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//
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//
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//    Copyright 2010 TheSeven
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//
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//
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//    This file is part of emCORE.
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//
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//    emCORE is free software: you can redistribute it and/or
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//    modify it under the terms of the GNU General Public License as
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//    published by the Free Software Foundation, either version 2 of the
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//    License, or (at your option) any later version.
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//
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//    emCORE is distributed in the hope that it will be useful,
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//    but WITHOUT ANY WARRANTY; without even the implied warranty of
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//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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//    See the GNU General Public License for more details.
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//
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//    You should have received a copy of the GNU General Public License along
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//    with emCORE.  If not, see <http://www.gnu.org/licenses/>.
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//
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//
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#include "global.h"
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#include "timer.h"
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#include "thread.h"
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#include "s5l8720.h"
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void timer_init()
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{
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    TACMD = (1 << 1);   /* TA_CLR */
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    TBCMD = (1 << 1);   /* TB_CLR */
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    TCCMD = (1 << 1);   /* TC_CLR */
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    TDCMD = (1 << 1);   /* TD_CLR */
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    TFCMD = (1 << 1);   /* TF_CLR */
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    TGCMD = (1 << 1);   /* TG_CLR */
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    THCMD = (1 << 1);   /* TH_CLR */
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}
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void timer_schedule_wakeup(uint32_t usecs)
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{
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    if (usecs > 16146247)
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    {
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        TBPRE = 511;
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        TBDATA1 = 65535;
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    }
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    else if (usecs > 31535)
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    {
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        TBPRE = 511;
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        TBDATA1 = (usecs * 133) >> 15;
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    }
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    else
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    {
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        TBPRE = 0;
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        TBDATA1 = (usecs * 133) >> 6;
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    }
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    TBCON = (1 << 13) | /* TB_INT1_EN */
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            (0 << 12) | /* TB_INT0_EN */
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            (0 << 11) | /* TB_START */
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            (3 << 8) |  /* TB_CS = PCLK / 64 */
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            (2 << 4);   /* TB_MODE_SEL = one-shot mode */
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    TBCMD = (1 << 1);   /* TB_CLR */
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    TBCMD = (1 << 0);   /* TB_EN */
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}
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void timer_kill_wakeup()
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{
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    TBCMD = (1 << 1);   /* TB_CLR */
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    TBCON = TBCON;
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}
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void INT_TIMERB(void)
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{
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    TBCON = TBCON;
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    scheduler_switch(NULL, NULL);
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}