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752 lines
25 KiB
C++
752 lines
25 KiB
C++
/*
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* Copyright (c) 2009 Mark Rages
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* Copyright (c) 2011 Mark Liversedge (liversedge@gmail.com)
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc., 51
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* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "ANT.h"
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#include <QDebug>
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static float timeout_blanking=2.0; // time before reporting stale data, seconds
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static float timeout_drop=2.0; // time before reporting dropped message
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static float timeout_scan=10.0; // time to do initial scan
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static float timeout_lost=30.0; // time to do more thorough scan
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ANTChannel::ANTChannel(int number, ANT *parent) : parent(parent), number(number)
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{
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init();
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}
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void
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ANTChannel::init()
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{
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channel_type=CHANNEL_TYPE_UNUSED;
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channel_type_flags=0;
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is_cinqo=0;
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is_old_cinqo=0;
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is_alt=0;
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control_channel=NULL;
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manufacturer_id=0;
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product_id=0;
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product_version=0;
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device_number=0;
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device_id=0;
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channel_assigned=0;
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state=ANT_UNASSIGN_CHANNEL;
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blanked=1;
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messages_received=0;
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messages_dropped=0;
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setId();
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srm_offset=400; // default relatively arbitrary, but matches common 'indoors' values
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burstInit();
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value2=value=0;
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}
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//
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// channel id is in the form nnnnx where nnnn is the device number
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// and x is the channel type (p)ower, (c) adence etc the full list
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// can be found in ANT.cpp when initialising ant_sensor_types
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//
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void ANTChannel::setId()
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{
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if (channel_type==CHANNEL_TYPE_UNUSED) {
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strcpy(id, "none");
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} else {
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snprintf(id, 10, "%d%c", device_number, parent->ant_sensor_types[channel_type].suffix);
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}
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}
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// The description of the device
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const char * ANTChannel::getDescription()
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{
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return parent->ant_sensor_types[channel_type].descriptive_name;
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}
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// Get device type
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int ANTChannel::interpretDescription(char *description)
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{
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const ant_sensor_type_t *st=parent->ant_sensor_types;
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do {
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if (0==strcmp(st->descriptive_name,description))
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return st->type;
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} while (++st, st->type != CHANNEL_TYPE_GUARD);
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return -1;
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}
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// Open an ant channel assignment.
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void ANTChannel::open(int device, int chan_type)
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{
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channel_type=chan_type;
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channel_type_flags = CHANNEL_TYPE_QUICK_SEARCH ;
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device_number=device;
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setId();
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attemptTransition(ANT_UNASSIGN_CHANNEL);
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}
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// close an ant channel assignment
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void ANTChannel::close()
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{
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emit lostInfo(number);
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lastMessage = ANTMessage();
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parent->sendMessage(ANTMessage::close(number));
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init();
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}
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//
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// The main read loop is in ANT.cpp, it will pass us
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// the inbound message received for our channel.
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void ANTChannel::receiveMessage(unsigned char *ant_message)
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{
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switch (ant_message[2]) {
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case ANT_CHANNEL_EVENT:
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channelEvent(ant_message);
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break;
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case ANT_BROADCAST_DATA:
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broadcastEvent(ant_message);
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break;
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case ANT_ACK_DATA:
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ackEvent(ant_message);
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break;
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case ANT_CHANNEL_ID:
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channelId(ant_message);
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break;
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case ANT_BURST_DATA:
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burstData(ant_message);
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break;
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default:
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break; //errors silently ignored for now, would indicate hardware fault.
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}
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if (get_timestamp() > blanking_timestamp + timeout_blanking) {
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if (!blanked) {
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blanked=1;
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value2=value=0;
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emit staleInfo(number);
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}
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} else blanked=0;
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}
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// process a channel event message
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// would be good to refactor to use ANTMessage at some point
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// but not compelling reason to do so at this point and might
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// break existing code.
