Newhaven LCD

The NHD-320240WG model listed here.

Wiring

Pin Name	LCD Pin #	mbed Pin #
Ground	1	Gnd
+5 V	2	Vu
Op. Enable	4	p5
RW select	5	p6
Reg. select	6	p7
Data bus	7-14	p8 - p15
Chip select	15	p16
Reset	16	p17
Frame Ground	18	Gnd
Backlight Power	p19	Vu
Backlight Ground	p20	Gnd

Sample Code

Code

#include "mbed.h"
#include "newhaven.h"

BusInOut  MyBus(p8,p9,p10,p11,p12,p13,p14,p15);
NHLCD   MyLCD(p5,p6,p7,p16,p17,&MyBus);

int main() {
    int i;
    MyLCD.Init();
    MyLCD.clearScreen();
    wait(.5);
    while(1)
    {
        MyLCD.text("Hello World!", 10, 1);
        wait(1);
        for(i = 0; i < 20; i++){
            MyLCD.setPixel(i,i);
        }
        wait(1);
        MyLCD.clearScreen();
        wait(1);
    }
}

/media/uploads/pbevans89/nhd1.png

Functions

NHLCD(PinName PIN_E,PinName PIN_RW,PinName PIN_A0,PinName PIN_CS,PinName PIN_RST, BusInOut *BUSLCD)
- Creates an NHLCD object, specifying the control and bus pins

void Init()
- Initializes the LCD. Sets the text mode to a 40x30 array. In drawing mode each address byte consists of 8 pixels.

void comm_out(unsigned char j)
- Outputs an 8-bit command to the LCD.

void data_out(unsigned char j)
- Outputs 8-bit data to the LCD.

void clearScreen()
- Clears both the text screen and drawing screen.

void text(char* text, char row, char col)
- Writes a string of text at a particular row and column. Each character is 8x8 pixels. Row and column refer to the 40x30 grid of the text screen.

void setPixel(int row, int col, int color)
- Sets a pixel either on (color=1) or off (color=0). Row and column refer to the 320x240 grid of the drawing screen.

void drawLine(int r1, int c1, int r2, int c2, int color)
- draws a line between two coordinates on the drawing screen.

void fillRect(int row, int col, int width, int height, int color)
- fills in a rectangle on the drawing screen.

Program

» Import this program Newhaven_LCD

Newhaven 320x240 LCD

The above program includes a sample Pong demonstration:

/media/uploads/pbevans89/a.jpg

Newhaven LCD

Wiring

Sample Code

Code

Functions

Program

» Import this programNewhaven_LCD

» Import this program Newhaven_LCD