERR_INVALID_PARAM;
        }
      } break;

      // Write Unread Alert Status Characteristic Client Char. Cfg. Descriptor
      // Value
      case (ANPC_RD_WR_UNREAD_ALERT_STATUS_CFG): {
        if (param->value.unread_alert_status_ntf_cfg <= PRF_CLI_START_NTF) {
          handle = anpc_env->env[conidx]
                       ->ans.descs[ANPC_DESC_UNREAD_ALERT_STATUS_CL_CFG]
                       .desc_hdl;
          length = sizeof(uint16_t);
        } else {
          status = PRF_ERR_INVALID_PARAM;
        }
      } break;

      default: {
        status = PRF_ERR_INVALID_PARAM;
      } break;
      }

      if (status == GAP_ERR_NO_ERROR) {
        // Check if handle is viable
        if (handle != ATT_INVALID_SEARCH_HANDLE) {
          // Send the write request
          prf_gatt_write(&(anpc_env->prf_env), conidx, handle,
                         (uint8_t *)&param->value, length, GATTC_WRITE);

          // Force the operation value
          param->operation = ANPC_WRITE_OP_CODE;
          // Store the command structure
          anpc_env->env[conidx]->operation = param;

          msg_status = KE_MSG_NO_FREE;

          // Go to the Busy state
          ke_state_set(dest_id, ANPC_BUSY);
        } else {
          status = PRF_ERR_INEXISTENT_HDL;
        }
      }
    } while (0);
  } else {
    status = PRF_ERR_REQ_DISALLOWED;
  }

  if (status != GAP_ERR_NO_ERROR) {
    anpc_send_cmp_evt(anpc_env, conidx, ANPC_WRITE_OP_CODE, status);
  }

  return (int)msg_status;
}

/**
 ****************************************************************************************
 * @brief Handles reception of the @ref GATTC_CMP_EVT message.
 * @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) {
  // Get the address of the environment
  struct anpc_env_tag *anpc_env = PRF_ENV_GET(ANPC, anpc);
  uint8_t conidx = KE_IDX_GET(dest_id);
  // Status
  uint8_t status;

  if (anpc_env->env[conidx] != NULL) {
    uint8_t state = ke_state_get(dest_id);

    if (state == ANPC_DISCOVERING) {
      status = param->status;

      if ((status == ATT_ERR_ATTRIBUTE_NOT_FOUND) ||
          (status == ATT_ERR_NO_ERROR)) {
        // Discovery
        // check characteristic validity
        if (anpc_env->env[conidx]->nb_svc == 1) {
          status = prf_check_svc_char_validity(
              ANPC_CHAR_MAX, anpc_env->env[conidx]->ans.chars, anpc_ans_char);
        }
        // too much services
        else if (anpc_env->env[conidx]->nb_svc > 1) {
          status = PRF_ERR_MULTIPLE_SVC;
        }
        // no services found
        else {
          status = PRF_ERR_STOP_DISC_CHAR_MISSING;
        }

        // check descriptor validity
        if (status == GAP_ERR_NO_ERROR) {
          status = prf_check_svc_char_desc_validity(
              ANPC_DESC_MAX, anpc_env->env[conidx]->ans.descs,
              anpc_ans_char_desc, anpc_env->env[conidx]->ans.chars);
        }
      }

      anpc_enable_rsp_send(anpc_env, conidx, status);
    }

    else if (state == ANPC_BUSY) {
      switch (param->operation) {
      case GATTC_READ: {
        switch (
            ((struct anpc_cmd *)anpc_env->env[conidx]->operation)->operation) {
        // Read Supported New Alert Category Characteristic value
        case (ANPC_ENABLE_RD_NEW_ALERT_OP_CODE): {
          if (param->status == GAP_ERR_NO_ERROR) {
            // Force the operation value
            ((struct anpc_cmd *)anpc_env->env[conidx]->operation)->operation =
                ANPC_ENABLE_RD_UNREAD_ALERT_OP_CODE;
            // Check Supported Unread Alert Category
            prf_read_char_send(&(anpc_env->prf_env), conidx,
                               anpc_env->env[conidx]->ans.svc.shdl,
                               anpc_env->env[conidx]->ans.svc.ehdl,
                               anpc_env->env[conidx]
                                   ->ans.chars[ANPC_CHAR_SUP_UNREAD_ALERT_CAT]
                                   .val_hdl);
          } else {
            anpc_send_cmp_evt(anpc_env, conidx, ANPC_ENABLE_OP_CODE,
                              param->status);
          }
        } break;

