/********************************** (C) COPYRIGHT *******************************
 * File Name          : CH58x_pwm.c
 * Author             : WCH
 * Version            : V1.2
 * Date               : 2021/11/17
 * Description
 * Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
 * SPDX-License-Identifier: Apache-2.0
 *******************************************************************************/

#include "CH58x_common.h"

/*********************************************************************
 * @fn      PWMX_CycleCfg
 *
 * @brief   PWM4-PWM11基准时钟配置
 *
 * @param   cyc     - refer to PWMX_CycleTypeDef
 *
 * @return  none
 */
void PWMX_CycleCfg(PWMX_CycleTypeDef cyc)
{
    switch(cyc)
    {
        case PWMX_Cycle_256:
            R8_PWM_CONFIG = R8_PWM_CONFIG & 0xf0;
            break;

        case PWMX_Cycle_255:
            R8_PWM_CONFIG = (R8_PWM_CONFIG & 0xf0) | 0x01;
            break;

        case PWMX_Cycle_128:
            R8_PWM_CONFIG = (R8_PWM_CONFIG & 0xf0) | (1 << 2);
            break;

        case PWMX_Cycle_127:
            R8_PWM_CONFIG = (R8_PWM_CONFIG & 0xf0) | (1 << 2) | 0x01;
            break;

        case PWMX_Cycle_64:
            R8_PWM_CONFIG = (R8_PWM_CONFIG & 0xf0) | (2 << 2);
            break;

        case PWMX_Cycle_63:
            R8_PWM_CONFIG = (R8_PWM_CONFIG & 0xf0) | (2 << 2) | 0x01;
            break;

        case PWMX_Cycle_32:
            R8_PWM_CONFIG = (R8_PWM_CONFIG & 0xf0) | (3 << 2);
            break;

        case PWMX_Cycle_31:
            R8_PWM_CONFIG = (R8_PWM_CONFIG & 0xf0) | (3 << 2) | 0x01;
            break;

        default:
            break;
    }
}

/*********************************************************************
 * @fn      PWMX_ACTOUT
 *
 * @brief   PWM4-PWM11通道输出波形配置
 *
 * @param   ch      - select channel of pwm, refer to channel of PWM define
 * @param   da      - effective pulse width
 * @param   pr      - select wave polar, refer to PWMX_PolarTypeDef
 * @param   s       - control pwmx function, ENABLE or DISABLE
 *
 * @return  none
 */
void PWMX_ACTOUT(uint8_t ch, uint8_t da, PWMX_PolarTypeDef pr, FunctionalState s)
{
    uint8_t i;

    if(s == DISABLE)
    {
        R8_PWM_OUT_EN &= ~(ch);
    }
    else
    {
        (pr) ? (R8_PWM_POLAR |= (ch)) : (R8_PWM_POLAR &= ~(ch));
        for(i = 0; i < 8; i++)
        {
            if((ch >> i) & 1)
            {
                *((volatile uint8_t *)((&R8_PWM4_DATA) + i)) = da;
            }
        }
        R8_PWM_OUT_EN |= (ch);
    }
}

/*********************************************************************
 * @fn      PWMX_AlterOutCfg
 *
 * @brief   PWM 交替输出模式配置
 *
 * @param   ch      - select group of PWM alternate output
 *                    RB_PWM4_5_STAG_EN     -  PWM4 和 PWM5 通道交替输出
 *                    RB_PWM6_7_STAG_EN     -  PWM6 和 PWM7 通道交替输出
 *                    RB_PWM8_9_STAG_EN     -  PWM8 和 PWM9 通道交替输出
 *                    RB_PWM10_11_STAG_EN   -  PWM10 和 PWM11 通道交替输出
 * @param   s       - control pwmx function, ENABLE or DISABLE
 *
 * @return  none
 */
void PWMX_AlterOutCfg(uint8_t ch, FunctionalState s)
{
    if(s == DISABLE)
    {
        R8_PWM_CONFIG &= ~(ch);
    }
    else
    {
        R8_PWM_CONFIG |= (ch);
    }
}