320 lines
12 KiB
C
320 lines
12 KiB
C
/**
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****************************************************************************************
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* @addtogroup DISCTASK
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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_DIS_CLIENT)
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#include "co_utils.h"
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#include "disc.h"
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#include "disc_task.h"
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#include "gap.h"
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#include "gattc_task.h"
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#include "ke_mem.h"
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/// State machine used to retrieve Device Information Service characteristics
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/// information
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const struct prf_char_def disc_dis_char[DISC_CHAR_MAX] = {
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/// Manufacturer Name
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[DISC_MANUFACTURER_NAME_CHAR] = {ATT_CHAR_MANUF_NAME, ATT_OPTIONAL,
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ATT_CHAR_PROP_RD},
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/// Model Number String
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[DISC_MODEL_NB_STR_CHAR] = {ATT_CHAR_MODEL_NB, ATT_OPTIONAL,
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ATT_CHAR_PROP_RD},
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/// Serial Number String
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[DISC_SERIAL_NB_STR_CHAR] = {ATT_CHAR_SERIAL_NB, ATT_OPTIONAL,
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ATT_CHAR_PROP_RD},
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/// Hardware Revision String
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[DISC_HARD_REV_STR_CHAR] = {ATT_CHAR_HW_REV, ATT_OPTIONAL,
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ATT_CHAR_PROP_RD},
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/// Firmware Revision String
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[DISC_FIRM_REV_STR_CHAR] = {ATT_CHAR_FW_REV, ATT_OPTIONAL,
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ATT_CHAR_PROP_RD},
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/// TSoftware Revision String
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[DISC_SW_REV_STR_CHAR] = {ATT_CHAR_SW_REV, ATT_OPTIONAL, ATT_CHAR_PROP_RD},
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/// System ID
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[DISC_SYSTEM_ID_CHAR] = {ATT_CHAR_SYS_ID, ATT_OPTIONAL, ATT_CHAR_PROP_RD},
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/// IEEE
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[DISC_IEEE_CHAR] = {ATT_CHAR_IEEE_CERTIF, ATT_OPTIONAL, ATT_CHAR_PROP_RD},
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/// PnP ID
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[DISC_PNP_ID_CHAR] = {ATT_CHAR_PNP_ID, ATT_OPTIONAL, ATT_CHAR_PROP_RD},
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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 DISC_ENABLE_REQ message.
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* The handler enables the Device Information Service Client 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 disc_enable_req_handler(ke_msg_id_t const msgid,
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struct disc_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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// 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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// Device Information Service Client Role Task Environment
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struct disc_env_tag *disc_env = PRF_ENV_GET(DISC, disc);
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ASSERT_INFO(disc_env != NULL, dest_id, src_id);
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if ((state == DISC_IDLE) && (disc_env->env[conidx] == NULL)) {
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// allocate environment variable for task instance
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disc_env->env[conidx] = (struct disc_cnx_env *)ke_malloc(
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sizeof(struct disc_cnx_env), KE_MEM_ATT_DB);
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memset(disc_env->env[conidx], 0, sizeof(struct disc_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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// start discovering HTS on peer
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prf_disc_svc_send(&(disc_env->prf_env), conidx, ATT_SVC_DEVICE_INFO);
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// Go to DISCOVERING state
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ke_state_set(dest_id, DISC_DISCOVERING);
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}
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// normal connection, get saved att details
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else {
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disc_env->env[conidx]->dis = param->dis;
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// send APP confirmation that can start normal connection to TH
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disc_enable_rsp_send(disc_env, conidx, GAP_ERR_NO_ERROR);
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}
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} else if (state != DISC_FREE) {
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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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disc_enable_rsp_send(disc_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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uint8_t state = ke_state_get(dest_id);
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if (state == DISC_DISCOVERING) {
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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 disc_env_tag *disc_env = PRF_ENV_GET(DISC, disc);
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ASSERT_INFO(disc_env != NULL, dest_id, src_id);
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ASSERT_INFO(disc_env->env[conidx] != NULL, dest_id, src_id);
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if (disc_env->env[conidx]->nb_svc == 0) {
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// Retrieve DIS characteristics
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prf_extract_svc_info(ind, DISC_CHAR_MAX, &disc_dis_char[0],
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&(disc_env->env[conidx]->dis.chars[0]), 0, NULL,
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NULL);
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// Even if we get multiple responses we only store 1 range
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disc_env->env[conidx]->dis.svc.shdl = ind->start_hdl;
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disc_env->env[conidx]->dis.svc.ehdl = ind->end_hdl;
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}
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disc_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 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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uint8_t state = ke_state_get(dest_id);
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// Get the address of the environment
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struct disc_env_tag *disc_env = PRF_ENV_GET(DISC, disc);
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uint8_t conidx = KE_IDX_GET(dest_id);
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if (state == DISC_DISCOVERING) {
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uint8_t status = param->status;
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if (param->status == ATT_ERR_NO_ERROR) {
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if (disc_env->env[conidx]->nb_svc == 1) {
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status = prf_check_svc_char_validity(
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DISC_CHAR_MAX, disc_env->env[conidx]->dis.chars, disc_dis_char);
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}
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// too much services
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else if (disc_env->env[conidx]->nb_svc > 1) {
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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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status = PRF_ERR_STOP_DISC_CHAR_MISSING;
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}
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}
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disc_enable_rsp_send(disc_env, conidx, status);
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} else if (state == DISC_BUSY) {
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// an error occurs while performing read request
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if ((param->operation == GATTC_READ) &&
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(param->status != GAP_ERR_NO_ERROR)) {
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prf_client_att_info_rsp(&(disc_env->prf_env), conidx, DISC_RD_CHAR_RSP,
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param->status, NULL);
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}
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ke_state_set(dest_id, DISC_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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****************************************************************************************
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* @brief Handles reception of the @ref HTPC_RD_DATETIME_REQ message.