        case (ANPC_ENABLE_RD_UNREAD_ALERT_OP_CODE): {
          if (param->status == GAP_ERR_NO_ERROR) {
            // If peer device was unknown, stop the procedure
            if (((struct anpc_enable_req *)anpc_env->env[conidx]->operation)
                    ->con_type == PRF_CON_DISCOVERY) {
              anpc_send_cmp_evt(anpc_env, conidx, ANPC_ENABLE_OP_CODE,
                                GAP_ERR_NO_ERROR);
            }
            // If peer device was already known (bonded), start Recovery from
            // Connection Loss procedure
            else {
              // Reset the environment
              anpc_env->env[conidx]->last_uuid_req = CAT_ID_SPL_ALERT;

              if (anpc_found_next_alert_cat(
                      anpc_env, conidx,
                      ((struct anpc_enable_req *)anpc_env->env[conidx]
                           ->operation)
                          ->new_alert_enable)) {
                // Force the operation value
                ((struct anpc_cmd *)anpc_env->env[conidx]->operation)
                    ->operation = ANPC_ENABLE_WR_NEW_ALERT_OP_CODE;
                // Enable sending of notifications for the found category ID
                anpc_write_alert_ntf_ctnl_pt(
                    anpc_env, conidx, CMD_ID_EN_NEW_IN_ALERT_NTF,
                    anpc_env->env[conidx]->last_uuid_req - 1);
              } else {
                // Reset the environment
                anpc_env->env[conidx]->last_uuid_req = CAT_ID_SPL_ALERT;

                if (anpc_found_next_alert_cat(
                        anpc_env, conidx,
                        ((struct anpc_enable_req *)anpc_env->env[conidx]
                             ->operation)
                            ->unread_alert_enable)) {
                  // Force the operation value
                  ((struct anpc_cmd *)anpc_env->env[conidx]->operation)
                      ->operation = ANPC_ENABLE_WR_UNREAD_ALERT_OP_CODE;
                  // Enable sending of notifications for the found category ID
                  anpc_write_alert_ntf_ctnl_pt(
                      anpc_env, conidx, CMD_ID_EN_UNREAD_CAT_STATUS_NTF,
                      anpc_env->env[conidx]->last_uuid_req - 1);
                } else {
                  anpc_send_cmp_evt(anpc_env, conidx, ANPC_ENABLE_OP_CODE,
                                    GAP_ERR_NO_ERROR);
                }
              }
            }
          } else {
            anpc_send_cmp_evt(anpc_env, conidx, ANPC_ENABLE_OP_CODE,
                              param->status);
          }
        } break;

        case (ANPC_READ_OP_CODE): {
          // Inform the requester that the read procedure is over
          anpc_send_cmp_evt(anpc_env, conidx, ANPC_READ_OP_CODE, param->status);
        } break;

        default: {
          ASSERT_ERR(0);
        }
        }
      } break;

      case GATTC_WRITE:
      case GATTC_WRITE_NO_RESPONSE: {
        // Retrieve the operation currently performed
        uint8_t operation =
            ((struct anpc_cmd *)anpc_env->env[conidx]->operation)->operation;

        switch (operation) {
        case (ANPC_WRITE_OP_CODE): {
          uint8_t wr_code =
              ((struct anpc_write_cmd *)anpc_env->env[conidx]->operation)
                  ->write_code;

          if ((wr_code == ANPC_RD_WR_NEW_ALERT_CFG) ||
              (wr_code == ANPC_RD_WR_UNREAD_ALERT_STATUS_CFG) ||
              (wr_code == ANPC_WR_ALERT_NTF_CTNL_PT)) {
            anpc_send_cmp_evt(anpc_env, conidx, ANPC_WRITE_OP_CODE,
                              param->status);
          } else {
            ASSERT_ERR(0);
          }
        } break;

