/*
* MAIN
*/
int main(int argc, char** argv) {
// RA1 as DO
LATA = 0;
ADCON1 = 0x06;
TRISA1 = 0;
LATA1 = 1;
// I2C configuration
i2c_setup();
unsigned char w;
for(w=0;w<20;w++)
I2C_Recv[w]=0;
unsigned int temps = 25;
unsigned char temp, length=0;
while(1){
LATA1 = ~LATA1;
Delay10KTCYx(temps);
check_interruptions();
if (DataRdyI2C()==1) {
temps += 25;
temp = ReadI2C();
//********************* Data reception from master by slave *********************
do {
while(DataRdyI2C()==0); // WAIT UNTILL THE DATA IS TRANSMITTED FROM master
I2C_Recv[length++]=getcI2C(); // save byte received
}
while(length!=20);
}
}
//******************** write sequence from slave *******************************
while(SSPSTATbits.S!=1); //wait untill STOP CONDITION
//********************* Read the address sent by master from buffer **************
while(DataRdyI2C()==0); //WAIT UNTILL THE DATA IS TRANSMITTED FROM master
temp = ReadI2C();
//********************* Slave transmission ************************************
if(SSPSTAT & 0x04) //check if master is ready for reception
while(putsI2C(I2C_Send)); // send the data to master
//-------------TERMINATE COMMUNICATION FROM MASTER SIDE---------------
CloseI2C(); //close I2C module
while(1) {
LATA1 = ~LATA1;
Delay10KTCYx(100);
}; //End of program
return (EXIT_SUCCESS);
}
/*********************************************************************
* Function: XEE_RESULT XEERead(void)
*
* PreCondition: XEEInit() && XEEBeginRead() are already called.
*
* Input: None
*
* Output: XEE_SUCCESS if successful
* other value if failed.
*
* Side Effects: None
*
* Overview: Reads next byte from EEPROM; internal address
* is incremented by one.
*
* Note: This function does not release I2C bus.
* User must call XEEEndRead() when read is not longer
* needed; I2C bus will released after XEEEndRead()
* is called.
********************************************************************/
unsigned char XEERead(void)
{
getcI2C();
while( EEPROM_SPICON2bits.RCEN ); // check that receive sequence is over.
EEPROM_SPICON2bits.ACKDT = 0; // Set ack bit
EEPROM_SPICON2bits.ACKEN = 1;
while( EEPROM_SPICON2bits.ACKEN );
return EEPROM_SSPBUF;
}
/*********************************************************************
* Function: XEE_RESULT XEEEndRead(void)
*
* PreCondition: XEEInit() && XEEBeginRead() are already called.
*
* Input: None
*
* Output: XEE_SUCCESS if successful
* other value if failed.
*
* Side Effects: None
*
* Overview: Ends sequential read cycle.
*
* Note: This function ends seuential cycle that was in
* progress. It releases I2C bus.
********************************************************************/
XEE_RESULT XEEEndRead(void)
{
getcI2C();
while( EEPROM_SPICON2bits.RCEN ); // check that receive sequence is over.
NotAckI2C();
while( EEPROM_SPICON2bits.ACKEN );
StopI2C();
while( EEPROM_SPICON2bits.PEN );
return XEE_SUCCESS;
}
