AP_Common: add example sketch

libraries/AP_Common/examples/AP_Common/AP_Common.pde

@@ -0,0 +1,54 @@
+/// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
+//
+// Unit tests for the AP_Common code
+//
+
+#include <AP_HAL.h>
+#include <stdlib.h>
+#include <AP_Common.h>
+#include <AP_Progmem.h>
+#include <AP_Param.h>
+#include <AP_HAL_AVR.h>
+#include <AP_HAL_AVR_SITL.h>
+#include <AP_HAL_Empty.h>
+#include <AP_HAL_PX4.h>
+#include <AP_Math.h>
+
+const AP_HAL::HAL& hal = AP_HAL_BOARD_DRIVER;
+
+void test_high_low_byte(void)
+{
+    uint16_t i;
+    uint8_t high, low;
+
+    // test each value from 0 to 300
+    for (i=0; i<=300; i++) {
+        high = HIGHBYTE(i);
+        low = LOWBYTE(i);
+        hal.console->printf_P(PSTR("\ni:%u high:%u low:%u"),(unsigned int)i, (unsigned int)high, (unsigned int)low);
+    }
+
+    // test values from 300 to 65400 at increments of 200
+    for (i=301; i<=65400; i+=200) {
+        high = HIGHBYTE(i);
+        low = LOWBYTE(i);
+        hal.console->printf_P(PSTR("\ni:%u high:%u low:%u"),(unsigned int)i, (unsigned int)high, (unsigned int)low);
+    }
+}
+
+/*
+ *  euler angle tests
+ */
+void setup(void)
+{
+    hal.console->println("AP_Common tests\n");
+
+    test_high_low_byte();
+}
+
+void loop(void)
+{
+    // do nothing
+}
+
+AP_HAL_MAIN();