feat(ipod): Piezo beeps now match headphone beeps

apps/misc.c

@@ -1007,6 +1007,13 @@ void system_sound_play(enum system_sound sound)
 
     if (*params->setting)
     {
+#if defined(HAVE_HARDWARE_CLICK) && !defined(SIMULATOR)
+        if (global_settings.keyclick_hardware)
+        {
+            piezo_button_beep(params->frequency,
+                              params->duration, true);
+        }
+#endif
         beep_play(params->frequency, params->duration,
                   params->amplitude * *params->setting);
     }
@@ -1068,23 +1075,7 @@ void keyclick_click(bool rawbutton, int action)
         do_beep = keyclick_current_callback(action, keyclick_data);
     keyclick_current_callback = NULL;
 
-    if (do_beep)
-    {
-#ifdef HAVE_HARDWARE_CLICK
-        if (global_settings.keyclick)
-        {
-            system_sound_play(SOUND_KEYCLICK);
-        }
-        if (global_settings.keyclick_hardware)
-        {
-#if !defined(SIMULATOR)
-            piezo_button_beep(false, false);
-#endif
-        }
-#else
-        system_sound_play(SOUND_KEYCLICK);
-#endif
-    }
+    if (do_beep) { system_sound_play(SOUND_KEYCLICK); }
 }
 
 /* Return the ReplayGain mode adjusted by other relevant settings */

firmware/target/arm/ipod/piezo.c

@@ -158,7 +158,7 @@ bool piezo_busy(void)
     return !queue_empty(&piezo_queue);
 }
 
-/*  conversion factor based on the following data
+/*  conversion factor used to based on the following data
 
         period          Hz
         10              8547
@@ -174,11 +174,33 @@ bool piezo_busy(void)
 
     someone with better recording/analysing equipment should be able
     to get more accurate figures
+
+
+    Above measurements are not measuring fundamental frequency,
+    but rather a subharmonic frequency
+
+    Given a 192khz frequency with a divisor of 1,
+    these following values should be measurable
+
+        Divisor         Hz
+        10              19200
+        20              9600
+        30              6400
+        40              4800
+        50              3840
+        60              3200
+        70              2743
+        80              2400
+        90              2133
+        100             1920
+
 */
+
 unsigned int piezo_hz(unsigned int hz)
 {
     if (hz > 0)
-        return 91225/hz;
+        // Calculated by measuring frequency cycle time on ipodvideo
+        return 192000/hz;
     else
         return 0;
 }
@@ -193,19 +215,16 @@ void piezo_init(void)
             IF_COP(, CPU));
 }
 
-void piezo_button_beep(bool beep, bool force)
+void piezo_button_beep(unsigned short hz, unsigned short dur, bool force)
 {
     /* old on clickwheel action - piezo_play_for_usec(50, 0x80, 400);
        old on button action - piezo_play_for_usec(50, 0x80, 3000); */
 
-    if (force)
+    if (force) {
         piezo_clear();
-
-    if (queue_empty(&piezo_queue))
+        piezo_play_for_usec(piezo_hz(hz), 0x80, dur * 1000);
+    } else if (queue_empty(&piezo_queue))
     {
-        if (beep)
-            piezo_play_for_tick(40, 0x80, HZ/5);
-        else
-            piezo_play_for_usec(91, 0x80, 4000);
+        piezo_play_for_usec(piezo_hz(hz), 0x80, dur * 1000);
     }
 }

firmware/target/arm/ipod/piezo.h

@@ -29,4 +29,4 @@ void piezo_stop(void);
 void piezo_clear(void);
 bool piezo_busy(void);
 unsigned int piezo_hz(unsigned int hz);
-void piezo_button_beep(bool beep, bool force);
+void piezo_button_beep(unsigned short hz, unsigned short dur, bool force);

firmware/target/arm/philips/piezo.c

@@ -56,10 +56,11 @@ void piezo_init(void)
 {
 }
 
-void piezo_button_beep(bool beep, bool force)
+void piezo_button_beep(unsigned short hz, unsigned short dur, bool force)
 {
     /* hw can only do a click */
-    (void)beep;
+    (void)hz;
+    (void)dur;
     (void)force;
     piezo_hw_voltage_on();
     udelay(1000);

firmware/target/arm/philips/piezo.h

@@ -20,4 +20,4 @@
  ****************************************************************************/
 
 void piezo_init(void);
-void piezo_button_beep(bool beep, bool force);
+void piezo_button_beep(unsigned short hz, unsigned short dur, bool force);

firmware/target/arm/s5l8700/ipodnano2g/piezo-nano2g.c

@@ -81,7 +81,7 @@ void piezo_init(void)
     beeping = 0;
 }
 
-void piezo_button_beep(bool beep, bool force)
+void piezo_button_beep(unsigned short hz, unsigned short dur, bool force)
 {
     if (force)
         while (beeping)
@@ -89,9 +89,8 @@ void piezo_button_beep(bool beep, bool force)
 
     if (!beeping)
     {
-        if (beep)
-            piezo_start(22, 457);
-        else
-            piezo_start(40, 4);
+        /* Cycle count estimated for durations up to 2048ms 
+           and with frequencies in 4hz increments           */
+        piezo_start(50000/hz, (dur << 5) / ((7999 / (hz >> 2)) + 1));
     }
 }

firmware/target/arm/s5l8700/ipodnano2g/piezo.h

@@ -23,4 +23,4 @@ void piezo_init(void);
 void piezo_stop(void);
 void piezo_clear(void);
 bool piezo_busy(void);
-void piezo_button_beep(bool beep, bool force);
+void piezo_button_beep(unsigned short hz, unsigned short dur, bool force);

firmware/target/arm/s5l8702/ipod6g/piezo-6g.c

@@ -81,7 +81,7 @@ void piezo_init(void)
     piezo_stop();
 }
 
-void piezo_button_beep(bool beep, bool force)
+void piezo_button_beep(unsigned short hz, unsigned short dur, bool force)
 {
     if (force)
         while (beeping)
@@ -89,10 +89,9 @@ void piezo_button_beep(bool beep, bool force)
 
     if (!beeping)
     {
-        if (beep)
-            piezo_start(22, 457);
-        else
-            piezo_start(40, 4);
+        /* Cycle count estimated for durations up to 2048ms
+           and with frequencies in 4hz increments           */
+        piezo_start(50000/hz, (dur << 5) / ((7999 / (hz >> 2)) + 1));
     }
 }
 

firmware/target/arm/s5l8702/ipod6g/piezo.h

@@ -25,7 +25,7 @@ void piezo_init(void);
 void piezo_stop(void);
 void piezo_clear(void);
 bool piezo_busy(void);
-void piezo_button_beep(bool beep, bool force);
+void piezo_button_beep(unsigned short hz, unsigned short dur, bool force);
 
 #ifdef BOOTLOADER
 #include <inttypes.h>