229 lines
6.7 KiB
C
229 lines
6.7 KiB
C
/*****************************************************************************
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*
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* MSO Corporation
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*
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* File : modbus.c
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* Compiler : IAR C 5.30C Kickstart
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* Revision : $Revision: 1.0 $
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* Date : $Date: 2010 / 07 / 16
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* Updated by : $Author: Jongkwang Woo
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*
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* Support mail : spirit0305@naver.com
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*
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* Description : MODBUS routines
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*
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****************************************************************************/
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#define _MODBUS_
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#include <includes.h>
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#include "modbus.h"
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#include "device_param.h"
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#include "malloc.h"
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#include "temp.h"
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#include "asutil.h"
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#include "brtc.h"
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const u8 auchCRCHi[] =
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{
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0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,
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0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
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0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01,
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0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
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0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81,
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0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,
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0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01,
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0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
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0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,
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0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
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0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01,
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0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
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0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,
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0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
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0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01,
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0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
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0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,0x40
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};
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const u8 auchCRCLo[] =
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{
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0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06, 0x07, 0xC7, 0x05, 0xC5, 0xC4,
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0x04, 0xCC, 0x0C, 0x0D, 0xCD, 0x0F, 0xCF, 0xCE, 0x0E, 0x0A, 0xCA, 0xCB, 0x0B, 0xC9, 0x09,
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0x08, 0xC8, 0xD8, 0x18, 0x19, 0xD9, 0x1B, 0xDB, 0xDA, 0x1A, 0x1E, 0xDE, 0xDF, 0x1F, 0xDD,
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0x1D, 0x1C, 0xDC, 0x14, 0xD4, 0xD5, 0x15, 0xD7, 0x17, 0x16, 0xD6, 0xD2, 0x12, 0x13, 0xD3,
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0x11, 0xD1, 0xD0, 0x10, 0xF0, 0x30, 0x31, 0xF1, 0x33, 0xF3, 0xF2, 0x32, 0x36, 0xF6, 0xF7,
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0x37, 0xF5, 0x35, 0x34, 0xF4, 0x3C, 0xFC, 0xFD, 0x3D, 0xFF, 0x3F, 0x3E, 0xFE, 0xFA, 0x3A,
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0x3B, 0xFB, 0x39, 0xF9, 0xF8, 0x38, 0x28, 0xE8, 0xE9, 0x29, 0xEB, 0x2B, 0x2A, 0xEA, 0xEE,
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0x2E, 0x2F, 0xEF, 0x2D, 0xED, 0xEC, 0x2C, 0xE4, 0x24, 0x25, 0xE5, 0x27, 0xE7, 0xE6, 0x26,
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0x22, 0xE2, 0xE3, 0x23, 0xE1, 0x21, 0x20, 0xE0, 0xA0, 0x60, 0x61, 0xA1, 0x63, 0xA3, 0xA2,
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0x62, 0x66, 0xA6, 0xA7, 0x67, 0xA5, 0x65, 0x64, 0xA4, 0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F,
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0x6E, 0xAE, 0xAA, 0x6A, 0x6B, 0xAB, 0x69, 0xA9, 0xA8, 0x68, 0x78, 0xB8, 0xB9, 0x79, 0xBB,
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0x7B, 0x7A, 0xBA, 0xBE, 0x7E, 0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x7C, 0xB4, 0x74, 0x75, 0xB5,
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0x77, 0xB7, 0xB6, 0x76, 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71, 0x70, 0xB0, 0x50, 0x90, 0x91,
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0x51, 0x93, 0x53, 0x52, 0x92, 0x96, 0x56, 0x57, 0x97, 0x55, 0x95, 0x94, 0x54, 0x9C, 0x5C,
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0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E, 0x5A, 0x9A, 0x9B, 0x5B, 0x99, 0x59, 0x58, 0x98, 0x88,
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0x48, 0x49, 0x89, 0x4B, 0x8B, 0x8A, 0x4A, 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C,
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0x44, 0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86, 0x82, 0x42, 0x43, 0x83, 0x41, 0x81, 0x80,0x40
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};
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void GetCRC(u8 *pby, u16 nSize, u8 *byFirstReturn, u8 *bySecondReturn)
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{
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u16 uIndex, i;
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u16 crc;
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u8 uchCRCHi = 0xff;
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u8 uchCRCLo = 0xff;
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for (i = 0; i < nSize; i++)
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{
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uIndex = uchCRCHi ^ pby[i];
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uchCRCHi = uchCRCLo ^ auchCRCHi[uIndex];
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uchCRCLo = auchCRCLo[uIndex];
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}
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crc = (uchCRCHi << 8) | uchCRCLo;
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*byFirstReturn = crc / 256;
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*bySecondReturn = crc % 256;
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}
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u8 ModBusPacketCheck(u8 *rdata, u16 len, u8 addr)
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{
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u8 crch, crcl;
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u8 result = false;
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u16 clen, bytecount;
