110 lines
4.3 KiB
C
110 lines
4.3 KiB
C
#include "../main/SystemInclude.h"
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/* File start *****************************************************************/
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#if ENABLE_USE_MCP9808
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/******************************************************************************/
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/******************************************************************************/
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void WriteWordRegister(u8 regBuf, u16 regData)
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{
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SI2C_Start(); // send START command
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SI2C_Write(MCP_ADR); // WRITE Command (see Section 4.1.4 “Address Byte”)
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// also, make sure bit 0 is cleared ‘0’
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SI2C_Write(regBuf); // Write CONFIG Register
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SI2C_Write(regData>>8); // Write data
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SI2C_Write(regData); // Write data
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SI2C_Stop(); // send STOP command
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}
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/******************************************************************************/
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u16 ReadWordRegister(u8 regBuf)
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{
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TypeWord tempInt;
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SI2C_Start(); // send START command
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SI2C_Write(MCP_ADR); // WRITE Command (see Section 4.1.4 “Address Byte”)
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// also, make sure bit 0 is cleared ‘0’
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SI2C_Write(regBuf); // Write CONFIG Register
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SI2C_Start(); // send Repeat START command
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SI2C_Write(MCP_ADR | 0x01); // READ Command
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// also, make sure bit 0 is set ‘1’
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tempInt.Byte[1] = SI2C_Read(); // READ 8 bits
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SI2C_Ack();
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tempInt.Byte[0] = SI2C_Read(); // READ 8 bits
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SI2C_NoAck();
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SI2C_Stop(); // send STOP command
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return tempInt.Word;
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}
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/******************************************************************************/
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void WriteByteRegister(u8 regBuf, u8 regData)
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{
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SI2C_Start(); // send START command
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SI2C_Write(MCP_ADR); // WRITE Command (see Section 4.1.4 “Address Byte”)
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// also, make sure bit 0 is cleared ‘0’
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SI2C_Write(regBuf); // Write CONFIG Register
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SI2C_Write(regData); // Write data
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SI2C_Stop(); // send STOP command
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}
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/******************************************************************************/
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u16 ReadByteRegister(u8 regBuf)
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{
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u8 temp;
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SI2C_Start(); // send START command
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SI2C_Write(MCP_ADR); // WRITE Command (see Section 4.1.4 “Address Byte”)
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// also, make sure bit 0 is cleared ‘0’
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SI2C_Write(regBuf); // Write CONFIG Register
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SI2C_Start(); // send Repeat START command
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SI2C_Write(MCP_ADR | 0x01); // READ Command
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// also, make sure bit 0 is set ‘1’
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temp = SI2C_Read(); // READ 8 bits
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SI2C_NoAck();
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SI2C_Stop(); // send STOP command
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return temp;
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}
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/******************************************************************************/
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void TestTemperatureInit(u8 regValue)
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{
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WriteWordRegister(CONFIG, CONVERSION);
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//WriteByteRegister(RREG, RESULT_0_125_BIT);
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WriteByteRegister(RREG, regValue);
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HWState.EnableTempInit = 0;
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}
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/******************************************************************************/
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s16 TestTemperature(void)
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{
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u32 tempLongInt;
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s16 tempTA;
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tempTA = (u32)ReadWordRegister(TA);
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tempTA &= 0x1fff;
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tempLongInt = (u32)(tempTA & 0xFFF);
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if(tempTA >= 0x1000) tempLongInt = 0xFFF - tempLongInt;
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tempLongInt = (tempLongInt * 6400) >> 10; // 0.0625*1024*100 /1024
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if(tempTA >= 0x1000){
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tempTA *= -1;
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}
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else tempTA = (u16)tempLongInt; // Temperature*100
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if(voltageDetected[TPCB] >= 0x1000) tempTA *= -1;
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return tempTA;
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}
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/******************************************************************************/
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void TemperatureLowPower(void)
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{
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WriteWordRegister(CONFIG, SHUT_DOWN);
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}
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/* File end *****************************************************************/
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#endif
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/****************************************************************************/ |