Library for interfacing to Nokia 5110 LCD display (as found on the SparkFun website).

Dependents:   LV7_LCDtest LV7_Grupa5_Tim003_Zadatak1 lv7_Grupa5_Tim008_zad1 LV7_PAI_Grupa5_tim10_Zadatak1 ... more

This library is designed to make it easy to interface an mbed with a Nokia 5110 LCD display.

These can be found at Sparkfun (https://www.sparkfun.com/products/10168) and Adafruit (http://www.adafruit.com/product/338).

The library uses the SPI peripheral on the mbed which means it is much faster sending data to the display than other libraries available on other platforms that use software SPI.

The library can print strings as well as controlling individual pixels, meaning that both text and primitive graphics can be displayed.

Revision:
13:908644099648
Parent:
10:6f3abb40202b
Child:
15:ee645611ff94
--- a/N5110.cpp	Wed Sep 17 11:35:50 2014 +0000
+++ b/N5110.cpp	Tue Mar 10 19:18:20 2015 +0000
@@ -10,10 +10,10 @@
 
 N5110::N5110(PinName pwrPin, PinName scePin, PinName rstPin, PinName dcPin, PinName mosiPin, PinName sclkPin, PinName ledPin)
 {
-    
+
     spi = new SPI(mosiPin,NC,sclkPin); // create new SPI instance and initialise
-    initSPI();    
-    
+    initSPI();
+
     // set up pins as required
     led = new PwmOut(ledPin);
     pwr = new DigitalOut(pwrPin);
@@ -47,16 +47,18 @@
     clearRAM();
 
 }
- 
-// sets normal video mode (black on white) 
-void N5110::normalMode() {
-     sendCommand(CMD_DC_NORMAL_MODE);  
-   
+
+// sets normal video mode (black on white)
+void N5110::normalMode()
+{
+    sendCommand(CMD_DC_NORMAL_MODE);
+
 }
 
-// sets normal video mode (white on black) 
-void N5110::inverseMode() {
-    sendCommand(CMD_DC_INVERT_VIDEO); 
+// sets normal video mode (white on black)
+void N5110::inverseMode()
+{
+    sendCommand(CMD_DC_INVERT_VIDEO);
 }
 
 // function to power up the LCD and backlight
@@ -144,7 +146,7 @@
 
 }
 
-// function to set the XY address in RAM for subsequenct data write 
+// function to set the XY address in RAM for subsequenct data write
 void N5110::setXYAddress(int x, int y)
 {
     // check whether address is in range
@@ -187,11 +189,11 @@
 void N5110::refresh()
 {
     int i,j;
-    
+
     setXYAddress(0,0);  // important to set address back to 0,0 before refreshing display
     // address auto increments after printing string, so buffer[0][0] will not coincide
     // with top-left pixel after priting string
-    
+
     sce->write(0);  //set CE low to begin frame
 
     for(j = 0; j < 6; j++) {  // be careful to use correct order (j,i) for horizontal addressing
@@ -217,17 +219,14 @@
 }
 
 // function to print 5x7 font
-void N5110::printChar(char c)
+void N5110::printChar(char c,int x,int y)
 {
-    int i;
-    // loop through 5 columns
-    for (i = 0; i < 5 ; i++ ) {
-        sendData(font5x7[(c - 32)*5 + i]);
-        // array is offset by 32 relative to ASCII, each character is 5 pixels wide
-        // the X address is automatically incremented after each data write
+    for (int i = 0; i < 5 ; i++ ) {
+        buffer[x+i][y] = font5x7[(c - 32)*5 + i];
+         // array is offset by 32 relative to ASCII, each character is 5 pixels wide
     }
-    sendData(0); // send an empty byte to introduce space between characters
-
+    
+     refresh();  // this sends the buffer to the display and sets address (cursor) back to 0,0
 }
 
 // function to print string at specified position
@@ -237,20 +236,16 @@
     // loop through string and print character
     while(*str) {
 
-        // This is the old version - strings are printed using the printChar function
-        //setXYAddress(x+6*n,y);  // leave 1 pixel (6 = 5 + 1) between each character
-        //printChar(*str);   // print the char - can probably do *str++ and remove next line
-        
-        // the new version writes the character bitmap data to the buffer, so that
+        // writes the character bitmap data to the buffer, so that
         // text and pixels can be displayed at the same time
         for (int i = 0; i < 5 ; i++ ) {
             buffer[x+i+n*6][y] = font5x7[(*str - 32)*5 + i];
         }
-        
+
         str++;  // go to next character in string
         n++;    // increment index
     }
-    
+
     refresh();  // this sends the buffer to the display and sets address (cursor) back to 0,0
 
 }
@@ -274,18 +269,19 @@
 }
 
 // function to plot array on display
-void N5110::plotArray(float array[]) {
-    
+void N5110::plotArray(float array[])
+{
+
     int i;
-    
+
     for (i=0; i<84; i++) {  // loop through array
         // elements are normalised from 0.0 to 1.0, so multiply
         // by 47 to convert to pixel range, and subtract from 47
         // since top-left is 0,0 in the display geometry
         setPixel(i,47 - int(array[i]*47.0));
-    }    
-    
+    }
+
     refresh();
-    
-    
+
+
 }
\ No newline at end of file