Modbus: changes to more C file to make them more compatible with NuttX coding style
This commit is contained in:
Gregory Nutt
parent
c36f2fd564
commit
00a091a840
@ -1,4 +1,6 @@
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/*
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/****************************************************************************
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* apps/modbus/rtu/mbcrc.c
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*
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* FreeModbus Libary: A portable Modbus implementation for Modbus ASCII/RTU.
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* Copyright (c) 2006 Christian Walter <wolti@sil.at>
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* All rights reserved.
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@ -25,74 +27,86 @@
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* File: $Id: mbcrc.c,v 1.7 2007/02/18 23:50:27 wolti Exp $
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*/
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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/* ----------------------- Platform includes --------------------------------*/
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#include "port.h"
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static const uint8_t aucCRCHi[] = {
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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,
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0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
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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,
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0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
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0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
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0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
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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,
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0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
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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,
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0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
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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,
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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,
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0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
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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,
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0x00, 0xC1, 0x81, 0x40
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};
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static const uint8_t aucCRCLo[] = {
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0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06, 0x07, 0xC7,
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0x05, 0xC5, 0xC4, 0x04, 0xCC, 0x0C, 0x0D, 0xCD, 0x0F, 0xCF, 0xCE, 0x0E,
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0x0A, 0xCA, 0xCB, 0x0B, 0xC9, 0x09, 0x08, 0xC8, 0xD8, 0x18, 0x19, 0xD9,
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0x1B, 0xDB, 0xDA, 0x1A, 0x1E, 0xDE, 0xDF, 0x1F, 0xDD, 0x1D, 0x1C, 0xDC,
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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,
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0x36, 0xF6, 0xF7, 0x37, 0xF5, 0x35, 0x34, 0xF4, 0x3C, 0xFC, 0xFD, 0x3D,
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0xFF, 0x3F, 0x3E, 0xFE, 0xFA, 0x3A, 0x3B, 0xFB, 0x39, 0xF9, 0xF8, 0x38,
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0x28, 0xE8, 0xE9, 0x29, 0xEB, 0x2B, 0x2A, 0xEA, 0xEE, 0x2E, 0x2F, 0xEF,
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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,
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0x63, 0xA3, 0xA2, 0x62, 0x66, 0xA6, 0xA7, 0x67, 0xA5, 0x65, 0x64, 0xA4,
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0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F, 0x6E, 0xAE, 0xAA, 0x6A, 0x6B, 0xAB,
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0x69, 0xA9, 0xA8, 0x68, 0x78, 0xB8, 0xB9, 0x79, 0xBB, 0x7B, 0x7A, 0xBA,
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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,
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0x50, 0x90, 0x91, 0x51, 0x93, 0x53, 0x52, 0x92, 0x96, 0x56, 0x57, 0x97,
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0x55, 0x95, 0x94, 0x54, 0x9C, 0x5C, 0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E,
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0x5A, 0x9A, 0x9B, 0x5B, 0x99, 0x59, 0x58, 0x98, 0x88, 0x48, 0x49, 0x89,
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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,
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0x41, 0x81, 0x80, 0x40
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};
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uint16_t
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usMBCRC16( uint8_t * pucFrame, uint16_t usLen )
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static const uint8_t aucCRCHi[] =
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{
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uint8_t ucCRCHi = 0xFF;
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uint8_t ucCRCLo = 0xFF;
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int iIndex;
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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,
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0x00, 0xc1, 0x81, 0x40, 0x01, 0xc0, 0x80, 0x41, 0x01, 0xc0, 0x80, 0x41,
