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#include "MSP430F5529.h"
#define uchar unsigned char
#define uint unsigned int
#define CPU_F ((double)8000000) //外部高頻晶振8MHZ
//#define CPU_F ((double)32768) //外部低頻晶振32.768KHZ
#define delay_us(x) __delay_cycles((long)(CPU_F*(double)x/1000000.0))
#define delay_ms(x) __delay_cycles((long)(CPU_F*(double)x/1000.0))
//12864/1602液晶控制管腳
#define RS_CLR P6OUT &= ~BIT1 //RS置低
#define RS_SET P6OUT |= BIT1 //RS置高
#define RW_CLR P6OUT &= ~BIT2 //RW置低
#define RW_SET P6OUT |= BIT2 //RW置高
#define EN_CLR P6OUT &= ~BIT3 //E置低
#define EN_SET P6OUT |= BIT3 //E置高
//彩屏/12864液晶/1602液晶的數(shù)據(jù)口，三液晶共用
#define DataDIR P3DIR //數(shù)據(jù)口方向
#define DataPort P3OUT //P4口為數(shù)據(jù)口
void clock_init()
{
UCSCTL3 = SELREF_2; // Set DCO FLL reference = REFO
UCSCTL4 |= SELA_2; // Set ACLK = REFO
UCSCTL0 = 0x0000; // Set lowest possible DCOx, MODx
// Loop until XT1,XT2 & DCO stabilizes - In this case only DCO has to stabilize
do
{
UCSCTL7 &= ~(XT2OFFG + XT1LFOFFG + DCOFFG);
// Clear XT2,XT1,DCO fault flags
SFRIFG1 &= ~OFIFG; // Clear fault flags
}while (SFRIFG1&OFIFG); // Test oscillator fault flag
__bis_SR_register(SCG0); // Disable the FLL control loop
UCSCTL1 = DCORSEL_5; // Select DCO range 16MHz operation
UCSCTL2 |= 249; // Set DCO Multiplier for 8MHz
// (N + 1) * FLLRef = Fdco
// (249 + 1) * 32768 = 8MHz
__bic_SR_register(SCG0); // Enable the FLL control loop
// Worst-case settling time for the DCO when the DCO range bits have been
// changed is n x 32 x 32 x f_MCLK / f_FLL_reference. See UCS chapter in 5xx
// UG for optimization.
// 32 x 32 x 8 MHz / 32,768 Hz = 250000 = MCLK cycles for DCO to settle
__delay_cycles(250000);
}
//*************************************************************************
// 初始化IO口子程序
//*************************************************************************
void Port_init()
{
P1DIR|=BIT0;
P1OUT|=BIT0;
P3SEL = 0x00;
P3DIR = 0xFF; //數(shù)據(jù)口輸出模式
P6SEL = 0x00;
P6DIR|= BIT1 + BIT2 + BIT3; //控制口設(shè)置為輸出模式
}
//***********************************************************************
// 顯示屏命令寫(xiě)入函數(shù)
//***********************************************************************
void LCD_write_com(unsigned char com)
{
RS_CLR;
RW_CLR;
EN_SET;
DataPort = com; //命令寫(xiě)入端口
delay_ms(5);
EN_CLR;
}
//***********************************************************************
// 顯示屏數(shù)據(jù)寫(xiě)入函數(shù)
//***********************************************************************
void LCD_write_data(unsigned char data)
{
RS_SET;
RW_CLR;
EN_SET;
DataPort = data; //數(shù)據(jù)寫(xiě)入端口
delay_ms(5);
EN_CLR;
}
//***********************************************************************
// 顯示屏清空顯示
//***********************************************************************
void LCD_clear(void)
{
LCD_write_com(0x01); //清屏幕顯示
delay_ms(5);
}
//***********************************************************************
// 顯示屏字符串寫(xiě)入函數(shù)
//***********************************************************************
void LCD_write_str(unsigned char x,unsigned char y,unsigned char *s)
{
if (y == 0)
{
LCD_write_com(0x80 + x); //第一行顯示
}
else
{
LCD_write_com(0xC0 + x); //第二行顯示
}
while (*s)
{
LCD_write_data( *s);
s ++;
}
}
//***********************************************************************
// 顯示屏單字符寫(xiě)入函數(shù)
//***********************************************************************
void LCD_write_char(unsigned char x,unsigned char y,unsigned char data)
{
if (y == 0)
{
LCD_write_com(0x80 + x); //第一行顯示
}
else
{
LCD_write_com(0xC0 + x); //第二行顯示
}
LCD_write_data( data);
}
//***********************************************************************
// 顯示屏初始化函數(shù)
//***********************************************************************
void LCD_init(void)
{
LCD_write_com(0x38); //顯示模式設(shè)置
delay_ms(5);
LCD_write_com(0x08); //顯示關(guān)閉
delay_ms(5);
LCD_write_com(0x01); //顯示清屏
delay_ms(5);
LCD_write_com(0x06); //顯示光標(biāo)移動(dòng)設(shè)置
delay_ms(5);
LCD_write_com(0x0C); //顯示開(kāi)及光標(biāo)設(shè)置
delay_ms(5);
}
void main( void )
{
// Stop watchdog timer to prevent time out reset
WDTCTL = WDTPW + WDTHOLD;
clock_init();
uchar i,*p;
Port_init(); //系統(tǒng)初始化，設(shè)置IO口屬性
delay_ms(100); //延時(shí)100ms
LCD_init(); //液晶參數(shù)初始化設(shè)置
LCD_clear(); //清屏
while (1)
{
i = 1;
p = "xxxxxxxx"; //字符串輸出顯示
LCD_clear();
LCD_write_str(0,0,"Welcome.DM430-L");
delay_ms(250);
while (*p) {
LCD_write_char(i,1,*p); //單個(gè)字符輸出顯示
i ++;
p ++;
delay_ms(100); //延時(shí)250ms
}
delay_ms(250);
P1OUT^=BIT0;
}
}

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