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-rw-r--r--binding/binding.pri6
-rw-r--r--binding/binding.pro10
-rw-r--r--binding/export.map1
-rw-r--r--binding/hvac-demo-binding.c374
4 files changed, 391 insertions, 0 deletions
diff --git a/binding/binding.pri b/binding/binding.pri
new file mode 100644
index 0000000..3448a56
--- /dev/null
+++ b/binding/binding.pri
@@ -0,0 +1,6 @@
+TEMPLATE = lib
+CONFIG += plugin use_c_linker
+CONFIG -= qt
+QMAKE_CFLAGS += -Wextra -Wconversion -Wno-unused-parameter -Werror=maybe-uninitialized -Werror=implicit-function-declaration -ffunction-sections -fdata-sections -Wl,--as-needed -Wl,--gc-sections
+
+DESTDIR = $${OUT_PWD}/../package/root/lib
diff --git a/binding/binding.pro b/binding/binding.pro
new file mode 100644
index 0000000..73ab515
--- /dev/null
+++ b/binding/binding.pro
@@ -0,0 +1,10 @@
+TARGET = hvac-demo-binding
+
+SOURCES = hvac-demo-binding.c
+
+LIBS += -Wl,--version-script=$$PWD/export.map
+
+CONFIG += link_pkgconfig
+PKGCONFIG += json-c afb-daemon
+
+include(binding.pri)
diff --git a/binding/export.map b/binding/export.map
new file mode 100644
index 0000000..52c1b4a
--- /dev/null
+++ b/binding/export.map
@@ -0,0 +1 @@
+{ global: afbBindingV1*; local: *; };
diff --git a/binding/hvac-demo-binding.c b/binding/hvac-demo-binding.c
new file mode 100644
index 0000000..fe20880
--- /dev/null
+++ b/binding/hvac-demo-binding.c
@@ -0,0 +1,374 @@
+/*
+ * Copyright (C) 2015, 2016 "IoT.bzh"
+ * Author "Romain Forlot"
+ * Author "Jose Bolo"
+ *
+ * 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
+
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <net/if.h>
+#include <linux/can.h>
+
+#include <json-c/json.h>
+
+#include <afb/afb-binding.h>
+#include <afb/afb-service-itf.h>
+
+#define CAN_DEV "vcan0"
+
+#define SIMULATE_HVAC
+
+static const struct afb_binding_interface *interface;
+
+// Initialize CAN hvac array that will be sent trough the socket
+static struct {
+ const char *name;
+ uint8_t value;
+} hvac_values[] = {
+ { "LeftTemperature", 21 },
+ { "RightTemperature", 21 },
+ { "Temperature", 21 },
+ { "FanSpeed", 0 }
+};
+
+struct can_handler {
+ int socket;
+ struct sockaddr_can txAddress;
+};
+
+static struct can_handler can_handler = { .socket = -1 };
+
+/*****************************************************************************************/
+/*****************************************************************************************/
+/** **/
+/** **/
+/** SECTION: HANDLE CAN DEVICE **/
+/** **/
+/** **/
+/*****************************************************************************************/
+/*****************************************************************************************/
+
+static int open_can_dev()
+{
+#if defined(SIMULATE_HVAC)
+ DEBUG(interface, "Defining can handler socket to 0 and return");
+ can_handler.socket = 0;
+ return 0;
+#else
+ struct ifreq ifr;
+
+ can_handler.socket = socket(PF_CAN, SOCK_RAW, CAN_RAW);
+ if (can_handler.socket < 0)
+ {
+ ERROR(interface, "socket could not be created");
+ }
+ else
+ {
+ // Attempts to open a socket to CAN bus
+ strcpy(ifr.ifr_name, CAN_DEV);
+ if(ioctl(can_handler.socket, SIOCGIFINDEX, &ifr) < 0)
+ {
+ ERROR(interface, "ioctl failed");
+ }
+ else
+ {
+ can_handler.txAddress.can_family = AF_CAN;
+ can_handler.txAddress.can_ifindex = ifr.ifr_ifindex;
+
+ // And bind it to txAddress
+ if (bind(can_handler.socket, (struct sockaddr *)&can_handler.txAddress, sizeof(can_handler.txAddress)) < 0)
+ {
+ ERROR(interface, "bind failed");
+ }
+ else {
+ return 0;
+ }
+ }
+ close(can_handler.socket);
+ can_handler.socket = -1;