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void ANTChannel::channelEvent(unsigned char *ant_message) {
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unsigned char *message=ant_message+2;
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//qDebug()<<"channel event:"<< ANTMessage::channelEventMessage(*(message+1));
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if (MESSAGE_IS_RESPONSE_NO_ERROR(message)) {
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attemptTransition(RESPONSE_NO_ERROR_MESSAGE_ID(message));
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} else if (MESSAGE_IS_EVENT_CHANNEL_CLOSED(message)) {
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parent->sendMessage(ANTMessage::unassignChannel(number));
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} else if (MESSAGE_IS_EVENT_RX_SEARCH_TIMEOUT(message)) {
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// timeouts are normal for search channel
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if (channel_type_flags & CHANNEL_TYPE_QUICK_SEARCH) {
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channel_type_flags &= ~CHANNEL_TYPE_QUICK_SEARCH;
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channel_type_flags |= CHANNEL_TYPE_WAITING;
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emit searchTimeout(number);
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} else {
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emit lostInfo(number);
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// Don't wipe out the channel settings when the search times out,
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// else can not reconnect to the device once back in range..
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//channel_type=CHANNEL_TYPE_UNUSED;
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//channel_type_flags=0;
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//device_number=0;
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//value2=value=0;
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//setId();
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parent->sendMessage(ANTMessage::unassignChannel(number));
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}
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} else if (MESSAGE_IS_EVENT_RX_FAIL(message)) {
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messages_dropped++;
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double t=get_timestamp();
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if (t > (last_message_timestamp + timeout_drop)) {
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if (channel_type != CHANNEL_TYPE_UNUSED) emit dropInfo(number, messages_dropped, messages_received);
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// this is a hacky way to prevent the drop message from sending multiple times
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last_message_timestamp+=2*timeout_drop;
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}
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} else if (MESSAGE_IS_EVENT_RX_ACKNOWLEDGED(message)) {
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exit(-10);
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} else if (MESSAGE_IS_EVENT_TRANSFER_TX_COMPLETED(message)) {
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// do nothing
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}
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}
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// if this is a quarq cinqo then record that fact
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// was probably interesting to quarqd, but less so for us!
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void ANTChannel::checkCinqo()
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{
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int version_hi, version_lo;
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version_hi=(product_version >> 8) &0xff;
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version_lo=(product_version & 0xff);
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if (!(mi.first_time_manufacturer || mi.first_time_product)) {
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if ((product_id == 1) && (manufacturer_id==7)) {
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// we are a cinqo, were we aware of this?
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is_cinqo=1;
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// are we an old-version or new-version cinqo?
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is_old_cinqo = ((version_hi <= 17) && (version_lo==10));
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}
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}
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}
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// notify we have a cinqo, does nothing
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void ANTChannel::sendCinqoSuccess() {}
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//
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// We got a broadcast event -- this is where inbound
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// telemetry gets processed, and for many message types
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// we need to remember previous messages to look at the
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// deltas during the period
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//
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void ANTChannel::broadcastEvent(unsigned char *ant_message)
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{
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ANTMessage antMessage(parent, ant_message);
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bool savemessage = true; // flag to stop lastmessage being
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// overwritten for standard power
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// messages
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unsigned char *message=ant_message+2;
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double timestamp=get_timestamp();
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messages_received++;
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last_message_timestamp=timestamp;
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if (messages_received <= 1) {
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// this is mega important! -- when we get broadcast data from a device
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// we ask it to identify itself, then when the channel id message is
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// received we set our channel id to that received. So, if the message
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// below is not sent, we will never set channel properly.
