[foxboard] Graphic display 24bit for pixel

[f_lamme]

Hello
I have an Graphic display 24bit for pixel and i want use this with the
foxboard.
I have connected the display to the portG, but I have a problem with
the communication.
At the moment I use these functions to send a byte:
void lcd_put_byte(char value, char clk)
{
        if (value&0x01)
                gpiosetbits(PORTG, PG8);
        else 
                gpioclearbits(PORTG, PG8);
        if (value&0x02) 
                gpiosetbits(PORTG, PG9);
        else 
                gpioclearbits(PORTG, PG9);
        if (value&0x04) 
                gpiosetbits(PORTG, PG10);
        else 
                gpioclearbits(PORTG, PG10);
        if (value&0x08) 
                gpiosetbits(PORTG, PG11);
        else 
                gpioclearbits(PORTG, PG11);
        if (value&0x10) 
                gpiosetbits(PORTG, PG12);
        else 
                gpioclearbits(PORTG, PG12);
        if (value&0x20) 
                gpiosetbits(PORTG, PG13);
        else 
                gpioclearbits(PORTG, PG13);
        if (value&0x40) 
                gpiosetbits(PORTG, PG14);
        else 
                gpioclearbits(PORTG, PG14);
        if (value&0x80) 
                gpiosetbits(PORTG, PG15);
        else 
                gpioclearbits(PORTG, PG15);
        // cs e clk
        gpioclearbits(PORTG, PG1);
        gpiosetbits(PORTG, PG3);
        gpioclearbits(PORTG, PG3);
        if (clk==1)
        {
                gpiosetbits(PORTG, PG3);
                gpioclearbits(PORTG, PG3);
        }       
        gpiosetbits(PORTG, PG1);
        
}
the problem and the slowness with which the byte is sent because the
byte is sent bit per bit.
Does a way exist to send a whole byte?
I excuse but I do not speak English very well