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/* |
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* AtiFTSensor.cpp |
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* |
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* Created on: Oct 22, 2013 |
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* Author: righetti |
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*/ |
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#include <errno.h> |
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#include <unistd.h> |
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#include <string> |
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#include <cstdio> |
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#ifdef XENOMAI |
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#include <rtnet.h> |
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#include <native/timer.h> |
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#else |
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// Define xenomai like API for normal linux using defines. |
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#define rt_dev_socket socket |
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#define rt_dev_ioctl ioctl |
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#define rt_dev_close close |
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#define rt_dev_setsockopt setsockopt |
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#define rt_dev_bind bind |
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#define rt_dev_recv recv |
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#define rt_dev_recvmsg recvmsg |
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#define rt_dev_send send |
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#define rt_dev_sendto sendto |
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#define rt_dev_connect connect |
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#define rt_mutex_acquire(mutex, d) ((mutex)->lock()) |
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#define rt_mutex_release(mutex) ((mutex)->unlock()) |
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#endif |
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#include <AtiFTSensor.h> |
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namespace ati_ft_sensor |
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{ |
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AtiFTSensor::AtiFTSensor() |
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{ |
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initialized_ = false; |
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} |
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bool AtiFTSensor::initialize() |
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{ |
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if(initialized_) |
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{ |
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printf("warning already initialized\n"); |
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return true; |
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} |
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printf("initializing\n"); |
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//init some values |
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for(int i=0; i<3; ++i) |
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{ |
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F_bias_[i] = 0.0; |
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T_bias_[i] = 0.0; |
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} |
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initialized_ = false; |
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going_ = true; |
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streaming_ = false; |
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//setup the networking sockets |
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memset(&local_address_, 0, sizeof(struct sockaddr_in)); |
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memset(&remote_address_, 0, sizeof(struct sockaddr_in)); |
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local_address_.sin_family = AF_INET; |
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local_address_.sin_addr.s_addr = INADDR_ANY; |
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local_address_.sin_port = htons(49152); |
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remote_address_.sin_family = AF_INET; |
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inet_aton("192.168.4.1",&(remote_address_.sin_addr)); |
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remote_address_.sin_port = htons(49152); |
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socket_ = rt_dev_socket(AF_INET, SOCK_DGRAM, 0); |
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if(socket_<0) |
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{ |
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printf("cannot create socket, error %d, %s\n",errno, strerror(errno)); |
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return false; |
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} |
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if(rt_dev_bind(socket_, (struct sockaddr *) &local_address_, sizeof(struct sockaddr_in)) < 0) |
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{ |
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printf("cannot bind socket, error: %d, %s", errno, strerror(errno)); |
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return false; |
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} |
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if(rt_dev_connect(socket_, (struct sockaddr *) &remote_address_, sizeof(struct sockaddr_in)) < 0) |
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{ |
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printf("cannot connect socket, error: %d, %s", errno, strerror(errno)); |
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return false; |
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} |
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printf("created sockets\n"); |
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#ifdef XENOMAI |
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if(rt_pipe_create(&stream_pipe_, "ati_ft_stream",P_MINOR_AUTO,0)) |
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{ |
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printf("cannot create pipe, error: %d, %s", errno, strerror(errno)); |
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return false; |
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} |
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//create mutex for the threads |
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rt_mutex_create(&mutex_,NULL); |
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#endif |
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//now create the reading thread |
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reading_thread_.create_realtime_thread( |
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&ati_ft_sensor::AtiFTSensor::read_ft, this); |
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initialized_ = true; |
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return initialized_; |
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} |
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void AtiFTSensor::read_ft() |
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{ |
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//send message to start streaming |
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send_msg msg; |
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msg.command_header = htons(0x1234); |
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msg.command = htons(0x0002); |
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msg.sample_count = 0; |
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rt_dev_send(socket_, &msg, sizeof(msg), 0); |
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//some internal variables |
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bool internal_going = true; |
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#ifdef XENOMAI |
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RTIME time1, time2; |
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time2 = rt_timer_read(); |
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#endif |
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//the main reading loop |
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while(internal_going) |
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{ |
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#ifdef XENOMAI |
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time1 = rt_timer_read(); |
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#endif |
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//read the socket |
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received_msg rcv_msg; |
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ssize_t response = rt_dev_recv(socket_, &rcv_msg, sizeof(rcv_msg), 0); |
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if(response != sizeof(rcv_msg)) |
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{ |
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printf("Received message of unexpected length %ld\n", response); |
