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/* *****************************************************************************
* 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);
}
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