4 Rotary encoders with 5110 LCD display. For Nucleo boards

Dependencies:   N5110 mbed

main.cpp

Committer:
triochi
Date:
2016-10-22
Revision:
5:0daf19d95cc7
Parent:
4:cd50b7dfaf27
Child:
6:920bfbc7a7a1

File content as of revision 5:0daf19d95cc7:

#include "mbed.h"
#include "N5110.h"
#include "REnc.h"


//DigitalOut red(LED1);
//DigitalOut blue(LED2);
//DigitalOut green(LED3);
int i;

//         VCC,SCE, RST, D/C, MOSI,SCLK,LED
N5110 lcd(PB_8,PA_4,PA_0,PA_1,PA_7,PA_5,PB_9);  //PA_4 and PA_6 not used
REnc encoder(PC_3, PC_2);
int temperature = 50;

void CCW_Handle(void)
{
    temperature--;
}
    
void CW_Handle(void)
{
    temperature++;
}
    

int main() {
     // first need to initialise display
        lcd.init();
        encoder.setHandleCCW(CCW_Handle);
        encoder.setHandleCC(CW_Handle);

//    while(1) {
//        for (i=1; i<7; i++) {
//            red = i & 1;
//            blue = i & 2;
//            green = i & 4;
//            wait(0.2);
//        }
//    }
    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 = encoder.getVal();
           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)
           while(1)
           {               
                wait(.5);
               
                length = sprintf(buffer,"T = %2d C",temperature); // print formatted data to buffer
           
                if (length <= 14)  // if string will fit on display
                    lcd.printString(buffer,0,1);           // display on screen
           }
           lcd.clear();

       }
}