Nuvoton / Modbus

modified for NuMaker_PFM series

Dependents:   NuMaker-mbed-modbus-sample NuMaker_NuWicam_Lite NuMaker-mbed-modbus-sample

Fork of Modbus by Wayne Lin

portserial.cpp@2:6ee56c002f64, 2016-08-18 (annotated)

Committer:
wclin
Date:
Thu Aug 18 08:24:37 2016 +0000
Revision:
2:6ee56c002f64
Parent:
1:cfde7320b0bf
Child:
3:419ee4c5e10f
Fix buffer overflow issue.

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
giryan 0:274eb57e1df3 38 /* ----------------------- System Variables ---------------------------------*/
wclin 1:cfde7320b0bf 39 //Serial pc(USBTX, USBRX); // Cam - mbed USB serial port
wclin 2:6ee56c002f64 40 Serial pc(PG_2, PG_1); // Cam - mbed serial port
giryan 0:274eb57e1df3 41
wclin 2:6ee56c002f64 42 static volatile BOOL RxEnable, TxEnable; // Cam - keep a static copy of the RxEnable and TxEnable
giryan 0:274eb57e1df3 43 // status for the simulated ISR (ticker)
giryan 0:274eb57e1df3 44
giryan 0:274eb57e1df3 45
giryan 0:274eb57e1df3 46 /* ----------------------- Start implementation -----------------------------*/
giryan 0:274eb57e1df3 47 // Cam - This is called every 1mS to simulate Rx character received ISR and
giryan 0:274eb57e1df3 48 // Tx buffer empty ISR.
giryan 0:274eb57e1df3 49 static void
giryan 0:274eb57e1df3 50 prvvUARTISR( void )
giryan 0:274eb57e1df3 51 {
giryan 0:274eb57e1df3 52 if (TxEnable)
giryan 0:274eb57e1df3 53 if(pc.writeable())
giryan 0:274eb57e1df3 54 prvvUARTTxReadyISR();
giryan 0:274eb57e1df3 55
giryan 0:274eb57e1df3 56 if (RxEnable)
giryan 0:274eb57e1df3 57 if(pc.readable())
giryan 0:274eb57e1df3 58 prvvUARTRxISR();
giryan 0:274eb57e1df3 59 }
giryan 0:274eb57e1df3 60
giryan 0:274eb57e1df3 61 void
giryan 0:274eb57e1df3 62 vMBPortSerialEnable( BOOL xRxEnable, BOOL xTxEnable )
giryan 0:274eb57e1df3 63 {
giryan 0:274eb57e1df3 64 /* If xRXEnable enable serial receive interrupts. If xTxENable enable
giryan 0:274eb57e1df3 65 * transmitter empty interrupts.
giryan 0:274eb57e1df3 66 */
giryan 0:274eb57e1df3 67 RxEnable = xRxEnable;
giryan 0:274eb57e1df3 68 TxEnable = xTxEnable;
giryan 0:274eb57e1df3 69 }
giryan 0:274eb57e1df3 70
wclin 1:cfde7320b0bf 71 /* ----------------------- Start implementation -----------------------------*/
giryan 0:274eb57e1df3 72 BOOL
giryan 0:274eb57e1df3 73 xMBPortSerialInit( UCHAR ucPORT, ULONG ulBaudRate, UCHAR ucDataBits, eMBParity eParity )
giryan 0:274eb57e1df3 74 {
wclin 1:cfde7320b0bf 75 pc.baud(ulBaudRate);
wclin 1:cfde7320b0bf 76 return TRUE;
wclin 1:cfde7320b0bf 77 }
wclin 1:cfde7320b0bf 78
wclin 1:cfde7320b0bf 79 void xMBPortSerialPolling( void )
wclin 1:cfde7320b0bf 80 {
wclin 1:cfde7320b0bf 81 prvvUARTISR( );
wclin 1:cfde7320b0bf 82 }
wclin 1:cfde7320b0bf 83
giryan 0:274eb57e1df3 84 BOOL
giryan 0:274eb57e1df3 85 xMBPortSerialPutByte( CHAR ucByte )
giryan 0:274eb57e1df3 86 {
giryan 0:274eb57e1df3 87 /* Put a byte in the UARTs transmit buffer. This function is called
giryan 0:274eb57e1df3 88 * by the protocol stack if pxMBFrameCBTransmitterEmpty( ) has been
giryan 0:274eb57e1df3 89 * called. */
giryan 0:274eb57e1df3 90 pc.putc( ucByte);
giryan 0:274eb57e1df3 91 return TRUE;
giryan 0:274eb57e1df3 92 }
giryan 0:274eb57e1df3 93
giryan 0:274eb57e1df3 94 BOOL
giryan 0:274eb57e1df3 95 xMBPortSerialGetByte( CHAR * pucByte )
giryan 0:274eb57e1df3 96 {
giryan 0:274eb57e1df3 97 /* Return the byte in the UARTs receive buffer. This function is called
giryan 0:274eb57e1df3 98 * by the protocol stack after pxMBFrameCBByteReceived( ) has been called.
giryan 0:274eb57e1df3 99 */
wclin 2:6ee56c002f64 100 * pucByte = pc.getc();
giryan 0:274eb57e1df3 101 return TRUE;
giryan 0:274eb57e1df3 102 }
giryan 0:274eb57e1df3 103
giryan 0:274eb57e1df3 104 /* Create an interrupt handler for the transmit buffer empty interrupt
giryan 0:274eb57e1df3 105 * (or an equivalent) for your target processor. This function should then
giryan 0:274eb57e1df3 106 * call pxMBFrameCBTransmitterEmpty( ) which tells the protocol stack that
giryan 0:274eb57e1df3 107 * a new character can be sent. The protocol stack will then call
giryan 0:274eb57e1df3 108 * xMBPortSerialPutByte( ) to send the character.
giryan 0:274eb57e1df3 109 */
giryan 0:274eb57e1df3 110 static void prvvUARTTxReadyISR( void )
giryan 0:274eb57e1df3 111 {
giryan 0:274eb57e1df3 112 pxMBFrameCBTransmitterEmpty( );
giryan 0:274eb57e1df3 113 }
giryan 0:274eb57e1df3 114
giryan 0:274eb57e1df3 115 /* Create an interrupt handler for the receive interrupt for your target
giryan 0:274eb57e1df3 116 * processor. This function should then call pxMBFrameCBByteReceived( ). The
giryan 0:274eb57e1df3 117 * protocol stack will then call xMBPortSerialGetByte( ) to retrieve the
giryan 0:274eb57e1df3 118 * character.
giryan 0:274eb57e1df3 119 */
giryan 0:274eb57e1df3 120 static void prvvUARTRxISR( void )
giryan 0:274eb57e1df3 121 {
wclin 2:6ee56c002f64 122 vMBPortTimersDisable();
giryan 0:274eb57e1df3 123 pxMBFrameCBByteReceived( );
giryan 0:274eb57e1df3 124 }
giryan 0:274eb57e1df3 125
giryan 0:274eb57e1df3 126