        case (ANPC_ENABLE_WR_NEW_ALERT_OP_CODE): {
          // Look for the next category to enable
          if (anpc_found_next_alert_cat(
                  anpc_env, conidx,
                  ((struct anpc_enable_req *)anpc_env->env[conidx]->operation)
                      ->new_alert_enable)) {
            // Enable sending of notifications for the found category ID
            anpc_write_alert_ntf_ctnl_pt(
                anpc_env, conidx, CMD_ID_EN_NEW_IN_ALERT_NTF,
                anpc_env->env[conidx]->last_uuid_req - 1);
          } else {
            // Force the operation value
            ((struct anpc_cmd *)anpc_env->env[conidx]->operation)->operation =
                ANPC_ENABLE_WR_NTF_NEW_ALERT_OP_CODE;
            // Send a "Notify New Alert Immediately" command with the Category
            // ID field set to 0xFF
            anpc_write_alert_ntf_ctnl_pt(anpc_env, conidx,
                                         CMD_ID_NTF_NEW_IN_ALERT_IMM,
                                         CAT_ID_ALL_SUPPORTED_CAT);
          }
        } break;

        case (ANPC_ENABLE_WR_NTF_NEW_ALERT_OP_CODE): {
          // Reset the environment
          anpc_env->env[conidx]->last_uuid_req = CAT_ID_SPL_ALERT;

          if (anpc_found_next_alert_cat(
                  anpc_env, conidx,
                  ((struct anpc_enable_req *)anpc_env->env[conidx]->operation)
                      ->unread_alert_enable)) {
            // Force the operation value
            ((struct anpc_cmd *)anpc_env->env[conidx]->operation)->operation =
                ANPC_ENABLE_WR_UNREAD_ALERT_OP_CODE;
            // Enable sending of notifications for the found category ID
            anpc_write_alert_ntf_ctnl_pt(
                anpc_env, conidx, CMD_ID_EN_UNREAD_CAT_STATUS_NTF,
                anpc_env->env[conidx]->last_uuid_req - 1);
          } else {
            anpc_send_cmp_evt(anpc_env, conidx, ANPC_ENABLE_OP_CODE,
                              GAP_ERR_NO_ERROR);
          }
        } break;

        case (ANPC_ENABLE_WR_UNREAD_ALERT_OP_CODE): {
          // Look for the next category to enable
          if (anpc_found_next_alert_cat(
                  anpc_env, conidx,
                  ((struct anpc_enable_req *)anpc_env->env[conidx]->operation)
                      ->unread_alert_enable)) {
            // Enable sending of notifications for the found category ID
            anpc_write_alert_ntf_ctnl_pt(
                anpc_env, conidx, CMD_ID_EN_UNREAD_CAT_STATUS_NTF,
                anpc_env->env[conidx]->last_uuid_req - 1);
          } else {
            // Force the operation value
            ((struct anpc_cmd *)anpc_env->env[conidx]->operation)->operation =
                ANPC_ENABLE_WR_NTF_UNREAD_ALERT_OP_CODE;
            // Send a "Notify New Alert Immediately" command with the Category
            // ID field set to 0xFF
            anpc_write_alert_ntf_ctnl_pt(anpc_env, conidx,
                                         CMD_ID_NTF_UNREAD_CAT_STATUS_IMM,
                                         CAT_ID_ALL_SUPPORTED_CAT);
          }
        } break;

        case (ANPC_ENABLE_WR_NTF_UNREAD_ALERT_OP_CODE): {
          // The discovery procedure is over
          anpc_send_cmp_evt(anpc_env, conidx, ANPC_ENABLE_OP_CODE,
                            param->status);
        } break;

        default: {
          ASSERT_ERR(0);
        } break;
        }
      } break;

      case GATTC_REGISTER:
      case GATTC_UNREGISTER: {
        // Do nothing
      } break;

      default: {
        ASSERT_ERR(0);
      } break;
      }
    }
  }
  // else ignore the message
  return (KE_MSG_CONSUMED);
}

