#include "cs_types.h"
#define OneWire_hwp_gpio 0x50107000

/**
 * @description: 设置单总线信号线为输入上拉
 * @param :pin{uint8}：要操作的引脚，可选范围0、1、2、3、7
 * @return: TRUE：正确
 *          FALSE：引脚不在允许范围
 */
BOOL OneWire_IO_IN(uint8 pin)
{
    int *cfg = NULL;
    switch (pin)
    {
    case 0:
        cfg = 0x5010C098;
        break;
    case 1:
        cfg = 0x5010C09C;
        break;
    case 2:
        cfg = 0x5010C0A0;
        break;
    case 3:
        cfg = 0x5010C0A4;
        break;
    case 7:
        cfg = 0x5010C0B0;
        break;
    default:
        return FALSE;
    }
    *cfg = *cfg | 0x00010000;
    *cfg = *cfg | 0x00000200;

    int *hwp = NULL;
    hwp = OneWire_hwp_gpio + 4 * 7;
    *hwp = (1 << pin);
    hwp = OneWire_hwp_gpio + 4 * 15;
    *hwp = (1 << pin);
    hwp = OneWire_hwp_gpio + 4 * 17;
    *hwp = (1 << pin);
    hwp = OneWire_hwp_gpio + 4 * 19;
    *hwp = (1 << pin);

    hwp = OneWire_hwp_gpio + 4 * 2;
    *hwp = (1 << pin);
    return TRUE;
}

/**
 * @description: 设置单总线信号线为输出，默认输出高定平
 * @param :pin{uint8}：要操作的引脚，可选范围0、1、2、3、7
 * @return: 无
 */
void OneWire_IO_OUT(uint8 pin)
{
    int *hwp = NULL;
    hwp = OneWire_hwp_gpio + 4 * 7;
    *hwp = (1 << pin);
    hwp = OneWire_hwp_gpio + 4 * 15;
    *hwp = (1 << pin);
    hwp = OneWire_hwp_gpio + 4 * 17;
    *hwp = (1 << pin);
    hwp = OneWire_hwp_gpio + 4 * 19;
    *hwp = (1 << pin);

    hwp = OneWire_hwp_gpio + 4 * 4;
    *hwp = (1 << pin);
    hwp = OneWire_hwp_gpio + 4 * 1;
    *hwp = (1 << pin);
}

/**
 * @description: 单总线输出
 * @param : pin{uint8}：要操作的引脚，可选范围0、1、2、3、7
 *          level{uint8}}：要输出的电平。0或者1
 * @return: 无
 */
void OneWire_DQ_OUT(uint8 pin, uint8 level)
{
    if (level)
    {
        int *hwp = OneWire_hwp_gpio + 4 * 4;
        *hwp = (1 << pin);
    }
    else
    {
        int *hwp = OneWire_hwp_gpio + 4 * 5;
        *hwp = (1 << pin);
    }
}

/**
 * @description: 读取单总线的高低电平信号
 * @param : pin{uint8}：要操作的引脚，可选范围0、1、2、3、7
 * @return: 0或者1
 */
bool OneWire_DQ_IN(uint8 pin)
{
    int *hwp = OneWire_hwp_gpio + 4 * 3;
    bool res = *hwp & (1 << pin);
    if (res)
        return 1;
    else
        return 0;
}

/**
 * @description: 单总线1us延时函数
 * @param : us{uint32}：调用的次数。
 * @return: 无
 */
#pragma GCC push_options
#pragma GCC optimize("O0")
void OneWire_Delay_1us(volatile uint32 us)
{
    if (us >= 0 && us < 5)
    {
        for (volatile int i = 15 * us; i > 0; i--)
        {
            ;
        }
    }
    else if (us >= 5 && us < 20)
    {
        for (volatile int i = 55 * us; i > 0; i--)
        {
            ;
        }
    }
    else if (us >= 20)
    {
        for (volatile int i = 62 * us; i > 0; i--)
        {
            ;
        }
    }
}
#pragma GCC push_options