4 files changed, 64 insertions, 0 deletions
diff --git a/frontends/calculator/CEdev/examples/real_time_clock/makefile b/frontends/calculator/CEdev/examples/real_time_clock/makefile
new file mode 100644
index 0000000..1f1b36b
--- /dev/null
+++ b/frontends/calculator/CEdev/examples/real_time_clock/makefile
@@ -0,0 +1,15 @@
+# ----------------------------
+# Set NAME to the program name
+# Set ICON to the png icon file name
+# Set DESCRIPTION to display within a compatible shell
+# Set COMPRESSED to "YES" to create a compressed program
+# ----------------------------
+
+NAME        ?= DEMO
+COMPRESSED  ?= NO
+ICON        ?= iconc.png
+DESCRIPTION ?= "C SDK Demo"
+
+# ----------------------------
+
+include $(CEDEV)/include/.makefile
diff --git a/frontends/calculator/CEdev/examples/real_time_clock/readme.md b/frontends/calculator/CEdev/examples/real_time_clock/readme.md
new file mode 100644
index 0000000..08554eb
--- /dev/null
+++ b/frontends/calculator/CEdev/examples/real_time_clock/readme.md
@@ -0,0 +1,10 @@
+### Real Time Clock Demo
+
+This demo demonstrates how to use the basics of the real time clock (RTC)
+
+![Screenshot](screenshot.gif)
+
+---
+
+This demo is a part of the C SDK Toolchain for use on the CE.
+
diff --git a/frontends/calculator/CEdev/examples/real_time_clock/screenshot.gif b/frontends/calculator/CEdev/examples/real_time_clock/screenshot.gif
new file mode 100644
index 0000000..3e81f11
--- /dev/null
+++ b/frontends/calculator/CEdev/examples/real_time_clock/screenshot.gif
diff --git a/frontends/calculator/CEdev/examples/real_time_clock/src/main.c b/frontends/calculator/CEdev/examples/real_time_clock/src/main.c
new file mode 100644
index 0000000..1aa24cb
--- /dev/null
+++ b/frontends/calculator/CEdev/examples/real_time_clock/src/main.c
@@ -0,0 +1,39 @@
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <tice.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+unsigned int seconds = 0;
+
+void main(void) {
+
+    /* Clear the homescreen */
+    os_ClrHome();
+
+    /* Randomize things */
+    srand(rtc_Time());
+
+    /* Configure the RTC */
+    rtc_LoadSeconds = rtc_LoadMinutes = rtc_LoadHours = rtc_LoadDays = 0;
+    rtc_Control = RTC_ENABLE | RTC_LOAD | RTC_SEC_INT_SOURCE;
+
+    /* Wait for the RTC to load in the new values and then acknowledge all the interrupts */
+    while (rtc_IsBusy());
+    rtc_IntAcknowledge = RTC_INT_MASK;
+
+    /* Wait until 5 seconds have passed */
+    while (seconds < 5) {
+
+        /* If a second passed, increment the second counter */
+        if (rtc_IntStatus & RTC_SEC_INT) {
+            memset(lcd_Ram, randInt(0,255), LCD_SIZE);
+            seconds++;
+
+            rtc_IntAcknowledge = rtc_IntStatus;
+        }
+    }
+}