Eco Display: Lower LCD freq at night(19h-08h), lowers current consumption

driver/display.c

@@ -610,3 +610,23 @@ void display_all_off(void)
 		lcdptr++;
 	}
 }
+
+#ifdef ECO_DISPLAY
+// *************************************************************************************************
+// @fn          eco_display
+// @brief       Lowers the display frequency at night(19h-08h)
+// @param       none
+// @return      none
+// *************************************************************************************************
+void eco_display(void)
+{
+	if((sTime.hour>8)&&(sTime.hour<19))
+	{
+	    LCDBCTL0 = (LCDDIV0 + LCDDIV1 + LCDDIV2) | (LCDPRE0 + LCDPRE1) | LCD4MUX | LCDON; //day mode 512Hz
+	}
+	else
+	{
+	    LCDBCTL0 = (LCDDIV0 + LCDDIV1 + LCDDIV2 + LCDDIV3) | (LCDPRE0 + LCDPRE1) | LCD4MUX | LCDON; //night mode, freq. from the original ti frimware 256Hz
+	}
+}
+#endif

driver/display.h

@@ -370,5 +370,7 @@ extern u8 * itoa(u32 n, u8 digits, u8 blanks);
 extern u8 switch_seg(u8 line, u8 index1, u8 index2);
 
 void display_all_off(void);
-
+#ifdef ECO_DISPLAY 
+void eco_display(void); //ECO display
+#endif
 #endif // __DISPLAY_

driver/timer.c

@@ -365,6 +365,16 @@ __interrupt void TIMER0_A0_ISR(void)
 		return;
 	}
 
+	// -------------------------------------------------------------------
+	// Service modules that require 1/hour processing
+	if (sTime.drawFlag > 2) 
+	{
+		#ifdef ECO_DISPLAY	
+		request.flag.eco_display = 1; //ECO_display flag
+		#endif
+	}	
+
+
 	// -------------------------------------------------------------------
 	// Service modules that require 1/min processing
 	if (sTime.drawFlag >= 2) 

ezchronos.c

@@ -567,6 +567,10 @@ void wakeup_event(void)
 // *************************************************************************************************
 void process_requests(void)
 {
+#ifdef ECO_DISPLAY
+	// Change display freq when needed
+	if (request.flag.eco_display) eco_display();
+#endif	
 	// Do temperature measurement
 	if (request.flag.temperature_measurement) temperature_measurement(FILTER_ON);
 

include/project.h

@@ -127,6 +127,9 @@ typedef union
 #endif
 #ifdef CONFIG_STRENGTH
     u16 strength_buzzer 		: 1;    // 1 = Output buzzer from strength_data
+#endif
+#ifdef ECO_DISPLAY
+    u16 eco_display			: 1;	// 1 = LCD refresh freq is lower at night
 #endif
   } flag;
   u16 all_flags;            // Shortcut to all display flags (for reset)

tools/config.py

@@ -230,7 +230,13 @@ def rand_hw():
         "name": "Use PPT",
         "depends": [],
         "default": True}
-
+
+	###IMPLEMENTED by Dobfek 2011-09-04
+DATA["ECO_DISPLAY"] = {
+	"name": "Economical display. Lower display frequency and -30% current consumption at night.",
+	"depends": [],
+	"default": False}
+
 DATA["CONFIG_USE_SYNC_TOSET_TIME"] = {
 	"name": "Sync is the only way to set clocks data/time",
 	"depends": [],