#include  <msp430x14x.h>
#include  <math.h>

#define  LSB          0x00           //除數鎖存器低位
#define  MSB          0x04           //除數鎖存器高位

#define  RHR          0x00           //16C554寄存器選擇,P1.2-p1.4與A0-A2相連
#define  THR          0x00
#define  IER          0x04
#define  EFR          0x08
#define  FCR          0x08
#define  ISR          0x08
#define  LCR          0x0c
#define  MCR          0x10
#define  LSR          0x14
#define  MSR          0x18

#define  WRITE_EN     0x02            //寫信號選擇,p1.1
#define  READ_EN      0x01            //讀信號選擇,p1.0

#define  CSA          0x0e0           //A口的片選信號,p1.5-p1.7
#define  CSB          0x0c0           //B口的片選信號
#define  CSC          0x0a0
#define  CSD          0x80

#define    num1 20
#define    num2 18
#define    num3 12
#define    num4 3
#define    num5 3
#define    num6 5

unsigned char M_com_initf[num1]  = {'a','t','b','0','e','0','q','1','p','s','0','=','1','&','y','1','&','w','1',13};    //q1狀態碼不送回終端機，&y1自動載入預存第1組參數值，&w1將現行參數存入第1組存儲器，s0=1表示自動接聽，最后一個是回車,modem的初始化命令

unsigned char M_com_retry[num4]  = {'a','/',13};                           //重撥命令
unsigned char M_com_escape[num5] = {'+','+','+'};                          //數據模式跳到指令模式
unsigned char M_com_end[num6]    = {'a','t','h','0',13};                   //掛機命令

#define con_port        P1OUT                //16c554的控制端口
#define con_port_dir    P1DIR                //控制端口的方向選擇
#define data_out_port   P4OUT                //數據端口輸出
#define data_in_port    P4IN                 //數據端口輸入
#define data_port_dir   P4DIR                //數據端口的方向選擇

#define con_leisure     0x0e3                //p1口為16c554控制信號，讀寫信號禁止(0:1)，A0-A2為000(2:3:4)，片選為一個無用的端口(5:6:7)
#define interrupt_edge  P2IES                // Port 2 Interrupt Edge Select 
#define interrupt_en    P2IE                 // Port 2 Interrupt Enable 
#define interrupt_flag  P2IFG                //中斷標志

#define st16c554_mhz    1.8432               //16c554外接的晶振頻率，單位（MHZ）
#define dl_554          (st16c554_mhz*1000000/16)                 //分頻系數計算的中間常量

#define  data_maxa        23                                      //一個數據包的最大字節數
#define  buf_len_554     1*data_maxa                             //數組的長度，3表示可以存3個數據包
unsigned char Rx_flag_554[4];                                     //Rx_flag_554表示接收到的數據包的個數
unsigned char Rx_out_554[4];                                      //緩沖數組的讀數據指針

extern unsigned char PSTN_num[16];
extern unsigned char rxdata[6][25];
extern unsigned char port554_r;
void low_power(void);
//extern void command_oper(unsigned char uartn);
//extern void digit_sensor(unsigned char uartn);

//A口
unsigned char Rx_in_554a;                                         //接收緩沖數組的存數據指針
unsigned char Rx_full_554a;                                       //接收數據滿
unsigned char Rx_554a_start;                                      //Rx_554a_start表示開始接收有效的數據,
unsigned char data_num_554a;                                      //接收到的數據的字節數
unsigned char checksuma;                                          //校驗和
unsigned char rx_temp1_554a,rx_temp2_554a;                        //接收數據的臨時存儲單元

//B口
#define  data_maxb        23
unsigned char Rx_in_554b;
unsigned char Rx_full_554b;                                       //接收數據滿
unsigned char Rx_554b_start;
unsigned char data_num_554b;
unsigned char checksumb;                                          //校驗和
unsigned char rx_temp1_554b,rx_temp2_554b;

//C口
#define  data_maxc        23
unsigned char Rx_in_554c;
unsigned char Rx_full_554c;
unsigned char Rx_554c_start;
unsigned char data_num_554c;
unsigned char checksumc;                                          //校驗和
unsigned char rx_temp1_554c,rx_temp2_554c,rx_temp3_554c;

