/******************************************************************************
 * Copyright (c) 2022 Telink Semiconductor (Shanghai) Co., Ltd. ("TELINK")
 * All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 *****************************************************************************/
#include "timer.h"
/**********************************************************************************************************************
 *                                         global function implementation                                             *
 *********************************************************************************************************************/

/**
 * @brief     the specifed timer start working.
 * @param[in] type - select the timer to start.
 * @return    none
 */
void timer_start(timer_type_e type)
{
    switch (type) {
        case TIMER0:
            reg_tmr_ctrl0 |= FLD_TMR0_EN;
            break;
        case TIMER1:
            reg_tmr_ctrl0 |= FLD_TMR1_EN;
            break;
        default:
            break;
    }
}

/**
 * @brief     the specifed timer stop working.
 * @param[in] type - select the timer to stop.
 * @return    none
 */
void timer_stop(timer_type_e type)
{
    switch (type) {
        case TIMER0:
            reg_tmr_ctrl0 &= (~FLD_TMR0_EN);
            break;
        case TIMER1:
            reg_tmr_ctrl0 &= (~FLD_TMR1_EN);
            break;
        default:
            break;
    }
}

/**
 * @brief     set mode, initial tick and capture of timer.
 * @param[in] type - select the timer to start.
 * @param[in] mode - select mode for timer.
 * @param[in] init_tick - initial tick.
 * @param[in] cap_tick  - tick of capture.
 * @return    none
 */
void timer_set_mode(timer_type_e type, timer_mode_e mode)
{
    switch (type) {
        case TIMER0:
            reg_tmr_sta = FLD_TMR_STA_TMR0;  // clear irq status
            reg_tmr_ctrl0 &= (~FLD_TMR0_MODE);
            reg_tmr_ctrl0 |= mode;
            break;
        case TIMER1:
            reg_tmr_sta = FLD_TMR_STA_TMR1;  // clear irq status
            reg_tmr_ctrl0 &= (~FLD_TMR1_MODE);
            reg_tmr_ctrl0 |= (mode << 4);
            break;
        default:
            break;
    }
}

/**
 * @brief     initiate GPIO for gpio trigger and gpio width mode of timer.
 * @param[in] type - select the timer to start.
 * @param[in] pin - select pin for timer.
 * @param[in] pol - select polarity for gpio trigger and gpio width
 * @return    none
 */
void timer_gpio_init(timer_type_e type, gpio_pin_e pin, gpio_pol_e pol)
{
    gpio_function_en(pin);
    gpio_output_dis(pin);  // disable output
    gpio_input_en(pin);    // enable input
    switch (type) {
        case TIMER0:
            if (pol == POL_FALLING) {
                gpio_set_up_down_res(pin, GPIO_PIN_PULLUP_10K);
                gpio_set_gpio2risc0_irq(pin, INTR_LOW_LEVEL);
                gpio_gpio2risc0_irq_en(pin);
            } else if (pol == POL_RISING) {
                gpio_set_up_down_res(pin, GPIO_PIN_PULLDOWN_100K);
                gpio_set_gpio2risc0_irq(pin, INTR_HIGH_LEVEL);
                gpio_gpio2risc0_irq_en(pin);
            }
            break;

        case TIMER1:
            if (pol == POL_FALLING) {
                gpio_set_up_down_res(pin, GPIO_PIN_PULLUP_10K);
                gpio_set_gpio2risc1_irq(pin, INTR_LOW_LEVEL);
                gpio_gpio2risc1_irq_en(pin);
            } else if (pol == POL_RISING) {
                gpio_set_up_down_res(pin, GPIO_PIN_PULLDOWN_100K);
                gpio_set_gpio2risc1_irq(pin, INTR_HIGH_LEVEL);
                gpio_gpio2risc1_irq_en(pin);
            }
            break;

        default:
            break;
    }
}