500 lines
18 KiB
C
500 lines
18 KiB
C
/**
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****************************************************************************************
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* @addtogroup BLPCTASK
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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_BP_COLLECTOR)
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#include "att.h"
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#include "blpc.h"
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#include "blpc_task.h"
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#include "co_utils.h"
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#include "gap.h"
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#include "gapc_task.h"
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#include "gattc_task.h"
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#include "ke_mem.h"
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/*
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* DEFINES
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****************************************************************************************
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*/
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/// State machine used to retrieve blood pressure service characteristics
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/// information
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const struct prf_char_def blpc_bps_char[BLPC_CHAR_MAX] = {
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/// Blood Pressure Measurement
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[BLPC_CHAR_BP_MEAS] = {ATT_CHAR_BLOOD_PRESSURE_MEAS, ATT_MANDATORY,
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ATT_CHAR_PROP_IND},
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/// Intermediate Cuff pressure
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[BLPC_CHAR_CP_MEAS] = {ATT_CHAR_INTERMEDIATE_CUFF_PRESSURE, ATT_OPTIONAL,
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ATT_CHAR_PROP_NTF},
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/// Blood Pressure Feature
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[BLPC_CHAR_BP_FEATURE] = {ATT_CHAR_BLOOD_PRESSURE_FEATURE, ATT_MANDATORY,
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ATT_CHAR_PROP_RD},
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};
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/// State machine used to retrieve blood pressure service characteristic
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/// description information
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const struct prf_char_desc_def blpc_bps_char_desc[BLPC_DESC_MAX] = {
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/// Blood Pressure Measurement client config
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[BLPC_DESC_BP_MEAS_CLI_CFG] = {ATT_DESC_CLIENT_CHAR_CFG, ATT_MANDATORY,
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BLPC_CHAR_BP_MEAS},
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/// Intermediate Cuff pressure client config
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[BLPC_DESC_IC_MEAS_CLI_CFG] = {ATT_DESC_CLIENT_CHAR_CFG, ATT_MANDATORY,
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BLPC_CHAR_CP_MEAS},
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};
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/*
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* LOCAL FUNCTIONS 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 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 == BLPC_DISCOVERING) {
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uint8_t conidx = KE_IDX_GET(dest_id);
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struct blpc_env_tag *blpc_env = PRF_ENV_GET(BLPC, blpc);
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ASSERT_INFO(blpc_env != NULL, dest_id, src_id);
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ASSERT_INFO(blpc_env->env[conidx] != NULL, dest_id, src_id);
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if (blpc_env->env[conidx]->nb_svc == 0) {
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// Retrieve BLS characteristics and descriptors
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prf_extract_svc_info(ind, BLPC_CHAR_MAX, &blpc_bps_char[0],
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&blpc_env->env[conidx]->bps.chars[0], BLPC_DESC_MAX,
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&blpc_bps_char_desc[0],
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&blpc_env->env[conidx]->bps.descs[0]);
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// Even if we get multiple responses we only store 1 range
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blpc_env->env[conidx]->bps.svc.shdl = ind->start_hdl;
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blpc_env->env[conidx]->bps.svc.ehdl = ind->end_hdl;
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}
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blpc_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 BLPC_ENABLE_REQ message.
