uart.c

此程序是无传感器无刷电机控制程序（mege8）

// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// + Copyright (c) 04.2007 Holger Buss
// + only for non-profit use
// + www.MikroKopter.com
// + see the File "License.txt" for further Informations
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
#include <stdarg.h>
#include <string.h>
#include "main.h"
#include "uart.h"


#define FC_ADDRESS 1
#define NC_ADDRESS 2
#define MK3MAG_ADDRESS 3

unsigned char GetExternalControl = 0,DebugDisplayAnforderung1 = 0, DebugDisplayAnforderung = 0,DebugDataAnforderung = 0,GetVersionAnforderung = 0, GetPPMChannelAnforderung = 0;
unsigned char DisplayLine = 0;
unsigned volatile char SioTmp = 0;
unsigned volatile char SendeBuffer[MAX_SENDE_BUFF];
unsigned volatile char RxdBuffer[MAX_EMPFANGS_BUFF];
unsigned volatile char NMEABuffer[MAX_EMPFANGS_BUFF];
unsigned volatile char NeuerDatensatzEmpfangen = 0;
unsigned volatile char NeueKoordinateEmpfangen = 0;
unsigned volatile char UebertragungAbgeschlossen = 1;
unsigned volatile char CntCrcError = 0;
unsigned volatile char AnzahlEmpfangsBytes = 0;
unsigned char *pRxData = 0;
unsigned char RxDataLen = 0;
unsigned volatile char PC_DebugTimeout = 0;
unsigned volatile char PC_MotortestActive = 0;

unsigned char DebugTextAnforderung = 255;
unsigned char PcZugriff = 100;
unsigned char MotorTest[16];
unsigned char MeineSlaveAdresse = 1; // Flight-Ctrl
unsigned char ConfirmFrame;
struct str_DebugOut    DebugOut;
struct str_ExternControl  ExternControl;
struct str_VersionInfo VersionInfo;
struct str_WinkelOut WinkelOut;
struct str_Data3D Data3D;

int Debug_Timer,Kompass_Timer,Timer3D;
unsigned int DebugDataIntervall = 200, Intervall3D = 0;

const unsigned char ANALOG_TEXT[32][16] =
{
   //1234567890123456
    "AngleNick       ", //0
    "AngleRoll       ",
    "AccNick         ",
    "AccRoll         ",
    "GyroGier        ",
    "Hight Value     ", //5
    "AccZ            ",
    "Gas             ",
    "Compass Value   ",
    "Voltage         ",
    "Empfang         ", //10
    "Gyro Kompass    ",
    "Motor Front     ",
    "Motor Rear      ",
    "Motor Left      ",
    "Motor Right     ", //15
    "                ",
    "                ",
    "                ",
    "MK3Mag CalState ",
    "Servo           ", //20
    "                ",
    "                ",
    "                ",
    "                ",
    "                ", //25
    "                ",
    "Kalman_MaxDrift ",
    "                ",
    "Navi Serial Data",
    "GPS_Nick        ", //30
    "GPS_Roll        "
};



//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//++ Sende-Part der Daten?bertragung
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
SIGNAL(INT_VEC_TX)
{
 static unsigned int ptr = 0;
 unsigned char tmp_tx;
 if(!UebertragungAbgeschlossen)
  {
   ptr++;                    // die [0] wurde schon gesendet
   tmp_tx = SendeBuffer[ptr];
   if((tmp_tx == '\r') || (ptr == MAX_SENDE_BUFF))
    {
     ptr = 0;
     UebertragungAbgeschlossen = 1;
    }
   UDR = tmp_tx;
  }
  else ptr = 0;
}

//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//++ Empfangs-Part der Daten?bertragung, incl. CRC-Auswertung
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
SIGNAL(INT_VEC_RX)
{
 static unsigned int crc;
 static unsigned char crc1,crc2,buf_ptr;
 static unsigned char UartState = 0;
 unsigned char CrcOkay = 0;

 SioTmp = UDR;
 if(buf_ptr >= MAX_EMPFANGS_BUFF)    UartState = 0;
 if(SioTmp == '\r' && UartState == 2)
  {
   UartState = 0;
   crc -= RxdBuffer[buf_ptr-2];
   crc -= RxdBuffer[buf_ptr-1];
   crc %= 4096;
   crc1 = '=' + crc / 64;
   crc2 = '=' + crc % 64;
   CrcOkay = 0;
   if((crc1 == RxdBuffer[buf_ptr-2]) && (crc2 == RxdBuffer[buf_ptr-1])) CrcOkay = 1; else { CrcOkay = 0; CntCrcError++;};
   if(!NeuerDatensatzEmpfangen && CrcOkay) // Datensatz schon verarbeitet
    {
     NeuerDatensatzEmpfangen = 1;
         AnzahlEmpfangsBytes = buf_ptr + 1;
     RxdBuffer[buf_ptr] = '\r';
         if(RxdBuffer[2] == 'R') wdt_enable(WDTO_250MS); // Reset-Commando
        }
  }
  else
  switch(UartState)
  {
   case 0:
          if(SioTmp == '#' && !NeuerDatensatzEmpfangen) UartState = 1;  // Startzeichen und Daten schon verarbeitet
                  buf_ptr = 0;
                  RxdBuffer[buf_ptr++] = SioTmp;
                  crc = SioTmp;
          break;
   case 1: // Adresse auswerten
                  UartState++;
                  RxdBuffer[buf_ptr++] = SioTmp;
                  crc += SioTmp;
                  break;
   case 2: //  Eingangsdaten sammeln
                  RxdBuffer[buf_ptr] = SioTmp;
                  if(buf_ptr < MAX_EMPFANGS_BUFF) buf_ptr++;
                  else UartState = 0;
                  crc += SioTmp;
                  break;
   default:
          UartState = 0;
          break;
  }
}