+ }
+ return -1;
+#endif
+}
+
+// Get original get temperature function from cpp hvacplugin code
+static uint8_t to_can_temp(uint8_t value)
+{
+ int result = ((0xF0 - 0x10) / 15) * value - 16;
+ if (result < 0x10)
+ result = 0x10;
+ if (result > 0xF0)
+ result = 0xF0;
+
+ return (uint8_t)result;
+}
+
+static uint8_t read_temp_left_zone()
+{
+ return hvac_values[0].value;
+}
+
+static uint8_t read_temp_right_zone()
+{
+ return hvac_values[1].value;
+}
+
+static uint8_t read_temp()
+{
+ return (uint8_t)(((int)read_temp_left_zone() + (int)read_temp_right_zone()) >> 1);
+}
+
+static uint8_t read_fanspeed()
+{
+ return hvac_values[3].value;
+}
+
+static int write_can()
+{
+ struct can_frame txCanFrame;
+ int rc = 0;
+
+ rc = can_handler.socket;
+ if (rc >= 0)
+ {
+ // Hardcoded can_id and dlc (data lenght code)
+ txCanFrame.can_id = 0x30;
+ txCanFrame.can_dlc = 8;
+ txCanFrame.data[0] = to_can_temp(read_temp_left_zone());
+ txCanFrame.data[1] = to_can_temp(read_temp_right_zone());
+ txCanFrame.data[2] = to_can_temp(read_temp());
+ txCanFrame.data[3] = 0xf0;
+ txCanFrame.data[4] = read_fanspeed();
+ txCanFrame.data[5] = 1;
+ txCanFrame.data[6] = 0;
+ txCanFrame.data[7] = 0;
+
+#if defined(SIMULATE_HVAC)
+ DEBUG(interface, "WRITING CAN: %d %d [%02x %02x %02x %02x %02x %02x %02x %02x]\n",
+ txCanFrame.can_id, txCanFrame.can_dlc,
+ txCanFrame.data[0], txCanFrame.data[1], txCanFrame.data[2], txCanFrame.data[3],
+ txCanFrame.data[4], txCanFrame.data[5], txCanFrame.data[6], txCanFrame.data[7]);
+#else
+ rc = sendto(can_handler.socket, &txCanFrame, sizeof(struct can_frame), 0,
+ (struct sockaddr*)&can_handler.txAddress, sizeof(can_handler.txAddress));
+ if (rc < 0)
+ {
+ ERROR(interface, "Sending can frame failed");
+ }
+#endif
+ }
+ else
+ {
+ ERROR(interface, "socket not initialized");
+ }
+ return rc;
+}
+
+/*****************************************************************************************/
+/*****************************************************************************************/
+/** **/
+/** **/
+/** SECTION: BINDING VERBS IMPLEMENTATION **/
+/** **/
+/** **/
+/*****************************************************************************************/
+/*****************************************************************************************/
+
+/*
+ * @brief Get fan speed HVAC system
+ *
+ * @param struct afb_req : an afb request structure
+ *
+ */
+static void get_fanspeed(struct afb_req request)
+{
+ json_object *ret_json;
+ uint8_t fanspeed = read_fanspeed();
+
+ ret_json = json_object_new_object();
+ json_object_object_add(ret_json, "FanSpeed", json_object_new_int(fanspeed));
+
+ afb_req_success(request, ret_json, NULL);
+}
+
+/*
+ * @brief Read Consign right zone temperature for HVAC system
+ *
+ * @param struct afb_req : an afb request structure
+ *
+ */
+static void get_temp_right_zone(struct afb_req request)
+{
+ json_object *ret_json;
+ uint8_t temp = read_temp_right_zone();
+
+ ret_json = json_object_new_object();
+ json_object_object_add(ret_json, "RightTemperature", json_object_new_int(temp));
+
+ afb_req_success(request, ret_json, NULL);
+}
+
+/*
+ * @brief Read Consign left zone temperature for HVAC system
+ *
+ * @param struct afb_req : an afb request structure
+ *
+ */
+static void get_temp_left_zone(struct afb_req request)
+{
+ json_object *ret_json;
+ uint8_t temp = read_temp_left_zone();
+
+ ret_json = json_object_new_object();
+ json_object_object_add(ret_json, "LeftTemperature", json_object_new_int(temp));
+
+ afb_req_success(request, ret_json, NULL);
+}
+
+/*
+ * @brief Read all values
+ *
