331 lines
13 KiB
C
331 lines
13 KiB
C
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#include "armebs3.h" /* peripherals definitions */
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#include "mezza_lcd\mezza_lcd.h" /* LCD Mezza library */
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#include <tx_api.h> /* threadX def. header file */
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#include <stdlib.h> /* std lib definitions file */
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#include <stdio.h> /* standard IO functions */
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#include <tokenring.h> /* tokenring constants */
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/*--------------------------------------------------------------------------*/
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/* EXTERNAL DEFINED GLOBAL VARIABLES */
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/*--------------------------------------------------------------------------*/
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extern UINT8 gDebugSend;
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extern UINT8 gDebugAddress;
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extern UINT8 gDebugSapi;
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extern UINT8 gDebugSendCrcError;
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extern UINT8 gDebugReceiveCrcError;
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extern UINT8 gInBuffer[300];
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extern UINT8 MYADDRESS;
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extern TX_QUEUE gDebug_Q;
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extern TX_EVENT_FLAGS_GROUP gEvents_E;
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/****************************************************************************/
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/* Name : CheckRetCodeDebug */
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/*--------------------------------------------------------------------------*/
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/* Inputs : retCode, lineNumber, mode */
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/*--------------------------------------------------------------------------*/
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/* Function : - displays the error when an error happends */
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/****************************************************************************/
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void CheckRetCodeDebug(UINT32 retCode,UINT32 lineNumber,UINT8 mode)
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{
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if(retCode != 0) /* when error occurs */
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{
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Debug("In Debugger line : ",lineNumber); /* display line number */
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Debug("Error : ",retCode); /* with error number */
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if (mode == HALT) /* when mode is HALT */
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{
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while(1){} /* stays here forever */
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}
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}
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}
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/****************************************************************************/
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/* TaskName : DebugManager */
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/*--------------------------------------------------------------------------*/
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/* Function : - simulate a station with the tokenring interface */
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/****************************************************************************/
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void DebugManager(void)
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{
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HEADER msg;
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UINT8 *ptr;
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UINT8 *tokenPtr;
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INT32 retCode;
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UINT8 msgStr[]="Test Message from Debug !";
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UINT8 srcControl;
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UINT8 dstControl;
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UINT8 size;
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UINT8 checksum;
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UINT8 i;
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UINT8 lastDebugAddress;
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UINT8 statusByte;
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gDebugSend = 0;
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gDebugAddress = 6;
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gDebugSapi = 1;
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gDebugSendCrcError = 0;
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gDebugReceiveCrcError = 0;
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lastDebugAddress = gDebugAddress;
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/*------------------------------------------------------------------------*/
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while(1) /* forever loop */
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{
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/*----------------------------------------------------------------------*/
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/* TX_CALL >>>>>>>>>>>>>>>>> QUEUE READ */
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/*----------------------------------------------------------------------*/
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retCode = tx_queue_receive(
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&gDebug_Q,
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&msg,
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TX_WAIT_FOREVER);
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CheckRetCodeDebug(retCode,__LINE__,CONTINUE);
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ptr = msg.data.ptr;
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/*----------------------------------------------------------------------*/
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/* TOKEN RECEIVED */
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/*----------------------------------------------------------------------*/
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if(*(ptr+1) == TOKEN)
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{
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ptr[gDebugAddress+2] = (1 << gDebugSapi); /* update dbg SAPI */
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if(lastDebugAddress != gDebugAddress) /* if address changed */
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{
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ptr[lastDebugAddress+2] &= ~(1 << gDebugSapi); /* update last */
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lastDebugAddress = gDebugAddress; /* set new<->last */
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}
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/*--------------------------------------------------------------------*/
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/* WAIT TO SEND MSG */
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/*--------------------------------------------------------------------*/
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if(gDebugSend == 1)
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{
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gDebugSend = 0; /* stop send nxt time */
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tokenPtr = ptr;
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srcControl = (gDebugAddress << 3) + gDebugSapi;
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dstControl = (MYADDRESS << 3) + gDebugSapi;
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size = strlen(msgStr);
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*gInBuffer = 0x02;
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/*------------------------------------------------------------------*/
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/* MSG CREATION */
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/*------------------------------------------------------------------*/
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*(gInBuffer+1) = srcControl;
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*(gInBuffer+2) = dstControl;
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*(gInBuffer+3) = size;
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strcpy(gInBuffer+4,msgStr);
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*(gInBuffer+3+size) = 0x0D;
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checksum = 0;
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for(i=0;i<size+3;i++)
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checksum += *(gInBuffer+i+1);