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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,
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0x00, 0xc1, 0x81, 0x40, 0x01, 0xc0, 0x80, 0x41, 0x00, 0xc1, 0x81, 0x40,
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0x00, 0xc1, 0x81, 0x40, 0x01, 0xc0, 0x80, 0x41, 0x00, 0xc1, 0x81, 0x40,
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0x01, 0xc0, 0x80, 0x41, 0x01, 0xc0, 0x80, 0x41, 0x00, 0xc1, 0x81, 0x40,
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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,
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0x00, 0xc1, 0x81, 0x40, 0x01, 0xc0, 0x80, 0x41, 0x01, 0xc0, 0x80, 0x41,
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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,
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0x00, 0xc1, 0x81, 0x40, 0x00, 0xc1, 0x81, 0x40, 0x01, 0xc0, 0x80, 0x41,
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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,
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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,
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0x00, 0xc1, 0x81, 0x40, 0x01, 0xc0, 0x80, 0x41, 0x01, 0xc0, 0x80, 0x41,
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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,
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0x00, 0xc1, 0x81, 0x40
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};
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while( usLen-- )
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static const uint8_t aucCRCLo[] =
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{
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0x00, 0xc0, 0xc1, 0x01, 0xc3, 0x03, 0x02, 0xc2, 0xc6, 0x06, 0x07, 0xc7,
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0x05, 0xc5, 0xc4, 0x04, 0xcc, 0x0c, 0x0d, 0xcd, 0x0f, 0xcf, 0xce, 0x0e,
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0x0a, 0xca, 0xcb, 0x0b, 0xc9, 0x09, 0x08, 0xc8, 0xd8, 0x18, 0x19, 0xd9,
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0x1b, 0xdb, 0xda, 0x1a, 0x1e, 0xde, 0xdf, 0x1f, 0xdd, 0x1d, 0x1c, 0xdc,
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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,
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0x36, 0xf6, 0xf7, 0x37, 0xf5, 0x35, 0x34, 0xf4, 0x3c, 0xfc, 0xfd, 0x3d,
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0xff, 0x3f, 0x3e, 0xfe, 0xfa, 0x3a, 0x3b, 0xfb, 0x39, 0xf9, 0xf8, 0x38,
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0x28, 0xe8, 0xe9, 0x29, 0xeb, 0x2b, 0x2a, 0xea, 0xee, 0x2e, 0x2f, 0xef,
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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,
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0x63, 0xa3, 0xa2, 0x62, 0x66, 0xa6, 0xa7, 0x67, 0xa5, 0x65, 0x64, 0xa4,
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0x6c, 0xac, 0xad, 0x6d, 0xaf, 0x6f, 0x6e, 0xae, 0xaa, 0x6a, 0x6b, 0xab,
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0x69, 0xa9, 0xa8, 0x68, 0x78, 0xb8, 0xb9, 0x79, 0xbb, 0x7b, 0x7a, 0xba,
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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,
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0x50, 0x90, 0x91, 0x51, 0x93, 0x53, 0x52, 0x92, 0x96, 0x56, 0x57, 0x97,
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0x55, 0x95, 0x94, 0x54, 0x9c, 0x5c, 0x5d, 0x9d, 0x5f, 0x9f, 0x9e, 0x5e,
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0x5a, 0x9a, 0x9b, 0x5b, 0x99, 0x59, 0x58, 0x98, 0x88, 0x48, 0x49, 0x89,
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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,
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0x41, 0x81, 0x80, 0x40
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};
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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uint16_t usMBCRC16(uint8_t * pucFrame, uint16_t usLen)
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{
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uint8_t ucCRCHi = 0xff;
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uint8_t ucCRCLo = 0xff;
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int iIndex;
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while(usLen--)
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{
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iIndex = ucCRCLo ^ *( pucFrame++ );
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ucCRCLo = ( uint8_t )( ucCRCHi ^ aucCRCHi[iIndex] );
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ucCRCHi = aucCRCLo[iIndex];
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iIndex = ucCRCLo ^ *(pucFrame++);
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ucCRCLo = (uint8_t)(ucCRCHi ^ aucCRCHi[iIndex]);
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ucCRCHi = aucCRCLo[iIndex];
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}
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return ( uint16_t )( ucCRCHi << 8 | ucCRCLo );
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return (uint16_t)(ucCRCHi << 8 | ucCRCLo);
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}
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@ -1,4 +1,6 @@
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/*
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/****************************************************************************
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* apps/modbus/rtu/mbrtu.c
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*
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* FreeModbus Libary: A portable Modbus implementation for Modbus ASCII/RTU.
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* Copyright (c) 2006 Christian Walter <wolti@sil.at>
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* All rights reserved.