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// The recent bug with not being able to "pair" intermittently, was caused
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// by the write below failing (and any write really, but the one below being
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// pretty critical) -- because the USB stick needed a USB reset which we know
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// do every time we open the USB device
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parent->sendMessage(ANTMessage::requestMessage(number, ANT_CHANNEL_ID));
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blanking_timestamp=get_timestamp();
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blanked=0;
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return; // because we can't associate a channel id with the message yet
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}
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// for automatically opening quarq channel on early cinqo
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if (MESSAGE_IS_PRODUCT(message)) {
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mi.first_time_product= false;
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product_version&=0x00ff;
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product_version|=(PRODUCT_SW_REV(message))<<8;
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checkCinqo();
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} else if (MESSAGE_IS_MANUFACTURER(message)) {
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mi.first_time_manufacturer= false;
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product_version&=0xff00;
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product_version|=MANUFACTURER_HW_REV(message);
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manufacturer_id=MANUFACTURER_MANUFACTURER_ID(message);
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product_id=MANUFACTURER_MODEL_NUMBER_ID(message);
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checkCinqo();
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} else {
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//
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// We got some telemetry on this channel
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//
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if (lastMessage.type != 0) {
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switch (channel_type) {
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// Power
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case CHANNEL_TYPE_POWER:
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case CHANNEL_TYPE_QUARQ:
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case CHANNEL_TYPE_FAST_QUARQ:
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case CHANNEL_TYPE_FAST_QUARQ_NEW:
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// what kind of power device is this?
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switch(antMessage.data_page) {
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case ANT_SPORT_CALIBRATION_MESSAGE:
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{
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// Always ack calibs unless they are acks too!
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if (antMessage.data[6] != 0xAC) {
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antMessage.data[6] = 0xAC;
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parent->sendMessage(antMessage);
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}
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// each device sends a different type
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// of calibration message...
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switch (antMessage.calibrationID) {
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case ANT_SPORT_SRM_CALIBRATIONID:
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switch (antMessage.ctfID) {
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case 0x01: // offset
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// if we're getting calibration messages then
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// we should be coasting, so power and cadence
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// will be zero
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srm_offset = antMessage.srmOffset;
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is_alt ? parent->setAltWatts(0) : parent->setWatts(0);
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parent->setCadence(0);
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value2=value=0;
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break;
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case 0x02: // slope
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break;
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case 0x03: // serial number
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break;
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default:
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break;
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}
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break;
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default:
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break;
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}
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} // ANT_SPORT_CALIBRATION
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savemessage = false; // we don't want to overwrite other messages
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break;
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//
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// SRM - crank torque frequency
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//
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case ANT_CRANKSRM_POWER: // 0x20 - crank torque (SRM)
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{
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uint16_t period = antMessage.period - lastMessage.period;
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uint16_t torque = antMessage.torque - lastMessage.torque;
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float time = (float)period / (float)2000.00;
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if (time && antMessage.slope && period) {
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nullCount = 0;
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float torque_freq = torque / time - 420/*srm_offset*/;
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float nm_torque = 10.0 * torque_freq / antMessage.slope;
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float cadence = 2000.0 * 60 * (antMessage.eventCount - lastMessage.eventCount) / period;
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float power = 3.14159 * nm_torque * cadence / 30;
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// ignore the occassional spikes (reed switch)
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if (power >= 0 && power < 2501 && cadence >=0 && cadence < 256) {
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value2 = value = power;
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is_alt ? parent->setAltWatts(power) : parent->setWatts(power);
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parent->setCadence(cadence);
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}
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} else {
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nullCount++;
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if (nullCount >= 4) { // 4 messages on an SRM
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value2 = value = 0;
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is_alt ? parent->setAltWatts(0) : parent->setWatts(0);
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parent->setCadence(0);
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}
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}
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}
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break;
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//
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// Powertap - wheel torque
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//
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case ANT_WHEELTORQUE_POWER: // 0x11 - wheel torque (Powertap)
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{
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uint8_t events = antMessage.eventCount - lastMessage.eventCount;
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uint16_t period = antMessage.period - lastMessage.period;
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uint16_t torque = antMessage.torque - lastMessage.torque;
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if (events && period) {
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nullCount = 0;
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float nm_torque = torque / (32.0 * events);
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float wheelRPM = 2048.0 * 60.0 * events / period;
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float power = 3.14159 * nm_torque * wheelRPM / 30;
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value2 = value = power;
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parent->setWheelRpm(wheelRPM);