/**
 ****************************************************************************************
 * @brief Handles reception of the @ref GATTC_SDP_SVC_IND_HANDLER message.
 * The handler stores the found service details for service discovery.
 * @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_sdp_svc_ind_handler(ke_msg_id_t const msgid,
                                       struct gattc_sdp_svc_ind const *ind,
                                       ke_task_id_t const dest_id,
                                       ke_task_id_t const src_id) {
  uint8_t state = ke_state_get(dest_id);

  if (state == ANPC_DISCOVERING) {
    uint8_t conidx = KE_IDX_GET(dest_id);

    struct anpc_env_tag *anpc_env = PRF_ENV_GET(ANPC, anpc);

    ASSERT_INFO(anpc_env != NULL, dest_id, src_id);
    ASSERT_INFO(anpc_env->env[conidx] != NULL, dest_id, src_id);

    if (anpc_env->env[conidx]->nb_svc == 0) {
      // Retrieve ANS characteristics and descriptors
      prf_extract_svc_info(ind, ANPC_CHAR_MAX, &anpc_ans_char[0],
                           &anpc_env->env[conidx]->ans.chars[0], ANPC_DESC_MAX,
                           &anpc_ans_char_desc[0],
                           &anpc_env->env[conidx]->ans.descs[0]);

      // Even if we get multiple responses we only store 1 range
      anpc_env->env[conidx]->ans.svc.shdl = ind->start_hdl;
      anpc_env->env[conidx]->ans.svc.ehdl = ind->end_hdl;
    }

    anpc_env->env[conidx]->nb_svc++;
  }

  return (KE_MSG_CONSUMED);
}

/**
 ****************************************************************************************
 * @brief Handles reception of the @ref GATTC_READ_IND message.
 * Generic event received after every simple read command sent to peer server.
 * @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_ind_handler(ke_msg_id_t const msgid,
                                    struct gattc_read_ind const *param,
                                    ke_task_id_t const dest_id,
                                    ke_task_id_t const src_id) {
  // Get the address of the environment
  struct anpc_env_tag *anpc_env = PRF_ENV_GET(ANPC, anpc);
  uint8_t conidx = KE_IDX_GET(dest_id);

  if (anpc_env->env[conidx] != NULL) {
    ASSERT_ERR(ke_state_get(dest_id) == ANPC_BUSY);

    // Prepare the indication to send to the application
    struct anpc_value_ind *ind = KE_MSG_ALLOC(
        ANPC_VALUE_IND, prf_dst_task_get(&(anpc_env->prf_env), conidx), dest_id,
        anpc_value_ind);

    switch (((struct anpc_cmd *)anpc_env->env[conidx]->operation)->operation) {
    // Read Supported New Alert Category Characteristic value
    case (ANPC_ENABLE_RD_NEW_ALERT_OP_CODE): {
      ind->att_code = ANPC_RD_SUP_NEW_ALERT_CAT;
      ind->value.supp_cat.cat_id_mask_0 = param->value[0];
      // If cat_id_mask_1 not present, shall be considered as 0
      ind->value.supp_cat.cat_id_mask_1 =
          (param->length > 1) ? param->value[1] : 0x00;
    } break;

    case (ANPC_ENABLE_RD_UNREAD_ALERT_OP_CODE): {
      ind->att_code = ANPC_RD_SUP_UNREAD_ALERT_CAT;
      ind->value.supp_cat.cat_id_mask_0 = param->value[0];
      // If cat_id_mask_1 not present, shall be considered as 0
      ind->value.supp_cat.cat_id_mask_1 =
          (param->length > 1) ? param->value[1] : 0;
    } break;

    case (ANPC_READ_OP_CODE): {
      ind->att_code =
          ((struct anpc_read_cmd *)anpc_env->env[conidx]->operation)->read_code;
      ind->value.ntf_cfg = co_read16(&param->value[0]);
    } break;

    default: {
      ASSERT_ERR(0);
    } break;
    }

    // Send the indication
    ke_msg_send(ind);
  }
  // else ignore the message

  return (KE_MSG_CONSUMED);
}

/**
 ****************************************************************************************
 * @brief Handles reception of the @ref GATTC_EVENT_IND 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 gattc_event_ind_handler(ke_msg_id_t const msgid,
                                     struct gattc_event_ind const *param,
                                     ke_task_id_t const dest_id,
                                     ke_task_id_t const src_id) {
  // Get the address of the environment
  struct anpc_env_tag *anpc_env = PRF_ENV_GET(ANPC, anpc);
  uint8_t conidx = KE_IDX_GET(dest_id);

