Make LUA works

- Added LUA library at link
- Make app-template crash build if a checked file fails
- Fix old defined variable CONTROL_LUA_PATH to a default
one in the binding data directory
- Add an example with unit conversion made in LUA

Change-Id: I1b4712bde32a38044ad6b14ebd38b6782fd01fe9
Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>

1 files changed, 56 insertions, 0 deletions

diff --git a/plugins/lua2c-interface.c b/plugins/lua2c-interface.c
new file mode 100644
index 0000000..d57cfbd
--- /dev/null
+++ b/plugins/lua2c-interface.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2016 "IoT.bzh"
+ * Author Romain Forlot <romain.forlot@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.
+ *
+*/
+
+#define _GNU_SOURCE  // needed for vasprintf
+
+#define AFB_BINDING_VERSION 2
+#include <afb/afb-binding.h>
+#include <systemd/sd-event.h>
+#include <json-c/json_object.h>
+#include <stdbool.h>
+#include <string.h>
+
+#include "ctl-config.h"
+#include "wrap-json.h"
+
+CTLP_LUALOAD
+CTLP_REGISTER("lua2c-interface");
+
+typedef struct {
+	struct pluginCBT* pluginHandle;
+} lowCANCtxT;
+
+// Call at initialisation time
+CTLP_ONLOAD(plugin, handle) {
+	lowCANCtxT *pluginCtx= (lowCANCtxT*)calloc (1, sizeof(lowCANCtxT));
+	pluginCtx->pluginHandle = (struct pluginCBT*)handle;
+
+	AFB_NOTICE ("Low-can plugin: label='%s' version='%s' info='%s'",
+		plugin->label,
+		plugin->version,
+		plugin->info);
+
+	return (void*)pluginCtx;
+}
+/*
+CTLP_LUA2C (LUAsetSignalValue, label, argsJ, context)
+{
+	AFB_NOTICE("label: %s, argsJ: %s", label, json_object_to_json_string(argsJ));
+	return 0;
+}
+*/