標(biāo)題: freemodbus-1.5版源碼分享 [打印本頁]
作者: liuhanbao    時(shí)間: 2018-10-17 11:57
標(biāo)題: freemodbus-1.5版源碼分享
freemodbus-1.5版分享一下


單片機(jī)源程序如下:
  1. /*
  2. * FreeModbus Libary: MSP430 Demo Application
  3. * Copyright (C) 2006 Christian Walter <wolti@sil.at>
  4. *
  5. * This program is free software; you can redistribute it and/or modify
  6. * it under the terms of the GNU General Public License as published by
  7. * the Free Software Foundation; either version 2 of the License, or
  8. * (at your option) any later version.
  9. *
  10. * This program is distributed in the hope that it will be useful,
  11. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13. * GNU General Public License for more details.
  14. *
  15. * You should have received a copy of the GNU General Public License
  16. * along with this program; if not, write to the Free Software
  17. * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  18. *
  19. * File: $Id: demo.c,v 1.3 2006/11/19 15:22:40 wolti Exp $
  20. */

  22. /* ----------------------- Platform includes --------------------------------*/
  23. #include "port.h"
  24. #include "dco.h"

  26. /* ----------------------- Modbus includes ----------------------------------*/
  27. #include "mb.h"
  28. #include "mbport.h"

  30. /* ----------------------- Defines ------------------------------------------*/
  31. #define REG_INPUT_START   1000
  32. #define REG_INPUT_NREGS   4
  33. #define REG_HOLDING_START 1000
  34. #define REG_HOLDING_NREGS 130

  36. /* ----------------------- Static variables ---------------------------------*/
  37. static USHORT   usRegInputStart = REG_INPUT_START;
  38. static USHORT   usRegInputBuf[REG_INPUT_NREGS];
  39. static USHORT   usRegHoldingStart = REG_HOLDING_START;
  40. static USHORT   usRegHoldingBuf[REG_HOLDING_NREGS];

  42. /* ----------------------- Start implementation -----------------------------*/
  43. int
  44. main( void )
  45. {
  46.     eMBErrorCode    eStatus;
  47.     volatile USHORT usACLKCnt;

  49.     /* Stop Watchdog Timer. */
  50.     WDTCTL = WDTPW + WDTHOLD;

  52.     /* Delay for ACLK startup. */
  53.     for( usACLKCnt = 0xFFFF; usACLKCnt != 0; usACLKCnt-- );
  54.     if( cTISetDCO( TI_DCO_4MHZ ) == TI_DCO_NO_ERROR )
  55.     {
  56.         _EINT(  );

  58.         /* Initialize Protocol Stack. */
  59.         if( ( eStatus = eMBInit( MB_RTU, 0x0A, 0, 38400, MB_PAR_EVEN ) ) != MB_ENOERR )
  60.         {
  61.         }
  62.         /* Enable the Modbus Protocol Stack. */
  63.         else if( ( eStatus = eMBEnable(  ) ) != MB_ENOERR )
  64.         {
  65.         }
  66.         else
  67.         {
  68.             for( ;; )
  69.             {
  70.                 ( void )eMBPoll(  );

  72.                 /* Here we simply count the number of poll cycles. */
  73.                 usRegInputBuf[0]++;
  74.             }
  75.         }
  76.     }
  77.     for( ;; );
  78. }

  80. eMBErrorCode
  81. eMBRegInputCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNRegs )
  82. {
  83.     eMBErrorCode    eStatus = MB_ENOERR;
  84.     int             iRegIndex;

  86.     if( ( usAddress >= REG_INPUT_START )
  87.         && ( usAddress + usNRegs <= REG_INPUT_START + REG_INPUT_NREGS ) )
  88.     {
  89.         iRegIndex = ( int )( usAddress - usRegInputStart );
  90.         while( usNRegs > 0 )
  91.         {
  92.             *pucRegBuffer++ = ( unsigned char )( usRegInputBuf[iRegIndex] >> 8 );
  93.             *pucRegBuffer++ = ( unsigned char )( usRegInputBuf[iRegIndex] & 0xFF );
  94.             iRegIndex++;
  95.             usNRegs--;
  96.         }
  97.     }
  98.     else
  99.     {
  100.         eStatus = MB_ENOREG;
  101.     }

  103.     return eStatus;
  104. }

  106. eMBErrorCode
  107. eMBRegHoldingCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNRegs, eMBRegisterMode eMode )
  108. {
  109.     eMBErrorCode    eStatus = MB_ENOERR;
  110.     int             iRegIndex;

  112.     if( ( usAddress >= REG_HOLDING_START ) &&
  113.         ( usAddress + usNRegs <= REG_HOLDING_START + REG_HOLDING_NREGS ) )
  114.     {
  115.         iRegIndex = ( int )( usAddress - usRegHoldingStart );
  116.         switch ( eMode )
  117.         {
  118.             /* Pass current register values to the protocol stack. */
  119.         case MB_REG_READ:
  120.             while( usNRegs > 0 )
  121.             {
  122.                 *pucRegBuffer++ = ( unsigned char )( usRegHoldingBuf[iRegIndex] >> 8 );
  123.                 *pucRegBuffer++ = ( unsigned char )( usRegHoldingBuf[iRegIndex] & 0xFF );
  124.                 iRegIndex++;
  125.                 usNRegs--;
  126.             }
  127.             break;

  129.             /* Update current register values with new values from the
  130.              * protocol stack. */
  131.         case MB_REG_WRITE:
  132.             while( usNRegs > 0 )
  133.             {
  134.                 usRegHoldingBuf[iRegIndex] = *pucRegBuffer++ << 8;
  135.                 usRegHoldingBuf[iRegIndex] |= *pucRegBuffer++;
  136.                 iRegIndex++;
  137.                 usNRegs--;
  138.             }
  139.         }
  140. ……………………

  142. …………限于本文篇幅 余下代碼請從51黑下載附件…………
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所有資料51hei提供下載:
freemodbus-v1.5官網(wǎng)支持stm32.zip (4.16 MB, 下載次數(shù): 143)


作者: prettytank    時(shí)間: 2020-4-21 19:05
感謝分享，很棒



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