CHJ/user/Device/MCP9808.c

#include "../main/SystemInclude.h"

//##############################################################################
#ifndef ENABLE_USE_MCP9808
#pragma message("[undefined] ENABLE_USE_MCP9808")
#elif(ENABLE_USE_MCP9808)
//##############################################################################

/******************************************************************************/
void WriteWordRegister(u8 regBuf, u16 regData)
{
   //I2C_Init();
   SI2C_Start();                        // send START command
   SI2C_Write(MCP_ADR);                 //WRITE Command (see Section 4.1.4 <20><>Address Byte<74><65>)
                                       //also, make sure bit 0 is cleared <20><>0<EFBFBD><30>
   SI2C_Write(regBuf);                  // Write CONFIG Register
   SI2C_Write(regData>>8);              // Write data
   SI2C_Write(regData);                 // Write data
   SI2C_Stop();                         // send STOP command
}

/******************************************************************************/
u16 ReadWordRegister(u8 regBuf)
{
   TypeWord tempInt;
   
   //I2C_Init();
   SI2C_Start();                        // send START command
   SI2C_Write(MCP_ADR);                 //WRITE Command (see Section 4.1.4 <20><>Address Byte<74><65>)
                                       //also, make sure bit 0 is cleared <20><>0<EFBFBD><30>
   SI2C_Write(regBuf);                  // Write CONFIG Register
   
   SI2C_Start();                        // send Repeat START command
   SI2C_Write(MCP_ADR | 0x01);          //READ Command
                                        //also, make sure bit 0 is set <20><>1<EFBFBD><31>
   tempInt.Byte[1] = SI2C_Read();       // READ 8 bits
   SI2C_Ack();
   tempInt.Byte[0] = SI2C_Read();       // READ 8 bits
   SI2C_NoAck();
   SI2C_Stop();                         // send STOP command
   
   return tempInt.Word;   
}

/******************************************************************************/
void WriteByteRegister(u8 regBuf, u8 regData)
{
   //I2C_Init();
   SI2C_Start();                        // send START command
   SI2C_Write(MCP_ADR);                 //WRITE Command (see Section 4.1.4 <20><>Address Byte<74><65>)
                                       //also, make sure bit 0 is cleared <20><>0<EFBFBD><30>
   SI2C_Write(regBuf);                  // Write CONFIG Register
   SI2C_Write(regData);                 // Write data
   SI2C_Stop();                         // send STOP command
}

/******************************************************************************/
u16 ReadByteRegister(u8 regBuf)
{
   u8 temp;
   
   //I2C_Init();
   SI2C_Start();                        // send START command
   SI2C_Write(MCP_ADR);                 //WRITE Command (see Section 4.1.4 <20><>Address Byte<74><65>)
                                       //also, make sure bit 0 is cleared <20><>0<EFBFBD><30>
   SI2C_Write(regBuf);                  // Write CONFIG Register
   
   SI2C_Start();                        // send Repeat START command
   SI2C_Write(MCP_ADR | 0x01);          //READ Command
                                       //also, make sure bit 0 is set <20><>1<EFBFBD><31>
   temp = SI2C_Read();                  // READ 8 bits
   SI2C_NoAck();
   SI2C_Stop();                         // send STOP command
   
   return temp;   
}

//##############################################################################
#endif
//##############################################################################