PIC17C752-08SLASHCL datasheet(175/328 Pages) MICROCHIP

175 / 328 page

DS30289A-page 175

PIC17C7XX

// Writes the byte data to 24LC01B at the specified address

void ByteWrite(static unsigned char address, static unsigned char data)

{

StartI2C();

// Send start bit

IdleI2C();

// Wait for idle condition

WriteI2C(CONTROL);

// Send control byte

IdleI2C();

// Wait for idle condition

if (!SSPCON2bits.ACKSTAT)

// If 24LC01B ACKs

{

WriteI2C(address);

// Send control byte

IdleI2C();

// Wait for idle condition

if (!SSPCON2bits.ACKSTAT)

// If 24LC01B ACKs

WriteI2C(data);

// Send data

}

IdleI2C();

// Wait for idle condition

StopI2C();

// Send stop bit

IdleI2C();

// Wait for idle condition

return;

}

// Reads a byte of data from 24LC01B at the specified address

unsigned char ByteRead(static unsigned char address)

{

StartI2C();

// Send start bit

IdleI2C();

// Wait for idle condition

WriteI2C(CONTROL);

// Send control byte

IdleI2C();

// Wait for idle condition

if (!SSPCON2bits.ACKSTAT)

// If the 24LC01B ACKs

{

WriteI2C(address);

// Send address

IdleI2C();

// Wait for idle condition

if (!SSPCON2bits.ACKSTAT)

// If the 24LC01B ACKs

{

RestartI2C();

// Send restart

IdleI2C();

// Wait for idle condition

WriteI2C(CONTROL+1);

// Send control byte with R/W set

IdleI2C();

// Wait for idle condition

if (!SSPCON2bits.ACKSTAT)

// If the 24LC01B ACKs

{

getcI2C();

// Read a byte of data from 24LC01B

IdleI2C();

// Wait for idle condition

NotAckI2C();

// Send a NACK to 24LC01B

IdleI2C();

// Wait for idle condition

StopI2C();

// Send stop bit

IdleI2C();

// Wait for idle condition

}

return(SSPBUF);

}

EXAMPLE 15-2: INTERFACING TO A 24LC01B SERIAL EEPROM (USING MPLAB-C17) (Cont.’d)

PIC17C752-08/CL датащи(PDF) 175 Page - Microchip Technology

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