modified for NuMaker_PFM series
Dependents: NuMaker-mbed-modbus-sample NuMaker_NuWicam_Lite NuMaker-mbed-modbus-sample
Fork of Modbus by
portserial.cpp@10:288aeae1458f, 2021-02-25 (annotated)
- Committer:
- cyliang
- Date:
- Thu Feb 25 15:36:09 2021 +0800
- Revision:
- 10:288aeae1458f
- Parent:
- 9:0c172c06e04d
- Child:
- 11:513c55a1b277
Change serial R/W method to fulfill OS v6.x API
Who changed what in which revision?
User | Revision | Line number | New 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" |
cyliang | 10:288aeae1458f | 31 | #if MBED_MAJOR_VERSION >= 6 |
cyliang | 10:288aeae1458f | 32 | #include "MyUnbufferedSerial.h" |
cyliang | 10:288aeae1458f | 33 | #endif |
giryan | 0:274eb57e1df3 | 34 | |
giryan | 0:274eb57e1df3 | 35 | /* ----------------------- static functions ---------------------------------*/ |
giryan | 0:274eb57e1df3 | 36 | static void prvvUARTTxReadyISR( void ); |
giryan | 0:274eb57e1df3 | 37 | static void prvvUARTRxISR( void ); |
giryan | 0:274eb57e1df3 | 38 | static void prvvUARTISR( void ); |
giryan | 0:274eb57e1df3 | 39 | |
giryan | 0:274eb57e1df3 | 40 | /* ----------------------- System Variables ---------------------------------*/ |
cyliang | 7:abafdf714896 | 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 | 8:456375d72644 | 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 | 9:0c172c06e04d | 48 | #elif defined(TARGET_NUMAKER_PFM_M487) // for M487 board |
wclin | 9:0c172c06e04d | 49 | NvtRS485 pc(PA_3, PA_2, PA_0); |
wclin | 9:0c172c06e04d | 50 | #warning "Notice: It has no RS485 port on NUMAKER-PFM-M487 board. |
wclin | 9:0c172c06e04d | 51 | #warning "But, you can connect with a RS485 daughter board to PA_3(TX), PA_2(RX) and PA_0(RTS) pin." |
wclin | 8:456375d72644 | 52 | #else |
wclin | 8:456375d72644 | 53 | #error "The demo code can't be executed on this board." |
wclin | 6:08849dd9654d | 54 | #endif |
wclin | 3:419ee4c5e10f | 55 | #else |
wclin | 6:08849dd9654d | 56 | //UART TX, RX |
wclin | 6:08849dd9654d | 57 | #if defined(TARGET_NUMAKER_PFM_NUC472) // for NUC472 board |
wclin | 6:08849dd9654d | 58 | Serial pc(PG_2, PG_1); |
wclin | 6:08849dd9654d | 59 | #elif defined(TARGET_NUMAKER_PFM_M453) // for M453 board |
wclin | 6:08849dd9654d | 60 | Serial pc(PD_1, PD_6); |
wclin | 8:456375d72644 | 61 | #elif defined(TARGET_NUMAKER_PFM_M487) // for M478 board |
wclin | 8:456375d72644 | 62 | Serial pc(PC_12, PC_11); |
wclin | 8:456375d72644 | 63 | #else |
wclin | 8:456375d72644 | 64 | #error "The demo code can't be executed on this board." |
wclin | 6:08849dd9654d | 65 | #endif |
wclin | 3:419ee4c5e10f | 66 | #endif |
giryan | 0:274eb57e1df3 | 67 | |
wclin | 2:6ee56c002f64 | 68 | static volatile BOOL RxEnable, TxEnable; // Cam - keep a static copy of the RxEnable and TxEnable |
giryan | 0:274eb57e1df3 | 69 | // status for the simulated ISR (ticker) |
giryan | 0:274eb57e1df3 | 70 | |
giryan | 0:274eb57e1df3 | 71 | |
giryan | 0:274eb57e1df3 | 72 | /* ----------------------- Start implementation -----------------------------*/ |
giryan | 0:274eb57e1df3 | 73 | // Cam - This is called every 1mS to simulate Rx character received ISR and |
giryan | 0:274eb57e1df3 | 74 | // Tx buffer empty ISR. |
giryan | 0:274eb57e1df3 | 75 | static void |
