306 lines
11 KiB
C
306 lines
11 KiB
C
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/**
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****************************************************************************************
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* @addtogroup FINDLTASK
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* @{
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****************************************************************************************
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*/
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/*
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* INCLUDE FILES
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****************************************************************************************
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*/
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#include "rwip_config.h"
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#if (BLE_FINDME_LOCATOR)
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#include "co_utils.h"
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#include "findl_task.h"
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#include "findl.h"
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#include "gattc_task.h"
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#include "prf_utils.h"
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#include "gap.h"
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#include "gapc.h"
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#include "gapc_task.h"
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#include <stdint.h>
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#include "ke_mem.h"
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/// table used to retrieve immediate alert service characteristics information
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const struct prf_char_def findl_ias_char[FINDL_IAS_CHAR_MAX] =
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{
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[FINDL_ALERT_LVL_CHAR] = {ATT_CHAR_ALERT_LEVEL,
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ATT_MANDATORY,
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ATT_CHAR_PROP_WR_NO_RESP},
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};
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/*
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* FUNCTION DEFINITIONS
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****************************************************************************************
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*/
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/**
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****************************************************************************************
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* @brief Handles reception of the @ref FINDL_ENABLE_REQ message.
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* The handler enables the Find Me profile - Locator Role.
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* @param[in] msgid Id of the message received (probably unused).
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* @param[in] param Pointer to the parameters of the message.
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* @param[in] dest_id ID of the receiving task instance (probably unused).
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* @param[in] src_id ID of the sending task instance.
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* @return If the message was consumed or not.
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****************************************************************************************
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*/
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__STATIC int findl_enable_req_handler(ke_msg_id_t const msgid,
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struct findl_enable_req const *param,
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ke_task_id_t const dest_id,
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ke_task_id_t const src_id)
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{
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// Status
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uint8_t status = GAP_ERR_NO_ERROR;
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uint8_t state = ke_state_get(dest_id);
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uint8_t conidx = KE_IDX_GET(dest_id);
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// Find me Locator Role Task Environment
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struct findl_env_tag *findl_env = PRF_ENV_GET(FINDL, findl);
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ASSERT_INFO(findl_env != NULL, dest_id, src_id);
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if((state == FINDL_IDLE) && (findl_env->env[conidx] == NULL))
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{
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// allocate environment variable for task instance
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findl_env->env[conidx] = (struct findl_cnx_env*) ke_malloc(sizeof(struct findl_cnx_env),KE_MEM_ATT_DB);
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memset(findl_env->env[conidx], 0, sizeof(struct findl_cnx_env));
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//Config connection, start discovering
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if(param->con_type == PRF_CON_DISCOVERY)
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{
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//start discovering IAS on peer
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prf_disc_svc_send(&(findl_env->prf_env), conidx, ATT_SVC_IMMEDIATE_ALERT);
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// Go to DISCOVERING state
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ke_state_set(dest_id, FINDL_DISCOVERING);
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}
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//normal connection, get saved att details
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else
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{
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findl_env->env[conidx]->ias = param->ias;
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//send APP confirmation that can start normal connection to TH
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findl_enable_rsp_send(findl_env, conidx, GAP_ERR_NO_ERROR);
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}
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}
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else if(state != FINDL_FREE)
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{
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status = PRF_ERR_REQ_DISALLOWED;
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}
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// send an error if request fails
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if(status != GAP_ERR_NO_ERROR)
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{
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findl_enable_rsp_send(findl_env, conidx, status);
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}
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return (KE_MSG_CONSUMED);
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}
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/**
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****************************************************************************************
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* @brief Handles reception of the @ref GATTC_SDP_SVC_IND_HANDLER message.
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* The handler stores the found service details for service discovery.
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* @param[in] msgid Id of the message received (probably unused).
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* @param[in] param Pointer to the parameters of the message.
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* @param[in] dest_id ID of the receiving task instance (probably unused).
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* @param[in] src_id ID of the sending task instance.
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* @return If the message was consumed or not.
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****************************************************************************************
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*/
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__STATIC int gattc_sdp_svc_ind_handler(ke_msg_id_t const msgid,
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struct gattc_sdp_svc_ind const *ind,
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ke_task_id_t const dest_id,
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ke_task_id_t const src_id)
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{
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uint8_t state = ke_state_get(dest_id);
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if(state == FINDL_DISCOVERING)
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{
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uint8_t conidx = KE_IDX_GET(dest_id);
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// Get the address of the environment
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struct findl_env_tag *findl_env = PRF_ENV_GET(FINDL, findl);
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ASSERT_INFO(findl_env != NULL, dest_id, src_id);
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ASSERT_INFO(findl_env->env[conidx] != NULL, dest_id, src_id);
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if(findl_env->env[conidx]->nb_svc == 0)
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{
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// Retrieve IAS characteristic
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prf_extract_svc_info(ind, FINDL_IAS_CHAR_MAX, &findl_ias_char[0],
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&(findl_env->env[conidx]->ias.alert_lvl_char), 0, NULL, NULL);
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//Even if we get multiple responses we only store 1 range
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findl_env->env[conidx]->ias.svc.shdl = ind->start_hdl;
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findl_env->env[conidx]->ias.svc.ehdl = ind->end_hdl;
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}
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findl_env->env[conidx]->nb_svc++;
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}
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return (KE_MSG_CONSUMED);
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}
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/**
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****************************************************************************************
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* @brief Handles reception of the @ref FINDL_SET_ALERT_REQ message.
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* The handler disables the Find Me profile - Target Role.
