add: gpio drivers

handlers/loop.c

@@ -0,0 +1,46 @@
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <time.h>
+
+#include <logger.h>
+#include <models/controller.h>
+#include <handlers.h>
+#include <drivers.h>
+#include <enums.h>
+#include <helpers.h>
+#include <wiringPi.h>
+#include <wiring_debug.h>
+
+void
+handler_loop(controller_t *controller)
+{
+    LOG_DEBUG("===== IDLE LOOP START =====");
+    for(uint_fast8_t i = 0; i < controller->relay_count; ++i)
+    {
+        relay_t *relay = controller->relays[i];
+        if(relay_is_active(relay, time(NULL)))
+        {
+            LOG_DEBUG("relay %d is active", i);
+            if(relay->number >= 2)
+            {
+                driver_gpio_set(relay, HIGH);
+            }
+            else
+            {
+                driver_piface_set(relay, HIGH);
+            }
+        }
+        else
+        {
+            if(relay->number >= 2)
+            {
+                driver_gpio_set(relay, LOW);
+            }
+            else
+            {
+                driver_piface_set(relay, LOW);
+            }
+        }
+    }
+}

handlers/poll.c

@@ -0,0 +1,50 @@
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <time.h>
+#include <lmdb.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <poll.h>
+#include <signal.h>
+
+#include <logger.h>
+#include <models/controller.h>
+#include <database.h>
+#include <config.h>
+#include <constants.h>
+#include <handlers.h>
+#include <drivers.h>
+#include <enums.h>
+#include <helpers.h>
+#include <wiringPi.h>
+#include <piFace.h>
+#include <wiring_debug.h>
+
+void
+handler_poll(struct pollfd *fds, controller_t *controller, MDB_env *mdb_env)
+{
+    /* An event on one of the fds has occurred. */
+    for(int i = 0; i < POLL_FDS_COUNT; i++) {
+        if(fds[i].revents & POLLIN)
+        {
+            /* data may be read on device number i. */
+            LOG_DEBUG("fd %i may read data", fds[i].fd);
+            switch(i)
+            {
+                case POLL_FDS_DISCOVERY:
+                    handler_discovery(fds[i].fd, controller);
+                    break;
+                case POLL_FDS_COMMAND:
+                    handler_command(fds[i].fd, controller);
+                    controller_save(controller, mdb_env);
+                    break;
+            }
+        }
+        if(fds[i].revents & POLLHUP)
+        {
+            /* A hangup has occurred on device number i. */
+            LOG_DEBUG("fd %i got closed", fds[i].fd);
+        }
+    }
+}