ALPS-004/WZYXHT_V1.12507260002.X/WZYXHT_V1.12507260002.X/Uart.c

#include <p33FJ64MC204.h>
#include <stdlib.h>
#include <math.h>
#include "UART.h"
#include "string.h"
#include "Instrument_EEPROM_Param.h"
#include "IO.h"
#include "command.h"
/**********************************************/
unsigned char g_ucCMD,g_ucUART1_flag,g_ucUART2_flag=0;    
unsigned int  g_uiUart1_No=0;          
unsigned char g_ucUart1_Send_Data[SEND_NUM],g_ucUart1_Receive_Data[RECEIVE_NUM];
unsigned char g_ucUart2_Send_Data[SEND_NUM],g_ucUart2_Receive_Data[RECEIVE_NUM];
unsigned char g_ucHeaderFlag1 = 0;      
unsigned char g_ucHeaderFlag2 = 0;

unsigned int  g_uiUart2_No=0;
unsigned int uiReceive1_Counter;

unsigned int  g_uiLth = 0,g_uiLth2 = 0;           
unsigned char g_ucCRC,g_ucCRC2;                 
unsigned long g_ulRSUM,g_ulRSUM2;              
unsigned int  g_uiFrmLth;                
unsigned char g_BUSY = 0,g_BUSY2 = 0,g_BUSY3=0,g_BUSY4=0;            



/*******************************************************************************
 * 函数名称：InitUart1
 *******************************************************************************/
void InitUart1(void)
{
     /****************************************************/       
    _TRISC6 = 0;  
    _TRISC8 = 1;   
    _RP22R = 0x03;  
    _U1RXR = 0x18;  
    U1MODEbits.STSEL = 0; 
    U1MODEbits.PDSEL = 0; 
    U1MODEbits.BRGH = 0; 
    U1MODEbits.ABAUD = 0; 
    U1MODEbits.LPBACK = 0; 
     U1BRG=259;  
    U1STAbits.UTXISEL0 = 1;
    U1STAbits.UTXISEL1 = 0;
    U1STAbits.URXISEL = 0;
    IEC0bits.U1TXIE = 0;
    IEC0bits.U1RXIE = 1;
    U1MODEbits.UARTEN = 1;
    U1STAbits.UTXEN = 1;
    IPC2bits.U1RXIP = 6;
}
/*******************************************************************************
 * 函数名称：InitUart2
 *******************************************************************************/
void InitUart2(void)
{
    _TRISB8 = 0;  
    _TRISB9 = 1;  
    _RP8R = 0x05;  
    _U2RXR = 0x09;  
    U2MODEbits.STSEL=0;       
    U2MODEbits.PDSEL=0;       
    U2MODEbits.BRGH=0;        
    U2MODEbits.ABAUD=0;       
    U2MODEbits.LPBACK=0;       
    U2BRG=259;			
    U2STAbits.UTXISEL0=1;	
    U2STAbits.UTXISEL1=0;
    U2STAbits.URXISEL=0;
    IEC1bits.U2TXIE=0;
    IEC1bits.U2RXIE=1;
    U2MODEbits.UARTEN=1;
    U2STAbits.UTXEN=1;
    IPC7bits.U2RXIP=7;
    IPC7bits.U2TXIP=7;
}
/*******************************************************************************
 * 函数名称：Uart1Send
 *******************************************************************************/
void UART1SEND(char data)             
{
     U1TXREG = data;   
     while(!IFS0bits.U1TXIF);
     IFS0bits.U1TXIF=0;       		
}
void UART2SEND(char data)          
{
     U2TXREG = data;     
     while(!IFS1bits.U2TXIF);
     IFS1bits.U2TXIF=0;       		
}
void RS1_Ack(unsigned int sendnum)          
{
    unsigned int i;
    for(i=0;i<sendnum;i++)
    {
        UART1SEND(g_ucUart1_Send_Data[i]);
    }
    memset(g_ucUart1_Send_Data,0,sendnum*sizeof(unsigned char));   