+ * @param struct afb_req : an afb request structure
+ *
+ */
+static void get(struct afb_req request)
+{
+ DEBUG(interface, "Getting all values");
+ json_object *ret_json;
+
+ ret_json = json_object_new_object();
+ json_object_object_add(ret_json, "LeftTemperature", json_object_new_int(read_temp_left_zone()));
+ json_object_object_add(ret_json, "RightTemperature", json_object_new_int(read_temp_right_zone()));
+ json_object_object_add(ret_json, "FanSpeed", json_object_new_int(read_fanspeed()));
+
+ afb_req_success(request, ret_json, NULL);
+}
+
+/*
+ * @brief Set a component value using a json object retrieved from request
+ *
+ * @param struct afb_req : an afb request structure
+ *
+ */
+static void set(struct afb_req request)
+{
+ int i, rc, x, changed;
+ struct json_object *query, *val;
+ uint8_t values[sizeof hvac_values / sizeof *hvac_values];
+ uint8_t saves[sizeof hvac_values / sizeof *hvac_values];
+
+ /* records initial values */
+ DEBUG(interface, "Records initial values");
+ i = (int)(sizeof hvac_values / sizeof *hvac_values);
+ while (i) {
+ i--;
+ values[i] = saves[i] = hvac_values[i].value;
+ }
+
+ /* Loop getting arguments */
+ query = afb_req_json(request);
+ changed = 0;
+ i = (int)(sizeof hvac_values / sizeof *hvac_values);
+ DEBUG(interface, "Looping for args. i: %d", i);
+ while (i)
+ {
+ i--;
+ DEBUG(interface, "Searching... query: %s, i: %d, comp: %s", json_object_to_json_string(query), i, hvac_values[i].name);
+ if (json_object_object_get_ex(query, hvac_values[i].name, &val))
+ {
+ DEBUG(interface, "We got it. Tests if it is an int or not.");
+ if (!json_object_is_type(val, json_type_int))
+ {
+ afb_req_fail_f(request, "bad-request",
+ "argument '%s' isn't integer", hvac_values[i].name);
+ return;
+ }
+ DEBUG(interface, "We get an 'int'. Hail for the int: %d", x);
+ x = json_object_get_int(val);
+ if (x < 0 || x > 255)
+ {
+ afb_req_fail_f(request, "bad-request",
+ "argument '%s' is out of bounds", hvac_values[i].name);
+ return;
+ }
+ if (values[i] != x) {
+ values[i] = (uint8_t)x;
+ changed = 1;
+ }
+ }
+ DEBUG(interface, "Not found !");
+ }
+
+ /* attemps to set new values */
+ DEBUG(interface, "Diff: %d", changed);
+ if (changed)
+ {
+ i = (int)(sizeof hvac_values / sizeof *hvac_values);
+ while (i) {
+ i--;
+ hvac_values[i].value = values[i];
+ }
+ rc = write_can();
+ if (rc >= 0)
+ afb_req_success(request, NULL, NULL);
+ else {
+ /* restore initial values */
+ i = (int)(sizeof hvac_values / sizeof *hvac_values);
+ while (i) {
+ i--;
+ hvac_values[i].value = saves[i];
+ }
+ afb_req_fail(request, "error", "CAN error");
+ }
+ }
+ else {
+ afb_req_success(request, NULL, "No changes");
+ }
+}
+
+// TODO: Have to change session management flag to AFB_SESSION_CHECK to use token auth
+static const struct afb_verb_desc_v1 verbs[]= {
+ {"get_temp_left_zone" , AFB_SESSION_NONE, get_temp_left_zone , "Get the left zone temperature"},
+ {"get_temp_right_zone" , AFB_SESSION_NONE, get_temp_right_zone , "Get the right zone temperature"},
+ {"get_fanspeed" , AFB_SESSION_NONE, get_fanspeed , "Read fan speed"},
+ {"get" , AFB_SESSION_NONE, get , "Read all values"},
+ {"set" , AFB_SESSION_NONE, set , "Set a HVAC component value"},
+ {NULL}
+};
+
+static const struct afb_binding binding_desc = {
+ .type = AFB_BINDING_VERSION_1,
+ .v1 = {
+ .info = "hvac service",
+ .prefix = "hvac",
+ .verbs = verbs
+ }
+};
+
+const struct afb_binding *afbBindingV1Register (const struct afb_binding_interface *itf)
+{
+ interface = itf;
+
+ return &binding_desc;
+}
+
+int afbBindingV1ServiceInit(struct afb_service service)
+{
+ return open_can_dev();
+}