//********************************************************************
//  Ver 1.0
//  2019.09.26  1、新建文件
//********************************************************************
#include "config.h"

I2C_Str	I2C_Info;
//I2C命令发送
void   I2C_Cmd(en_i2c_channel_t enCh, INT8U tSTA, INT8U tSto, INT8U tAA)
{
    I2C_SetFunc(enCh, I2cStart_En, tSTA);   //STA=1
    I2C_SetFunc(enCh, I2cAck_En,   tAA);    //AA=1
    I2C_SetFunc(enCh, I2cStop_En,  tSto);   //STO=0
    I2C_ClrIntFlag(enCh);
    I2C_Info.Info[enCh].ErrCnt = I2C_ErrCntMax;
    while(I2C_ReadIntFlag(enCh) == 0)
    {
        I2C_Info.Info[enCh].ErrCnt--;
        if(I2C_Info.Info[enCh].ErrCnt == 0) break;
    }
    I2C_SetFunc(enCh, I2cStart_En, tSTA);   //STA=0
}

//I2C离线状态检测
void    I2C_OffLineCheck(en_i2c_channel_t enCh)
{
    if(I2C_StateRead(enCh) == 0xf8)					//I2C离线处理
    {
        I2C_SetFunc(enCh, I2cMode_En, DISABLE);		//关闭I2C模块
        DELAY_Us(50);
        I2C_SetFunc(enCh, I2cMode_En, ENABLE);		//使能I2C模块
        DELAY_Us(50);
    }
}

//写一个字节到I2C缓冲区
void	I2C_Write(en_i2c_channel_t enCh, INT8U Value)
{
    I2C_WriteByte(enCh, Value);
    I2C_ClrIntFlag(enCh);
    I2C_Info.Info[enCh].ErrCnt = I2C_ErrCntMax;
    while(I2C_ReadIntFlag(enCh) == 0)
    {
        I2C_Info.Info[enCh].ErrCnt--;
        if(I2C_Info.Info[enCh].ErrCnt == 0) break;
    }
}

INT8U    I2C_Read(en_i2c_channel_t enCh)
{
    return(I2C_ReadByte(enCh));
}

//I2C读取N个字节
void	I2C_ReadMultiByte(en_i2c_channel_t enCh, INT8U	Addr, INT8U	Reg, INT8U *ptr, INT8U	Len)
{
    INT8U	i;

    I2C_OffLineCheck(enCh);
    I2C_Start(enCh);
    I2C_Write(enCh, Addr);
    I2C_Write(enCh, Reg);
    I2C_Stop(enCh);
    I2C_Start(enCh);
    I2C_WriteByte(enCh, Addr | 0x01);
    for(i = 0; i < Len; i++)
    {
        if(i == (Len - 1))
        {
            I2C_Ack(enCh, DISABLE);
        }
        else
        {
            I2C_Ack(enCh, ENABLE);
        }

        *ptr++ = I2C_Read(enCh);

    }
    I2C_Stop(enCh);
}


void	I2C_WriteMultiByte(en_i2c_channel_t enCh, INT8U	Addr, INT8U Reg, INT8U *ptr, INT8U Len)
{
    I2C_OffLineCheck(enCh);
    I2C_Start(enCh);
    I2C_Write(enCh, Addr);
    I2C_Write(enCh, Reg);
    while(Len--)
    {
        I2C_Write(enCh, *ptr++);
    }
    I2C_Stop(enCh);
}

//I2C中断程序
void I2C0_IRQHandler(void)
{
    INT8U tI2C0_State = I2C_StateRead(I2C0);

    switch (tI2C0_State)
    {
    case 0x00:  //总线错误，发送停止信号
        I2C_SetFunc(I2C0, I2cStop_En, ENABLE);  //STO=1
        I2C_Info.Info[I2C0].Cnt = 0;
        I2C_Info.Info[I2C0].ErrCnt = 0;
        I2C_Info.Info[I2C0].Flag = 0;
        break;

    case 0x08:
        I2C_SetFunc(I2C0, I2cStart_En, DISABLE);      //STA=0
        I2C_Write(I2C0, I2C_Info.Info[I2C0].Addr1);
        break;

    case 0x10:
        I2C_SetFunc(I2C0, I2cStart_En, DISABLE);       //STA=0
        if(I2C_Info.Info[I2C0].Flag == 0)
        {
            I2C_Write(I2C0, I2C_Info.Info[I2C0].Addr1);
        }
        else
        {
            I2C_Write(I2C0, I2C_Info.Info[I2C0].Addr2);
        }
        break;

    case 0x18:
        I2C_SetFunc(I2C0, I2cStart_En, DISABLE);    //STA=0
        I2C_Write(I2C0, I2C_Info.Info[I2C0].Addr1);
        break;

    case 0x20:
    case 0x30:
    case 0x38:
    case 0x48:
        I2C_SetFunc(I2C0, I2cStop_En,  ENABLE);         //STO=1
        I2C_SetFunc(I2C0, I2cStart_En, ENABLE);         //STA=1
        break;

