failed approach

gomspace/libutil/src/rtc.c

@@ -0,0 +1,42 @@
+/* Copyright (c) 2013-2017 GomSpace A/S. All rights reserved. */
+
+#include <gs/util/rtc.h>
+
+static const gs_rtc_driver_t * rtc_driver;
+static void * rtc_driver_data;
+
+gs_error_t gs_rtc_register(const gs_rtc_driver_t * driver, void * driver_data)
+{
+    rtc_driver = driver;
+    rtc_driver_data = driver_data;
+    return GS_OK;
+}
+
+gs_error_t gs_rtc_supported(void)
+{
+    return rtc_driver ? GS_OK : GS_ERROR_NOT_SUPPORTED;
+}
+
+gs_error_t gs_rtc_get_time(gs_timestamp_t * time)
+{
+    if (time == NULL) {
+        return GS_ERROR_ARG;
+    }
+
+    if (rtc_driver && rtc_driver->get_time) {
+        return rtc_driver->get_time(rtc_driver_data, time);
+    }
+    return GS_ERROR_NOT_SUPPORTED;
+}
+
+gs_error_t gs_rtc_set_time(const gs_timestamp_t * time)
+{
+    if (time == NULL) {
+        return GS_ERROR_ARG;
+    }
+
+    if (rtc_driver && rtc_driver->set_time) {
+        return rtc_driver->set_time(rtc_driver_data, time);
+    }
+    return GS_ERROR_NOT_SUPPORTED;
+}