#include <MSP430X14X.h>
#include "init.h"

void Init_ADC(void)
{
    //設置P6.0為模擬輸入通道
    P6SEL = 0X07;                
    //設置ENC為0，從而修改ADC12寄存器的值
    ADC12CTL0 &= ~(ENC);  
    //轉換的起始地址為：ADCMEM0       
    ADC12CTL1 |= CSTARTADD_0;	 
    //設置參考電壓分別為AVSS和AVCC，輸入通道為A0
    ADC12MCTL0 = INCH_0;         
    //設置參考電壓分別為AVSS和AVCC，輸入通道為A1                            
    ADC12MCTL1 = INCH_1;         
    //設置參考電壓分別為AVSS和AVCC，輸入通道為A2
    ADC12MCTL2 = INCH_2;
    //設置參考電壓分別為AVSS和AVCC，輸入通道為A3
    ADC12MCTL3 = INCH_3;     
    //設置參考電壓分別為AVSS和AVCC，輸入通道為A4
    ADC12MCTL4 = INCH_4;         
    //設置參考電壓分別為AVSS和AVCC，輸入通道為A5
    ADC12MCTL5 = INCH_5;         
    //設置參考電壓分別為AVSS和AVCC，輸入通道為A6
    ADC12MCTL6 = INCH_6;
    //設置參考電壓分別為AVSS和AVCC，輸入通道為A7
    ADC12MCTL7 = INCH_7 + EOS;   
    	    
    ADC12CTL0 |= ADC12ON;
    ADC12CTL0 |= MSC;
    
    //轉換模式為：多通道、單次轉換
    ADC12CTL1 |= CONSEQ_1;	  
    
    //SMCLK,時鐘分頻為1,采樣脈沖由采用定時器產生
    ADC12CTL1 |= ADC12SSEL_1;	  
    ADC12CTL1 |= ADC12DIV_0;
    ADC12CTL1 |= (SHP);
    //使能ADC轉換            
    ADC12CTL0 |= ENC;		  
    return;
}
void Init_TimerA(void)
{
    // 選擇SMCLK，清除TAR
    TACTL = TASSEL1 + TACLR;   
    // 1/8 SMCLK   
    TACTL += ID1;			
    TACTL += ID0;   
    // CCR0 中斷允許              
    CCTL0 = CCIE;
    // 時間間隔為 250Hz	          
    CCR0 = 4000;
    // 增記數模式		  
    TACTL |= MC0;		  
    
    return;
}
void Init_Port(void)
{
    //將P4口和P5口設置為輸入方式
    P4DIR = 0;
    P5DIR = 0;
    
    //將P4口和P5口設置為一般I/O口
    P4SEL = 0;
    P5SEL = 0;
    
    // 將P4.0設置為輸出方向
    P4DIR |= BIT0;
     
    return;
}
void Init_TimerB(void)
{
    TBCTL = TBSSEL0 + TBCLR;      // 選擇ACLK，清除TAR
    TBCCTL0 = CCIE;               // TBCCR0 中斷允許
    TBCCR0 = 32768;	          // 時間間隔為 1 s
    
    TBCTL |= MC0;                 // 增記數模式
}
void Delay_ms(unsigned long nValue)//毫秒為單位，8MHz為主時鐘
{
    unsigned long nCount;
    int i;
    unsigned long j;
    nCount = 2667;
    for(i = nValue;i > 0;i--)
    {
    	for(j = nCount;j > 0;j--);
    }
    return;
}
void Delay_us(unsigned long nValue)//微秒為單位，8MHz為主時鐘
{
    int nCount;
    int i;
    int j;
    nCount = 3;
    for(i = nValue;i > 0;i--)
    {
    	for(j = nCount;j > 0;j--);
    }
    return;
}
void Init_UART1(void)
{
    U1CTL = 0X00;	   //將寄存器的內容清零
    U1CTL += CHAR;         //數據位為8bit
    
    U1TCTL = 0X00;	   //將寄存器的內容清零
    U1TCTL += SSEL1;	   //波特率發(fā)生器選擇SMCLK
    
    UBR0_1 = 0X45;	   //波特率為115200
    UBR1_1 = 0X00;
    UMCTL_1 = 0X00;	
    
    ME2 |= UTXE1 + URXE1;  //使能UART1的TXD和RXD
    IE2 |= URXIE1;	   //使能UART1的RX中斷
    IE2 |= UTXIE1;	   //使能UART1的TX中斷
    
    P3SEL |= BIT6;	   //設置P3.6為UART1的TXD
    P3SEL |= BIT7;	   //設置P3.7為UART1的RXD
    
    P3DIR |= BIT6;	   //P3.6為輸出管腳
    return;
}
void Init_CLK(void)
{
    unsigned int i;
    BCSCTL1 = 0X00;			//將寄存器的內容清零
					//XT2震蕩器開啟
					//LFTX1工作在低頻模式
					//ACLK的分頻因子為1
					
    do 
    {
	IFG1 &= ~OFIFG;                       // 清除OSCFault標志
	for (i = 0x20; i > 0; i--);                
    }
    while ((IFG1 & OFIFG) == OFIFG);      // 如果OSCFault =1   
					
    BCSCTL1 &= ~(XT2OFF + XTS);//open XT2, LFTX2 select low frequency 
    BCSCTL1 |= RSEL0 + RSEL1 + RSEL2; //DCO Rsel=7(Freq=3200k/25攝氏度）  
    BCSCTL1 |= 0x07;
    BCSCTL2 += SELM1;		//MCLK的時鐘源為TX2CLK，分頻因子為1
    BCSCTL2 += SELS;		//SMCLK的時鐘源為TX2CLK，分頻因子為1
    
}