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* The handler enables the Blood Pressure Profile Collector 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 blpc_enable_req_handler(ke_msg_id_t const msgid,
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struct blpc_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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// Get connection index
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uint8_t conidx = KE_IDX_GET(dest_id);
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// Get state
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uint8_t state = ke_state_get(dest_id);
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// Blood pressure Client Role Task Environment
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struct blpc_env_tag *blpc_env = PRF_ENV_GET(BLPC, blpc);
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ASSERT_INFO(blpc_env != NULL, dest_id, src_id);
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if ((state == BLPC_IDLE) && (blpc_env->env[conidx] == NULL)) {
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// allocate environment variable for task instance
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blpc_env->env[conidx] = (struct blpc_cnx_env *)ke_malloc(
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sizeof(struct blpc_cnx_env), KE_MEM_ATT_DB);
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memset(blpc_env->env[conidx], 0, sizeof(struct blpc_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 BPS on peer
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prf_disc_svc_send(&(blpc_env->prf_env), conidx, ATT_SVC_BLOOD_PRESSURE);
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blpc_env->env[conidx]->last_uuid_req = ATT_SVC_BLOOD_PRESSURE;
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// Go to DISCOVERING state
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ke_state_set(dest_id, BLPC_DISCOVERING);
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}
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// normal connection, get saved att details
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else {
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blpc_env->env[conidx]->bps = param->bps;
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// send APP confirmation that can start normal connection to TH
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blpc_enable_rsp_send(blpc_env, conidx, GAP_ERR_NO_ERROR);
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}
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}
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else if (state != BLPC_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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blpc_enable_rsp_send(blpc_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_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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// Get the address of the environment
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struct blpc_env_tag *blpc_env = PRF_ENV_GET(BLPC, blpc);
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// Status
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uint8_t status;
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if (blpc_env != NULL) {
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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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if (state == BLPC_DISCOVERING) {
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status = param->status;
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if ((status == ATT_ERR_ATTRIBUTE_NOT_FOUND) ||
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(status == ATT_ERR_NO_ERROR)) {
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// Discovery
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// check characteristic validity
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if (blpc_env->env[conidx]->nb_svc == 1) {
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status = prf_check_svc_char_validity(
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BLPC_CHAR_MAX, blpc_env->env[conidx]->bps.chars, blpc_bps_char);
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}
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// too much services
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else if (blpc_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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// check descriptor validity
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if (status == GAP_ERR_NO_ERROR) {
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status = prf_check_svc_char_desc_validity(
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BLPC_DESC_MAX, blpc_env->env[conidx]->bps.descs,
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blpc_bps_char_desc, blpc_env->env[conidx]->bps.chars);
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}
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}
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blpc_enable_rsp_send(blpc_env, conidx, status);
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}
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else if (BLPC_BUSY) {
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switch (param->operation) {
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case GATTC_WRITE:
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case GATTC_WRITE_NO_RESPONSE: {
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struct blpc_cfg_indntf_rsp *wr_cfm = KE_MSG_ALLOC(
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BLPC_CFG_INDNTF_RSP, prf_dst_task_get(&(blpc_env->prf_env), conidx),
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prf_src_task_get(&(blpc_env->prf_env), conidx),
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blpc_cfg_indntf_rsp);
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// it will be a GATT status code
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wr_cfm->status = param->status;
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// send the message
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ke_msg_send(wr_cfm);
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} break;
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case GATTC_READ: {
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if (param->status != GAP_ERR_NO_ERROR) {
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prf_client_att_info_rsp((prf_env_t *)blpc_env->env[conidx], conidx,
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BLPC_RD_CHAR_RSP, param->status, NULL);
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}
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} break;
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default:
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break;
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}
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ke_state_set(prf_src_task_get(&blpc_env->prf_env, conidx), BLPC_IDLE);
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}
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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 BLPC_RD_CHAR_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 blpc_rd_char_req_handler(ke_msg_id_t const msgid,
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struct blpc_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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uint8_t state = ke_state_get(dest_id);
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uint8_t status = PRF_ERR_REQ_DISALLOWED;