//D口       ,連接7字節協議數字傳感器
#define  data_maxd        7
unsigned char Rx_in_554d;
unsigned char Rx_full_554d;
unsigned char Rx_554d_start;
unsigned char data_num_554d;
unsigned char checksumd;                                          //校驗和
unsigned char rx_temp1_554d,rx_temp2_554d;

unsigned char DCD_flag,CTS_flag;                                  //C口的載波信號和清除發送信號的標志





/****************************************************
*
*    名稱：delayus()
*    功能：延時時間＝ (5*i+5)*指令周期(us)
*    入口參數：i 為循環次數
*
****************************************************/

void delayus(unsigned int i)
{
    while(--i);
}

/****************************************************
*
*    名稱：delayms()
*    功能：延時時間＝ i(ms)
*    入口參數：i 為循環次數
*
****************************************************/

void delayms(unsigned int i)
{
    while(--i)
    {
        delayus(200);
    }
}

void delays(unsigned int i)
{
    while(--i)
    {
        delayms(1000);
    }
}

/****************************************************
*
*    名稱：init_16c554a()
*    功能：對16c554的a口初始化
*    入口參數：select_554IO是16C554的端口選擇：0－A口，1－B口，3－D口；bps是波特率
*    出口：無
*
****************************************************/

void init_16c554port(unsigned char select_554IO,unsigned int bps)
{
    unsigned int divisor;            //分頻系數
    unsigned char CS;                //片選信號
    if(select_554IO == 0)            //判斷是選擇哪個口，然后把該口的片選信號給CS
        CS = CSA;
    else if(select_554IO == 1)
             CS = CSB;
         else if(select_554IO == 3)
                  CS = CSD;
              else return;
    divisor = dl_554/bps;
    con_port_dir = 0x0ff;            //16c554控制信號為輸出
    con_port = con_leisure;          //讀寫信號禁止，A0-A2為000，片選為一個無用的端口
    data_port_dir = 0x0ff;           //16c554數據信號為輸出
    
    con_port |= LCR;                 //選中16c554的LCR寄存器
    con_port &= ~CS;                 //片選端口
    con_port ^= WRITE_EN;            //選中寄存器的寫
    data_out_port = 0x83;            //使能波特率設置
    con_port = con_leisure;
    
    con_port |= LSB;                 //選中16C554波特率設置寄存器的低位
    con_port &= ~CS;
    con_port ^= WRITE_EN;            //選中寄存器的寫
    data_out_port = divisor%256;     //設置通訊波特率為9600
    con_port = con_leisure;
    
    con_port |= MSB;                 //選中16C554波特率設置寄存器的高位
    con_port &= ~CS;
    con_port ^= WRITE_EN;            //選中寄存器的寫
    data_out_port = divisor/256;
    con_port = con_leisure;
    
    con_port |= FCR;                 //FCR寄存器
    con_port &= ~CS;
    con_port ^= WRITE_EN;            //選中寄存器的寫
    data_out_port = 0x06;            //FIFO模式
    con_port = con_leisure;
    
    con_port |= LCR;                 //LCR
    con_port &= ~CS;
    con_port ^= WRITE_EN;             
    data_out_port = 0x03;            //8 bit_data, 1 bit_stop, no parity
    con_port = con_leisure;
    
    con_port |= IER;
    con_port &= ~CS;
    con_port ^= WRITE_EN;            //IER
    data_out_port = 0x11;            //接收中斷   ,IER-bit4=1,sllep
    con_port = con_leisure;
    
    con_port |= MCR;                 //MCR
    con_port &= ~CS;
    con_port ^= WRITE_EN;
    data_out_port = 0x08;            //禁止回寫模式
    con_port = con_leisure;
    low_power();
}

