Diff: platform/mbed_rtc_time.cpp

Revision:

1:8a094db1347f

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/platform/mbed_rtc_time.cpp	Mon Nov 09 00:02:47 2020 -0500
@@ -0,0 +1,90 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2013 ARM Limited
+ *
+ * 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.
+ */
+#include "hal/rtc_api.h"
+
+#include "platform/mbed_critical.h"
+#include "platform/mbed_rtc_time.h"
+#include "platform/SingletonPtr.h"
+#include "platform/PlatformMutex.h"
+
+static SingletonPtr<PlatformMutex> _mutex;
+
+#if DEVICE_RTC
+static void (*_rtc_init)(void) = rtc_init;
+static int (*_rtc_isenabled)(void) = rtc_isenabled;
+static time_t (*_rtc_read)(void) = rtc_read;
+static void (*_rtc_write)(time_t t) = rtc_write;
+#else
+static void (*_rtc_init)(void) = NULL;
+static int (*_rtc_isenabled)(void) = NULL;
+static time_t (*_rtc_read)(void) = NULL;
+static void (*_rtc_write)(time_t t) = NULL;
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+#if defined (__ICCARM__)
+time_t __time32(time_t *timer)
+#else
+time_t time(time_t *timer)
+#endif
+
+{
+    _mutex->lock();
+    if (_rtc_isenabled != NULL) {
+        if (!(_rtc_isenabled())) {
+            set_time(0);
+        }
+    }
+    
+    time_t t = (time_t)-1;
+    if (_rtc_read != NULL) {
+        t = _rtc_read();
+    }
+
+    if (timer != NULL) {
+        *timer = t;
+    }
+    _mutex->unlock();
+    return t;
+}
+
+void set_time(time_t t) {
+    _mutex->lock();
+    if (_rtc_init != NULL) {
+        _rtc_init();
+    }
+    if (_rtc_write != NULL) {
+        _rtc_write(t);
+    }
+    _mutex->unlock();
+}
+
+void attach_rtc(time_t (*read_rtc)(void), void (*write_rtc)(time_t), void (*init_rtc)(void), int (*isenabled_rtc)(void)) {
+    _mutex->lock();
+    _rtc_read = read_rtc;
+    _rtc_write = write_rtc;
+    _rtc_init = init_rtc;
+    _rtc_isenabled = isenabled_rtc;
+    _mutex->unlock();
+}
+
+
+
+#ifdef __cplusplus
+}
+#endif