File content as of revision 0:acc3c726ffe3:

#include "mbed.h"

#include "Adafruit_32x8matrix.h"

Adafruit_32x8matrix::Adafruit_32x8matrix(I2C *i2c, uint8_t i2c_addr, uint8_t i2c_addr2, uint8_t rotation, uint8_t rotation2, uint8_t brightness) 

    : _i2c(*i2c), _matrix(&_i2c), _matrix2(&_i2c), _i2c_addr(i2c_addr), _i2c_addr2(i2c_addr2), _rotation(rotation), _rotation2(rotation2), _brightness(brightness)  

{
              
    _matrix2.begin(_i2c_addr2);
    _matrix2.setBrightness(_brightness);
    _matrix2.setRotation(_rotation2);
    _matrix2.clear();
    _matrix2.writeDisplay();
        
    _matrix.begin(_i2c_addr);
    _matrix.setBrightness(_brightness);
    _matrix.setRotation(_rotation);                   
    _matrix.clear();
    _matrix.writeDisplay();


}

void Adafruit_32x8matrix::scrollText(char * buffer, uint8_t buf_len, uint8_t speed)
{
    
    
    // code inspired by LOLShield library 
    int xoff=31;// set offset to the right end of the screen - must be signed
    for(int i=0; i< (31 + buf_len*6 +10); i++){ //scrolling loop
         for(int j=0; j<buf_len; j++){ //loop over all of the chars in the text
            if(xoff > 15){
                _matrix2.drawChar(xoff + j*6 - 16, 0, buffer[j], 1, 0, 1);
            }else
            {
                _matrix.drawChar(xoff + j*6, 0, buffer[j], 1, 0, 1);
                _matrix2.drawChar(xoff + j*6 - 16, 0, buffer[j], 1, 0, 1);
            }    
        }
        xoff--; // decrement x offset
                
        _matrix.writeDisplay();
        _matrix2.writeDisplay();
        Thread::wait(1000/speed);
        _matrix.clear();
        _matrix2.clear();
    }    
}    


void Adafruit_32x8matrix::showText(char * buffer, uint8_t buf_len, uint8_t speed)
{
     for(int j=0; j<buf_len; j++){ //loop over all of the chars in the text
        _matrix.drawChar(j*6, 0, buffer[j], 1, 0, 1);
        _matrix2.drawChar(j*6 - 16, 0, buffer[j], 1, 0, 1);
    }
    _matrix.writeDisplay();
    _matrix2.writeDisplay();
    Thread::wait(1000/speed);
    _matrix.clear();
    _matrix2.clear();
 
}