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* Check if the handle exists in profile(already discovered) and send request,
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*otherwise error to APP.
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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 disc_rd_char_req_handler(ke_msg_id_t const msgid,
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struct disc_rd_char_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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// 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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// Device Information Service Client Role Task Environment
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struct disc_env_tag *disc_env = PRF_ENV_GET(DISC, disc);
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ASSERT_INFO(disc_env != NULL, dest_id, src_id);
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if ((state == DISC_IDLE) && (disc_env->env[conidx] != NULL)) {
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uint16_t search_hdl = ATT_INVALID_HDL;
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// retrieve search handle
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if (param->char_code < DISC_CHAR_MAX) {
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search_hdl = disc_env->env[conidx]->dis.chars[param->char_code].val_hdl;
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}
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// Check if handle is viable
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if (search_hdl != ATT_INVALID_HDL) {
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// perform read request
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disc_env->env[conidx]->last_char_code = param->char_code;
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prf_read_char_send(&(disc_env->prf_env), conidx,
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disc_env->env[conidx]->dis.svc.shdl,
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disc_env->env[conidx]->dis.svc.ehdl, search_hdl);
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// enter in a busy state
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ke_state_set(dest_id, DISC_BUSY);
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} else {
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// invalid handle requested
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status = PRF_ERR_INEXISTENT_HDL;
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}
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} else if (state != DISC_FREE) {
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// request cannot be performed
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status = PRF_ERR_REQ_DISALLOWED;
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}
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// send error response if request fails
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if (status != GAP_ERR_NO_ERROR) {
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prf_client_att_info_rsp(&(disc_env->prf_env), conidx, DISC_RD_CHAR_RSP,
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status, NULL);
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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_READ_IND message.
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* Generic event received after every simple read command sent to peer server.
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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_read_ind_handler(ke_msg_id_t const msgid,
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struct gattc_read_ind 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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uint8_t state = ke_state_get(dest_id);
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if (state == DISC_BUSY) {
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// Get the address of the environment
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struct disc_env_tag *disc_env = PRF_ENV_GET(DISC, disc);
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ASSERT_INFO(disc_env != NULL, dest_id, src_id);
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ASSERT_INFO(disc_env->env[KE_IDX_GET(dest_id)] != NULL, dest_id, src_id);
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prf_client_att_info_rsp(&(disc_env->prf_env), KE_IDX_GET(dest_id),
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DISC_RD_CHAR_RSP, GAP_ERR_NO_ERROR, param);
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}
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return (KE_MSG_CONSUMED);
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}
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/// Default State handlers definition
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KE_MSG_HANDLER_TAB(disc){
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{DISC_RD_CHAR_REQ, (ke_msg_func_t)disc_rd_char_req_handler},
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{GATTC_READ_IND, (ke_msg_func_t)gattc_read_ind_handler},
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{GATTC_SDP_SVC_IND, (ke_msg_func_t)gattc_sdp_svc_ind_handler},
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{DISC_ENABLE_REQ, (ke_msg_func_t)disc_enable_req_handler},
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{GATTC_CMP_EVT, (ke_msg_func_t)gattc_cmp_evt_handler},
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};
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void disc_task_init(struct ke_task_desc *task_desc) {
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// Get the address of the environment
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struct disc_env_tag *disc_env = PRF_ENV_GET(DISC, disc);
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task_desc->msg_handler_tab = disc_msg_handler_tab;
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task_desc->msg_cnt = ARRAY_LEN(disc_msg_handler_tab);
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task_desc->state = disc_env->state;
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task_desc->idx_max = DISC_IDX_MAX;
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}
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#endif // BLE_DIS_CLIENT
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/// @} DISCTASK
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