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@ -25,19 +27,19 @@
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* File: $Id: mbrtu.c,v 1.18 2007/09/12 10:15:56 wolti Exp $
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*/
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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/* ----------------------- System includes ----------------------------------*/
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#include <nuttx/config.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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/* ----------------------- Platform includes --------------------------------*/
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#include "port.h"
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/* ----------------------- Modbus includes ----------------------------------*/
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#include <apps/modbus/mb.h>
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#include <apps/modbus/mbframe.h>
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#include <apps/modbus/mbport.h>
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@ -45,29 +47,38 @@
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#include "mbrtu.h"
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#include "mbcrc.h"
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/* ----------------------- Defines ------------------------------------------*/
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#define MB_SER_PDU_SIZE_MIN 4 /*!< Minimum size of a Modbus RTU frame. */
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#define MB_SER_PDU_SIZE_MAX 256 /*!< Maximum size of a Modbus RTU frame. */
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#define MB_SER_PDU_SIZE_CRC 2 /*!< Size of CRC field in PDU. */
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#define MB_SER_PDU_ADDR_OFF 0 /*!< Offset of slave address in Ser-PDU. */
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#define MB_SER_PDU_PDU_OFF 1 /*!< Offset of Modbus-PDU in Ser-PDU. */
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define MB_SER_PDU_SIZE_MIN 4 /* Minimum size of a Modbus RTU frame. */
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#define MB_SER_PDU_SIZE_MAX 256 /* Maximum size of a Modbus RTU frame. */
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#define MB_SER_PDU_SIZE_CRC 2 /* Size of CRC field in PDU. */
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#define MB_SER_PDU_ADDR_OFF 0 /* Offset of slave address in Ser-PDU. */
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#define MB_SER_PDU_PDU_OFF 1 /* Offset of Modbus-PDU in Ser-PDU. */
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/****************************************************************************
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* Private Type Definitions
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****************************************************************************/
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/* ----------------------- Type definitions ---------------------------------*/
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typedef enum
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{
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STATE_RX_INIT, /*!< Receiver is in initial state. */
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STATE_RX_IDLE, /*!< Receiver is in idle state. */
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STATE_RX_RCV, /*!< Frame is beeing received. */
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STATE_RX_ERROR /*!< If the frame is invalid. */
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STATE_RX_INIT, /* Receiver is in initial state. */
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STATE_RX_IDLE, /* Receiver is in idle state. */
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STATE_RX_RCV, /* Frame is being received. */
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STATE_RX_ERROR /* If the frame is invalid. */
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} eMBRcvState;
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typedef enum
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{
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STATE_TX_IDLE, /*!< Transmitter is in idle state. */
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STATE_TX_XMIT /*!< Transmitter is in transfer state. */
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STATE_TX_IDLE, /* Transmitter is in idle state. */
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STATE_TX_XMIT /* Transmitter is in transfer state. */
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} eMBSndState;
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/* ----------------------- Static variables ---------------------------------*/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static volatile eMBSndState eSndState;
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static volatile eMBRcvState eRcvState;
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@ -78,283 +89,312 @@ static volatile uint16_t usSndBufferCount;
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static volatile uint16_t usRcvBufferPos;
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/* ----------------------- Start implementation -----------------------------*/
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eMBErrorCode
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eMBRTUInit(uint8_t ucSlaveAddress, uint8_t ucPort, speed_t ulBaudRate, eMBParity eParity)
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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eMBErrorCode eMBRTUInit(uint8_t ucSlaveAddress, uint8_t ucPort,
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speed_t ulBaudRate, eMBParity eParity)
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{
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eMBErrorCode eStatus = MB_ENOERR;
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uint32_t usTimerT35_50us;
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eMBErrorCode eStatus = MB_ENOERR;
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uint32_t usTimerT35_50us;
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(void)ucSlaveAddress;
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ENTER_CRITICAL_SECTION();
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(void)ucSlaveAddress;
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ENTER_CRITICAL_SECTION();
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/* Modbus RTU uses 8 Databits. */
|
||||
/* Modbus RTU uses 8 Databits. */
|
||||
|
||||
if (xMBPortSerialInit(ucPort, ulBaudRate, 8, eParity) != true)
|
||||
if (xMBPortSerialInit(ucPort, ulBaudRate, 8, eParity) != true)
|
||||
{
|
||||
eStatus = MB_EPORTERR;
|
||||
eStatus = MB_EPORTERR;
|
||||
}
|
||||
else
|
||||
else
|
||||
{
|
||||
/* If baudrate > 19200 then we should use the fixed timer values
|
||||
* t35 = 1750us. Otherwise t35 must be 3.5 times the character time.
