--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cs/drivers/drv_app/buzzer/buzzer.c	Fri May 15 01:28:16 2020 +0000
@@ -0,0 +1,177 @@
+/*
+ * BUZZER.C
+ *
+ * Buzzer driver
+ *
+ * Target : ARM
+ *
+ * Copyright (c) Texas Instruments 2000
+ *
+ */
+
+
+#include "main/sys_types.h"
+#include "memif/mem.h"
+#include "armio/armio.h"
+#include "buzzer.h"
+#include "timer/timer.h"
+
+#include "board.cfg"
+
+/* 
+ * Initialize buzzer
+ *
+ */
+void BZ_Init(void)
+{
+}
+
+/*
+ * BZ_Enable / BZ_Disable
+ * 
+ * Enable / disable buzzer
+ * 
+ * The buzzer uses timer 1
+ */ 
+void BZ_Enable(void)
+{
+  *((volatile SYS_UWORD16 *) ARMIO_PWM_CNTL) |= BZ_ON; 
+}
+
+void BZ_Disable(void)
+{
+  *((volatile SYS_UWORD16 *) ARMIO_PWM_CNTL) &= ~BZ_ON; 
+}
+
+/*
+ * BZ_Tone
+ * 
+ * Changes the timer count to set the tone frequency in Hz
+ * 
+ * 58 ticks= 1 ms, which give a frequency of 500 Hz
+ *
+ *
+ */
+void BZ_Tone(int f)
+{
+    if (f > 255)
+    {
+        f = 255;
+    }
+  *((volatile SYS_UWORD16 *) ARMIO_LOAD_TIM) = f;
+}
+
+/*
+ * BZ_Volume
+ * 
+ * Changes the buzzer volume
+ * 
+ */
+void BZ_Volume(int v)
+{
+  // the level range is 0 up to 63
+    if (v > 63)
+    {
+        v = 63;
+    }
+  *((volatile SYS_UWORD16 *) BZ_LEVEL) = v;
+}
+
+/*
+ * BZ_KeyBeep_ON
+ * 
+ * Audio feedback to user after keybeep
+ *
+ */
+void BZ_KeyBeep_ON(void)
+{
+  volatile int i;
+
+  BZ_Init ();
+  BZ_Volume (255);
+  BZ_Enable ();
+  BZ_Tone (50);
+  
+  for (i = 0; i < 17000; i++)
+    ;
+  
+  BZ_Disable ();
+}
+
+
+
+/*
+ * BZ_KeyBeep_OFF
+ * 
+ * Audio feedback to user after keybeep
+ *
+ */
+void BZ_KeyBeep_OFF(void)
+{
+  volatile int i;
+
+  BZ_Init ();
+  BZ_Volume (255);
+  BZ_Enable ();
+  BZ_Tone (100);
+  
+  for (i = 0; i < 17000; i++)
+    ;
+  
+  BZ_Disable ();
+}
+
+
+
+/*
+ * LT_Enable / LT_Disable
+ * 
+ * Enable / disable LCD lighting
+ * 
+ */
+void LT_Enable(void)
+{
+#if (BOARD == 7 || BOARD == 8 || BOARD == 9)
+   *((volatile SYS_UWORD16 *) ARMIO_PWM_CNTL) |= LT_ON;
+#endif
+}
+void LT_Disable(void)
+{
+#if (BOARD == 7 || BOARD == 8 || BOARD == 9)
+   *((volatile SYS_UWORD16 *) ARMIO_PWM_CNTL) &= ~LT_ON;
+#endif
+}
+
+
+/*
+ * LT_Level
+ * 
+ * Set LCD display level
+ */
+void LT_Level(SYS_WORD8 level)
+{
+   if (level > 63) level=63;
+
+   // the level range is 0 up to 63
+   *((volatile SYS_UWORD16 *) LT_LEVEL) = level;
+}
+
+
+/*
+ * LT_Status
+ * 
+ * Return lighting status for sleep manager
+ * 
+ */
+SYS_BOOL LT_Status(void)
+{
+#if (BOARD == 7 || BOARD == 8 || BOARD == 9)
+   if (*((volatile SYS_UWORD16 *) ARMIO_PWM_CNTL) & LT_ON) 
+      return(1);		 // the light is on
+   else
+      return(0); 
+#endif
+
+return(0); 
+
+}