/*-------------------------------------------------------------------
**
**  Soluciones del examen de Programación de Sistemas y Dispositivos
**  Curso 2018-19, Primera Convocatoria, 16 de enero de 2019
**
**-----------------------------------------------------------------*/

/*-------------------------------------------------------------------
**    Ejercicio 1
**-----------------------------------------------------------------*/

#include <s3c44b0x.h>
#include <common_types.h>
#include <system.h>
#include <timers.h>
#include <uda1341ts.h>
#include <iis.h>

void isr_timer0( void ) __attribute__ ((interrupt ("IRQ")));

volatile boolean flag;
volatile int16 ch0, ch1;

void main( void )
{
    sys_init();
    timers_init();
    uda1341ts_init();
    iis_init( IIS_POLLING );

    flag = FALSE;
    timer0_open_tick( isr_timer0, 16000 );
    while( 1 )
        if( flag )
        {
            IISFIF = ch0;
            IISFIF = ch1;
            flag = FALSE;
        }
}

void isr_timer0( void )
{

    ch0 = IISFIF;
    ch1 = IISFIF;
    flag = TRUE;
    I_ISPC = BIT_TIMER0;
}

/*-------------------------------------------------------------------
**    Ejercicio 2
**-----------------------------------------------------------------*/

#include <s3c44b0x.h>
#include <s3cev40.h>
#include <common_types.h>
#include <timers.h>
#include <pbs.h>

uint8 pbs_behavior( uint8 scancode )
{
    while( PDATG & scancode );
       timer3_start_timeout( 10000 );     

       sw_delay_ms( PB_KEYDOWN_DELAY );

    while( !(PDATG & scancode) && !timer3_timeout() );
           if( timer3_timeout() ) return 0;
    sw_delay_ms( PB_KEYUP_DELAY );
    return 1;
}

/*-------------------------------------------------------------------
**    Ejercicio 3
**-----------------------------------------------------------------*/

#include <common_types.h>
#include <lcd.h>

extern uint8 font[];

void lcd_putchar_wider( uint16 x, uint16 y, uint8 color, char ch )
{
    uint8 row, col;
    uint8 *bitmap;

    bitmap = font + ch*16;
    for( row=0; row<16; row++)
        for( col=0; col<16; col++)
            if( bitmap[row] & (0x80 >> col/2) )
                lcd_putpixel( x+col, y+row, color );
            else
                lcd_putpixel( x+col, y+row, WHITE );
}


/*-------------------------------------------------------------------
**    Ejercicio 4
**-----------------------------------------------------------------*/

#include <s3c44b0x.h>
#include <common_types.h>
#include <uart.h>

#define MCLK ((uint32)64000000U)

void uart0_setBaudRate( uint16 baudRate )
{
    UBRDIV0 = ((MCLK >> 4) / baudRate) - 1;     
//     UBRDIV0 = (MCLK / (baudRate << 4)) - 1;     // (MCLK/(baudRate*16)) - 1

}