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*(gInBuffer+size+4) = checksum << 2;
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*(gInBuffer+size+5) = 0x03;
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/*------------------------------------------------------------------*/
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if(gDebugSendCrcError == 1)
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{
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*(gInBuffer+size+4) += 4; /* simulate error CS */
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}
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/*------------------------------------------------------------------*/
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/* TX_CALL >>>>>>>>>>>>>>> EVENT SET */
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/*------------------------------------------------------------------*/
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retCode = tx_event_flags_set(
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&gEvents_E,
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RS232_FR_EVENT,
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TX_OR);
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CheckRetCodeDebug(retCode,__LINE__,CONTINUE);
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}
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/*--------------------------------------------------------------------*/
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/* NO MSG TO SEND */
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/*--------------------------------------------------------------------*/
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else /* token back */
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{
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for(i=0;i<19;i++)
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{
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gInBuffer[i] = *(ptr+i);
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}
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retCode = tx_byte_release((void*)ptr);
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CheckRetCodeDebug(retCode,__LINE__,CONTINUE);
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/*------------------------------------------------------------------*/
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/* TX_CALL >>>>>>>>>>>>>>> EVENT SET */
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/*------------------------------------------------------------------*/
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retCode = tx_event_flags_set(
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&gEvents_E,
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RS232_FR_EVENT,
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TX_OR);
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CheckRetCodeDebug(retCode,__LINE__,CONTINUE);
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}
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}
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/*----------------------------------------------------------------------*/
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/* DATABACK RECEIVED */
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/*----------------------------------------------------------------------*/
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else if (*(ptr+1)>>3 == gDebugAddress)
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{
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statusByte = *(ptr+*(ptr+3)+4);
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statusByte &= 0x03;
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/*--------------------------------------------------------------------*/
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switch(statusByte)
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{
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/*------------------------------------------------------------------*/
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/* RD = 1, ACK = 1 */
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/*------------------------------------------------------------------*/
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case 0x03: /* RD = 1, ACK = 1 */
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/*----------------------------------------------------------------*/
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/* TX_CALL >>>>>>>>>>>>> MEMORY RELEASE */
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/*----------------------------------------------------------------*/
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retCode = tx_byte_release((void*)ptr);
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for(i=0;i<19;i++)
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{
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gInBuffer[i] = *(tokenPtr+i);
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}
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/*----------------------------------------------------------------*/
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/* TX_CALL >>>>>>>>>>>>> MEMORY RELEASE */
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/*----------------------------------------------------------------*/
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retCode = tx_byte_release((void*)tokenPtr);
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CheckRetCodeDebug(retCode,__LINE__,CONTINUE);
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/*----------------------------------------------------------------*/
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/* TX_CALL >>>>>>>>>>>>> EVENT SET */
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/*----------------------------------------------------------------*/
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retCode = tx_event_flags_set(
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&gEvents_E,
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RS232_FR_EVENT,
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TX_OR);
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CheckRetCodeDebug(retCode,__LINE__,CONTINUE);
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break;
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/*------------------------------------------------------------------*/
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/* RD = 1, ACK = 0 */
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/*------------------------------------------------------------------*/
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case 0x02: /* RD = 1, ACK = 0 */
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/*----------------------------------------------------------------*/
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/* TX_CALL >>>>>>>>>>>>> MEMORY RELEASE */
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/*----------------------------------------------------------------*/
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retCode = tx_byte_release((void*)ptr);
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srcControl = (gDebugAddress << 3) + gDebugSapi;
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dstControl = (MYADDRESS << 3) + CHAT_SAPI;
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size = strlen(msgStr);
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*gInBuffer = 0x02;
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*(gInBuffer+1) = srcControl;
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*(gInBuffer+2) = dstControl;
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*(gInBuffer+3) = size;
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strcpy(gInBuffer+4,msgStr);
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*(gInBuffer+3+size) = 0x0D;
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checksum = 0;
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for(i=0;i<size+3;i++)
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checksum += *(gInBuffer+i+1);
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*(gInBuffer+size+4) = checksum << 2;
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*(gInBuffer+size+5) = 0x03;
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/*----------------------------------------------------------------*/
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if(gDebugSendCrcError == 1)
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{
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*(gInBuffer+size+4) += 4; /* simulate error CS */
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}
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/*----------------------------------------------------------------*/
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/* TX_CALL >>>>>>>>>>>>> EVENT SET */
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/*----------------------------------------------------------------*/
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retCode = tx_event_flags_set(
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&gEvents_E,
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RS232_FR_EVENT,
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TX_OR);
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CheckRetCodeDebug(retCode,__LINE__,CONTINUE);
