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 outgoing data communication
* The outgoing I2C uses MSSP1
*/
int setupOutgoing() {
// set pins RC14, RC15 as inputs
TRISCbits.TRISC3 = 1; // SCL1
ANSELCbits.ANSC3 = 0;
TRISCbits.TRISC4 = 1; // SDA1
ANSELCbits.ANSC4 = 0;
// configure i2c1 for master mode @ 100 kHz
CloseI2C1();
OpenI2C1(MASTER, SLEW_OFF);
SSPADD = BD_RT;
return (1);
}
void InitDisplay()
{
unsigned int config1 = I2C_ON | I2C_7BIT_ADD;
//unsigned int config2 = 15; // Works with no pll in use
unsigned int config2 = 24;
delay(100); // THIS IS REQUIRED TO ALLOW THE VOLTAGE TO STABILIZE BEFORE INIT-ING THE DISPLAY
ConfigIntI2C1(MI2C_INT_OFF); //Disable I2C interrupt
CloseI2C1();
OpenI2C1( config1, config2);
IdleI2C1();
// Assert a start condition
StartI2C1();
while(_SEN);
// Write the address of the slave
MasterWriteI2C1(Slave);
while(I2C1STATbits.TBF); //Wait till address is transmitted
while(!IFS1bits.MI2C1IF); //Wait for ninth clock cycle
MasterWriteI2C1(Comsend);
IdleI2C1();
MasterWriteI2C1(0x38);
IdleI2C1();
delay(10);
MasterWriteI2C1(0x39);
IdleI2C1();
delay(10);
MasterWriteI2C1(0x14);
IdleI2C1();
MasterWriteI2C1(0x25);
IdleI2C1();
MasterWriteI2C1(0x5E);
IdleI2C1();
MasterWriteI2C1(0x6D);
IdleI2C1();
MasterWriteI2C1(0x0C);
IdleI2C1();
MasterWriteI2C1(0x01);
IdleI2C1();
MasterWriteI2C1(0x06);
IdleI2C1();
delay(10);
StopI2C1();
IdleI2C1();
CGRAM(); //define CGRAM
StartI2C1();
MasterWriteI2C1(Slave);
IdleI2C1();
MasterWriteI2C1(Comsend);
IdleI2C1();
MasterWriteI2C1(0x39);
IdleI2C1();
MasterWriteI2C1(0x01); //go back Home
IdleI2C1();
StopI2C1();
delay(10);
}