// --------------------------------------------------------------------------
void AddCRC(unsigned int wieviele)
{
 unsigned int tmpCRC = 0,i;
 for(i = 0; i < wieviele;i++)
  {
   tmpCRC += SendeBuffer[i];
  }
   tmpCRC %= 4096;
   SendeBuffer[i++] = '=' + tmpCRC / 64;
   SendeBuffer[i++] = '=' + tmpCRC % 64;
   SendeBuffer[i++] = '\r';
  UebertragungAbgeschlossen = 0;
  UDR = SendeBuffer[0];
}



// --------------------------------------------------------------------------
void SendOutData(unsigned char cmd,unsigned char address, unsigned char BufferAnzahl, ...) //unsigned char *snd, unsigned char len)
{
 va_list ap;
 unsigned int pt = 0;
 unsigned char a,b,c;
 unsigned char ptr = 0;

 unsigned char *snd = 0;
 int len = 0;

 SendeBuffer[pt++] = '#';                               // Startzeichen
 SendeBuffer[pt++] = 'a' + address;             // Adresse (a=0; b=1,...)
 SendeBuffer[pt++] = cmd;                               // Commando

 va_start(ap, BufferAnzahl);
 if(BufferAnzahl)
 {
                snd = va_arg(ap, unsigned char*);
                len = va_arg(ap, int);
                ptr = 0;
                BufferAnzahl--;
 }
 while(len)
  {
        if(len)
        {
           a = snd[ptr++];
           len--;
           if((!len) && BufferAnzahl)
                {
                        snd = va_arg(ap, unsigned char*);
                        len = va_arg(ap, int);
                        ptr = 0;
                        BufferAnzahl--;
                }
        }
        else a = 0;
        if(len)
        {
                b = snd[ptr++];
                len--;
                if((!len) && BufferAnzahl)
                {
                        snd = va_arg(ap, unsigned char*);
                        len = va_arg(ap, int);
                        ptr = 0;
                        BufferAnzahl--;
                }
        }
        else b = 0;
        if(len)
        {
                c = snd[ptr++];
                len--;
                if((!len) && BufferAnzahl)
                {
                        snd = va_arg(ap, unsigned char*);
                        len = va_arg(ap, int);
                        ptr = 0;
                        BufferAnzahl--;
                }
        }
        else c = 0;
   SendeBuffer[pt++] = '=' + (a >> 2);
   SendeBuffer[pt++] = '=' + (((a & 0x03) << 4) | ((b & 0xf0) >> 4));
   SendeBuffer[pt++] = '=' + (((b & 0x0f) << 2) | ((c & 0xc0) >> 6));
   SendeBuffer[pt++] = '=' + ( c & 0x3f);
  }
 va_end(ap);
 AddCRC(pt);
}


// --------------------------------------------------------------------------
void Decode64(void)  // die daten werden im rx buffer dekodiert, das geht nur, weil aus 4 byte immer 3 gemacht werden.
{
 unsigned char a,b,c,d;
 unsigned char x,y,z;
 unsigned char ptrIn = 3; // start at begin of data block
 unsigned char ptrOut = 3;
 unsigned char len = AnzahlEmpfangsBytes - 6; // von der Gesamtbytezahl eines Frames gehen 3 Bytes des Headers  ('#',Addr, Cmd) und 3 Bytes des Footers (CRC1, CRC2, '\r') ab.

 while(len)
  {
   a = RxdBuffer[ptrIn++] - '=';
   b = RxdBuffer[ptrIn++] - '=';
   c = RxdBuffer[ptrIn++] - '=';
   d = RxdBuffer[ptrIn++] - '=';

   x = (a << 2) | (b >> 4);
   y = ((b & 0x0f) << 4) | (c >> 2);
   z = ((c & 0x03) << 6) | d;

   if(len--) RxdBuffer[ptrOut++] = x; else break;
   if(len--) RxdBuffer[ptrOut++] = y; else break;
   if(len--) RxdBuffer[ptrOut++] = z;   else break;
  }
        pRxData = (unsigned char*)&RxdBuffer[3]; // decodierte Daten beginnen beim 4. Byte
        RxDataLen = ptrOut - 3;  // wie viele Bytes wurden dekodiert?

}