![](/media/cache/profiles/IMG_2753.JPG.50x50_q85.jpg)
Can_open_masternode
framework/driver/mbed/can_mbed.cpp
- Committer:
- sam_grove
- Date:
- 2012-09-26
- Revision:
- 7:537bae5a6fc6
- Parent:
- 0:9dd7c6129683
File content as of revision 7:537bae5a6fc6:
/* This file is part of CanFestival, a library implementing CanOpen Stack. Copyright (C): Edouard TISSERANT and Francis DUPIN mbed Port: sgrove See COPYING file for copyrights details. This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ //#define DEBUG_WAR_CONSOLE_ON //#define DEBUG_ERR_CONSOLE_ON #include "can_mbed.h" #include "canfestival.h" volatile unsigned char msg_received = 0; // initialize the CAN object from the mbed api CAN CANopen(p9, p10); unsigned char canInit(unsigned int bitrate) /****************************************************************************** Initialize the hardware to send and receive CAN messages INPUT bitrate bitrate in kilobit OUTPUT 1 if successful ******************************************************************************/ { // make sure the requested baudrate is supported if (CANopen.frequency(bitrate*1000) == 0){ return 0; } // desired baud was set return 1; } unsigned char canSend(CAN_PORT notused, Message *m) /****************************************************************************** The driver send a CAN message passed from the CANopen stack INPUT CAN_PORT is not used (only 1 avaiable) Message *m pointer to message to send OUTPUT 1 if hardware -> CAN frame ******************************************************************************/ { // convert the message from a CANopen object to a mbed object CANMessage msg(m->cob_id, (char*)m->data, m->len, static_cast<CANType>(m->rtr), CANStandard); // make sure the message was sent if (CANopen.write(msg) == 0){ return 0; } // message was sent return 1; } unsigned char canReceive(Message *m) /****************************************************************************** The driver pass a received CAN message to the stack INPUT Message *m pointer to received CAN message OUTPUT 1 if a message received ******************************************************************************/ { // object to store the last message CANMessage msg; // look if something has been rec'd if (CANopen.read(msg) == 0){ return 0; } // conver the CANMessage object to a Message object m->cob_id = msg.id; m->len = msg.len; m->rtr = static_cast<UNS8>(msg.type); // clear erroneous data from the stack for (int i=0; i<=7; i++){ if ((msg.len-1) >= i) m->data[i] = msg.data[i]; else m->data[i] = 0; } return 1; } /***************************************************************************/ unsigned char canChangeBaudRate_driver( CAN_HANDLE fd, char* baud) { // not sure how baud is passed as a char* yet return 0; }