Import Mbed OS hard-float snapshot

targets/TARGET_Samsung/TARGET_SIDK_S1SBP6A/rtc_api.c

@@ -0,0 +1,111 @@
+/****************************************************************************
+ *
+ * Copyright 2020 Samsung Electronics All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+#if DEVICE_RTC
+#include <stdlib.h>
+#include "cmsis.h"
+#include "rtc_api.h"
+#include "mbed_mktime.h"
+#include "mbed_critical.h"
+#include "mbed_error.h"
+#include "mbed_debug.h"
+
+#define BP6A_RTC_START_TIME     946684800
+static bool rtc_initialized = false;
+static bool g_before2000 = false;
+
+void rtc_init(void)
+{
+    if (!rtc_initialized) {
+        uint32_t sys_clk = bp6a_cmu_get_clock_freq(CMU_FCLK_AHBCLK);
+
+        bp6a_set_rtc_delay((uint32_t)((float)sys_clk * 2 / 32789));
+        bp6a_rtc_init();
+        rtc_initialized = true;
+    }
+}
+
+void rtc_free(void)
+{
+    rtc_initialized = 0;
+}
+
+int rtc_isenabled(void)
+{
+    return 1;
+}
+
+time_t rtc_read(void)
+{
+    struct rtc_bcd_s rtc_val;
+    struct tm timeinfo;
+    time_t t;
+
+    bp6a_rtc_getdatetime(&rtc_val);
+
+    timeinfo.tm_sec = bp6a_rtc_bcd2bin(rtc_val.sec);
+    timeinfo.tm_min = bp6a_rtc_bcd2bin(rtc_val.min);
+    timeinfo.tm_hour = bp6a_rtc_bcd2bin(rtc_val.hour);
+    timeinfo.tm_mday = bp6a_rtc_bcd2bin(rtc_val.day);
+    timeinfo.tm_mon = bp6a_rtc_bcd2bin(rtc_val.mon);
+    timeinfo.tm_year = bp6a_rtc_bcd2bin(rtc_val.year);
+    timeinfo.tm_year += 100;
+    if (_rtc_maketime(&timeinfo, &t, RTC_4_YEAR_LEAP_YEAR_SUPPORT) == false) {
+        return 0;
+    }
+
+    if (g_before2000) {
+        t -= BP6A_RTC_START_TIME;
+    }
+    return t;
+}
+
+void rtc_write(time_t t)
+{
+    struct rtc_bcd_s rtc_val;
+    struct tm timeinfo;
+
+    /*BP6A : The implicit number of thousands place is 20.*/
+    if (t < BP6A_RTC_START_TIME) {
+        g_before2000 = true;
+        t += BP6A_RTC_START_TIME;
+    } else {
+        g_before2000 = false;
+    }
+
+
+    if (_rtc_localtime(t, &timeinfo, RTC_4_YEAR_LEAP_YEAR_SUPPORT) == false) {
+        return;
+    }
+
+    rtc_val.sec = timeinfo.tm_sec;
+    rtc_val.min = timeinfo.tm_min;
+    rtc_val.hour = timeinfo.tm_hour;
+    rtc_val.day = timeinfo.tm_mday;
+    rtc_val.mon = timeinfo.tm_mon;
+    rtc_val.year = timeinfo.tm_year - 100;
+
+    bp6a_rtc_setdatetime(&rtc_val);
+
+}
+
+#endif /* DEVICE_RTC */