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is_alt ? parent->setAltWatts(power) : parent->setWatts(power);
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} else {
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nullCount++;
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if (nullCount >= 4) { // 4 messages on Powertap according to specs
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parent->setWheelRpm(0);
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value2 = value = 0;
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is_alt ? parent->setAltWatts(0) : parent->setWatts(0);
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}
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}
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}
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break;
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//
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// Standard Power - interleaved with other messages 1 per second
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// NOTE: Standard power messages are interleaved
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// with other power broadcast messages and so
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// we need to make sure lastmessage is NOT
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// updated with this message and instead we
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// store in a special lastStdPwrMessage
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//
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case ANT_STANDARD_POWER: // 0x10 - standard power
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{
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uint8_t events = antMessage.eventCount - lastStdPwrMessage.eventCount;
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if (lastStdPwrMessage.type && events) {
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stdNullCount = 0;
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is_alt ? parent->setAltWatts(antMessage.instantPower) : parent->setWatts(antMessage.instantPower);
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value2 = value = antMessage.instantPower;
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parent->setCadence(antMessage.instantCadence); // cadence
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} else {
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stdNullCount++;
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if (stdNullCount >= 6) { //6 for standard power according to specs
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parent->setCadence(0);
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is_alt ? parent->setAltWatts(0) : parent->setWatts(0);
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value2 = value = 0;
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}
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}
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lastStdPwrMessage = antMessage;
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savemessage = false;
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}
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break;
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//
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// Quarq - Crank torque
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//
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case ANT_CRANKTORQUE_POWER: // 0x12 - crank torque (Quarq)
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{
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uint8_t events = antMessage.eventCount - lastMessage.eventCount;
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uint16_t period = antMessage.period - lastMessage.period;
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uint16_t torque = antMessage.torque - lastMessage.torque;
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if (events && period && lastMessage.period) {
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nullCount = 0;
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float nm_torque = torque / (32.0 * events);
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float cadence = 2048.0 * 60.0 * events / period;
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float power = 3.14159 * nm_torque * cadence / 30;
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parent->setCadence(cadence);
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is_alt ? parent->setAltWatts(power) : parent->setWatts(power);
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value2 = value = power;
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} else {
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nullCount++;
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if (nullCount >= 4) { // 4 on a quarq according to specs
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parent->setCadence(0);
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is_alt ? parent->setAltWatts(0) : parent->setWatts(0);
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value2 = value = 0;
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}
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}
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}
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break;
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default: // UNKNOWN
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break;
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}
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break;
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// HR
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case CHANNEL_TYPE_HR:
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{
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// cadence first...
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uint16_t time = antMessage.measurementTime - lastMessage.measurementTime;
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if (time) {
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nullCount = 0;
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parent->setBPM(antMessage.instantHeartrate);
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value2 = value = antMessage.instantHeartrate;
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// lets emit a signal for collected HR R-R data
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emit rrData(antMessage.measurementTime, antMessage.heartrateBeats, antMessage.instantHeartrate);
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} else {
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nullCount++;
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if (nullCount >= 12) {
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parent->setBPM(0); // 12 according to the docs
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value2 = value = 0;
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}
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}
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}
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break;
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// Cadence
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case CHANNEL_TYPE_CADENCE:
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{
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uint16_t time = antMessage.crankMeasurementTime - lastMessage.crankMeasurementTime;
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uint16_t revs = antMessage.crankRevolutions - lastMessage.crankRevolutions;
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if (time) {
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float cadence = 1024*60*revs / time;
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parent->setCadence(cadence);
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value2 = value = cadence;
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}
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}
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break;
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// Speed and Cadence
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case CHANNEL_TYPE_SandC:
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{
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// cadence first...
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uint16_t time = antMessage.crankMeasurementTime - lastMessage.crankMeasurementTime;
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uint16_t revs = antMessage.crankRevolutions - lastMessage.crankRevolutions;
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if (time) {
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nullCount = 0;
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float cadence = 1024*60*revs / time;
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parent->setCadence(cadence);
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value = cadence;
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} else {
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nullCount++;
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if (nullCount >= 12) { parent->setCadence(0);
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value = 0;
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}
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}
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// now speed ...