}
void RS2_Ack(unsigned int sendnum)        
{
    unsigned int i;
    for(i=0;i<sendnum;i++)
    {
        UART2SEND(g_ucUart2_Send_Data[i]);
    }
    memset(g_ucUart2_Send_Data,0,sendnum*sizeof(unsigned char));
}
/*******************************************************************************
 * 函数名称：CalculateSum
 *******************************************************************************/
unsigned long int CalculateSum(unsigned char *p,unsigned int num)
{
    unsigned int i=0;
    unsigned long int uiCheckSum=0;
    for(i = 0;i < num;i++)
    {
        uiCheckSum += *p;
        p++;
    }
    return uiCheckSum;
}
/*******************************************************************************
 * 函数名称：CalculateSum
 *******************************************************************************/
unsigned  int CalculateCharSum(unsigned char *p,unsigned char num)
{
    unsigned char i=0;
    unsigned  int uiCheckSum=0;
    for(i = 0;i < num;i ++)
    {
        uiCheckSum += *p;
        p++;
    }
    return uiCheckSum;
}
/*******************************************************************************
 * 函数名称：_U1RXInterrupt
 *******************************************************************************/
void  __attribute__((__interrupt__,no_auto_psv)) _U1RXInterrupt(void)
{ 
    IFS0bits.U1RXIF = 0;                                                        
    g_ucUart1_Receive_Data[g_uiUart1_No] = U1RXREG;                               
    if(g_BUSY == 1) return;
    if(g_ucHeaderFlag1 == 0)                                                      
    {
            if(g_ucUart1_Receive_Data[g_uiUart1_No] == FRAME_HEAD)               
            {
                g_ucHeaderFlag1 = 1;                                            
                g_ucUart1_Receive_Data[0] = FRAME_HEAD;                          
                g_uiUart1_No = 1;                                             
            }
            else                                                                     
            {
                g_BUSY = 0;                                                  
            }
    }
    else if(g_ucHeaderFlag1 == 1)                                         
    {
            g_uiUart1_No++;
    } 

    if(g_uiUart1_No >4)//(FRAME_LTHL_INDEX+1))                                                         
    {
            g_uiLth = g_ucUart1_Receive_Data[FRAME_LTHH_INDEX] ; 
            g_uiLth = (g_uiLth<<8) + g_ucUart1_Receive_Data[FRAME_LTHL_INDEX];   
            
            if(g_uiUart1_No == g_uiLth)                                            
            { 
                g_ulRSUM = CalculateCharSum(g_ucUart1_Receive_Data,g_uiLth-1);    
                g_ucCRC = (unsigned char)g_ulRSUM;//
                if(g_ucCRC == g_ucUart1_Receive_Data[g_uiLth-1])                  
                {
                    g_ucCMD = g_ucUart1_Receive_Data[FRAME_CMD_INDEX];             

                    g_ulRSUM = 0;                                                 
                    g_uiUart1_No = 0;                                              
                    g_ucHeaderFlag1 = 0;                                         
                    if(g_ucCMD==Command_Execution_Status||g_ucCMD==stop)
                    {
                       g_BUSY3 = 1;
                       g_BUSY = 1;                       
                    }
                    else
                    {
                    g_ucUART1_flag = 1;                                    
                    g_BUSY = 1; 
                    }
                }
                else
                {
                    memset(g_ucUart1_Receive_Data,0,g_uiLth*sizeof(unsigned char));
                    g_BUSY = 0;                                                    
                }              
            }
            else if(g_uiUart1_No >  g_uiLth)                                       
             {
                g_uiUart1_No = 0;                                               
                g_ucHeaderFlag1 = 0;                                           
                g_BUSY = 0;                                                    
             }
    }
}


/*******************************************************************************
 * 函数名称：_U2RXInterrupt
 *******************************************************************************/


void  __attribute__((__interrupt__,no_auto_psv)) _U2RXInterrupt(void)
{
    IFS1bits.U2RXIF = 0;                                                   
    g_ucUart2_Receive_Data[g_uiUart2_No] = U2RXREG;                         
    if(g_BUSY2 == 1) return;
    if(g_ucHeaderFlag2 == 0)                                               
    {
        if(g_ucUart2_Receive_Data[g_uiUart2_No] == FRAME_HEAD)          
        {
            g_ucHeaderFlag2 = 1;                                        
            g_ucUart2_Receive_Data[0] = FRAME_HEAD;                      
            g_uiUart2_No = 1;                                              
        }
        else                                                                     
        {
            g_BUSY2 = 0;                                                    
        }
    }
    else if(g_ucHeaderFlag2 == 1)                                          
    {
        g_uiUart2_No++;
    } 
    if(g_uiUart2_No >4)                                                          
        {
            g_uiLth2 = g_ucUart2_Receive_Data[FRAME_LTHH_INDEX] ; 
            g_uiLth2 = (g_uiLth2<<8) + g_ucUart2_Receive_Data[FRAME_LTHL_INDEX];    
            if(g_uiUart2_No == g_uiLth2)                                           
            { 
                g_ulRSUM2 = CalculateCharSum(g_ucUart2_Receive_Data,g_uiLth2-1);    
                g_ucCRC2 = (unsigned char)g_ulRSUM2;//
                if(g_ucCRC2 == g_ucUart2_Receive_Data[g_uiLth2-1])                 
                {
                    g_ucCMD = g_ucUart2_Receive_Data[FRAME_CMD_INDEX];            
                    g_ulRSUM2 = 0;                                                 
                    g_uiUart2_No = 0;                                            
                    g_ucHeaderFlag2 = 0;                                        
                    if(g_ucCMD==Command_Execution_Status)
                    {
                        g_BUSY4=1;
                        g_BUSY2 = 1;
                    }
                    else
                    {
                        g_ucUART2_flag = 1;                                      
                        g_BUSY2 = 1;
                    }
                    //处理代码中...暂不接受指令；
                }
                else
                {
                    memset(g_ucUart2_Receive_Data,0,g_uiLth2*sizeof(unsigned char)); 
                    g_BUSY2 = 0;                                                    
                }              
              }
                else if(g_uiUart2_No >  g_uiLth2)                                   
                {
                    g_uiUart2_No = 0;                                              
                    g_ucHeaderFlag2 = 0;                                          
                    g_BUSY2 = 0;                                             
                }
        }
}




