Wayne Lin / Modbus

modified for nuc472

Dependents:   modbus-over-rs485-sample NTOUEE-mbed-modbus-RTU NuMaker_NuWicam_Lite

Fork of Modbus by Matthew Waddilove

portserial.cpp@7:be466464a18c, 2017-10-06 (annotated)

Committer:
wclin
Date:
Fri Oct 06 02:54:27 2017 +0000
Revision:
7:be466464a18c
Parent:
6:08849dd9654d 
Support M487 board.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
giryan 0:274eb57e1df3 1 /*
giryan 0:274eb57e1df3 2 * FreeModbus Libary: BARE Port
giryan 0:274eb57e1df3 3 * Copyright (C) 2006 Christian Walter <wolti@sil.at>
giryan 0:274eb57e1df3 4 *
giryan 0:274eb57e1df3 5 * This library is free software; you can redistribute it and/or
giryan 0:274eb57e1df3 6 * modify it under the terms of the GNU Lesser General Public
giryan 0:274eb57e1df3 7 * License as published by the Free Software Foundation; either
giryan 0:274eb57e1df3 8 * version 2.1 of the License, or (at your option) any later version.
giryan 0:274eb57e1df3 9 *
giryan 0:274eb57e1df3 10 * This library is distributed in the hope that it will be useful,
giryan 0:274eb57e1df3 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
giryan 0:274eb57e1df3 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
giryan 0:274eb57e1df3 13 * Lesser General Public License for more details.
giryan 0:274eb57e1df3 14 *
giryan 0:274eb57e1df3 15 * You should have received a copy of the GNU Lesser General Public
giryan 0:274eb57e1df3 16 * License along with this library; if not, write to the Free Software
giryan 0:274eb57e1df3 17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
giryan 0:274eb57e1df3 18 *
giryan 0:274eb57e1df3 19 * File: $Id: portserial.c,v 1.1 2006/08/22 21:35:13 wolti Exp $
giryan 0:274eb57e1df3 20 */
giryan 0:274eb57e1df3 21
giryan 0:274eb57e1df3 22 /* ----------------------- System includes ----------------------------------*/
giryan 0:274eb57e1df3 23 #include "mbed.h" // Cam
giryan 0:274eb57e1df3 24
giryan 0:274eb57e1df3 25 /* ----------------------- Platform includes --------------------------------*/
giryan 0:274eb57e1df3 26 #include "port.h"
giryan 0:274eb57e1df3 27
giryan 0:274eb57e1df3 28 /* ----------------------- Modbus includes ----------------------------------*/
giryan 0:274eb57e1df3 29 #include "mb.h"
giryan 0:274eb57e1df3 30 #include "mbport.h"
giryan 0:274eb57e1df3 31
giryan 0:274eb57e1df3 32
giryan 0:274eb57e1df3 33 /* ----------------------- static functions ---------------------------------*/
giryan 0:274eb57e1df3 34 static void prvvUARTTxReadyISR( void );
giryan 0:274eb57e1df3 35 static void prvvUARTRxISR( void );
giryan 0:274eb57e1df3 36 static void prvvUARTISR( void );
giryan 0:274eb57e1df3 37
wclin 5:d4c3b20819a7 38 //#define DEF_RS485_PORT 1
giryan 0:274eb57e1df3 39 /* ----------------------- System Variables ---------------------------------*/
wclin 3:419ee4c5e10f 40
wclin 7:be466464a18c 41 #if defined(MBED_CONF_APP_DEF_RS485_PORT) && (MBED_CONF_APP_DEF_RS485_PORT)// mbed serial port
wclin 6:08849dd9654d 42 #include "nvt_rs485.h"