|
||||
*/
|
||||
if (ulBaudRate > 19200)
|
||||
/* If baudrate > 19200 then we should use the fixed timer values
|
||||
* t35 = 1750us. Otherwise t35 must be 3.5 times the character time.
|
||||
*/
|
||||
|
||||
if (ulBaudRate > 19200)
|
||||
{
|
||||
usTimerT35_50us = 35; /* 1800us. */
|
||||
usTimerT35_50us = 35; /* 1800us. */
|
||||
}
|
||||
else
|
||||
else
|
||||
{
|
||||
/* The timer reload value for a character is given by:
|
||||
*
|
||||
* ChTimeValue = Ticks_per_1s / (Baudrate / 11)
|
||||
* = 11 * Ticks_per_1s / Baudrate
|
||||
* = 220000 / Baudrate
|
||||
* The reload for t3.5 is 1.5 times this value and similary
|
||||
* for t3.5.
|
||||
*/
|
||||
usTimerT35_50us = (7UL * 220000UL) / (2UL * ulBaudRate);
|
||||
/* The timer reload value for a character is given by:
|
||||
*
|
||||
* ChTimeValue = Ticks_per_1s / (Baudrate / 11)
|
||||
* = 11 * Ticks_per_1s / Baudrate
|
||||
* = 220000 / Baudrate
|
||||
* The reload for t3.5 is 1.5 times this value and similary
|
||||
* for t3.5.
|
||||
*/
|
||||
|
||||
usTimerT35_50us = (7UL * 220000UL) / (2UL * ulBaudRate);
|
||||
}
|
||||
if (xMBPortTimersInit((uint16_t) usTimerT35_50us) != true)
|
||||
|
||||
if (xMBPortTimersInit((uint16_t) usTimerT35_50us) != true)
|
||||
{
|
||||
eStatus = MB_EPORTERR;
|
||||
eStatus = MB_EPORTERR;
|
||||
}
|
||||
}
|
||||
EXIT_CRITICAL_SECTION();
|
||||
|
||||
return eStatus;
|
||||
EXIT_CRITICAL_SECTION();
|
||||
return eStatus;
|
||||
}
|
||||
|
||||
void
|
||||
eMBRTUStart(void)
|
||||
void eMBRTUStart(void)
|
||||
{
|
||||
ENTER_CRITICAL_SECTION();
|
||||
/* Initially the receiver is in the state STATE_RX_INIT. we start
|
||||
* the timer and if no character is received within t3.5 we change
|
||||
* to STATE_RX_IDLE. This makes sure that we delay startup of the
|
||||
* modbus protocol stack until the bus is free.
|
||||
*/
|
||||
eRcvState = STATE_RX_INIT;
|
||||
vMBPortSerialEnable(true, false);
|
||||
vMBPortTimersEnable();
|
||||
ENTER_CRITICAL_SECTION();
|
||||
|
||||
EXIT_CRITICAL_SECTION();
|
||||
/* Initially the receiver is in the state STATE_RX_INIT. we start
|
||||
* the timer and if no character is received within t3.5 we change
|
||||
* to STATE_RX_IDLE. This makes sure that we delay startup of the
|
||||
* modbus protocol stack until the bus is free.
