Diff: main.cpp

Revision:

0:1be8870a132e

Child:

1:621d776b1313

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sat Jan 14 22:38:52 2017 +0000
@@ -0,0 +1,98 @@
+/*
+ * Nokia 5110 LCD demo
+ */
+#include "stm32f103c8t6.h"
+#include "mbed.h"
+#include "N5110.h"
+ 
+N5110 lcd(PA_9, PA_11, PA_12, PA_15, PB_5, PB_3, PA_10);    // VCC, CE, RST, DC, DIN, CLK, LIGHT
+
+int main()
+{
+    confSysClock();     // configure system clock (72MHz HSE clock, 48MHz USB clock)   
+    lcd.init();         // first need to initialise display
+ 
+    while(1) {
+ 
+        // these are default settings so not strictly needed
+        lcd.normalMode();      // normal colour mode
+        lcd.setBrightness(0.5); // put LED backlight on 50%
+ 
+        // can directly print strings at specified co-ordinates
+        lcd.printString("Hello, World!",0,0);
+ 
+        char buffer[14];  // each character is 6 pixels wide, screen is 84 pixels (84/6 = 14)
+        // so can display a string of a maximum 14 characters in length
+        // or create formatted strings - ensure they aren't more than 14 characters long
+        int temperature = 27;
+        int length = sprintf(buffer,"T = %2d C",temperature); // print formatted data to buffer
+        // it is important the format specifier ensures the length will fit in the buffer
+        if (length <= 14)  // if string will fit on display
+            lcd.printString(buffer,0,1);           // display on screen
+ 
+        float pressure = 1012.3;  // same idea with floats
+        length = sprintf(buffer,"P = %.2f mb",pressure);
+        if (length <= 14)
+            lcd.printString(buffer,0,2);
+ 
+        // can also print individual characters at specified place
+        lcd.printChar('X',5,3);
+ 
+        // draw a line across the display at y = 40 pixels (origin top-left)
+        for (int i = 0; i < WIDTH; i++) {
+            lcd.setPixel(i,40);
+        }
+        // need to refresh display after setting pixels
+        lcd.refresh();
+ 
+        // can also check status of pixels using getPixel(x,y)
+ 
+        wait(5.0);
+        lcd.clear();            // clear display
+        lcd.inverseMode();      // invert colours
+        lcd.setBrightness(1.0); // put LED backlight on full
+ 
+        float array[84];
+ 
+        for (int i = 0; i < 84; i++) {
+            array[i] = 0.5 + 0.5*sin(i*2*3.14/84);
+        }
+ 
+        // can also plot graphs - 84 elements only
+        // values must be in range 0.0 - 1.0
+        lcd.plotArray(array);
+        wait(5.0);
+        lcd.clear();
+        lcd.normalMode();      // normal colour mode back
+        lcd.setBrightness(0.5); // put LED backlight on 50%
+ 
+        // example of drawing lines
+        for (int x = 0; x < WIDTH ; x+=10) {
+            // x0,y0,x1,y1,type 0-white,1-black,2-dotted
+            lcd.drawLine(0,0,x,HEIGHT,2);
+        }
+        lcd.refresh();   // need to refresh screen after drawing lines
+ 
+        wait(5.0);
+        lcd.clear();
+ 
+        // example of how to draw circles
+        lcd.drawCircle(WIDTH/2,HEIGHT/2,20,1);  // x,y,radius,black fill
+        lcd.drawCircle(WIDTH/2,HEIGHT/2,10,2);  // x,y,radius,white fill
+        lcd.drawCircle(WIDTH/2,HEIGHT/2,30,0);  // x,y,radius,transparent with outline
+        lcd.refresh();   // need to refresh screen after drawing circles
+ 
+        wait(5.0);
+        lcd.clear();
+ 
+        // example of how to draw rectangles
+        //          origin x,y,width,height,type
+        lcd.drawRect(10,10,50,30,1);  // filled black rectangle
+        lcd.drawRect(15,15,20,10,2);  // filled white rectange (no outline)
+        lcd.drawRect(2,2,70,40,0);    // transparent, just outline
+        lcd.refresh();   // need to refresh screen after drawing rects
+  
+        wait(5.0);
+        lcd.clear();
+    }
+}