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* @param[in] msgid Id of the message received (probably unused).
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* @param[in] param Pointer to the parameters of the message.
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* @param[in] dest_id ID of the receiving task instance (probably unused).
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* @param[in] src_id ID of the sending task instance.
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* @return If the message was consumed or not.
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****************************************************************************************
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*/
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__STATIC int findl_set_alert_req_handler(ke_msg_id_t const msgid,
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struct findl_set_alert_req const *param,
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ke_task_id_t const dest_id,
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ke_task_id_t const src_id)
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{
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// Status
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uint8_t status = GAP_ERR_NO_ERROR;
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// Get the address of the environment
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struct findl_env_tag *findl_env = PRF_ENV_GET(FINDL, findl);
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uint8_t conidx = KE_IDX_GET(dest_id);
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uint8_t state = ke_state_get(dest_id);
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int msg_status = KE_MSG_CONSUMED;
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if(state == FINDL_IDLE)
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{
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// check if discovery performed
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if(findl_env->env[conidx] == NULL)
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{
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status = PRF_ERR_REQ_DISALLOWED;
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}
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//Check we're sending a correct value
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else if ((param->alert_lvl == FINDL_ALERT_NONE) ||
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(param->alert_lvl == FINDL_ALERT_MILD) ||
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(param->alert_lvl == FINDL_ALERT_HIGH))
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{
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if(findl_env->env[conidx]->ias.alert_lvl_char.char_hdl != 0x0000)
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{
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// Send GATT Write Request
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prf_gatt_write(&findl_env->prf_env, conidx,
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findl_env->env[conidx]->ias.alert_lvl_char.val_hdl,
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(uint8_t *)¶m->alert_lvl, sizeof(uint8_t), GATTC_WRITE_NO_RESPONSE);
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// wait for end of write request
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ke_state_set(dest_id, FINDL_BUSY);
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}
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else
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{
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//cannot set alert level because have no char handle for it
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status = PRF_ERR_INEXISTENT_HDL;
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}
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}
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else
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{
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//wrong level - not one of the possible 3
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status = PRF_ERR_INVALID_PARAM;
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}
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struct findl_set_alert_rsp *rsp = KE_MSG_ALLOC(FINDL_SET_ALERT_RSP,
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src_id, dest_id, findl_set_alert_rsp);
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// set error status
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rsp->status = status;
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ke_msg_send(rsp);
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}
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else if(state != FINDL_FREE)
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{
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msg_status = KE_MSG_SAVED;;
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}
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// else nothing to do - ignore message
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return (msg_status);
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}
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/**
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****************************************************************************************
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* @brief Handles reception of the @ref GATTC_CMP_EVT message.
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* This generic event is received for different requests, so need to keep track.
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* @param[in] msgid Id of the message received (probably unused).
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* @param[in] param Pointer to the parameters of the message.
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* @param[in] dest_id ID of the receiving task instance (probably unused).
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* @param[in] src_id ID of the sending task instance.
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* @return If the message was consumed or not.
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****************************************************************************************
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*/
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__STATIC int gattc_cmp_evt_handler(ke_msg_id_t const msgid,
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struct gattc_cmp_evt const *param,
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ke_task_id_t const dest_id,
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ke_task_id_t const src_id)
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{
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uint8_t state = ke_state_get(dest_id);
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// Get the address of the environment
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struct findl_env_tag *findl_env = PRF_ENV_GET(FINDL, findl);
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uint8_t conidx = KE_IDX_GET(dest_id);
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if(state == FINDL_DISCOVERING)
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{
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uint8_t status = param->status;
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if (param->status == ATT_ERR_NO_ERROR)
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{
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if(findl_env->env[conidx]->nb_svc == 1)
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{
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status = prf_check_svc_char_validity(FINDL_IAS_CHAR_MAX,
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&(findl_env->env[conidx]->ias.alert_lvl_char), findl_ias_char);
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}
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// too much services
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else if (findl_env->env[conidx]->nb_svc > 1)
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{
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status = PRF_ERR_MULTIPLE_SVC;
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}
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// no services found
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else
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{
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status = PRF_ERR_INVALID_PARAM;
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}
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}
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findl_enable_rsp_send(findl_env, conidx, status);
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}
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else if (state == FINDL_BUSY)
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{
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ke_state_set(dest_id, FINDL_IDLE);
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}
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return (KE_MSG_CONSUMED);
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}
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/*
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* GLOBAL VARIABLE DEFINITIONS
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****************************************************************************************
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*/
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/// Default State handlers definition
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KE_MSG_HANDLER_TAB(findl)
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{
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{FINDL_ENABLE_REQ, (ke_msg_func_t)findl_enable_req_handler},
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{GATTC_CMP_EVT, (ke_msg_func_t)gattc_cmp_evt_handler},
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{GATTC_SDP_SVC_IND, (ke_msg_func_t)gattc_sdp_svc_ind_handler},
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{FINDL_SET_ALERT_REQ, (ke_msg_func_t)findl_set_alert_req_handler},
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};
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void findl_task_init(struct ke_task_desc *task_desc)
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{
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// Get the address of the environment
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struct findl_env_tag *findl_env = PRF_ENV_GET(FINDL, findl);
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task_desc->msg_handler_tab = findl_msg_handler_tab;
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task_desc->msg_cnt = ARRAY_LEN(findl_msg_handler_tab);
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task_desc->state = findl_env->state;
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task_desc->idx_max = FINDL_IDX_MAX;
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}
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#endif //BLE_FINDME_LOCATOR
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/// @} FINDLTASK
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