/****************************************************
*
*    名稱：init_16c554c()
*    功能：對16c554的c口初始化
*    入口參數：bps 波特率
*    出口：無
*
****************************************************/

void init_16c554c(unsigned int bps)
{
    unsigned int divisor;            //分頻系數
    divisor = dl_554/bps;
    
    con_port_dir = 0x0ff;            //16c554控制信號為輸出
    con_port = con_leisure;          //讀寫信號禁止，A0-A2為000，片選為一個無用的斷口
    data_port_dir = 0x0ff;           //16c554數據信號為輸出
    
    con_port |= LCR;                //選中16c554的LCR寄存器
    con_port &= ~CSC;               //片選中C口
    con_port ^= WRITE_EN;           //選中寄存器的寫
    data_out_port = 0x83;           //使能波特率設置
    con_port = con_leisure;
    
    con_port |= LSB;                //選中16C554波特率設置寄存器的低位
    con_port &= ~CSC;               //片選C口
    con_port ^= WRITE_EN;           //選中寄存器的寫
    data_out_port = divisor%256;    //設置通訊波特率
    con_port = con_leisure;
    
    con_port |= MSB;               //選中16C554波特率設置寄存器的高位
    con_port &= ~CSC;              //片選C口
    con_port ^= WRITE_EN;          //選中寄存器的寫
    data_out_port = divisor/256;
    con_port = con_leisure;
    
    con_port |= FCR;               //FCR寄存器
    con_port &= ~CSC;              //片選C口
    con_port ^= WRITE_EN;          //選中寄存器的寫
    data_out_port = 0x06;          //FIFO模式
    con_port = con_leisure;
    
    con_port |= LCR;               //LCR
    con_port &= ~CSC;
    con_port ^= WRITE_EN;             
    data_out_port = 0x03;          //8 bit_data, 1 bit_stop, no parity
    con_port = con_leisure;
    
    con_port |= IER;
    con_port &= ~CSC;
    con_port ^= WRITE_EN;          //IER
    data_out_port = 0x19;          // modem中斷和接收中斷,, ,IER-bit4--sleep
    con_port = con_leisure;
    
    con_port |= MCR;               //MCR
    con_port &= ~CSC;
    con_port ^= WRITE_EN;
    data_out_port = 0x0b;          //DTR~ = 0, RTS~ = 0
    con_port = con_leisure;
    low_power();
}

/************************************************************
*
* 名稱:     send_data_554
* 功能:     發送多個字節
* 調用:     none
* 輸入:     Txdata[] 為要發送的數組；data_len為發送的字節數；
*           select_IO為端口選擇:0~3對應A口~D口
* 返回值:   none
*
************************************************************/

void send_data_554(unsigned char Txdata[],unsigned char data_len,unsigned char select_IO)
{
    unsigned char i,j;
    
    data_port_dir = 0x0ff;                      //數據信號為輸出
    con_port |= THR;                            //選中發送寄存器
    
    if(select_IO == 0 )                         //判斷選中的端口
        con_port &= ~CSA;                       //選中A口
    else if(select_IO == 1)
             con_port &= ~CSB;
         else if(select_IO == 2)
                  con_port &=~CSC;
              else if(select_IO == 3)
                       con_port &= ~CSD;
                   else return;

    for(i = 0; i < data_len; i++)
    {
        con_port ^= WRITE_EN;                   //寫操作使能
        data_out_port = Txdata[i];              //發送數據
        con_port |= WRITE_EN;                   //關閉寫功能
        for(j = 0; j < 110; j++);               //發送數據延時
    }
    
    con_port = con_leisure;                     //控制端口設置為空閑
}

void send_data_554byte(unsigned char Txdat,unsigned char select_IO)
{
    unsigned char j;
    
    data_port_dir = 0x0ff;                      //數據信號為輸出
    con_port |= THR;                            //選中發送寄存器
    
    if(select_IO == 0 )                         //判斷選中的端口
        con_port &= ~CSA;                       //選中A口
    else if(select_IO == 1)
             con_port &= ~CSB;
         else if(select_IO == 2)
                  con_port &=~CSC;
              else if(select_IO == 3)
                       con_port &= ~CSD;
                   else return;


        con_port ^= WRITE_EN;                   //寫操作使能
        data_out_port = Txdat;              //發送數據