Revision 10:6f3abb40202b, committed 2014-07-16

Comitter:

eencae

Date:

Wed Jul 16 08:42:27 2014 +0000

Parent:

9:7701f0126ba7

Child:

11:fc7d89b33e4c

Commit message:

Added example code to show how to use sprintf() to print data variables on the display.

Changed in this revision

--- a/N5110.cpp	Tue May 20 19:43:52 2014 +0000
+++ b/N5110.cpp	Wed Jul 16 08:42:27 2014 +0000
@@ -72,7 +72,7 @@
 {
     setBrightness(0.0);  // turn backlight off
     clearRAM();   // clear RAM to ensure specified current consumption
-    // send command to ensure we are in basic model
+    // send command to ensure we are in basic mode
     sendCommand(0x20 | CMD_FS_ACTIVE_MODE | CMD_FS_HORIZONTAL_MODE | CMD_FS_BASIC_MODE);
     // clear the display
     sendCommand(CMD_DC_CLEAR_DISPLAY);

--- a/N5110.h	Tue May 20 19:43:52 2014 +0000
+++ b/N5110.h	Wed Jul 16 08:42:27 2014 +0000
@@ -66,7 +66,27 @@
   lcd.setXYAddress(0,3);
   // print character
   lcd.printChar('X');
-    
+  
+  // data to be printed on display
+  int temperature = 27; 
+  // print formatted data to buffer
+  char buffer[14];  // each character is 6 pixels, screen is 84 pixels (84/6 = 14) 
+  int length = sprintf(buffer,"Temperatu = %2d",temperature); 
+  // it is important the format specifier ensures the string will fit in the buffer
+  // if string will fit on display
+  if (length <= 14)  
+    lcd.printString(buffer,0,4);       // display on screen
+  else
+    lcd.printString("Too long",0,4);  // else print error message
+
+  // same idea with floats
+  float humidity = 9.45;  
+  length = sprintf(buffer,"Humidit = %4.2f",humidity);
+  if (length <= 14)
+    lcd.printString(buffer,0,2);
+  else
+    lcd.printString("Too long",0,2);
+        
   while(1);
  }