|
||||
*/
|
||||
|
||||
eRcvState = STATE_RX_INIT;
|
||||
vMBPortSerialEnable(true, false);
|
||||
vMBPortTimersEnable();
|
||||
|
||||
EXIT_CRITICAL_SECTION();
|
||||
}
|
||||
|
||||
void
|
||||
eMBRTUStop(void)
|
||||
void eMBRTUStop(void)
|
||||
{
|
||||
ENTER_CRITICAL_SECTION();
|
||||
vMBPortSerialEnable(false, false);
|
||||
vMBPortTimersDisable();
|
||||
EXIT_CRITICAL_SECTION();
|
||||
ENTER_CRITICAL_SECTION();
|
||||
vMBPortSerialEnable(false, false);
|
||||
vMBPortTimersDisable();
|
||||
EXIT_CRITICAL_SECTION();
|
||||
}
|
||||
|
||||
eMBErrorCode
|
||||
eMBRTUReceive(uint8_t * pucRcvAddress, uint8_t ** pucFrame, uint16_t * pusLength)
|
||||
eMBErrorCode eMBRTUReceive(uint8_t *pucRcvAddress, uint8_t **pucFrame,
|
||||
uint16_t *pusLength)
|
||||
{
|
||||
eMBErrorCode eStatus = MB_ENOERR;
|
||||
eMBErrorCode eStatus = MB_ENOERR;
|
||||
|
||||
ENTER_CRITICAL_SECTION();
|
||||
ASSERT(usRcvBufferPos < MB_SER_PDU_SIZE_MAX);
|
||||
ENTER_CRITICAL_SECTION();
|
||||
ASSERT(usRcvBufferPos < MB_SER_PDU_SIZE_MAX);
|
||||
|
||||
/* Length and CRC check */
|
||||
/* Length and CRC check */
|
||||
|
||||
if ((usRcvBufferPos >= MB_SER_PDU_SIZE_MIN)
|
||||
&& (usMBCRC16((uint8_t *) ucRTUBuf, usRcvBufferPos) == 0))
|
||||
if ((usRcvBufferPos >= MB_SER_PDU_SIZE_MIN) &&
|
||||
(usMBCRC16((uint8_t *) ucRTUBuf, usRcvBufferPos) == 0))
|
||||
{
|
||||
/* Save the address field. All frames are passed to the upper layed
|
||||
* and the decision if a frame is used is done there.
|
||||
*/
|
||||
/* Save the address field. All frames are passed to the upper layed
|
||||
* and the decision if a frame is used is done there.
|
||||
*/
|
||||
|
||||
*pucRcvAddress = ucRTUBuf[MB_SER_PDU_ADDR_OFF];
|
||||
*pucRcvAddress = ucRTUBuf[MB_SER_PDU_ADDR_OFF];
|
||||
|
||||
/* Total length of Modbus-PDU is Modbus-Serial-Line-PDU minus
|
||||
* size of address field and CRC checksum.
|
||||
*/
|
||||
/* Total length of Modbus-PDU is Modbus-Serial-Line-PDU minus
|
||||
* size of address field and CRC checksum.
|
||||
*/
|
||||
|
||||
*pusLength = (uint16_t)(usRcvBufferPos - MB_SER_PDU_PDU_OFF - MB_SER_PDU_SIZE_CRC);
|
||||
*pusLength = (uint16_t)(usRcvBufferPos - MB_SER_PDU_PDU_OFF - MB_SER_PDU_SIZE_CRC);
|
||||
|
||||
/* Return the start of the Modbus PDU to the caller. */
|
||||
/* Return the start of the Modbus PDU to the caller. */
|
||||
|
||||
*pucFrame = (uint8_t *) & ucRTUBuf[MB_SER_PDU_PDU_OFF];
|
||||
*pucFrame = (uint8_t *) & ucRTUBuf[MB_SER_PDU_PDU_OFF];
|
||||
}
|
||||
else
|
||||
else
|
||||
{
|
||||
eStatus = MB_EIO;
|
||||
eStatus = MB_EIO;
|
||||
}
|
||||
|
||||
EXIT_CRITICAL_SECTION();
|
||||
return eStatus;
|
||||
EXIT_CRITICAL_SECTION();
|
||||
return eStatus;
|
||||
}
|
||||
|
||||
eMBErrorCode
|
||||
eMBRTUSend(uint8_t ucSlaveAddress, const uint8_t * pucFrame, uint16_t usLength)
|
||||
eMBErrorCode eMBRTUSend(uint8_t ucSlaveAddress, const uint8_t *pucFrame, uint16_t usLength)
|
||||
{
|
||||
eMBErrorCode eStatus = MB_ENOERR;
|
||||
uint16_t usCRC16;
|
||||
eMBErrorCode eStatus = MB_ENOERR;
|
||||
uint16_t usCRC16;
|
||||
|
||||
ENTER_CRITICAL_SECTION();
|
||||
ENTER_CRITICAL_SECTION();
|
||||
|
||||
/* Check if the receiver is still in idle state. If not we where to
|
||||
* slow with processing the received frame and the master sent another
|
||||
* frame on the network. We have to abort sending the frame.