    case 0x28:
        if(I2C_Info.Info[I2C0].Flag != 0)
        {
            I2C_SetFunc(I2C0, I2cStart_En, ENABLE);    //STA=1
            I2C_SetFunc(I2C0, I2cStop_En,  DISABLE);   //STO=0
        }
        else
        {
            I2C_Write(I2C0, I2C_Info.Info[I2C0].ptr[I2C_Info.Info[I2C0].Cnt++]);
        }

        if(I2C_Info.Info[I2C0].Cnt >= I2C_Info.Info[I2C0].Size)
        {
            I2C_Info.Info[I2C0].Cnt = 0;
            I2C_SetFunc(I2C0, I2cStop_En, ENABLE);
        }
        break;

    case 0x58:
        I2C_SetFunc(I2C0, I2cStop_En, ENABLE);      //STO=1
        I2C_SetFunc(I2C0, I2cAck_En,  DISABLE);     //AA=0
        break;

    case 0x40:
        I2C_Info.Info[I2C0].Cnt = 0;
        I2C_SetFunc(I2C0, I2cAck_En, ENABLE);       //AA=1
        break;

    case 0x50:
        if(I2C_Info.Info[I2C0].Cnt >= I2C_Info.Info[I2C0].Size)
        {
            I2C_SetFunc(I2C0, I2cAck_En, DISABLE);      //AA=0
            I2C_SetFunc(I2C0, I2cStop_En, DISABLE);     //STO=0
        }
        else
        {
            I2C_SetFunc(I2C0, I2cAck_En, ENABLE);       //AA=1
        }
        I2C_Info.Info[I2C0].ptr[I2C_Info.Info[I2C0].Cnt++] = I2C_ReadByte(I2C0);
        break;

    default:

        break;
    }
    I2C_ClearIrq(I2C0);
}

void I2C1_IRQHandler(void)
{
    INT8U tI2C1_State = I2C_StateRead(I2C1);

    switch (tI2C1_State)
    {
    case 0x00:  //总线错误，发送停止信号
        I2C_SetFunc(I2C1, I2cStop_En, ENABLE);  //STO=1
        I2C_Info.Info[I2C1].Cnt = 0;
        I2C_Info.Info[I2C1].ErrCnt = 0;
        I2C_Info.Info[I2C1].Flag = 0;
        break;

    case 0x08:
        I2C_SetFunc(I2C1, I2cStart_En, DISABLE);      //STA=0
        I2C_Write(I2C1, I2C_Info.Info[I2C1].Addr1);
        break;

    case 0x10:
        I2C_SetFunc(I2C1, I2cStart_En, DISABLE);       //STA=0
        if(I2C_Info.Info[I2C1].Flag == 0)
        {
            I2C_Write(I2C1, I2C_Info.Info[I2C1].Addr1);
        }
        else
        {
            I2C_Write(I2C1, I2C_Info.Info[I2C1].Addr2);
        }
        break;

    case 0x18:
        I2C_SetFunc(I2C1, I2cStart_En, DISABLE);    //STA=0
        I2C_Write(I2C1, I2C_Info.Info[I2C1].Addr1);
        break;

    case 0x20:
    case 0x30:
    case 0x38:
    case 0x48:
        I2C_SetFunc(I2C1, I2cStop_En,  ENABLE);         //STO=1
        I2C_SetFunc(I2C1, I2cStart_En, ENABLE);         //STA=1
        break;

    case 0x28:
        if(I2C_Info.Info[I2C1].Flag != 0)
        {
            I2C_SetFunc(I2C1, I2cStart_En, ENABLE);    //STA=1
            I2C_SetFunc(I2C1, I2cStop_En,  DISABLE);   //STO=0
        }
        else
        {
            I2C_Write(I2C1, I2C_Info.Info[I2C1].ptr[I2C_Info.Info[I2C1].Cnt++]);
        }

        if(I2C_Info.Info[I2C1].Cnt >= I2C_Info.Info[I2C1].Size)
        {
            I2C_Info.Info[I2C1].Cnt = 0;
            I2C_SetFunc(I2C1, I2cStop_En, ENABLE);
        }
        break;

    case 0x58:
        I2C_SetFunc(I2C1, I2cStop_En, ENABLE);      //STO=1
        I2C_SetFunc(I2C1, I2cAck_En,  DISABLE);     //AA=0
        break;

    case 0x40:
        I2C_Info.Info[I2C1].Cnt = 0;
        I2C_SetFunc(I2C1, I2cAck_En, ENABLE);       //AA=1
        break;

    case 0x50:
        if(I2C_Info.Info[I2C1].Cnt >= I2C_Info.Info[I2C1].Size)
        {
            I2C_SetFunc(I2C1, I2cAck_En, DISABLE);      //AA=0
            I2C_SetFunc(I2C1, I2cStop_En, DISABLE);     //STO=0
        }
        else
        {
            I2C_SetFunc(I2C1, I2cAck_En, ENABLE);       //AA=1
        }
        I2C_Info.Info[I2C1].ptr[I2C_Info.Info[I2C1].Cnt++] = I2C_ReadByte(I2C1);
        break;

    default:

        break;
    }
    I2C_ClearIrq(I2C1);
}