MCP9804 Microchip Technology, MCP9804 Datasheet - Page 46

• Manufacturer Part Number: MCP9804
• Description: Accuracy Digital Temperature Sensor
• Manufacturer: Microchip Technology

MCP9804
/********************************************************************
*
*
*
*
********************************************************************/
unsigned char ReadI2C(unsigned char ACK)
{
}
/********************************************************************
*
*
*
*
********************************************************************/
void ACKI2C(void)
{
}
/********************************************************************
*
*
*
*
********************************************************************/
void nACK(void)
{
}
/********************************************************************
*
*
*
*
********************************************************************/
void WaitForACK(void)
{
}
DS22203A-page 46
while (SSPSTATbits.BF);
SSPCON2bits.RCEN = 1;
while (!SSPSTATbits.BF);
if ACK
else
return (SSPBUF);
PIR1bits.SSPIF = 0;
SSPCON2bits.ACKDT = 0;
SSPCON2bits.ACKEN = 1;
while(!PIR1bits.SSPIF);
PIR1bits.SSPIF = 0;
PIR1bits.SSPIF = 0;
SSPCON2bits.ACKDT = NACK;
SSPCON2bits.ACKEN = 1;
while(!PIR1bits.SSPIF);
PIR1bits.SSPIF = 0;
PIR1bits.SSPIF = 0;
while(!PIR1bits.SSPIF); //Wait for data received Interrupt
PIR1bits.SSPIF = 0;//Clear Interrupt
ACKI2C();
nACK();
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//
ReadI2C2
contents of SSP2BUF register
ACK = 1 and NAK = 0
Read a byte from I2C bus and ACK/NAK
AckI2C
void
void
Initiate ACK bus condition.
nACKI2C
void
void
Initiate no-ACK bus condition.
WaitForACK
void
void
//Clear Interrupt
// Give ACK
//Wait for flag to set
//Start ACK sequence
//Disable ACK
// enable master for 1 byte reception
// wait until byte received
// return with read byte
*
// set acknowledge bit state for ACK
// initiate bus acknowledge sequence
*
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© 2009 Microchip Technology Inc.
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