|
||||
*/
|
||||
if (eRcvState == STATE_RX_IDLE)
|
||||
/* Check if the receiver is still in idle state. If not we where to
|
||||
* slow with processing the received frame and the master sent another
|
||||
* frame on the network. We have to abort sending the frame.
|
||||
*/
|
||||
|
||||
if (eRcvState == STATE_RX_IDLE)
|
||||
{
|
||||
/* First byte before the Modbus-PDU is the slave address. */
|
||||
pucSndBufferCur = (uint8_t *) pucFrame - 1;
|
||||
usSndBufferCount = 1;
|
||||
/* First byte before the Modbus-PDU is the slave address. */
|
||||
|
||||
/* Now copy the Modbus-PDU into the Modbus-Serial-Line-PDU. */
|
||||
pucSndBufferCur[MB_SER_PDU_ADDR_OFF] = ucSlaveAddress;
|
||||
usSndBufferCount += usLength;
|
||||
pucSndBufferCur = (uint8_t *) pucFrame - 1;
|
||||
usSndBufferCount = 1;
|
||||
|
||||
/* Calculate CRC16 checksum for Modbus-Serial-Line-PDU. */
|
||||
usCRC16 = usMBCRC16((uint8_t *) pucSndBufferCur, usSndBufferCount);
|
||||
ucRTUBuf[usSndBufferCount++] = (uint8_t)(usCRC16 & 0xFF);
|
||||
ucRTUBuf[usSndBufferCount++] = (uint8_t)(usCRC16 >> 8);
|
||||
/* Now copy the Modbus-PDU into the Modbus-Serial-Line-PDU. */
|
||||
|
||||
/* Activate the transmitter. */
|
||||
eSndState = STATE_TX_XMIT;
|
||||
vMBPortSerialEnable(false, true);
|
||||
pucSndBufferCur[MB_SER_PDU_ADDR_OFF] = ucSlaveAddress;
|
||||
usSndBufferCount += usLength;
|
||||
|
||||
/* Calculate CRC16 checksum for Modbus-Serial-Line-PDU. */
|
||||
|
||||
usCRC16 = usMBCRC16((uint8_t *) pucSndBufferCur, usSndBufferCount);
|
||||
ucRTUBuf[usSndBufferCount++] = (uint8_t)(usCRC16 & 0xFF);
|
||||
ucRTUBuf[usSndBufferCount++] = (uint8_t)(usCRC16 >> 8);
|
||||
|
||||
/* Activate the transmitter. */
|
||||
|
||||
eSndState = STATE_TX_XMIT;
|
||||
vMBPortSerialEnable(false, true);
|
||||
}
|
||||
else
|
||||
else
|
||||
{
|
||||
eStatus = MB_EIO;
|
||||
eStatus = MB_EIO;
|
||||
}
|
||||
EXIT_CRITICAL_SECTION();
|
||||
return eStatus;
|
||||
|
||||
EXIT_CRITICAL_SECTION();
|
||||
return eStatus;
|
||||
}
|
||||
|
||||
bool
|
||||
xMBRTUReceiveFSM(void)
|
||||
bool xMBRTUReceiveFSM(void)
|
||||
{
|
||||
bool xTaskNeedSwitch = false;
|
||||
uint8_t ucByte;
|
||||
bool xTaskNeedSwitch = false;
|
||||
uint8_t ucByte;
|
||||
|
||||
ASSERT(eSndState == STATE_TX_IDLE);
|
||||
ASSERT(eSndState == STATE_TX_IDLE);
|
||||
|
||||
/* Always read the character. */
|
||||
(void)xMBPortSerialGetByte((int8_t *) & ucByte);
|
||||
/* Always read the character. */
|
||||
|
||||
switch (eRcvState)
|
||||
(void)xMBPortSerialGetByte((int8_t *) & ucByte);
|
||||
|
||||
switch (eRcvState)
|
||||
{
|
||||
/* If we have received a character in the init state we have to
|
||||
* wait until the frame is finished.
