MSP430G2553 Hardware SPI and ILI9341

[Lacto 2]

Hello,

I try to write my own library for the MSP430G2553 and and the 2.2" ILI9341 display.

I know RobG has made one but this project is basically for learning about LCDs and SPI.

 

I took the code from http://www.elecfreaks.com/wiki/index.php?title=2.2S%22_TFT_LCD:_TFT01-2.2S and modified it for the MSP430G2553. It worked fine but only as solftware SPI. Now I want to use the hardware SPI. Here ist my code:

#include  <msp430g2553.h>

#define LCD_MISO BIT1
#define LCD_CLK  BIT4
#define LCD_MOSI BIT2
#define LCD_DC   BIT0
#define LCD_CS   BIT3
#define LCD_REST BIT5


void LCD_Writ_Bus(char data)
{
  P1OUT &= ~LCD_CS;
  UCA0TXBUF = data;
  //while(UCA0TXBUF);
  //while(UCA0TXIFG & UC0IFG);
  while (UCA0STAT & UCBUSY);
  //_delay_cycles(120000);
  P1OUT |= LCD_CS;
}

void LCD_Write_COM(char VL)
{
  P1OUT &= ~LCD_DC;
  LCD_Writ_Bus(VL);
}

void LCD_Write_DATA(char VL)
{
  P1OUT |= LCD_DC;
  LCD_Writ_Bus(VL);
}

void Address_set(unsigned int x1,unsigned int y1,unsigned int x2,unsigned int y2)
{
   LCD_Write_COM(0x2a);
   LCD_Write_DATA(x1>>8);
   LCD_Write_DATA(x1);
   LCD_Write_DATA(x2>>8);
   LCD_Write_DATA(x2);

   LCD_Write_COM(0x2b);
   LCD_Write_DATA(y1>>8);
   LCD_Write_DATA(y1);
   LCD_Write_DATA(y2>>8);
   LCD_Write_DATA(y2);

   LCD_Write_COM(0x2C);
}

void LCD_Init(void)
{


	P1OUT &= ~LCD_REST;
	_delay_cycles(120000);
	P1OUT |= LCD_REST;
	_delay_cycles(120000);

        LCD_Write_COM(0xCB);//Power control A
        LCD_Write_DATA(0x39);
        LCD_Write_DATA(0x2C);
        LCD_Write_DATA(0x00);
        LCD_Write_DATA(0x34);
        LCD_Write_DATA(0x02);

        LCD_Write_COM(0xCF);//Power control B
        LCD_Write_DATA(0x00);
        LCD_Write_DATA(0XC1);
        LCD_Write_DATA(0X30);

        LCD_Write_COM(0xE8);//Driver timing control A
        LCD_Write_DATA(0x85);
        LCD_Write_DATA(0x00);
        LCD_Write_DATA(0x78);

        LCD_Write_COM(0xEA);//Driver timing control B
        LCD_Write_DATA(0x00);
        LCD_Write_DATA(0x00);

        LCD_Write_COM(0xED);//Power on sequence control
        LCD_Write_DATA(0x64);
        LCD_Write_DATA(0x03);
        LCD_Write_DATA(0X12);
        LCD_Write_DATA(0X81);

        LCD_Write_COM(0xF7);//Enable 3G
        LCD_Write_DATA(0x20);

        LCD_Write_COM(0xC0);    //Power control
        LCD_Write_DATA(0x23);   //VRH[5:0]

        LCD_Write_COM(0xC1);    //Power control
        LCD_Write_DATA(0x10);   //SAP[2:0];BT[3:0]

        LCD_Write_COM(0xC5);    //VCM control
        LCD_Write_DATA(0x3e);   //Contrast
        LCD_Write_DATA(0x28);

        LCD_Write_COM(0xC7);    //VCM control2
        LCD_Write_DATA(0x86);   //--

        LCD_Write_COM(0x36);    // Memory Access Control
        LCD_Write_DATA(0x48);   //C8

        LCD_Write_COM(0x3A);//COLMOD: Pixel Format Set
        LCD_Write_DATA(0x55);

        LCD_Write_COM(0xB1);//Frame Rate Control (In Normal Mode/Full Colors)
        LCD_Write_DATA(0x00);
        LCD_Write_DATA(0x18);

        LCD_Write_COM(0xB6);    // Display Function Control
        LCD_Write_DATA(0x08);
        LCD_Write_DATA(0x82);
        LCD_Write_DATA(0x27);

        LCD_Write_COM(0x11);    //Exit Sleep
        _delay_cycles(120000);

        LCD_Write_COM(0x29);    //Display on
        LCD_Write_COM(0x2c);
}

void Pant(char VL)
{
  int i,j;
  Address_set(0,0,240,320);
  for(i=0;i<320;i++)
  {
    for (j=0;j<480;j++)
    {
      LCD_Write_DATA(VL);
    }
  }
}

void loop()
{
  Pant(0xFF);
  Pant(0xF0);
  Pant(0xE0);
  Pant(0x05);
  Pant(0x1F);
  Pant(0x00);
}

void main(void) {
    WDTCTL = WDTPW | WDTHOLD;	// Stop watchdog timer
    BCSCTL1 = CALBC1_12MHZ; // Set range
    DCOCTL = CALDCO_12MHZ;
    BCSCTL2 = 0;

    //Port1(ILI9341)
    P1DIR = LCD_DC + LCD_CS + LCD_REST;
    P1OUT = LCD_CS;
    P1SEL = LCD_MISO + LCD_CLK + LCD_MOSI;
    P1SEL2 = LCD_MISO + LCD_CLK + LCD_MOSI;


    UCA0CTL0 = UCMSB + UCMST + UCMODE_1; // 4-pin, 8-bit SPI master
    UCA0CTL1 = UCSSEL_2; // SMCLK
    UCA0BR0 = 3; //
    UCA0BR1 = 0; //
    //UCA0MCTL = 0;                             // No modulation
    UCA0CTL1 &= ~UCSWRST;

    LCD_Init();
    loop();
    while(1);

}

Nothing happens and I have no idea why ...

[RobG 1,892]

It's probably because your USCI is not in synchronous mode, add UCSYNC.

In addition, use 3 pin mode since you are not using UCA0STE (UCMODE_1) and SPI mode 1 (UCCKPH)

UCA0CTL0 = UCMSB + UCMST + UCSYNC + UCCKPH; // 4-pin, 8-bit SPI master

[Lacto 2]

Thanks RobG. It works.

[olajideolaolorun 0]

I tried this Rob and its still just a blank screen.

The code compiled, no error.

[olajideolaolorun 0]

@@RobG

I tried this Rob and its still just a blank screen.

The code compiled, no error.