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if (rdata != NULL)
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{
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if ((rdata[0] == addr)||(rdata[0] == 0xFF))
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{
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switch (rdata[1])
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{
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case READ_HOLDING_REG:
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if (len == 8)
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{
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GetCRC(rdata, len - 2, &crch, &crcl);
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if ((crch == rdata[len - 2])&&(crcl == rdata[len - 1])) result = true;
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}
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break;
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case PRESET_MULTI_REG:
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clen = (rdata[4] * 256) + rdata[5];
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bytecount = rdata[6];
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if ((clen * 2) == bytecount)
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{
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if ((bytecount + 9) == len)
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{
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GetCRC(rdata, len - 2, &crch, &crcl);
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if ((crch == rdata[len - 2])&&(crcl == rdata[len - 1])) result = true;
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}
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}
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break;
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}
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}
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}
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return result;
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}
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s16 ByteToWord(u8 *bytes, u8 opt)
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{
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s16 result = 0;
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if (opt == true)
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result = (bytes[0] << 8) | bytes[1];
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else
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result = (bytes[1] << 8) | bytes[0];
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return result;
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}
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u8* ModBusReadRegister(u8 *rdata, u16 len, u16 *wlen)
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{
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u8 *result = NULL;
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u16 saddr;
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u16 reg_len, tlen, i;
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u16 reg_buff;
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u8 crch, crcl;
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PModBusReadRegisterReq ReadReq;
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ReadReq = (PModBusReadRegisterReq)rdata;
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saddr = reverse16(ReadReq->start_addr);
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reg_len = reverse16(ReadReq->number_of_data);
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tlen = (reg_len * 2) + 3 + 2;
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result = mymalloc(tlen);
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if (result != NULL)
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{
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result[0] = ReadReq->device_addr;
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result[1] = READ_HOLDING_REG;
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result[2] = reg_len * 2;
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for (i = 0; i < reg_len; i++)
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{
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reg_buff = GetRegister(saddr + i);
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result[3 + (i * 2)] = (reg_buff >> 8);
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result[3 + (i * 2) + 1] = (reg_buff & 0x00ff);
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}
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GetCRC(result, tlen - 2, &crch, &crcl);
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result[tlen - 2] = crch;
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result[tlen - 1] = crcl;
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*wlen = tlen;
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}
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return result;
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}
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u8* ModBusWriteRegister(u8 *rdata, u16 len, u16 *wlen)
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{
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u8 *result = NULL;
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u16 saddr;
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u16 reg_len, tlen, i, j;
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u16 reg_buff;
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u8 crch, crcl;
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saddr = ByteToWord(&rdata[2], true);
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reg_len = ByteToWord(&rdata[4], true);
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j = 7;
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for (i = 0; i < reg_len; i++)
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{
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reg_buff = ByteToWord(&rdata[j], true);
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SetRegister(saddr + i, reg_buff);
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j += 2;
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}
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// Parameter Set
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if ((saddr >= 60)&&(saddr <= 89))
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Save_Param();
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// DateTime Setting
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if ((saddr >= 110)&&(saddr <= 115))
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RTC_TimeSet(&SetTime);
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tlen = 8;
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result = mymalloc(tlen);
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if (result != NULL)
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{
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result[0] = rdata[0];
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result[1] = rdata[1];
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result[2] = rdata[2]; // Address H
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result[3] = rdata[3]; // Address L
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result[4] = rdata[4]; // Number of Register H
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result[5] = rdata[5]; // Number of Register L
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GetCRC(result, tlen - 2, &crch, &crcl);
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result[tlen - 2] = crch;
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result[tlen - 1] = crcl;
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*wlen = tlen;
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}
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return result;
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}
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