/**
* Function to read a word.
* \param res - pointer in which to store the result
* \return - 0 the operation is successful
* \return - 1 the operation is failed. Check internal error for more details
*/
BOOL SPIReadWord(unsigned int * res)
{
int counter=0;
if(SPI2CON1bits.MSTEN==0)
{
#ifdef SPI_DBG
uartwrite(1,"[SPI_DBG] Master op in Slave mode, quitting\n");
#endif
_intSPIerr=NotMasterMode;
return 1;
}
if(SPIWriteWord(0x00)==0)
{
while((SPI2STATbits.SPIRBF==0) && (counter!=255))
counter++;
if(counter<255)
{
#ifdef SPI_DBG
uartwrite(1,"[SPI_DBG] Rx buf ok, reading\n");
#endif
if (SPI2CON1bits.MODE16)
{
#ifdef SPI_DBG
uartwrite(1,"[SPI_DBG] Mode16 ok, reading\n");
#endif
*res = SPI2BUF;
_intSPIerr=SPI_NO_ERR;
return 0;
}
else
{
#ifdef SPI_DBG
uartwrite(1,"[SPI_DBG] Mode16 read, no Mode16 set, NOT READING!\n");
#endif
_intSPIerr = Mode16ReadNoMode16;
return 1;
}
}
#ifdef SPI_DBG
uartwrite(1,"[SPI_DBG] Rx buf empty, NOT READING!\n");
#endif
_intSPIerr = RxBufEmpty;
return 1;
}
return 1;
}
/**
* Function to perform a contemporary write and read of a word.
* This is used when the slave device supports full-duplex.
* In this case while clocking data out, data in is considered valid and saved.
* \param data - unsigned int data to be sent
* \param res - pointer to store the received data
* \return - 0 the operation is successful
* \return - 1 the operation is failed. Check internal error for more details
*/
BOOL SPIWriteReadWord(unsigned int data, unsigned int * res)
{
if(SPI2CON1bits.MSTEN==0)
{
#ifdef SPI_DBG
uartwrite(1,"[SPI_DBG] Master op in Slave mode, quitting\n");
#endif
_intSPIerr=NotMasterMode;
return 1;
}
//BOOL outcome;
if(SPIWriteWord(data)==0)
{
//outcome = SPIReadWord(res);
//return outcome;
*res = SPI2BUF;
return 0;
}
return 1;
}
// transfer line buffer to display using SPI
// input: line position where line buffer is rendered
void SPIWriteLine(unsigned char line)
{
P2OUT |= _SCS; // SCS high, ready talking to display
SPIWriteByte(MLCD_WR | VCOM); // send command to write line(s)
SPIWriteByte(line+1); // send line address
UCB0CTL0 |= UCMSB; // switch SPI to MSB first for proper bitmap orientation
unsigned char j = 0;
while(j < (PIXELS_X/8)) // write pixels / 8 bytes
{
UCB0TXBUF = LineBuff[j++]; // transfer byte
while (UCB0STAT & UCBUSY); // wait for transfer to complete
}
UCB0CTL0 &= ~UCMSB; // switch SPI back to LSB first for commands
SPIWriteWord(0); // send 16 bit to latch buffers and end transfer
P2OUT &= ~_SCS; // SCS low, finished talking to display
}
// transfer line buffer to display using SPI
// input: line position where line buffer is rendered
void SPIWriteLine(unsigned char line)
{
P1OUT |= _SCS; // SCS high, ready talking to display
SPIWriteByte(MLCD_WR | VCOM); // send command to write line(s)
SPIWriteByte(line+1); // send line address
USICTL0 &= ~USILSB; // switch SPI to MSB first for proper bitmap orientation
unsigned char j = 0;
while(j < (PIXELS_X/8)) // write pixels / 8 bytes
{
USISRH = LineBuff[j++]; // store low byte
USISRL = LineBuff[j++]; // store high byte
USICNT |= USISCLREL | USI16B | USICNT4; // release SCLK when done, transfer 16 bits
