Rajit Singh / Mbed OS Modbus

Port of the FreeModbus Libary for mbed, copied from https://developer.mbed.org/users/cam/code/Modbus/ and upgraded to mbed 5

Dependents:   NUCLEO-F401-printf

porttimer.cpp@1:3e360cf155b6, 2017-08-16 (annotated)

Committer:
Rajit Singh
Date:
Wed Aug 16 17:31:26 2017 +0100
Revision:
1:3e360cf155b6
Parent:
0:9db3bed8fffd 
Remove main.cpp

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Rajit Singh 0:9db3bed8fffd 1 /*
Rajit Singh 0:9db3bed8fffd 2 * FreeModbus Libary: BARE Port
Rajit Singh 0:9db3bed8fffd 3 * Copyright (C) 2006 Christian Walter <wolti@sil.at>
Rajit Singh 0:9db3bed8fffd 4 *
Rajit Singh 0:9db3bed8fffd 5 * This library is free software; you can redistribute it and/or
Rajit Singh 0:9db3bed8fffd 6 * modify it under the terms of the GNU Lesser General Public
Rajit Singh 0:9db3bed8fffd 7 * License as published by the Free Software Foundation; either
Rajit Singh 0:9db3bed8fffd 8 * version 2.1 of the License, or (at your option) any later version.
Rajit Singh 0:9db3bed8fffd 9 *
Rajit Singh 0:9db3bed8fffd 10 * This library is distributed in the hope that it will be useful,
Rajit Singh 0:9db3bed8fffd 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
Rajit Singh 0:9db3bed8fffd 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Rajit Singh 0:9db3bed8fffd 13 * Lesser General Public License for more details.
Rajit Singh 0:9db3bed8fffd 14 *
Rajit Singh 0:9db3bed8fffd 15 * You should have received a copy of the GNU Lesser General Public
Rajit Singh 0:9db3bed8fffd 16 * License along with this library; if not, write to the Free Software
Rajit Singh 0:9db3bed8fffd 17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Rajit Singh 0:9db3bed8fffd 18 *
Rajit Singh 0:9db3bed8fffd 19 * File: $Id: porttimer.c,v 1.1 2006/08/22 21:35:13 wolti Exp $
Rajit Singh 0:9db3bed8fffd 20 */
Rajit Singh 0:9db3bed8fffd 21
Rajit Singh 0:9db3bed8fffd 22 /* ----------------------- System includes ----------------------------------*/
Rajit Singh 0:9db3bed8fffd 23 #include "mbed.h" // Cam
Rajit Singh 0:9db3bed8fffd 24
Rajit Singh 0:9db3bed8fffd 25 /* ----------------------- Platform includes --------------------------------*/
Rajit Singh 0:9db3bed8fffd 26 #include "port.h"
Rajit Singh 0:9db3bed8fffd 27
Rajit Singh 0:9db3bed8fffd 28 /* ----------------------- Modbus includes ----------------------------------*/
Rajit Singh 0:9db3bed8fffd 29 #include "mb.h"
Rajit Singh 0:9db3bed8fffd 30 #include "mbport.h"
Rajit Singh 0:9db3bed8fffd 31
Rajit Singh 0:9db3bed8fffd 32 /* ----------------------- static functions ---------------------------------*/
Rajit Singh 0:9db3bed8fffd 33 static void prvvTIMERExpiredISR( void );
Rajit Singh 0:9db3bed8fffd 34
Rajit Singh 0:9db3bed8fffd 35 /* ----------------------- System Variables ---------------------------------*/
Rajit Singh 0:9db3bed8fffd 36 Timeout toMBUS; // Cam - mbed timeout
Rajit Singh 0:9db3bed8fffd 37 static ULONG usInterval; // Cam - timeout interval in microseconds
Rajit Singh 0:9db3bed8fffd 38
Rajit Singh 0:9db3bed8fffd 39 /* ----------------------- Start implementation -----------------------------*/
Rajit Singh 0:9db3bed8fffd 40 BOOL
Rajit Singh 0:9db3bed8fffd 41 xMBPortTimersInit( USHORT usTim1Timerout50us )
Rajit Singh 0:9db3bed8fffd 42 {
Rajit Singh 0:9db3bed8fffd 43 usInterval = 50 * usTim1Timerout50us;
Rajit Singh 0:9db3bed8fffd 44 return TRUE;
Rajit Singh 0:9db3bed8fffd 45 }
Rajit Singh 0:9db3bed8fffd 46
Rajit Singh 0:9db3bed8fffd 47
Rajit Singh 0:9db3bed8fffd 48 /*inline*/ void
Rajit Singh 0:9db3bed8fffd 49 vMBPortTimersEnable( )
Rajit Singh 0:9db3bed8fffd 50 {
Rajit Singh 0:9db3bed8fffd 51 /* Enable the timer with the timeout passed to xMBPortTimersInit( ) */
Rajit Singh 0:9db3bed8fffd 52
Rajit Singh 0:9db3bed8fffd 53 // Cam - firstly detach from any existing timeout
Rajit Singh 0:9db3bed8fffd 54 toMBUS.detach();
Rajit Singh 0:9db3bed8fffd 55 // Cam - now attach the timeout to the prvvTIMERExpiredISR routine
Rajit Singh 0:9db3bed8fffd 56 toMBUS.attach_us(&prvvTIMERExpiredISR, usInterval);
Rajit Singh 0:9db3bed8fffd 57 }
Rajit Singh 0:9db3bed8fffd 58
Rajit Singh 0:9db3bed8fffd 59 /*inline*/ void
Rajit Singh 0:9db3bed8fffd 60 vMBPortTimersDisable( )
Rajit Singh 0:9db3bed8fffd 61 {
Rajit Singh 0:9db3bed8fffd 62 /* Disable any pending timers. */
Rajit Singh 0:9db3bed8fffd 63
Rajit Singh 0:9db3bed8fffd 64 // Cam - disable further interrupts by detaching
Rajit Singh 0:9db3bed8fffd 65 toMBUS.detach();
Rajit Singh 0:9db3bed8fffd 66 }
Rajit Singh 0:9db3bed8fffd 67
Rajit Singh 0:9db3bed8fffd 68 /* Create an ISR which is called whenever the timer has expired. This function
Rajit Singh 0:9db3bed8fffd 69 * must then call pxMBPortCBTimerExpired( ) to notify the protocol stack that
Rajit Singh 0:9db3bed8fffd 70 * the timer has expired.
Rajit Singh 0:9db3bed8fffd 71 */
Rajit Singh 0:9db3bed8fffd 72 static void prvvTIMERExpiredISR( void )
Rajit Singh 0:9db3bed8fffd 73 {
Rajit Singh 0:9db3bed8fffd 74 ( void )pxMBPortCBTimerExpired( );
Rajit Singh 0:9db3bed8fffd 75 // Cam - disable further interrupts by detaching
Rajit Singh 0:9db3bed8fffd 76 toMBUS.detach();
Rajit Singh 0:9db3bed8fffd 77 }
Rajit Singh 0:9db3bed8fffd 78