void portableMasterCloseI2C(I2cBus* i2cBus) {
if (i2cBus == NULL) {
CloseI2C1();
}
else {
unsigned portIndex = i2cBus->port;
if (portIndex == I2C_BUS_PORT_1) {
CloseI2C1();
}
#if defined _I2C2
else if (portIndex == I2C_BUS_PORT_2) {
CloseI2C2();
}
#endif
#if defined _I2C3
else if (portIndex == I2C_BUS_PORT_3) {
// TODO : Throw Not Implemented
// I2C3CONCLR = _I2C3CON_ON_MASK,
// DisableIntSI2C3,
// DisableIntMI2C3,
// DisableIntBI2C3
}
#endif
#if defined _I2C4
else if (portIndex == I2C_BUS_PORT_4) {
// TODO : Throw Not Implemented
// I2C4CONCLR = _I2C4CON_ON_MASK,
// mI2C4SIntEnable(0),
// mI2C4MIntEnable(0),
// mI2C1BIntEnable(0)
}
}
#endif
}
/*
* configures and starts incoming data communication
* The incoming I2C uses MSSP2
*/
int setupIncoming() {
int SLAVE_ADDRESS = 0x28; // the slave address
// set pins RC14, RC15 as inputs
TRISCbits.TRISC3 = 1; // SCL1
ANSELCbits.ANSC3 = 0;
TRISCbits.TRISC4 = 1; // SDA1
ANSELCbits.ANSC4 = 0;
// configure MSSP2 for i2c slave operation.
CloseI2C2();
OpenI2C2(SLAVE_7, SLEW_OFF);
SSPADD = SLAVE_ADDRESS;
return (1);
}