giryan | 0:274eb57e1df3 | 76 | prvvUARTISR( void ) |
giryan | 0:274eb57e1df3 | 77 | { |
wclin | 3:419ee4c5e10f | 78 | if ( TxEnable ) |
giryan | 0:274eb57e1df3 | 79 | if(pc.writeable()) |
giryan | 0:274eb57e1df3 | 80 | prvvUARTTxReadyISR(); |
wclin | 3:419ee4c5e10f | 81 | |
wclin | 3:419ee4c5e10f | 82 | if ( RxEnable ) |
giryan | 0:274eb57e1df3 | 83 | if(pc.readable()) |
wclin | 3:419ee4c5e10f | 84 | prvvUARTRxISR(); |
giryan | 0:274eb57e1df3 | 85 | } |
giryan | 0:274eb57e1df3 | 86 | |
giryan | 0:274eb57e1df3 | 87 | void |
giryan | 0:274eb57e1df3 | 88 | vMBPortSerialEnable( BOOL xRxEnable, BOOL xTxEnable ) |
giryan | 0:274eb57e1df3 | 89 | { |
giryan | 0:274eb57e1df3 | 90 | /* If xRXEnable enable serial receive interrupts. If xTxENable enable |
giryan | 0:274eb57e1df3 | 91 | * transmitter empty interrupts. |
giryan | 0:274eb57e1df3 | 92 | */ |
giryan | 0:274eb57e1df3 | 93 | RxEnable = xRxEnable; |
giryan | 0:274eb57e1df3 | 94 | TxEnable = xTxEnable; |
wclin | 3:419ee4c5e10f | 95 | |
wclin | 3:419ee4c5e10f | 96 | //printf("\r\nRx: %d, TX:%d\r\n", RxEnable, TxEnable); |
giryan | 0:274eb57e1df3 | 97 | } |
giryan | 0:274eb57e1df3 | 98 | |
wclin | 1:cfde7320b0bf | 99 | /* ----------------------- Start implementation -----------------------------*/ |
giryan | 0:274eb57e1df3 | 100 | BOOL |
giryan | 0:274eb57e1df3 | 101 | xMBPortSerialInit( UCHAR ucPORT, ULONG ulBaudRate, UCHAR ucDataBits, eMBParity eParity ) |
giryan | 0:274eb57e1df3 | 102 | { |
wclin | 1:cfde7320b0bf | 103 | pc.baud(ulBaudRate); |
cyliang | 7:abafdf714896 | 104 | #if defined(MBED_CONF_APP_DEF_RS485_PORT) && (MBED_CONF_APP_DEF_RS485_PORT) // mbed serial port |
wclin | 6:08849dd9654d | 105 | #if defined(TARGET_NUMAKER_PFM_NUC472) // for NUC472 board |
wclin | 3:419ee4c5e10f | 106 | pc.set_rs485_mode(PF_11); |
wclin | 6:08849dd9654d | 107 | #elif defined(TARGET_NUMAKER_PFM_M453) // for M453 board |
wclin | 6:08849dd9654d | 108 | pc.set_rs485_mode(PE_11); |
wclin | 9:0c172c06e04d | 109 | #elif defined(TARGET_NUMAKER_PFM_M487) // for M487 board |
wclin | 9:0c172c06e04d | 110 | pc.set_rs485_mode(PA_0); |
wclin | 9:0c172c06e04d | 111 | #endif |
wclin | 3:419ee4c5e10f | 112 | #endif |
cyliang | 10:288aeae1458f | 113 | #if 0 //MBED_MAJOR_VERSION >= 6 |
cyliang | 10:288aeae1458f | 114 | SerialBase::Parity parity; |
cyliang | 10:288aeae1458f | 115 | if (eParity == MB_PAR_NONE) |
cyliang | 10:288aeae1458f | 116 | parity = SerialBase::None; |
cyliang | 10:288aeae1458f | 117 | else if ( eParity == MB_PAR_ODD ) |
cyliang | 10:288aeae1458f | 118 | parity = SerialBase::Odd; |
cyliang | 10:288aeae1458f | 119 | else if ( eParity == MB_PAR_EVEN) |
cyliang | 10:288aeae1458f | 120 | parity = SerialBase::Even; |
cyliang | 10:288aeae1458f | 121 | pc.format( |
cyliang | 10:288aeae1458f | 122 | /* bits */ 8, |
cyliang | 10:288aeae1458f | 123 | /* parity */ parity, |
cyliang | 10:288aeae1458f | 124 | /* stop bit */ 1 |
cyliang | 10:288aeae1458f | 125 | ); |
cyliang | 10:288aeae1458f | 126 | #endif |
wclin | 1:cfde7320b0bf | 127 | return TRUE; |
wclin | 1:cfde7320b0bf | 128 | } |
wclin | 1:cfde7320b0bf | 129 | |
wclin | 1:cfde7320b0bf | 130 | void xMBPortSerialPolling( void ) |
wclin | 1:cfde7320b0bf | 131 | { |
wclin | 1:cfde7320b0bf | 132 | prvvUARTISR( ); |
