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Diffstat (limited to 'src/low-can-binding-new.cpp')
| -rw-r--r-- | src/low-can-binding-new.cpp | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/src/low-can-binding-new.cpp b/src/low-can-binding-new.cpp new file mode 100644 index 0000000..3686c6b --- /dev/null +++ b/src/low-can-binding-new.cpp @@ -0,0 +1,113 @@ +/* + * Copyright (C) 2015, 2016 "IoT.bzh" + * Author "Romain Forlot" <romain.forlot@iot.bzh> + * Author "Loic Collignon" <loic.collignon@iot.bzh> + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "low-can-binding.hpp" + +/******************************************************************************** +* +* Subscription and unsubscription +* +*********************************************************************************/ + +std::vector<std::string> get_name(struct afb_req request) +{ + int i, n; + std::vector<std::string> ret; + struct json_object *args, *a, *x; + + args = afb_req_json(request); + if (args == NULL || !json_object_object_get_ex(args, "event", &a)) + ret.clear(); + else if (json_object_get_type(a) != json_type_array) + ret.push_back(json_object_get_string(a)); + else + { + n = json_object_array_length(a); + for (i = 0 ; i < n ; i++) { + x = json_object_array_get_idx(a, i); + ret.push_back(json_object_get_string(x)); + } + } + + return ret; +} + +static const struct afb_verb_desc_v1 verbs[]= +{ + { .name= "subscribe", .session= AFB_SESSION_NONE, .callback= subscribe, .info= "subscribe to notification of CAN bus messages." }, + { .name= "unsubscribe", .session= AFB_SESSION_NONE, .callback= unsubscribe, .info= "unsubscribe a previous subscription." } +}; + +static const struct afb_binding binding_desc { + AFB_BINDING_VERSION_1, + { + "CAN bus service", + "can", + verbs + } +}; + +extern "C" +{ + static void subscribe(struct afb_req request) + { + int ret; + std::vector<std::string> names; + + names = get_name(request); + if(names.empty()) + ret = subscribe_signals(request, "*"); + else + ret = subscribe_signals(request, names); + } + + static void unsubscribe(struct afb_req request) + { + subscribe_unsubscribe(request, false); + } + + const struct afb_binding *afbBindingV1Register (const struct afb_binding_interface *itf) + { + interface = itf; + + return &binding_desc; + } + + /** + * @brief Initialize the binding. + * + * @param[in] service Structure which represent the Application Framework Binder. + * + * @return Exit code, zero if success. + */ + int afbBindingV1ServiceInit(struct afb_service service) + { + int fd_conf; + fd_conf = afb_daemon_rootdir_open_locale(interface->daemon, "can_bus.json", O_RDONLY, NULL); + + /* Open CAN socket */ + can_bus_t can_bus_handler(interface, fd_conf); + if(can_bus_handler.init_can_dev() == 0) + { + can_bus_handler.start_threads(); + return 0; + } + + return 1; + } +};
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