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// Get the address of the environment
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struct blpc_env_tag *blpc_env = PRF_ENV_GET(BLPC, blpc);
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// Get connection index
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uint8_t conidx = KE_IDX_GET(dest_id);
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if ((state == BLPC_IDLE) && (blpc_env->env[conidx] != NULL)) {
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uint16_t search_hdl = ATT_INVALID_SEARCH_HANDLE;
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if ((param->char_code & BLPC_DESC_MASK) == BLPC_DESC_MASK) {
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search_hdl = blpc_env->env[conidx]
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->bps.descs[param->char_code & ~BLPC_DESC_MASK]
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.desc_hdl;
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} else {
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search_hdl = blpc_env->env[conidx]->bps.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_SEARCH_HANDLE) {
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prf_read_char_send(&(blpc_env->prf_env), conidx,
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blpc_env->env[conidx]->bps.svc.shdl,
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blpc_env->env[conidx]->bps.svc.ehdl, search_hdl);
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status = GAP_ERR_NO_ERROR;
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} else {
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status = PRF_ERR_INEXISTENT_HDL;
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}
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}
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if (status != GAP_ERR_NO_ERROR) {
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prf_client_att_info_rsp((prf_env_t *)blpc_env->env[conidx], conidx,
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BLPC_RD_CHAR_RSP, 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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// Get the address of the environment
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struct blpc_env_tag *blpc_env = PRF_ENV_GET(BLPC, blpc);
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// Get connection index
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uint8_t conidx = KE_IDX_GET(dest_id);
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prf_client_att_info_rsp(&blpc_env->prf_env, conidx, BLPC_RD_CHAR_RSP,
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GAP_ERR_NO_ERROR, param);
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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 BLPC_CFG_INDNTF_REQ message.
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* It allows configuration of the peer ind/ntf/stop characteristic for a
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*specified characteristic. Will return an error code if that cfg char does not
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*exist.
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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 blpc_cfg_indntf_req_handler(
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ke_msg_id_t const msgid, struct blpc_cfg_indntf_req const *param,
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ke_task_id_t const dest_id, ke_task_id_t const src_id) {
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uint16_t cfg_hdl = ATT_INVALID_SEARCH_HANDLE;
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// Get the address of the environment
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struct blpc_env_tag *blpc_env = PRF_ENV_GET(BLPC, blpc);
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// Get connection index
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uint8_t conidx = KE_IDX_GET(dest_id);
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// Status
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uint8_t status = PRF_ERR_REQ_DISALLOWED;
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if ((blpc_env->env[conidx] != NULL) && (ke_state_get(dest_id) == BLPC_IDLE)) {
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status = PRF_ERR_INVALID_PARAM;
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// get handle of the configuration characteristic to set and check if value
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// matches property
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switch (param->char_code) {
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case BLPC_CHAR_BP_MEAS: // can only IND
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{
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if ((param->cfg_val == PRF_CLI_STOP_NTFIND) ||
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(param->cfg_val == PRF_CLI_START_IND)) {
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cfg_hdl = blpc_env->env[conidx]
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->bps.descs[BLPC_DESC_BP_MEAS_CLI_CFG]
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.desc_hdl;
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}
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} break;
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case BLPC_CHAR_CP_MEAS: // can only NTF
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{
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if ((param->cfg_val == PRF_CLI_STOP_NTFIND) ||
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(param->cfg_val == PRF_CLI_START_NTF)) {
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cfg_hdl = blpc_env->env[conidx]
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->bps.descs[BLPC_DESC_IC_MEAS_CLI_CFG]
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.desc_hdl;
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}
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} break;
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default: {
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status = PRF_ERR_INEXISTENT_HDL;
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} break;
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}
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// check if the handle value exists
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if (cfg_hdl != ATT_INVALID_SEARCH_HANDLE) {
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// Send GATT Write Request
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prf_gatt_write_ntf_ind(&blpc_env->prf_env, conidx, cfg_hdl,
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param->cfg_val);
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// Set status
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status = GAP_ERR_NO_ERROR;
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}
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}
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if (status != GAP_ERR_NO_ERROR) {
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struct blpc_cfg_indntf_rsp *rsp =
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KE_MSG_ALLOC(BLPC_CFG_INDNTF_RSP, src_id, dest_id, blpc_cfg_indntf_rsp);
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// It will be an PRF status code
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rsp->status = status;
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// Send the message
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ke_msg_send(rsp);
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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_EVENT_IND message.
