164 lines
4.7 KiB
C++
164 lines
4.7 KiB
C++
/*
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; Project: Open Vehicle Monitor System
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; Module: CAN dump framework
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; Date: 18th January 2018
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;
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; (C) 2018 Mark Webb-Johnson
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;
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; Permission is hereby granted, free of charge, to any person obtaining a copy
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; of this software and associated documentation files (the "Software"), to deal
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; in the Software without restriction, including without limitation the rights
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; to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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; copies of the Software, and to permit persons to whom the Software is
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; furnished to do so, subject to the following conditions:
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;
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; The above copyright notice and this permission notice shall be included in
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; all copies or substantial portions of the Software.
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;
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; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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; IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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; FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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; AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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; LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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; OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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; THE SOFTWARE.
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*/
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#include "ovms_log.h"
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static const char *TAG = "canformat-lawicel";
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#include <errno.h>
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#include "pcp.h"
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#include "canformat_lawicel.h"
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////////////////////////////////////////////////////////////////////////
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// Initialisation and Registration
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////////////////////////////////////////////////////////////////////////
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class OvmsCanFormatLawicelInit
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{
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public: OvmsCanFormatLawicelInit();
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} MyOvmsCanFormatLawicelTInit __attribute__ ((init_priority (4505)));
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OvmsCanFormatLawicelInit::OvmsCanFormatLawicelInit()
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{
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ESP_LOGI(TAG, "Registering CAN Format: LAWICEL (4505)");
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MyCanFormatFactory.RegisterCanFormat<canformat_lawicel>("lawicel");
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}
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////////////////////////////////////////////////////////////////////////
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// Base GVRET implementation (utility)
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////////////////////////////////////////////////////////////////////////
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canformat_lawicel::canformat_lawicel(const char* type)
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: canformat(type)
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{
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}
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canformat_lawicel::~canformat_lawicel()
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{
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}
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std::string canformat_lawicel::get(CAN_log_message_t* message)
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{
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char buf[CANFORMAT_LAWICEL_MAXLEN];
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if ((message->type != CAN_LogFrame_RX)&&
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(message->type != CAN_LogFrame_TX))
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{
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return std::string("");
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}
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if (message->frame.FIR.B.FF == CAN_frame_std)
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{
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sprintf(buf,"t%03x%01d",message->frame.MsgID, message->frame.FIR.B.DLC);
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}
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else
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{
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sprintf(buf,"T%08x%01d",message->frame.MsgID, message->frame.FIR.B.DLC);
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}
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for (int k=0; k<message->frame.FIR.B.DLC; k++)
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sprintf(buf+strlen(buf),"%02x", message->frame.data.u8[k]);
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sprintf(buf+strlen(buf),"%04lx", message->timestamp.tv_usec/1000);
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strcat(buf,"\n");
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return std::string(buf);
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}
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std::string canformat_lawicel::getheader(struct timeval *time)
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{
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return std::string("");
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}
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size_t canformat_lawicel::put(CAN_log_message_t* message, uint8_t *buffer, size_t len, bool* hasmore, canlogconnection* clc)
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{
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if (m_buf.FreeSpace()==0) SetServeDiscarding(true); // Buffer full, so discard from now on
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if (IsServeDiscarding()) return len; // Quick return if discarding
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size_t consumed = Stuff(buffer,len); // Stuff m_buf with as much as possible
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if (m_buf.HasLine()<0)
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{
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return consumed; // No line, so quick exit
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}
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else
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{
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*hasmore = true; // Call us again to see if we have more frames to process
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std::string line = m_buf.ReadLine();
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const char *b = line.c_str();
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char hex[9];
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// We look for something like
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// t100401020304000a
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if (*b == 't')
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{
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// Standard frame
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memcpy(hex,b+1,3);
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hex[3] = 0;
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message->type = CAN_LogFrame_RX;
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message->frame.FIR.B.FF = CAN_frame_std;
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message->frame.MsgID = strtol(hex,NULL,16);
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b += 4;
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}
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else if (*b == 'T')
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{
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// Extended frame
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memcpy(hex,b+1,8);
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hex[8] = 0;
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message->type = CAN_LogFrame_RX;
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message->frame.FIR.B.FF = CAN_frame_ext;
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message->frame.MsgID = strtol(hex,NULL,16);
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b += 9;
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}
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else
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{
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// Unknown format - discard
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return consumed; // Discard invalid line
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}
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message->frame.FIR.B.DLC = *b - '0';
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if (message->frame.FIR.B.DLC > 8)
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{
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// Invalid length - discard
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return consumed; // Discard invalid line
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}
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b++;
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for (size_t x=0;x<message->frame.FIR.B.DLC;x++)
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{
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hex[0] = b[0];
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hex[1] = b[2];
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hex[2] = 0;
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b += 2;
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message->frame.data.u8[x] = (uint8_t)strtol(hex,NULL,16);
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}
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gettimeofday(&message->timestamp,NULL);
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message->origin = MyCan.GetBus(0);
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return consumed;
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}
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}
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