while(!(USICTL1 & USIIFG)); // wait for transfer to complete
}
USICTL0 |= USILSB; // switch SPI back to LSB first for commands
SPIWriteWord(0); // send 16 bit to latch buffers and end transfer
P1OUT &= ~_SCS; // SCS low, finished talking to display
}
int SPI3W_sendCommand(char cmd){
int ret=0;
Transfer f = {
.data = cmd,
.type = 0,
};
void* structure = &f;
//printf("%i\n", sizeof(Transfer));
ret = SPIWriteWord(structure);
if(ret == -1)
pabort("Invalid Command");
return ret;
}
int SPI3W_sendData(char datal){
int ret=0;
Transfer f = {
.data = datal,
.type = 1,
};
void* structure = &f;
//printf("%i\n", sizeof(Transfer));
ret = SPIWriteWord(structure);
if(ret == -1)
pabort("Invalid Data");
return ret;
}
int init_tft(int deviceNum) {
int ret=0;
int SPISpeed = 2000000;
ret = initResetPin();
if(ret == -1){
pabort("Unable to initialize reset PIN");
}
ret = SPIInit(deviceNum, 9, SPISpeed);
if(ret < 0){
pabort("Unable to initialize SPI");
}
//***************************RESET LCD Driver*******************************
// SET RST Pin high
resetSet();
usleep(1000);
// SET RST Pin low
resetClear();
usleep(20000);
// SET RST Pin high
resetSet();
usleep(120000);
SPI3W_sendCommand(0x11); // Sleep out and Charge Pump on
usleep(120000);
SPI3W_sendCommand(0xB1); //SETPWCTR
SPI3W_sendData(0x02);
SPI3W_sendData(0x35);
SPI3W_sendData(0x36);
SPI3W_sendCommand(0xB2); //SETDISPLAY
SPI3W_sendData(0x02);
SPI3W_sendData(0x35);
SPI3W_sendData(0x36);
SPI3W_sendCommand(0xB3); //Doesn't exist
SPI3W_sendData(0x02);
SPI3W_sendData(0x35);
SPI3W_sendData(0x36);
SPI3W_sendData(0x02);
SPI3W_sendData(0x35);
SPI3W_sendData(0x36);
SPI3W_sendCommand(0xB4); //SETCYC
SPI3W_sendData(0x07);
SPI3W_sendCommand(0xC0); //SETSTBA
SPI3W_sendData(0xa2);
SPI3W_sendData(0x02);
SPI3W_sendData(0x04);
SPI3W_sendCommand(0xc1); //Doesn't exist
SPI3W_sendData(0xc5);
SPI3W_sendCommand(0xc2); //Doesn't exist
SPI3W_sendData(0x0d);
SPI3W_sendData(0x00);
SPI3W_sendCommand(0xc3); // SETID
SPI3W_sendData(0x8d);
SPI3W_sendData(0x1a);
SPI3W_sendCommand(0xc4); //Doesn't exist
SPI3W_sendData(0x8d);
SPI3W_sendData(0xee);
SPI3W_sendCommand(0xc5); //Doesn't exist
SPI3W_sendData(0x09);
SPI3W_sendCommand(0xE0); //Gamma setting For LGIT Panel
SPI3W_sendData(0x0a);
SPI3W_sendData(0x1c);
SPI3W_sendData(0x0c);
SPI3W_sendData(0x14);
SPI3W_sendData(0x33);
SPI3W_sendData(0x2b);
SPI3W_sendData(0x24);
SPI3W_sendData(0x28);
SPI3W_sendData(0x27);
SPI3W_sendData(0x25);
SPI3W_sendData(0x2C);
SPI3W_sendData(0x39);
SPI3W_sendData(0x00);
SPI3W_sendData(0x05);
SPI3W_sendData(0x03);
SPI3W_sendData(0x0d);
SPI3W_sendCommand(0xE1); //Doesn't exist
SPI3W_sendData(0x0a);
SPI3W_sendData(0x1c);
SPI3W_sendData(0x0c);
SPI3W_sendData(0x14);
SPI3W_sendData(0x33);
SPI3W_sendData(0x2b);
SPI3W_sendData(0x24);
SPI3W_sendData(0x28);
SPI3W_sendData(0x27);
SPI3W_sendData(0x25);
SPI3W_sendData(0x2D);
SPI3W_sendData(0x3a);
SPI3W_sendData(0x00);
SPI3W_sendData(0x05);
SPI3W_sendData(0x03);
SPI3W_sendData(0x0d);
SPI3W_sendCommand(0x3A); //Doesn't exist
SPI3W_sendData(0x06);
SPI3W_sendCommand(0x29); //Display On
usleep(150);
}
