pad.c

#include <libpad.h>
#include <stdio.h>
#include <tamtypes.h>

#include "pad.h"

static u8 PadArea[2][256] __attribute__((aligned(64)));
static unsigned int old_pad[2] = {0, 0};

void InitPads(void)
{
    padInit(0);
    padPortOpen(0, 0, PadArea[0]);
    padPortOpen(1, 0, PadArea[1]);
}

void DeinitPads(void)
{
    padPortClose(0, 0);
    padPortClose(1, 0);
    padEnd();
}

int ReadPadStatus_raw(int port, int slot)
{
    struct padButtonStatus buttons;
    unsigned int paddata;

    paddata = 0;
    if (padRead(port, slot, &buttons) != 0) {
        paddata = 0xffff ^ buttons.btns;
    }

    return paddata;
}

int ReadCombinedPadStatus_raw(void)
{
    return (ReadPadStatus_raw(0, 0) | ReadPadStatus_raw(1, 0));
}

void WaitPadClear(int port, int slot)
{
    while (ReadPadStatus_raw(port, slot) != 0) {};
}

int ReadPadStatus(int port, int slot)
{
    struct padButtonStatus buttons;
    unsigned int paddata, new_pad;

    new_pad = 0;
    if (padRead(port, slot, &buttons) != 0) {
        paddata       = 0xffff ^ buttons.btns;
        new_pad       = paddata & ~old_pad[port];
        old_pad[port] = paddata;
    }

    return new_pad;
}

int ReadCombinedPadStatus(void)
{
    return (ReadPadStatus(0, 0) | ReadPadStatus(1, 0));
}