|
||||
*/
|
||||
case STATE_RX_INIT:
|
||||
/* If we have received a character in the init state we have to
|
||||
* wait until the frame is finished.
|
||||
*/
|
||||
|
||||
case STATE_RX_INIT:
|
||||
vMBPortTimersEnable();
|
||||
break;
|
||||
|
||||
/* In the error state we wait until all characters in the
|
||||
* damaged frame are transmitted.
|
||||
*/
|
||||
case STATE_RX_ERROR:
|
||||
/* In the error state we wait until all characters in the
|
||||
* damaged frame are transmitted.
|
||||
*/
|
||||
|
||||
case STATE_RX_ERROR:
|
||||
vMBPortTimersEnable();
|
||||
break;
|
||||
|
||||
/* In the idle state we wait for a new character. If a character
|
||||
* is received the t1.5 and t3.5 timers are started and the
|
||||
* receiver is in the state STATE_RX_RECEIVCE.
|
||||
*/
|
||||
case STATE_RX_IDLE:
|
||||
/* In the idle state we wait for a new character. If a character
|
||||
* is received the t1.5 and t3.5 timers are started and the
|
||||
* receiver is in the state STATE_RX_RECEIVCE.
|
||||
*/
|
||||
|
||||
case STATE_RX_IDLE:
|
||||
usRcvBufferPos = 0;
|
||||
ucRTUBuf[usRcvBufferPos++] = ucByte;
|
||||
eRcvState = STATE_RX_RCV;
|
||||
|
||||
/* Enable t3.5 timers. */
|
||||
|
||||
vMBPortTimersEnable();
|
||||
break;
|
||||
|
||||
/* We are currently receiving a frame. Reset the timer after
|
||||
* every character received. If more than the maximum possible
|
||||
* number of bytes in a modbus frame is received the frame is
|
||||
* ignored.
|
||||
*/
|
||||
case STATE_RX_RCV:
|
||||
/* We are currently receiving a frame. Reset the timer after
|
||||
* every character received. If more than the maximum possible
|
||||
* number of bytes in a modbus frame is received the frame is
|
||||
* ignored.
|
||||
*/
|
||||
|
||||
case STATE_RX_RCV:
|
||||
if (usRcvBufferPos < MB_SER_PDU_SIZE_MAX)
|
||||
{
|
||||
{
|
||||
ucRTUBuf[usRcvBufferPos++] = ucByte;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
{
|
||||
eRcvState = STATE_RX_ERROR;
|
||||
}
|
||||
}
|
||||
|
||||
vMBPortTimersEnable();
|
||||
break;
|
||||
}
|
||||
return xTaskNeedSwitch;
|
||||
|
||||
return xTaskNeedSwitch;
|
||||
}
|
||||
|
||||
bool
|
||||
xMBRTUTransmitFSM(void)
|
||||
bool xMBRTUTransmitFSM(void)
|
||||
{
|
||||
bool xNeedPoll = false;
|
||||
bool xNeedPoll = false;
|
||||
|
||||
ASSERT(eRcvState == STATE_RX_IDLE);
|
||||
ASSERT(eRcvState == STATE_RX_IDLE);
|
||||
|
||||
switch (eSndState)
|
||||
switch (eSndState)
|
||||
{
|
||||
/* We should not get a transmitter event if the transmitter is in
|
||||
* idle state. */
|
||||
/* We should not get a transmitter event if the transmitter is in
|
||||
* idle state.