wclin | 1:cfde7320b0bf | 133 | } |
wclin | 1:cfde7320b0bf | 134 | |
giryan | 0:274eb57e1df3 | 135 | BOOL |
giryan | 0:274eb57e1df3 | 136 | xMBPortSerialPutByte( CHAR ucByte ) |
giryan | 0:274eb57e1df3 | 137 | { |
giryan | 0:274eb57e1df3 | 138 | /* Put a byte in the UARTs transmit buffer. This function is called |
giryan | 0:274eb57e1df3 | 139 | * by the protocol stack if pxMBFrameCBTransmitterEmpty( ) has been |
giryan | 0:274eb57e1df3 | 140 | * called. */ |
wclin | 3:419ee4c5e10f | 141 | //printf("[%02x]", ucByte ); |
cyliang | 10:288aeae1458f | 142 | #if MBED_MAJOR_VERSION >= 6 |
cyliang | 10:288aeae1458f | 143 | pc.write(&ucByte, 1); |
cyliang | 10:288aeae1458f | 144 | #else |
giryan | 0:274eb57e1df3 | 145 | pc.putc( ucByte); |
cyliang | 10:288aeae1458f | 146 | #endif |
giryan | 0:274eb57e1df3 | 147 | return TRUE; |
giryan | 0:274eb57e1df3 | 148 | } |
giryan | 0:274eb57e1df3 | 149 | |
giryan | 0:274eb57e1df3 | 150 | BOOL |
giryan | 0:274eb57e1df3 | 151 | xMBPortSerialGetByte( CHAR * pucByte ) |
giryan | 0:274eb57e1df3 | 152 | { |
giryan | 0:274eb57e1df3 | 153 | /* Return the byte in the UARTs receive buffer. This function is called |
giryan | 0:274eb57e1df3 | 154 | * by the protocol stack after pxMBFrameCBByteReceived( ) has been called. |
giryan | 0:274eb57e1df3 | 155 | */ |
cyliang | 10:288aeae1458f | 156 | #if MBED_MAJOR_VERSION >= 6 |
cyliang | 10:288aeae1458f | 157 | pc.read(pucByte,1); |
cyliang | 10:288aeae1458f | 158 | #else |
wclin | 3:419ee4c5e10f | 159 | *pucByte = pc.getc(); |
cyliang | 10:288aeae1458f | 160 | #endif |
wclin | 3:419ee4c5e10f | 161 | //printf("<%02x>", *pucByte ); |
giryan | 0:274eb57e1df3 | 162 | return TRUE; |
giryan | 0:274eb57e1df3 | 163 | } |
giryan | 0:274eb57e1df3 | 164 | |
giryan | 0:274eb57e1df3 | 165 | /* Create an interrupt handler for the transmit buffer empty interrupt |
giryan | 0:274eb57e1df3 | 166 | * (or an equivalent) for your target processor. This function should then |
giryan | 0:274eb57e1df3 | 167 | * call pxMBFrameCBTransmitterEmpty( ) which tells the protocol stack that |
giryan | 0:274eb57e1df3 | 168 | * a new character can be sent. The protocol stack will then call |
giryan | 0:274eb57e1df3 | 169 | * xMBPortSerialPutByte( ) to send the character. |
giryan | 0:274eb57e1df3 | 170 | */ |
giryan | 0:274eb57e1df3 | 171 | static void prvvUARTTxReadyISR( void ) |
giryan | 0:274eb57e1df3 | 172 | { |
giryan | 0:274eb57e1df3 | 173 | pxMBFrameCBTransmitterEmpty( ); |
giryan | 0:274eb57e1df3 | 174 | } |
giryan | 0:274eb57e1df3 | 175 | |
giryan | 0:274eb57e1df3 | 176 | /* Create an interrupt handler for the receive interrupt for your target |
giryan | 0:274eb57e1df3 | 177 | * processor. This function should then call pxMBFrameCBByteReceived( ). The |
giryan | 0:274eb57e1df3 | 178 | * protocol stack will then call xMBPortSerialGetByte( ) to retrieve the |
giryan | 0:274eb57e1df3 | 179 | * character. |
giryan | 0:274eb57e1df3 | 180 | */ |
giryan | 0:274eb57e1df3 | 181 | static void prvvUARTRxISR( void ) |
giryan | 0:274eb57e1df3 | 182 | { |
wclin | 2:6ee56c002f64 | 183 | vMBPortTimersDisable(); |
giryan | 0:274eb57e1df3 | 184 | pxMBFrameCBByteReceived( ); |
giryan | 0:274eb57e1df3 | 185 | } |
giryan | 0:274eb57e1df3 | 186 | |
giryan | 0:274eb57e1df3 | 187 |