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|
time = antMessage.wheelMeasurementTime - lastMessage.wheelMeasurementTime;
|
|
revs = antMessage.wheelRevolutions - lastMessage.wheelRevolutions;
|
|
if (time) {
|
|
dualNullCount = 0;
|
|
|
|
float rpm = 1024*60*revs / time;
|
|
parent->setWheelRpm(rpm);
|
|
value2 = rpm;
|
|
} else {
|
|
|
|
dualNullCount++;
|
|
if (dualNullCount >= 12) {
|
|
parent->setWheelRpm(0);
|
|
value2 = 0;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
// Speed
|
|
case CHANNEL_TYPE_SPEED:
|
|
{
|
|
uint16_t time = antMessage.wheelMeasurementTime - lastMessage.wheelMeasurementTime;
|
|
uint16_t revs = antMessage.wheelRevolutions - lastMessage.wheelRevolutions;
|
|
if (time) {
|
|
nullCount=0;
|
|
float rpm = 1024*60*revs / time;
|
|
parent->setWheelRpm(rpm);
|
|
value2=value=rpm;
|
|
} else {
|
|
nullCount++;
|
|
if (nullCount >= 12) parent->setWheelRpm(0);
|
|
value2=value=0;
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break; // unknown?
|
|
}
|
|
|
|
} else {
|
|
|
|
// reset nullCount if receiving first telemetry update
|
|
stdNullCount = dualNullCount = nullCount = 0;
|
|
value2 = value = 0;
|
|
}
|
|
|
|
// we don't overwrite for Standard Power messages
|
|
// these are maintained separately in lastStdPwrMessage
|
|
if (savemessage) lastMessage = antMessage;
|
|
}
|
|
}
|
|
|
|
// we got an acknowledgement, so lets process it
|
|
// does nothing for now
|
|
void ANTChannel::ackEvent(unsigned char * /*ant_message*/) { }
|
|
|
|
|
|
// we got a channel ID notification
|
|
void ANTChannel::channelId(unsigned char *ant_message) {
|
|
|
|
unsigned char *message=ant_message+2;
|
|
|
|
device_number=CHANNEL_ID_DEVICE_NUMBER(message);
|
|
device_id=CHANNEL_ID_DEVICE_TYPE_ID(message);
|
|
state=MESSAGE_RECEIVED;
|
|
emit channelInfo(number, device_number, device_id);
|
|
setId();
|
|
|
|
// if we were searching,
|
|
if (channel_type_flags & CHANNEL_TYPE_QUICK_SEARCH) {
|
|
parent->sendMessage(ANTMessage::setSearchTimeout(number, (int)(timeout_lost/2.5)));
|
|
}
|
|
channel_type_flags &= ~CHANNEL_TYPE_QUICK_SEARCH;
|
|
}
|
|
|
|
// get ready to burst
|
|
void ANTChannel::burstInit() {
|
|
rx_burst_data_index=0;
|
|
rx_burst_next_sequence=0;
|
|
rx_burst_disposition=NULL;
|
|
}
|
|
|
|
// are we in the middle of a search?
|
|
int ANTChannel::isSearching() {
|
|
return ((channel_type_flags & (CHANNEL_TYPE_WAITING | CHANNEL_TYPE_QUICK_SEARCH)) || (state != MESSAGE_RECEIVED));
|
|
}
|
|
|
|
|
|
// receive burst data
|
|
void ANTChannel::burstData(unsigned char *ant_message) {
|
|
|
|
unsigned char *message=ant_message+2;
|
|
char seq=(message[1]>>5)&0x3;
|
|
char last=(message[1]>>7)&0x1;
|
|
const unsigned char next_sequence[4]={1,2,3,1};
|
|
|
|
if (seq!=rx_burst_next_sequence) {
|
|
// we don't handle burst data at present.
|
|
} else {
|
|
|
|
int len=ant_message[ANT_OFFSET_LENGTH]-3;
|
|
|
|
if ((rx_burst_data_index + len)>(RX_BURST_DATA_LEN)) {
|
|
len = RX_BURST_DATA_LEN-rx_burst_data_index;
|
|
}
|
|
|
|
rx_burst_next_sequence=next_sequence[(int)seq];
|
|
memcpy(rx_burst_data+rx_burst_data_index, message+2, len);
|
|
rx_burst_data_index+=len;
|
|
}
|
|
|
|
if (last) {
|
|
if (rx_burst_disposition) {
|
|
// we don't handle burst data at present.