  if (anpc_env->env[conidx] != NULL) {
    // Check the category ID
    if (param->value[0] < CAT_ID_NB) {
      // New Alert Characteristic Value
      if (param->handle ==
          anpc_env->env[conidx]->ans.chars[ANPC_CHAR_NEW_ALERT].val_hdl) {
        // Text String information Length
        uint8_t length = param->length - 2;

        if (length > ANS_NEW_ALERT_STRING_INFO_MAX_LEN) {
          length = ANS_NEW_ALERT_STRING_INFO_MAX_LEN;
        }

        // Send an indication to the application
        struct anpc_value_ind *new_alert_ind = KE_MSG_ALLOC_DYN(
            ANPC_VALUE_IND, prf_dst_task_get(&anpc_env->prf_env, conidx),
            prf_src_task_get(&anpc_env->prf_env, conidx), anpc_value_ind,
            length);

        new_alert_ind->att_code = ANPC_NTF_NEW_ALERT;

        // Fulfill the characteristic value
        new_alert_ind->value.new_alert.cat_id = param->value[0];
        new_alert_ind->value.new_alert.nb_new_alert = param->value[1];
        new_alert_ind->value.new_alert.info_str_len = length;
        memcpy(&new_alert_ind->value.new_alert.str_info[0], &param->value[2],
               length);

        // Send the message
        ke_msg_send(new_alert_ind);
      }
      // Unread Alert Status Characteristic Value
      else if (param->handle == anpc_env->env[conidx]
                                    ->ans.chars[ANPC_CHAR_UNREAD_ALERT_STATUS]
                                    .val_hdl) {
        // Send an indication to the application
        struct anpc_value_ind *unrd_alert_ind = KE_MSG_ALLOC(
            ANPC_VALUE_IND, prf_dst_task_get(&anpc_env->prf_env, conidx),
            prf_src_task_get(&anpc_env->prf_env, conidx), anpc_value_ind);

        unrd_alert_ind->att_code = ANPC_NTF_UNREAD_ALERT;

        // Fulfill the characteristic value
        unrd_alert_ind->value.unread_alert.cat_id = param->value[0];
        unrd_alert_ind->value.unread_alert.nb_unread_alert = param->value[1];

        // Send the message
        ke_msg_send(unrd_alert_ind);
      } else {
        ASSERT_ERR(0);
      }
    }
    // else ignore the message
  }
  // else ignore the message

  return (KE_MSG_CONSUMED);
}

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

/// Specifies the default message handlers
KE_MSG_HANDLER_TAB(anpc){
    {ANPC_ENABLE_REQ, (ke_msg_func_t)anpc_enable_req_handler},
    {ANPC_READ_CMD, (ke_msg_func_t)anpc_read_cmd_handler},
    {ANPC_WRITE_CMD, (ke_msg_func_t)anpc_write_cmd_handler},

    {GATTC_SDP_SVC_IND, (ke_msg_func_t)gattc_sdp_svc_ind_handler},

    {GATTC_READ_IND, (ke_msg_func_t)gattc_read_ind_handler},
    {GATTC_EVENT_IND, (ke_msg_func_t)gattc_event_ind_handler},
    {GATTC_CMP_EVT, (ke_msg_func_t)gattc_cmp_evt_handler},
};

void anpc_task_init(struct ke_task_desc *task_desc) {
  // Get the address of the environment
  struct anpc_env_tag *anpc_env = PRF_ENV_GET(ANPC, anpc);

  task_desc->msg_handler_tab = anpc_msg_handler_tab;
  task_desc->msg_cnt = ARRAY_LEN(anpc_msg_handler_tab);
  task_desc->state = anpc_env->state;
  task_desc->idx_max = ANPC_IDX_MAX;
}

#endif //(BLE_AN_CLIENT)

/// @} ANPCTASK