1 files changed, 96 insertions, 0 deletions
diff --git a/circuitpython/ports/raspberrypi/common-hal/rtc/RTC.c b/circuitpython/ports/raspberrypi/common-hal/rtc/RTC.c
new file mode 100644
index 0000000..9bd10ab
--- /dev/null
+++ b/circuitpython/ports/raspberrypi/common-hal/rtc/RTC.c
@@ -0,0 +1,96 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright 2020 microDev
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include "shared-bindings/rtc/RTC.h"
+#include "common-hal/rtc/RTC.h"
+
+#include <sys/time.h>
+
+#include "py/runtime.h"
+#include "src/rp2_common/hardware_rtc/include/hardware/rtc.h"
+#include "src/rp2_common/hardware_clocks/include/hardware/clocks.h"
+
+void common_hal_rtc_init(void) {
+    datetime_t t = {
+        .year = 2020,
+        .month = 1,
+        .day = 1,
+        .dotw = 3,      // 0 is Sunday, so 3 is Wednesday
+        .hour = 0,
+        .min = 0,
+        .sec = 0
+    };
+
+    // Start the RTC
+    rtc_init();
+    rtc_set_datetime(&t);
+
+}
+
+void common_hal_rtc_get_time(timeutils_struct_time_t *tm) {
+    datetime_t t;
+    rtc_get_datetime(&t);
+
+    tm->tm_year = t.year;
+    tm->tm_mon = t.month;
+    tm->tm_mday = t.day;
+    tm->tm_wday = t.dotw;
+    tm->tm_hour = t.hour;
+    tm->tm_min = t.min;
+    tm->tm_sec = t.sec;
+
+    if (tm->tm_wday == 0) {
+        tm->tm_wday = 6;
+    } else {
+        tm->tm_wday -= 1;
+    }
+}
+
+void common_hal_rtc_set_time(timeutils_struct_time_t *tm) {
+    if (tm->tm_wday == 6) {
+        tm->tm_wday = 0;
+    } else {
+        tm->tm_wday += 1;
+    }
+
+    datetime_t t = {
+        .year = tm->tm_year,
+        .month = tm->tm_mon,
+        .day = tm->tm_mday,
+        .dotw = tm->tm_wday,
+        .hour = tm->tm_hour,
+        .min = tm->tm_min,
+        .sec = tm->tm_sec
+    };
+    rtc_set_datetime(&t);
+}
+
+int common_hal_rtc_get_calibration(void) {
+    return 0;
+}
+
+void common_hal_rtc_set_calibration(int calibration) {
+    mp_raise_NotImplementedError(translate("RTC calibration is not supported on this board"));
+}