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Debug("DBL>> MESSAGE ACK ERROR -> SEND MESSAGE AGAIN ",0);
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break;
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/*------------------------------------------------------------------*/
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/* RD = 0, ACK = x */
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/*------------------------------------------------------------------*/
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case 0x01: /* RD = 0, ACK = 1 */
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case 0x00: /* RD = 0, ACK = 0 */
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/*----------------------------------------------------------------*/
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/* TX_CALL >>>>>>>>>>>>> MEMORY RELEASE */
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/*----------------------------------------------------------------*/
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retCode = tx_byte_release((void*)ptr);
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for(i=0;i<19;i++)
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{
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gInBuffer[i] = *(tokenPtr+i);
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}
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/*----------------------------------------------------------------*/
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/* TX_CALL >>>>>>>>>>>>> MEMORY RELEASE */
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/*----------------------------------------------------------------*/
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retCode = tx_byte_release((void*)tokenPtr);
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CheckRetCodeDebug(retCode,__LINE__,CONTINUE);
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/*----------------------------------------------------------------*/
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/* TX_CALL >>>>>>>>>>>>> EVENT SET */
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/*----------------------------------------------------------------*/
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retCode = tx_event_flags_set(
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&gEvents_E,
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RS232_FR_EVENT,
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TX_OR);
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CheckRetCodeDebug(retCode,__LINE__,CONTINUE);
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Debug("DBL>> MESSAGE NOT READ -> SEND BACK TOKEN ",0);
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break;
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}
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}
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/*----------------------------------------------------------------------*/
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/* MESSAGE RECEIVED */
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/*----------------------------------------------------------------------*/
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else if (*(ptr+2)>>3 == gDebugAddress)
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{
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statusByte = *(ptr+*(ptr+3)+4);
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/*--------------------------------------------------------------------*/
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if((gDebugReceiveCrcError == 1) && /* pseudo error */
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((*(ptr+2) && 0x03) == gDebugSapi))
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{
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*(ptr+*(ptr+3)+4) |= 0x02; /* set RD bit */
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*(ptr+*(ptr+3)+4) &= 0xFE; /* clear ACK bit */
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Debug("DBL>> PSEUDO ACK ERROR ",0);
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}
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/*--------------------------------------------------------------------*/
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else if((*(ptr+2) && 0x03) == gDebugSapi) /* control is OK */
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{
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checksum = 0;
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for(i=0;i<*(ptr+3)+3;i++) /* calculate checksum */
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checksum += *(ptr+i+1);
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checksum = checksum << 2;
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if(checksum == (statusByte & 0xFC))
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{
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*(ptr+*(ptr+3)+4) = statusByte | 0x03; /* RD = 1, ACK = 1 */
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Debug("DBL>> ACK OK ",0);
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}
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else
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{
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*(ptr+*(ptr+3)+4) = statusByte | 0x02; /* RD = 1, ACK = 0 */
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Debug("DBL>> ACK ERROR ",0);
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}
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}
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/*--------------------------------------------------------------------*/
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else /* bad SAPI */
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{
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Debug("DBL>> BAD SAPI ",0);
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}
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for(i=0;i<*(ptr+3)+6;i++)
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{
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gInBuffer[i] = *(ptr+i);
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}
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/*--------------------------------------------------------------------*/
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/* TX_CALL >>>>>>>>>>>>>>> MEMORY RELEASE */
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/*--------------------------------------------------------------------*/
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retCode = tx_byte_release((void*)ptr);
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/*--------------------------------------------------------------------*/
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/* TX_CALL >>>>>>>>>>>>>>> EVENT SET */
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/*--------------------------------------------------------------------*/
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retCode = tx_event_flags_set(
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&gEvents_E,
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RS232_FR_EVENT,
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TX_OR);
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CheckRetCodeDebug(retCode,__LINE__,CONTINUE);
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}
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/*----------------------------------------------------------------------*/
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/* ANOTHER FRAME */
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/*----------------------------------------------------------------------*/
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else
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{
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for(i=0;i<*(ptr+3)+6;i++) /* copy frame */
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{
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gInBuffer[i] = *(ptr+i);
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}
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/*--------------------------------------------------------------------*/
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/* TX_CALL >>>>>>>>>>>>>>> MEMORY RELEASE */
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/*--------------------------------------------------------------------*/
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retCode = tx_byte_release((void*)ptr);
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/*--------------------------------------------------------------------*/
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/* TX_CALL >>>>>>>>>>>>>>> EVENT SET */
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/*--------------------------------------------------------------------*/
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retCode = tx_event_flags_set(
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&gEvents_E,
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RS232_FR_EVENT,
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TX_OR);
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CheckRetCodeDebug(retCode,__LINE__,CONTINUE);
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}
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}
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}
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