Daniel Worrall / dispBoB

6 x 7 segment display library for PCA9637 driven breakout board

Dependents:   FTSE100 InternetDispBoB digitalThermometer Counter ... more

dispBoB.cpp

Committer:
d_worrall
Date:
2011-07-01
Revision:
11:5e97be74f4d1
Parent:
10:1fda6b0ee3bc
Child:
12:2235c72db927

File content as of revision 11:5e97be74f4d1:

//NXP PCA9635 library
//mbed Team     -   28th June 2011
//Daniel Worrall

#include "mbed.h"
#include "PCA9635.h"
#include "dispBoB.h"

    static const char loc[] = {0x02, 0x02, 0x04, 0x04, 0x10, 0x10, 0x12, 0x12}; 
    static const short dispL[] = {
    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
    0x0000, 0x1008, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0002, 0xC006, 0x600C, 0x0000, 0x0000, 0x0000, 0x0000, 0x1000, 0x0000,
    0xE00E, 0x2008, 0xC00D, 0x600D, 0x200B, 0x6007, 0xE007, 0x200E, 0xE00F, 0x600F, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
    
    0x0000, 0xF001, 0xE003, 0xC001, 0xE009, 0xC007, 0x8007, 0x600F, 0xA003, 0x8000, 0x6008, 0xA007, 0x3008, 0xA005, 0xA001, 0xE001,
    0x800F, 0x300F, 0x8001, 0x6007, 0xC003, 0xE000, 0xE000, 0xE004, 0xA00B, 0x600B, 0xC00D, 0xC006, 0x0000, 0x600C, 0x0000, 0x4000,
    0x1000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0xC006, 0x0000, 0x600C, 0x0000, 0x0000
    };
    static const short dispR[] = {
    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
    0x0000, 0x0180, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0020, 0x0C60, 0x06C0, 0x0000, 0x0000, 0x0000, 0x0000, 0x0100, 0x0000,
    0x0EE0, 0x0280, 0x0CD0, 0x06D0, 0x02B0, 0x0670, 0x0E70, 0x02E0, 0x0EF0, 0x06F0, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
    
    0x0000, 0x0F10, 0x0E30, 0x0C10, 0x0E90, 0x0C70, 0x0870, 0x06F0, 0x0A30, 0x0800, 0x0680, 0x0A70, 0x0380, 0x0A50, 0x0A10, 0x0E10,
    0x08F0, 0x03F0, 0x0810, 0x0670, 0x0C30, 0x0E00, 0x0E00, 0x0E40, 0x0AB0, 0x06B0, 0x0CD0, 0x0C60, 0x0000, 0x06C0, 0x0000, 0x0400,
    0x0100, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0C60, 0x0000, 0x06C0, 0x0000, 0x0000
    };
    short element[8];
    short ppair[4];
    string nullArray = "      ";

dispBoB::dispBoB(PinName sda, PinName scl, PinName en): _pca(sda, scl), _en(en) {
    _en = 0;
    _pca.init(loc[0]);
}

void dispBoB::cls(void){
    for(int j = 0; j < 8; j++){
        locate(j);
        _pca.bus(0x0000);
    }
    locate(0);
}

void dispBoB::locate(char pos){
    _pca.setAddress(loc[pos]);
    _cursor = pos;
    _pos = pos;
}

int dispBoB::_putc(int c){
    if(_pos>5) return -1;
    
    if(_cursor & 1){
        element[_cursor] = dispR[toupper(c)];
    } else {
        element[_cursor] = dispL[toupper(c)];
    }
    
    int i = _cursor/2;
    ppair[i] = element[(2*i)] + element[(2*i)+1];
    _pca.bus(ppair[i]); 
    
    locate(_pos+1);
    
    return c;
}

int dispBoB::_getc(){
    return -1;
}

void dispBoB::scroll(string str, float speed){
    char buffer[6];
    str.insert(0, nullArray);               
    str.insert(str.length(), nullArray);
    
    for(int k = 0; k < str.length(); k++){
        str.copy(buffer, 6, k);    
        locate(0);         
        printf("%s", buffer);               
        wait(speed);                
    }
}

//supply PCA9635 functionality to dispBoB class
void dispBoB::bus(short leds){
    _pca.bus(leds);
}