wclin 6:08849dd9654d 43 // RS485 TX, RX, RTS pins
wclin 7:be466464a18c 44 #if defined(TARGET_NUMAKER_PFM_NUC472) // for NUC472 board
wclin 6:08849dd9654d 45 NvtRS485 pc(PF_13, PF_14, PF_11);
wclin 6:08849dd9654d 46 #elif defined(TARGET_NUMAKER_PFM_M453) // for M453 board
wclin 6:08849dd9654d 47 NvtRS485 pc(PE_8, PE_9, PE_11);
wclin 7:be466464a18c 48 #else
wclin 7:be466464a18c 49 #error "The demo code can't be executed on this board."
wclin 6:08849dd9654d 50 #endif
wclin 3:419ee4c5e10f 51 #else
wclin 6:08849dd9654d 52 //UART TX, RX
wclin 7:be466464a18c 53 #if defined(TARGET_NUMAKER_PFM_NUC472) // for NUC472 board
wclin 6:08849dd9654d 54 Serial pc(PG_2, PG_1);
wclin 6:08849dd9654d 55 #elif defined(TARGET_NUMAKER_PFM_M453) // for M453 board
wclin 6:08849dd9654d 56 Serial pc(PD_1, PD_6);
wclin 7:be466464a18c 57 #elif defined(TARGET_NUMAKER_PFM_M487) // for M478 board
wclin 7:be466464a18c 58 Serial pc(PC_12, PC_11);
wclin 7:be466464a18c 59 #else
wclin 7:be466464a18c 60 #error "The demo code can't be executed on this board."
wclin 6:08849dd9654d 61 #endif
wclin 3:419ee4c5e10f 62 #endif
giryan 0:274eb57e1df3 63
wclin 2:6ee56c002f64 64 static volatile BOOL RxEnable, TxEnable; // Cam - keep a static copy of the RxEnable and TxEnable
giryan 0:274eb57e1df3 65 // status for the simulated ISR (ticker)
giryan 0:274eb57e1df3 66
giryan 0:274eb57e1df3 67
giryan 0:274eb57e1df3 68 /* ----------------------- Start implementation -----------------------------*/
giryan 0:274eb57e1df3 69 // Cam - This is called every 1mS to simulate Rx character received ISR and
giryan 0:274eb57e1df3 70 // Tx buffer empty ISR.
giryan 0:274eb57e1df3 71 static void
giryan 0:274eb57e1df3 72 prvvUARTISR( void )
giryan 0:274eb57e1df3 73 {
wclin 3:419ee4c5e10f 74 if ( TxEnable )
giryan 0:274eb57e1df3 75 if(pc.writeable())
giryan 0:274eb57e1df3 76 prvvUARTTxReadyISR();
wclin 3:419ee4c5e10f 77
wclin 3:419ee4c5e10f 78 if ( RxEnable )
giryan 0:274eb57e1df3 79 if(pc.readable())
wclin 3:419ee4c5e10f 80 prvvUARTRxISR();
giryan 0:274eb57e1df3 81 }
giryan 0:274eb57e1df3 82
giryan 0:274eb57e1df3 83 void
giryan 0:274eb57e1df3 84 vMBPortSerialEnable( BOOL xRxEnable, BOOL xTxEnable )
giryan 0:274eb57e1df3 85 {
giryan 0:274eb57e1df3 86 /* If xRXEnable enable serial receive interrupts. If xTxENable enable
giryan 0:274eb57e1df3 87 * transmitter empty interrupts.
giryan 0:274eb57e1df3 88 */
giryan 0:274eb57e1df3 89 RxEnable = xRxEnable;
giryan 0:274eb57e1df3 90 TxEnable = xTxEnable;
wclin 3:419ee4c5e10f 91
wclin 3:419ee4c5e10f 92 //printf("\r\nRx: %d, TX:%d\r\n", RxEnable, TxEnable);
giryan 0:274eb57e1df3 93 }
giryan 0:274eb57e1df3 94
wclin 1:cfde7320b0bf 95 /* ----------------------- Start implementation -----------------------------*/
giryan 0:274eb57e1df3 96 BOOL
giryan 0:274eb57e1df3 97 xMBPortSerialInit( UCHAR ucPORT, ULONG ulBaudRate, UCHAR ucDataBits, eMBParity eParity )
giryan 0:274eb57e1df3 98 {
wclin 1:cfde7320b0bf 99 pc.baud(ulBaudRate);
wclin 3:419ee4c5e10f 100 #if defined(DEF_RS485_PORT) // mbed serial port
