main.cpp

00001 // example to test out OLED on mbed + XPresso baseboard, sford
00002 
00003 #include "mbed.h"
00004 #include "EAOLED.h"
00005 
00006 // NOTE: The xpresso board does not provide the data/command signal to the mbed, so I added a wire:
00007 // Connect:
00008 //  PIO2_7 of baseboard mbed socket (empty 2nd hole below mbed pin 21)
00009 // to
00010 //   PIO0_8(p13) of J6 (7th hole down on left side of J6)
00011 // to provide OLED data/command signal
00012 
00013 DigitalOut led(LED1);
00014 
00015 EAOLED oled(p5, p6, p7, p8, p25); // mosi, dnc, sclk, cs, power
00016 BusIn js(p13, p14, p22, p23); // down, right, left, up
00017 DigitalIn push (p12);
00018 
00019 int Cur_X = 48;
00020 int Cur_Y = 32;
00021 int Cur_Colour = 0xffffff; // white
00022 
00023 void plot (int);
00024 
00025 int main() {
00026 
00027     oled.cls();
00028     oled.printf("Hello World!");
00029     oled.locate(0,3);
00030     oled.printf("I'm an OLED!");
00031     wait(1);
00032     oled.cls();
00033 
00034     oled.pixel(Cur_X,Cur_Y,Cur_Colour);
00035 
00036     while (1) {        
00037         plot(js);
00038         wait (0.1);
00039     }
00040 }
00041 
00042 
00043 void plot (int dir) {
00044 
00045         // clear the screen
00046         if (push == 0) {
00047             oled.cls();
00048         }
00049         
00050         // if possible, move down
00051         else if (js == 0x7){ 
00052             if ( Cur_Y > 0) {
00053                 Cur_Y--;
00054                 oled.pixel(Cur_X,Cur_Y,Cur_Colour);
00055             }
00056         }
00057 
00058         // if possible, move right
00059         else if (js == 0xb){ 
00060             if (Cur_X > 0) {
00061                 Cur_X--;
00062                 oled.pixel(Cur_X,Cur_Y,Cur_Colour);
00063             }
00064         }
00065 
00066         // if possible, move left
00067         else if (js == 0xd){ 
00068             if (Cur_X < 96) {
00069                 Cur_X++;
00070                 oled.pixel(Cur_X,Cur_Y,Cur_Colour);
00071             }
00072         }
00073         
00074         // if possible, move up
00075         else if (js == 0xe){ 
00076             if (Cur_Y < 64) {
00077                 Cur_Y++;
00078                 oled.pixel(Cur_X,Cur_Y,Cur_Colour);
00079             }
00080         }
00081 }