static const unsigned short crc16tab[256]= 
{
     0x0000,0x1021,0x2042,0x3063,0x4084,0x50a5,0x60c6,0x70e7,
     0x8108,0x9129,0xa14a,0xb16b,0xc18c,0xd1ad,0xe1ce,0xf1ef,
     0x1231,0x0210,0x3273,0x2252,0x52b5,0x4294,0x72f7,0x62d6,
     0x9339,0x8318,0xb37b,0xa35a,0xd3bd,0xc39c,0xf3ff,0xe3de,
     0x2462,0x3443,0x0420,0x1401,0x64e6,0x74c7,0x44a4,0x5485,
     0xa56a,0xb54b,0x8528,0x9509,0xe5ee,0xf5cf,0xc5ac,0xd58d,
     0x3653,0x2672,0x1611,0x0630,0x76d7,0x66f6,0x5695,0x46b4,
     0xb75b,0xa77a,0x9719,0x8738,0xf7df,0xe7fe,0xd79d,0xc7bc,
     0x48c4,0x58e5,0x6886,0x78a7,0x0840,0x1861,0x2802,0x3823,
     0xc9cc,0xd9ed,0xe98e,0xf9af,0x8948,0x9969,0xa90a,0xb92b,
     0x5af5,0x4ad4,0x7ab7,0x6a96,0x1a71,0x0a50,0x3a33,0x2a12,
     0xdbfd,0xcbdc,0xfbbf,0xeb9e,0x9b79,0x8b58,0xbb3b,0xab1a,
     0x6ca6,0x7c87,0x4ce4,0x5cc5,0x2c22,0x3c03,0x0c60,0x1c41,
     0xedae,0xfd8f,0xcdec,0xddcd,0xad2a,0xbd0b,0x8d68,0x9d49,
     0x7e97,0x6eb6,0x5ed5,0x4ef4,0x3e13,0x2e32,0x1e51,0x0e70,
     0xff9f,0xefbe,0xdfdd,0xcffc,0xbf1b,0xaf3a,0x9f59,0x8f78,
     0x9188,0x81a9,0xb1ca,0xa1eb,0xd10c,0xc12d,0xf14e,0xe16f,
     0x1080,0x00a1,0x30c2,0x20e3,0x5004,0x4025,0x7046,0x6067,
     0x83b9,0x9398,0xa3fb,0xb3da,0xc33d,0xd31c,0xe37f,0xf35e,
     0x02b1,0x1290,0x22f3,0x32d2,0x4235,0x5214,0x6277,0x7256,
     0xb5ea,0xa5cb,0x95a8,0x8589,0xf56e,0xe54f,0xd52c,0xc50d,
     0x34e2,0x24c3,0x14a0,0x0481,0x7466,0x6447,0x5424,0x4405,
     0xa7db,0xb7fa,0x8799,0x97b8,0xe75f,0xf77e,0xc71d,0xd73c,
     0x26d3,0x36f2,0x0691,0x16b0,0x6657,0x7676,0x4615,0x5634,
     0xd94c,0xc96d,0xf90e,0xe92f,0x99c8,0x89e9,0xb98a,0xa9ab,
     0x5844,0x4865,0x7806,0x6827,0x18c0,0x08e1,0x3882,0x28a3,
     0xcb7d,0xdb5c,0xeb3f,0xfb1e,0x8bf9,0x9bd8,0xabbb,0xbb9a,
     0x4a75,0x5a54,0x6a37,0x7a16,0x0af1,0x1ad0,0x2ab3,0x3a92,
     0xfd2e,0xed0f,0xdd6c,0xcd4d,0xbdaa,0xad8b,0x9de8,0x8dc9,
     0x7c26,0x6c07,0x5c64,0x4c45,0x3ca2,0x2c83,0x1ce0,0x0cc1,
     0xef1f,0xff3e,0xcf5d,0xdf7c,0xaf9b,0xbfba,0x8fd9,0x9ff8,
     0x6e17,0x7e36,0x4e55,0x5e74,0x2e93,0x3eb2,0x0ed1,0x1ef0
};
 
unsigned short crc16_ccitt(unsigned char *buf, int len)
{
    register int counter;
    register unsigned short crc = 0;
    for( counter = 0; counter < len; counter++)
    crc = (crc<<8) ^ crc16tab[((crc>>8) ^ *(char *)buf++)&0x00FF];
    return crc;
}