|
||||
*/
|
||||
|
||||
case STATE_TX_IDLE:
|
||||
/* enable receiver/disable transmitter. */
|
||||
vMBPortSerialEnable(true, false);
|
||||
break;
|
||||
/* enable receiver/disable transmitter. */
|
||||
|
||||
vMBPortSerialEnable(true, false);
|
||||
break;
|
||||
|
||||
case STATE_TX_XMIT:
|
||||
/* check if we are finished. */
|
||||
if (usSndBufferCount != 0)
|
||||
/* check if we are finished. */
|
||||
|
||||
if (usSndBufferCount != 0)
|
||||
{
|
||||
xMBPortSerialPutByte((int8_t)*pucSndBufferCur);
|
||||
pucSndBufferCur++; /* next byte in sendbuffer. */
|
||||
usSndBufferCount--;
|
||||
xMBPortSerialPutByte((int8_t)*pucSndBufferCur);
|
||||
pucSndBufferCur++; /* next byte in sendbuffer. */
|
||||
usSndBufferCount--;
|
||||
}
|
||||
else
|
||||
else
|
||||
{
|
||||
xNeedPoll = xMBPortEventPost(EV_FRAME_SENT);
|
||||
/* Disable transmitter. This prevents another transmit buffer
|
||||
* empty interrupt. */
|
||||
vMBPortSerialEnable(true, false);
|
||||
eSndState = STATE_TX_IDLE;
|
||||
xNeedPoll = xMBPortEventPost(EV_FRAME_SENT);
|
||||
|
||||
/* Disable transmitter. This prevents another transmit buffer
|
||||
* empty interrupt.
|
||||
*/
|
||||
|
||||
vMBPortSerialEnable(true, false);
|
||||
eSndState = STATE_TX_IDLE;
|
||||
}
|
||||
break;
|
||||
break;
|
||||
}
|
||||
|
||||
return xNeedPoll;
|
||||
return xNeedPoll;
|
||||
}
|
||||
|
||||
bool
|
||||
xMBRTUTimerT35Expired(void)
|
||||
bool xMBRTUTimerT35Expired(void)
|
||||
{
|
||||
bool xNeedPoll = false;
|
||||
bool xNeedPoll = false;
|
||||
|
||||
switch (eRcvState)
|
||||
switch (eRcvState)
|
||||
{
|
||||
/* Timer t35 expired. Startup phase is finished. */
|
||||
case STATE_RX_INIT:
|
||||
/* Timer t35 expired. Start-up phase is finished. */
|
||||
|
||||
case STATE_RX_INIT:
|
||||
xNeedPoll = xMBPortEventPost(EV_READY);
|
||||
break;
|
||||
|
||||
/* A frame was received and t35 expired. Notify the listener that
|
||||
* a new frame was received. */
|
||||
case STATE_RX_RCV:
|
||||
/* A frame was received and t35 expired. Notify the listener that
|
||||
* a new frame was received.
|
||||
*/
|
||||
|
||||
case STATE_RX_RCV:
|
||||
xNeedPoll = xMBPortEventPost(EV_FRAME_RECEIVED);
|
||||
break;
|
||||
|
||||
/* An error occured while receiving the frame. */
|
||||
case STATE_RX_ERROR:
|
||||
/* An error occurred while receiving the frame. */
|
||||
|
||||
case STATE_RX_ERROR:
|
||||
break;
|
||||
|
||||
/* Function called in an illegal state. */
|
||||
default:
|
||||
/* Function called in an illegal state. */
|
||||
|
||||
default:
|
||||
ASSERT((eRcvState == STATE_RX_INIT) ||
|
||||
(eRcvState == STATE_RX_RCV) || (eRcvState == STATE_RX_ERROR));
|
||||
(eRcvState == STATE_RX_RCV) ||
|
||||
(eRcvState == STATE_RX_ERROR));
|
||||
}
|
||||
|
||||
vMBPortTimersDisable();
|
||||
eRcvState = STATE_RX_IDLE;
|
||||
vMBPortTimersDisable();
|
||||
eRcvState = STATE_RX_IDLE;
|
||||
|
||||
return xNeedPoll;
|
||||
return xNeedPoll;
|
||||
}
|
||||
|
||||
@ -160,4 +160,4 @@ eMBErrorCode eMBTCPSend(uint8_t _unused, const uint8_t * pucFrame, uint16_t usLe
|
||||
return eStatus;
|
||||
}
|
||||
|
||||
#endif
|
||||
#endif /* CONFIG_MB_TCP_ENABLED */
|
||||
|
||||
@ -43,7 +43,7 @@ PR_BEGIN_EXTERN_C
|
||||
#define MB_TCP_PSEUDO_ADDRESS 255
|
||||
|
||||
/****************************************************************************
|
||||
* Public Function Protototypes
|
||||
* Public Function Prototypes
|
||||
****************************************************************************/
|
||||
|
||||
eMBErrorCode eMBTCPDoInit(uint16_t ucTCPPort);
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user