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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_event_ind_handler(ke_msg_id_t const msgid,
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struct gattc_event_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 conidx = KE_IDX_GET(dest_id);
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// Get the address of the environment
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struct blpc_env_tag *blpc_env = PRF_ENV_GET(BLPC, blpc);
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if (blpc_env->env[conidx] != NULL) {
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switch (param->type) {
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case GATTC_INDICATE: {
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// confirm that indication has been correctly received
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struct gattc_event_cfm *cfm =
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KE_MSG_ALLOC(GATTC_EVENT_CFM, src_id, dest_id, gattc_event_cfm);
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cfm->handle = param->handle;
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ke_msg_send(cfm);
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}
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/* no break */
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case GATTC_NOTIFY: {
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if ((param->handle ==
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blpc_env->env[conidx]->bps.chars[BLPC_CHAR_CP_MEAS].val_hdl) ||
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((param->handle ==
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blpc_env->env[conidx]->bps.chars[BLPC_CHAR_BP_MEAS].val_hdl))) {
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// build a BLPC_BP_MEAD_IND message with stable blood pressure value
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// code.
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struct blpc_bp_meas_ind *ind = KE_MSG_ALLOC(
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BLPC_BP_MEAS_IND, prf_dst_task_get(&(blpc_env->prf_env), conidx),
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prf_src_task_get(&(blpc_env->prf_env), conidx), blpc_bp_meas_ind);
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// Intermediate cuff pressure value
|
|
ind->flag_interm_cp = ((param->type == GATTC_NOTIFY) ? 0x01 : 0x00);
|
|
|
|
// unpack blood pressure measurement.
|
|
blpc_unpack_meas_value(&(ind->meas_val), (uint8_t *)param->value);
|
|
|
|
ke_msg_send(ind);
|
|
}
|
|
} break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
return (KE_MSG_CONSUMED);
|
|
}
|
|
|
|
/*
|
|
* GLOBAL VARIABLE DEFINITIONS
|
|
****************************************************************************************
|
|
*/
|
|
|
|
/// Default State handlers definition
|
|
KE_MSG_HANDLER_TAB(blpc){
|
|
{GATTC_SDP_SVC_IND, (ke_msg_func_t)gattc_sdp_svc_ind_handler},
|
|
{BLPC_ENABLE_REQ, (ke_msg_func_t)blpc_enable_req_handler},
|
|
{GATTC_CMP_EVT, (ke_msg_func_t)gattc_cmp_evt_handler},
|
|
{BLPC_RD_CHAR_REQ, (ke_msg_func_t)blpc_rd_char_req_handler},
|
|
{GATTC_READ_IND, (ke_msg_func_t)gattc_read_ind_handler},
|
|
{GATTC_EVENT_IND, (ke_msg_func_t)gattc_event_ind_handler},
|
|
{GATTC_EVENT_REQ_IND, (ke_msg_func_t)gattc_event_ind_handler},
|
|
{BLPC_CFG_INDNTF_REQ, (ke_msg_func_t)blpc_cfg_indntf_req_handler},
|
|
};
|
|
|
|
void blpc_task_init(struct ke_task_desc *task_desc) {
|
|
// Get the address of the environment
|
|
struct blpc_env_tag *blpc_env = PRF_ENV_GET(BLPC, blpc);
|
|
|
|
task_desc->msg_handler_tab = blpc_msg_handler_tab;
|
|
task_desc->msg_cnt = ARRAY_LEN(blpc_msg_handler_tab);
|
|
task_desc->state = blpc_env->state;
|
|
task_desc->idx_max = BLPC_IDX_MAX;
|
|
}
|
|
|
|
#endif /* (BLE_BP_COLLECTOR) */
|
|
/// @} BLPCTASK
|