/* *****************************************************************************
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 *  Created: 12/18/09 02:41:24
 *  Copyright (c) 2009 Perry L. Hung. All rights reserved.
 *
 * ****************************************************************************/

/**
 *  @file pwm.c
 *
 *  @brief 
 */

#include "wiring.h"
#include "timers.h"
#include "gpio.h"
#include "pwm.h"

#define NOT_A_TIMER 0

static const TimerCCR PIN_TO_TIMER[NR_MAPLE_PINS] = {
    TIMER2_CH4_CCR,                     // D0/A6
    TIMER2_CH3_CCR,                     // D1/A7
    TIMER2_CH1_CCR,                     // D2/A8
    TIMER2_CH2_CCR,                     // D3/A9
    NOT_A_TIMER,                        // D4
    TIMER4_CH1_CCR,                     // D5
    TIMER1_CH1_CCR,                     // D6
    TIMER1_CH2_CCR,                     // D7
    TIMER1_CH3_CCR,                     // D8
    TIMER4_CH2_CCR,                     // D9
    NOT_A_TIMER,                        // D10/A10
    TIMER3_CH2_CCR,                     // D11/A11
    TIMER3_CH1_CCR,                     // D12/A12
    NOT_A_TIMER,                        // D13/A13
};

void pwmWrite(uint8_t pin, uint16_t duty_cycle) {
    TimerCCR ccr;

    if (pin >= NR_MAPLE_PINS) {
        return;
    }

    ccr = PIN_TO_TIMER[pin];

    if (ccr == NOT_A_TIMER)
        return;

    timer_pwm_write_ccr(ccr, duty_cycle);
}