|
|
}
|
|
burstInit();
|
|
}
|
|
}
|
|
|
|
// choose this one..
|
|
void ANTChannel::setChannelID(int device_number, int device_id, int /*txtype*/)
|
|
{
|
|
parent->sendMessage(ANTMessage::setChannelID(number, device_number, device_id, 0)); // lets go back to allowing anything
|
|
parent->sendMessage(ANTMessage::open(number)); // lets go back to allowing anything
|
|
}
|
|
|
|
void ANTChannel::attemptTransition(int message_id)
|
|
{
|
|
|
|
const ant_sensor_type_t *st;
|
|
int previous_state=state;
|
|
st=&(parent->ant_sensor_types[channel_type]);
|
|
|
|
// update state
|
|
state=message_id;
|
|
|
|
// do transitions
|
|
switch (state) {
|
|
|
|
case ANT_CLOSE_CHANNEL:
|
|
// next step is unassign and start over
|
|
// but we must wait until event_channel_closed
|
|
// which is its own channel event
|
|
state=MESSAGE_RECEIVED;
|
|
break;
|
|
|
|
case ANT_UNASSIGN_CHANNEL:
|
|
channel_assigned=0;
|
|
|
|
// lets make sure this channel is assigned to our network
|
|
// regardless of its current state.
|
|
parent->sendMessage(ANTMessage::unassignChannel(number)); // unassign whatever we had before
|
|
|
|
// reassign to whatever we need!
|
|
parent->sendMessage(ANTMessage::assignChannel(number, 0, st->network)); // recieve channel on network 1
|
|
device_id=st->device_id;
|
|
parent->sendMessage(ANTMessage::setChannelID(number, 0, device_id, 0)); // lets go back to allowing anything
|
|
setId();
|
|
break;
|
|
|
|
case ANT_ASSIGN_CHANNEL:
|
|
channel_assigned=1;
|
|
parent->sendMessage(ANTMessage::setChannelID(number, device_number, device_id, 0));
|
|
break;
|
|
|
|
case ANT_CHANNEL_ID:
|
|
if (channel_type & CHANNEL_TYPE_QUICK_SEARCH) {
|
|
parent->sendMessage(ANTMessage::setSearchTimeout(number, (int)(timeout_scan/2.5)));
|
|
} else {
|
|
parent->sendMessage(ANTMessage::setSearchTimeout(number, (int)(timeout_lost/2.5)));
|
|
}
|
|
break;
|
|
|
|
case ANT_SEARCH_TIMEOUT:
|
|
if (previous_state==ANT_CHANNEL_ID) {
|
|
// continue down the intialization chain
|
|
parent->sendMessage(ANTMessage::setChannelPeriod(number, st->period));
|
|
} else {
|
|
// we are setting the ant_search timeout after connected
|
|
// we'll just pretend this never happened
|
|
state=previous_state;
|
|
}
|
|
break;
|
|
|
|
case ANT_CHANNEL_PERIOD:
|
|
parent->sendMessage(ANTMessage::setChannelFreq(number, st->frequency));
|
|
break;
|
|
|
|
case ANT_CHANNEL_FREQUENCY:
|
|
parent->sendMessage(ANTMessage::open(number));
|
|
mi.initialise();
|
|
break;
|
|
|
|
case ANT_OPEN_CHANNEL:
|
|
parent->sendMessage(ANTMessage::open(number));
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
// set channel timeout
|
|
void ANTChannel::setTimeout(int seconds)
|
|
{
|
|
parent->sendMessage(ANTMessage::setSearchTimeout(number, seconds/2.5));
|
|
}
|
|
|
|
// Calibrate... needs fixing in version 3.1
|
|
// request the device on this channel calibrates itselt
|
|
void ANTChannel::requestCalibrate() {
|
|
parent->sendMessage(ANTMessage::requestCalibrate(number));
|
|
}
|