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-rw-r--r--low-can-binding/binding/low-can-cb.cpp110
-rw-r--r--low-can-binding/binding/low-can-hat.cpp2
-rw-r--r--low-can-binding/binding/low-can-hat.hpp2
3 files changed, 114 insertions, 0 deletions
diff --git a/low-can-binding/binding/low-can-cb.cpp b/low-can-binding/binding/low-can-cb.cpp
index 0bb55038..1b7ce107 100644
--- a/low-can-binding/binding/low-can-cb.cpp
+++ b/low-can-binding/binding/low-can-cb.cpp
@@ -514,3 +514,113 @@ void write(struct afb_req request)
else
afb_req_fail(request, "error", NULL);
}
+
+static struct json_object *get_signals_value(const std::string& name)
+{
+ struct utils::signals_found sf;
+ struct json_object *ans = nullptr;
+
+ openxc_DynamicField search_key = build_DynamicField(name);
+ sf = utils::signals_manager_t::instance().find_signals(search_key);
+
+ if (sf.can_signals.empty())
+ {
+ AFB_WARNING("No signal(s) found for %s.", name.c_str());
+ return NULL;
+ }
+ ans = json_object_new_array();
+ for(const auto& sig: sf.can_signals)
+ {
+ struct json_object *jobj = json_object_new_object();
+ json_object_object_add(jobj, "event", json_object_new_string(sig->get_name().c_str()));
+ json_object_object_add(jobj, "value", json_object_new_double(sig->get_last_value()));
+ json_object_array_add(ans, jobj);
+ }
+
+ return ans;
+}
+void get(struct afb_req request)
+{
+ int rc = 0;
+ struct json_object* args = nullptr,
+ *json_name = nullptr;
+ json_object *ans = nullptr;
+
+ args = afb_req_json(request);
+
+ // Process about Raw CAN message on CAN bus directly
+ if (args != nullptr &&
+ (json_object_object_get_ex(args, "event", &json_name) && json_object_is_type(json_name, json_type_string) ))
+ {
+ ans = get_signals_value(json_object_get_string(json_name));
+ if (!ans)
+ rc = -1;
+ }
+ else
+ {
+ AFB_ERROR("Request argument malformed. Please use the following syntax:");
+ rc = -1;
+ }
+
+ if (rc >= 0)
+ afb_req_success(request, ans, NULL);
+ else
+ afb_req_fail(request, "error", NULL);
+}
+
+
+static struct json_object *list_can_message(const std::string& name)
+{
+ struct utils::signals_found sf;
+ struct json_object *ans = nullptr;
+
+ openxc_DynamicField search_key = build_DynamicField(name);
+ sf = utils::signals_manager_t::instance().find_signals(search_key);
+
+ if (sf.can_signals.empty() && sf.diagnostic_messages.empty())
+ {
+ AFB_WARNING("No signal(s) found for %s.", name.c_str());
+ return NULL;
+ }
+ ans = json_object_new_array();
+ for(const auto& sig: sf.can_signals)
+ {
+ json_object_array_add(ans,
+ json_object_new_string(sig->get_name().c_str()));
+ }
+ for(const auto& sig: sf.diagnostic_messages)
+ {
+ json_object_array_add(ans,
+ json_object_new_string(sig->get_name().c_str()));
+ }
+
+ return ans;
+}
+
+void list(struct afb_req request)
+{
+ int rc = 0;
+ json_object *ans = nullptr;
+ struct json_object* args = nullptr,
+ *json_name = nullptr;
+ args = afb_req_json(request);
+ const char *name;
+ if ((args != nullptr) &&
+ (json_object_object_get_ex(args, "event", &json_name) && json_object_is_type(json_name, json_type_string)))
+ {
+ name = json_object_get_string(json_name);
+ }
+ else
+ {
+ name = "*";
+ }
+
+ ans = list_can_message(name);
+ if (!ans)
+ rc = -1;
+
+ if (rc >= 0)
+ afb_req_success(request, ans, NULL);
+ else
+ afb_req_fail(request, "error", NULL);
+}
diff --git a/low-can-binding/binding/low-can-hat.cpp b/low-can-binding/binding/low-can-hat.cpp
index ae16f5d0..2b5baa36 100644
--- a/low-can-binding/binding/low-can-hat.cpp
+++ b/low-can-binding/binding/low-can-hat.cpp
@@ -57,6 +57,8 @@ extern "C"
{ .verb= "subscribe", .callback= subscribe, .auth= NULL, .info="Let subscribe to signals", .session= AFB_SESSION_NONE},
{ .verb= "unsubscribe", .callback= unsubscribe, .auth= NULL, .info="Let unsubscribe signals", .session= AFB_SESSION_NONE},
{ .verb= "write", .callback= write, .auth= &afb_auth_loa_1, .info="Write a single CAN message on a CAN bus", .session= AFB_SESSION_LOA_1},
+ { .verb= "get", .callback= get, .auth=NULL, .info="get a current value of CAN message", .session= AFB_SESSION_NONE},
+ { .verb= "list",.callback= list, .auth=NULL, .info="get a supported CAN message list", .session= AFB_SESSION_NONE},
{ .verb= NULL, .callback= NULL, .auth= NULL, .info=NULL, .session= 0}
};
diff --git a/low-can-binding/binding/low-can-hat.hpp b/low-can-binding/binding/low-can-hat.hpp
index 162a8e59..1f550a82 100644
--- a/low-can-binding/binding/low-can-hat.hpp
+++ b/low-can-binding/binding/low-can-hat.hpp
@@ -40,3 +40,5 @@ void auth(struct afb_req request);
void subscribe(struct afb_req request);
void unsubscribe(struct afb_req request);
void write(struct afb_req request);
+void get(struct afb_req request);
+void list(struct afb_req request);