MSP430F5529+1602源程序 - - Powered by Discuz!

#include "MSP430F5529.h"
#define uchar unsigned char
#define uint unsigned int
#define CPU_F ((double)8000000) //外部高频晶振8MHZ
//#define CPU_F ((double)32768) //外部低频晶振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液晶控制管脚
#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液晶的数据口，三液晶共用
#define DataDIR P3DIR //数据口方向
#define DataPort P3OUT //P4口为数据口
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; //数据口输出模式
P6SEL = 0x00;
P6DIR|= BIT1 + BIT2 + BIT3; //控制口设置为输出模式
}
//***********************************************************************
// 显示屏命令写入函数
//***********************************************************************
void LCD_write_com(unsigned char com)
{
RS_CLR;
RW_CLR;
EN_SET;
DataPort = com; //命令写入端口
delay_ms(5);
EN_CLR;
}
//***********************************************************************
// 显示屏数据写入函数
//***********************************************************************
void LCD_write_data(unsigned char data)
{
RS_SET;
RW_CLR;
EN_SET;
DataPort = data; //数据写入端口
delay_ms(5);
EN_CLR;
}
//***********************************************************************
// 显示屏清空显示
//***********************************************************************
void LCD_clear(void)
{
LCD_write_com(0x01); //清屏幕显示
delay_ms(5);
}
//***********************************************************************
// 显示屏字符串写入函数
//***********************************************************************
void LCD_write_str(unsigned char x,unsigned char y,unsigned char *s)
{
if (y == 0)
{
LCD_write_com(0x80 + x); //第一行显示
}
else
{
LCD_write_com(0xC0 + x); //第二行显示
}
while (*s)
{
LCD_write_data( *s);
s ++;
}
}
//***********************************************************************
// 显示屏单字符写入函数
//***********************************************************************
void LCD_write_char(unsigned char x,unsigned char y,unsigned char data)
{
if (y == 0)
{
LCD_write_com(0x80 + x); //第一行显示
}
else
{
LCD_write_com(0xC0 + x); //第二行显示
}
LCD_write_data( data);
}
//***********************************************************************
// 显示屏初始化函数
//***********************************************************************
void LCD_init(void)
{
LCD_write_com(0x38); //显示模式设置
delay_ms(5);
LCD_write_com(0x08); //显示关闭
delay_ms(5);
LCD_write_com(0x01); //显示清屏
delay_ms(5);
LCD_write_com(0x06); //显示光标移动设置
delay_ms(5);
LCD_write_com(0x0C); //显示开及光标设置
delay_ms(5);
}
void main( void )
{
// Stop watchdog timer to prevent time out reset
WDTCTL = WDTPW + WDTHOLD;
clock_init();
uchar i,*p;
Port_init(); //系统初始化，设置IO口属性
delay_ms(100); //延时100ms
LCD_init(); //液晶参数初始化设置
LCD_clear(); //清屏
while (1)
{
i = 1;
p = "xxxxxxxx"; //字符串输出显示
LCD_clear();
LCD_write_str(0,0,"Welcome.DM430-L");
delay_ms(250);
while (*p) {
LCD_write_char(i,1,*p); //单个字符输出显示
i ++;
p ++;
delay_ms(100); //延时250ms
}
delay_ms(250);
P1OUT^=BIT0;
}
}

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