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} |
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//update state / first get the byte order right |
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rt_mutex_acquire(&mutex_,TM_INFINITE); |
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rdt_sequence_ = ntohl(rcv_msg.rdt_sequence); |
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ft_sequence_ = ntohl(rcv_msg.ft_sequence); |
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status_ = ntohl(rcv_msg.status); |
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rcv_msg.Fx = ntohl(rcv_msg.Fx); |
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rcv_msg.Fy = ntohl(rcv_msg.Fy); |
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rcv_msg.Fz = ntohl(rcv_msg.Fz); |
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rcv_msg.Tx = ntohl(rcv_msg.Tx); |
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rcv_msg.Ty = ntohl(rcv_msg.Ty); |
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rcv_msg.Tz = ntohl(rcv_msg.Tz); |
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F_[0] = double(rcv_msg.Fx)/count_per_force_ - F_bias_[0]; |
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F_[1] = double(rcv_msg.Fy)/count_per_force_ - F_bias_[1]; |
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F_[2] = double(rcv_msg.Fz)/count_per_force_ - F_bias_[2]; |
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T_[0] = double(rcv_msg.Tx)/count_per_torque_ - T_bias_[0]; |
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T_[1] = double(rcv_msg.Ty)/count_per_torque_ - T_bias_[1]; |
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T_[2] = double(rcv_msg.Tz)/count_per_torque_ - T_bias_[2]; |
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//if streaming mode, copy to pipe |
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if(streaming_) |
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{ |
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#ifdef XENOMAI |
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steaming_msg log; |
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log.rdt_seq = rdt_sequence_; |
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log.ft_seq = ft_sequence_; |
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log.status = status_; |
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for(int i=0; i<3; ++i) |
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{ |
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log.F[i] = F_[i]; |
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log.T[i] = T_[i]; |
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} |
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log.time = double(time1-time2)/10e9; |
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time2 = time1; |
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rt_pipe_write(&stream_pipe_,&log,sizeof(log), P_NORMAL); |
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#else |
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printf("Streaming is only supported on xenomai.\n"); |
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exit(-1); |
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#endif |
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} |
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internal_going = going_; |
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rt_mutex_release(&mutex_); |
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} |
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//stop streaming |
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msg.command = 0x0000; |
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rt_dev_send(socket_, &msg, sizeof(msg), 0); |
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} |
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void AtiFTSensor::setBias() |
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{ |
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double* force = NULL; |
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double* torque = NULL; |
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setBias(force, torque); |
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} |
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void AtiFTSensor::setBias(double* force, double* torque) |
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{ |
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rt_mutex_acquire(&mutex_,TM_INFINITE); |
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for(int i=0; i<3; ++i) { |
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if (force == NULL) { |
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F_bias_[i] = F_[i]; |
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} else { |
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F_bias_[i] = force[i]; |
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} |
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if (torque == NULL) { |
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T_bias_[i] = T_[i]; |
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} else { |
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T_bias_[i] = torque[i]; |
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} |
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} |
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rt_mutex_release(&mutex_); |
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} |
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void AtiFTSensor::resetBias() |
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{ |
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rt_mutex_acquire(&mutex_,TM_INFINITE); |
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for(int i=0; i<3; ++i) |
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{ |
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F_bias_[i] = 0.; |
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T_bias_[i] = 0.; |
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} |
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rt_mutex_release(&mutex_); |
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} |
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void AtiFTSensor::getStatus(uint32_t& rdt_seq, uint32_t& ft_seq, uint32_t& status) |
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{ |
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rt_mutex_acquire(&mutex_,TM_INFINITE); |
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rdt_seq = rdt_sequence_; |
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ft_seq = ft_sequence_; |
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status = status_; |
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rt_mutex_release(&mutex_); |
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} |
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void AtiFTSensor::getFT(double* force, double* torque) |
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{ |
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rt_mutex_acquire(&mutex_,TM_INFINITE); |
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for(int i=0; i<3; ++i) |
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{ |
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force[i] = F_[i]; |
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torque[i] = T_[i]; |
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} |
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rt_mutex_release(&mutex_); |
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} |
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void AtiFTSensor::stop() |
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{ |
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if(initialized_) |
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{ |
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rt_mutex_acquire(&mutex_,TM_INFINITE); |
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going_ = false; |
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rt_mutex_release(&mutex_); |
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reading_thread_.join(); |
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rt_dev_close(socket_); |
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#ifdef XENOMAI |
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rt_pipe_delete(&stream_pipe_); |
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#endif |
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initialized_ = false; |
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} |
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} |
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void AtiFTSensor::stream(bool stream) |
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{ |
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rt_mutex_acquire(&mutex_,TM_INFINITE); |
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streaming_ = stream; |
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rt_mutex_release(&mutex_); |
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} |
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AtiFTSensor::~AtiFTSensor() |
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{ |
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stop(); |
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} |
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✓✗✓✗
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} |