Diff: mbed-dev/targets/TARGET_Atmel/TARGET_SAM_CortexM4/rtc_api.c

Revision:

18:6a4db94011d3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-dev/targets/TARGET_Atmel/TARGET_SAM_CortexM4/rtc_api.c	Sun May 14 23:18:57 2017 +0000
@@ -0,0 +1,98 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2015 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 "mbed_assert.h"
+#include "rtc_api.h"
+#include "cmsis.h"
+#include "sysclk.h"
+#include "rtc.h"
+
+static int rtc_inited = 0;
+
+extern uint8_t g_sys_init;
+
+void rtc_init(void)
+{
+    if (g_sys_init == 0) {
+        sysclk_init();
+        system_board_init();
+        g_sys_init = 1;
+    }
+    /* Default RTC configuration, 24-hour mode */
+    rtc_set_hour_mode(RTC, 0);
+    rtc_inited = 1;
+}
+
+void rtc_free(void)
+{
+    /*This is a free running peripheral and cannot be disabled*/
+    rtc_inited = 0;
+}
+
+
+int rtc_isenabled(void)
+{
+    return rtc_inited;
+}
+
+
+time_t rtc_read(void)
+{
+    if (!rtc_inited) {
+        /* Return invalid time for now! */
+        return 0;
+    }
+    struct tm timeinfo;
+    uint32_t ul_hour, ul_minute, ul_second;
+    uint32_t ul_year, ul_month, ul_day, ul_week;
+
+    rtc_get_time(RTC, &ul_hour, &ul_minute, &ul_second);
+    rtc_get_date(RTC, &ul_year, &ul_month, &ul_day, &ul_week);
+
+    timeinfo.tm_sec = ul_second;
+    timeinfo.tm_min = ul_minute;
+    timeinfo.tm_hour = ul_hour;
+    timeinfo.tm_mday = ul_day;
+    timeinfo.tm_wday = ul_week;
+    timeinfo.tm_mon = ul_month;
+    timeinfo.tm_year = (ul_year - 1900);
+
+    /* Convert to timestamp */
+    time_t t = mktime(&timeinfo);
+    return t;
+}
+
+void rtc_write(time_t t)
+{
+    if (!rtc_inited) {
+        /* Initialize the RTC is not yet initialized */
+        rtc_init();
+    }
+    struct tm *timeinfo = localtime(&t);
+    uint32_t ul_hour, ul_minute, ul_second;
+    uint32_t ul_year, ul_month, ul_day, ul_week;
+
+    ul_second = timeinfo->tm_sec;
+    ul_minute = timeinfo->tm_min;
+    ul_hour = timeinfo->tm_hour;
+    ul_day = timeinfo->tm_mday;
+    ul_week = timeinfo->tm_wday;
+    ul_month = timeinfo->tm_mon;
+    ul_year = timeinfo->tm_year;
+
+    /* Set the RTC  */
+    rtc_set_time(RTC, ul_hour, ul_minute, ul_second);
+    rtc_set_date(RTC, ul_year, ul_month, ul_day, ul_week);
+}
\ No newline at end of file