MSP430
/
LCD-NHD-SPI


								#include <msp430fr6989.h>


								//GPIO definitions

								#define CSBdefinition P1SEL1 |= BIT4         // Configure UCA0STE (slave select)

								#define CLKdefinition P1SEL1 |= BIT5         // Configure UCA0CLK

								#define SIMOdefinition P2SEL0 |= BIT0        // Configure UCA0SIMO/TXD

								//Output configuration

								#define DDRP1 P1DIR = 0x78; // 0111 1000

								#define DDRP2 P1DIR |= BIT0;

								/////////////////////////////////////////

								#define RST_0 P1OUT &= ~BIT3

								#define RST_1 P1OUT |= BIT3


								#define CSB_0 P1OUT &= ~BIT4

								#define CSB_1 P1OUT |= BIT4


								#define RS_0 P1OUT &= ~BIT6

								#define RS_1 P1OUT |= BIT6


								#define SI_0 P2OUT &= ~BIT0

								#define SI_1 P2OUT |= BIT0


								// Global variables

								unsigned char text1[] = {"Hi :D           "};

								unsigned char text2[] = {"It's done!    "};


								unsigned int position;


								//**************************

								//   MSP430F59xx Demo - eUSCI_A0, SPI 4-Wire Master

								//

								//   Description: SPI master send data to SPI slave using 4-wire mode.

								//   ACLK = 32.768kHz, MCLK = SMCLK = DCO ~1MHz.  BRCLK = ACLK/2

								//

								//

								//                   MSP430FR6989

								//                 -----------------

								//             /|\|              XIN|-

								//              | |                 |  32KHz Crystal

								//              --|RST          XOUT|-

								//                |                 |

								//                |             P2.0|-> Data Out (UCA0SIMO)

								//                |                 |

								//                |             P1.3|-> RST LCD

								//                |             P1.6|-> RS LCD

								//                |             P1.5|-> Serial Clock Out (UCA0CLK)

								//                |             P1.4|-> Slave Select (UCA0STE)

								//                |                 |

								//

								//   William Goh

								//   Texas Instruments Inc.

								//   April 2014

								//   Built with IAR Embedded Workbench V5.60 & Code Composer Studio V6.0

								//**************************


								///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////


								//Function initialization

								void initLCD();

								void initSPI();

								void display();


								void wData(unsigned char d);

								void wCommand(unsigned char c);


								volatile unsigned char TXData;


								///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////


								void main(void)

								{

								   WDTCTL = WDTPW | WDTHOLD;               // Stop watchdog timer

								   PM5CTL0 &= ~LOCKLPM5;                   // Disable the GPIO power-on default high-impedance mode to activate


								///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

								  //Pin configuration

								   CSBdefinition;                          // Configure UCA0STE (slave select)

								   CLKdefinition;                          // Configure UCA0CLK

								   SIMOdefinition;                         // Configure UCA0SIMO/TXD

								   PJSEL0 |= BIT4 | BIT5;                  // For XT1


								   DDRP1;

								   DDRP2;


								   initSPI();


								   initLCD();

								   __delay_cycles(50);

								   display();

								   __delay_cycles(50);


								   while(1){


								   }


								}//main


								///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////


								void initSPI(void){


								    // Configure USCI_A0 for SPI operation

								      UCA0CTLW0 = UCSWRST;                      // **Put state machine in reset**


								      UCA0CTLW0 |= UCSSEL__SMCLK;               // Choose SMLCK (1MHz)

								      UCA0BR0 = 0x04;//4                              // Set prescaler to 8 to get SCLK=125kHz

								      UCA0BR1 = 0;

								      UCA0MCTLW = 0;

								                                                // By default -> 4-pin, 8-bit SPI master

								      UCA0CTLW0 |= UCMST;                       // Master mode

								      UCA0CTLW0 |= UCSYNC;                      // Synchronous mode

								      UCA0CTLW0 |= UCCKPL;                      // Clock polarity high

								      UCA0CTLW0 |= UCMSB;                       // MSB first (Most Significant Bit)

								      UCA0CTLW0 |= UCMODE_2;                    // 4-pin SPI with UCxSTE active high

								      UCA0CTLW0 |= UCSTEM;                      // Generate the enable signal for a 4-wire slave


								      UCA0CTLW0 &= ~UCSWRST;                    // **Initialize USCI state machine**


								      UCA0IE |= UCTXIE;                         // Enable USCI_A0 TX interrupt

								      UCA0IFG &= ~UCTXIFG;

								}

								///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////


								//Initialize the LCD

								void initLCD(){


								    RST_0;                      //reset

								    __delay_cycles(2);

								    RST_1;                      //end reset

								    __delay_cycles(20);

								    wCommand(0x30);         //wake up

								    __delay_cycles(2);

								    wCommand(0x30);         //wake up

								    wCommand(0x30);         //wake up

								    wCommand(0x39);         //function set

								    wCommand(0x14);         //internal osc frequency

								    wCommand(0x56);         //power control

								    wCommand(0x6D);         //follower control

								    wCommand(0x70);         //contrast

								    wCommand(0x0C);         //display on

								    wCommand(0x06);         //entry mode

								    wCommand(0x01);         //clear

								    __delay_cycles(100);

								}

								void wCommand(unsigned char c){

								    CSB_0;                      //CSB active

								    RS_0;                       //Command/Instruction

								    UCA0TXBUF = c;

								    CSB_1;                      //CSB disabled

								    __delay_cycles(200);

								}

								void wData(unsigned char d){

								    CSB_0;                      //CSB active

								    RS_1;                       //Data

								    UCA0TXBUF = d;

								    CSB_1;                      //CSB disabled

								}

								void display(){

								    int a;

								    wCommand(0x80);

								    for(a=0; a<16; a++){

								       wData(text1[a]);

								    }

								    wCommand(0xC0);

								    for(a=0; a<16; a++){

								        wData(text2[a]);

								    }

								}