wclin 6:08849dd9654d 101 #if defined(TARGET_NUMAKER_PFM_NUC472) // for NUC472 board
wclin 3:419ee4c5e10f 102 pc.set_rs485_mode(PF_11);
wclin 6:08849dd9654d 103 #elif defined(TARGET_NUMAKER_PFM_M453) // for M453 board
wclin 6:08849dd9654d 104 pc.set_rs485_mode(PE_11);
wclin 6:08849dd9654d 105 #endif
wclin 3:419ee4c5e10f 106 #endif
wclin 1:cfde7320b0bf 107 return TRUE;
wclin 1:cfde7320b0bf 108 }
wclin 1:cfde7320b0bf 109
wclin 1:cfde7320b0bf 110 void xMBPortSerialPolling( void )
wclin 1:cfde7320b0bf 111 {
wclin 1:cfde7320b0bf 112 prvvUARTISR( );
wclin 1:cfde7320b0bf 113 }
wclin 1:cfde7320b0bf 114
giryan 0:274eb57e1df3 115 BOOL
giryan 0:274eb57e1df3 116 xMBPortSerialPutByte( CHAR ucByte )
giryan 0:274eb57e1df3 117 {
giryan 0:274eb57e1df3 118 /* Put a byte in the UARTs transmit buffer. This function is called
giryan 0:274eb57e1df3 119 * by the protocol stack if pxMBFrameCBTransmitterEmpty( ) has been
giryan 0:274eb57e1df3 120 * called. */
wclin 3:419ee4c5e10f 121 //printf("[%02x]", ucByte );
giryan 0:274eb57e1df3 122 pc.putc( ucByte);
giryan 0:274eb57e1df3 123 return TRUE;
giryan 0:274eb57e1df3 124 }
giryan 0:274eb57e1df3 125
giryan 0:274eb57e1df3 126 BOOL
giryan 0:274eb57e1df3 127 xMBPortSerialGetByte( CHAR * pucByte )
giryan 0:274eb57e1df3 128 {
giryan 0:274eb57e1df3 129 /* Return the byte in the UARTs receive buffer. This function is called
giryan 0:274eb57e1df3 130 * by the protocol stack after pxMBFrameCBByteReceived( ) has been called.
giryan 0:274eb57e1df3 131 */
wclin 3:419ee4c5e10f 132 *pucByte = pc.getc();
wclin 3:419ee4c5e10f 133 //printf("<%02x>", *pucByte );
giryan 0:274eb57e1df3 134 return TRUE;
giryan 0:274eb57e1df3 135 }
giryan 0:274eb57e1df3 136
giryan 0:274eb57e1df3 137 /* Create an interrupt handler for the transmit buffer empty interrupt
giryan 0:274eb57e1df3 138 * (or an equivalent) for your target processor. This function should then
giryan 0:274eb57e1df3 139 * call pxMBFrameCBTransmitterEmpty( ) which tells the protocol stack that
giryan 0:274eb57e1df3 140 * a new character can be sent. The protocol stack will then call
giryan 0:274eb57e1df3 141 * xMBPortSerialPutByte( ) to send the character.
giryan 0:274eb57e1df3 142 */
giryan 0:274eb57e1df3 143 static void prvvUARTTxReadyISR( void )
giryan 0:274eb57e1df3 144 {
giryan 0:274eb57e1df3 145 pxMBFrameCBTransmitterEmpty( );
giryan 0:274eb57e1df3 146 }
giryan 0:274eb57e1df3 147
giryan 0:274eb57e1df3 148 /* Create an interrupt handler for the receive interrupt for your target
giryan 0:274eb57e1df3 149 * processor. This function should then call pxMBFrameCBByteReceived( ). The
giryan 0:274eb57e1df3 150 * protocol stack will then call xMBPortSerialGetByte( ) to retrieve the
giryan 0:274eb57e1df3 151 * character.
giryan 0:274eb57e1df3 152 */
giryan 0:274eb57e1df3 153 static void prvvUARTRxISR( void )
giryan 0:274eb57e1df3 154 {
wclin 2:6ee56c002f64 155 vMBPortTimersDisable();
giryan 0:274eb57e1df3 156 pxMBFrameCBByteReceived( );
giryan 0:274eb57e1df3 157 }
giryan 0:274eb57e1df3 158
giryan 0:274eb57e1df3 159