--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/libcommon/buzzer.c	Tue Oct 25 23:57:15 2016 +0000
@@ -0,0 +1,57 @@
+/*
+ * Commands for exercising the Calypso's buzzer output, whatever
+ * actual hardware (piezo buzzer or vibrator) it may be driving
+ * on a given Calypso device.
+ */
+
+#include <sys/types.h>
+#include "types.h"
+
+#define	ARMIO_LOAD_TIM	(*(volatile u16 *) 0xFFFE4808)
+#define	BUZZ_LIGHT_REG	(*(volatile u16 *) 0xFFFE480E)
+#define	BUZZ_LEVEL_REG	(*(volatile u16 *) 0xFFFE4812)
+
+void
+cmd_buzlev(argbulk)
+	char *argbulk;
+{
+	char *argv[2];
+	u32 arg;
+
+	if (parse_args(argbulk, 0, 1, argv, 0) < 0)
+		return;
+	if (argv[0]) {
+		arg = strtoul(argv[0], 0, 0);
+		if (arg > 0xFFFF) {
+			printf("ERROR: argument out of range\n");
+			return;
+		}
+		BUZZ_LEVEL_REG = arg;
+	} else
+		printf("%04X\n", BUZZ_LEVEL_REG);
+}
+
+void
+cmd_buz(argbulk)
+	char *argbulk;
+{
+	char *argv[2];
+	u32 arg;
+	int c;
+
+	if (parse_args(argbulk, 1, 1, argv, 0) < 0)
+		return;
+	arg = strtoul(argv[0], 0, 0);
+	if (arg > 0xFFFF) {
+		printf("ERROR: argument out of range\n");
+		return;
+	}
+	ARMIO_LOAD_TIM = arg;
+	BUZZ_LIGHT_REG = 1;
+	for (;;) {
+		c = serial_in_poll();
+		if (c >= 0)
+			break;
+	}
+	BUZZ_LIGHT_REG = 0;
+}