Added beginnings of getting motor control working from within ROS. Current launch file and tester node work and make the motor movegit status!

This commit is contained in:
2018-02-03 17:12:15 -08:00
parent bb8bae2f55
commit 940d2782c3
13 changed files with 1067 additions and 0 deletions

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<component name="editorHistoryManager">
<entry file="file://$PROJECT_DIR$/src/rover_drive_node.py">
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cmake_minimum_required(VERSION 2.8.3)
project(rover_drive)
## Compile as C++11, supported in ROS Kinetic and newer
# add_compile_options(-std=c++11)
## Find catkin macros and libraries
## if COMPONENTS list like find_package(catkin REQUIRED COMPONENTS xyz)
## is used, also find other catkin packages
find_package(catkin REQUIRED COMPONENTS
rospy
std_msgs
message_generation
)
## System dependencies are found with CMake's conventions
# find_package(Boost REQUIRED COMPONENTS system)
## Uncomment this if the package has a setup.py. This macro ensures
## modules and global scripts declared therein get installed
## See http://ros.org/doc/api/catkin/html/user_guide/setup_dot_py.html
# catkin_python_setup()
################################################
## Declare ROS messages, services and actions ##
################################################
## To declare and build messages, services or actions from within this
## package, follow these steps:
## * Let MSG_DEP_SET be the set of packages whose message types you use in
## your messages/services/actions (e.g. std_msgs, actionlib_msgs, ...).
## * In the file package.xml:
## * add a build_depend tag for "message_generation"
## * add a build_depend and a run_depend tag for each package in MSG_DEP_SET
## * If MSG_DEP_SET isn't empty the following dependency has been pulled in
## but can be declared for certainty nonetheless:
## * add a run_depend tag for "message_runtime"
## * In this file (CMakeLists.txt):
## * add "message_generation" and every package in MSG_DEP_SET to
## find_package(catkin REQUIRED COMPONENTS ...)
## * add "message_runtime" and every package in MSG_DEP_SET to
## catkin_package(CATKIN_DEPENDS ...)
## * uncomment the add_*_files sections below as needed
## and list every .msg/.srv/.action file to be processed
## * uncomment the generate_messages entry below
## * add every package in MSG_DEP_SET to generate_messages(DEPENDENCIES ...)
## Generate messages in the 'msg' folder
add_message_files(
FILES
RoverMotorDrive.msg
)
## Generate services in the 'srv' folder
# add_service_files(
# FILES
# Service1.srv
# Service2.srv
# )
## Generate actions in the 'action' folder
# add_action_files(
# FILES
# Action1.action
# Action2.action
# )
## Generate added messages and services with any dependencies listed here
generate_messages(
DEPENDENCIES
std_msgs # Or other packages containing msgs
)
################################################
## Declare ROS dynamic reconfigure parameters ##
################################################
## To declare and build dynamic reconfigure parameters within this
## package, follow these steps:
## * In the file package.xml:
## * add a build_depend and a run_depend tag for "dynamic_reconfigure"
## * In this file (CMakeLists.txt):
## * add "dynamic_reconfigure" to
## find_package(catkin REQUIRED COMPONENTS ...)
## * uncomment the "generate_dynamic_reconfigure_options" section below
## and list every .cfg file to be processed
## Generate dynamic reconfigure parameters in the 'cfg' folder
# generate_dynamic_reconfigure_options(
# cfg/DynReconf1.cfg
# cfg/DynReconf2.cfg
# )
###################################
## catkin specific configuration ##
###################################
## The catkin_package macro generates cmake config files for your package
## Declare things to be passed to dependent projects
## INCLUDE_DIRS: uncomment this if your package contains header files
## LIBRARIES: libraries you create in this project that dependent projects also need
## CATKIN_DEPENDS: catkin_packages dependent projects also need
## DEPENDS: system dependencies of this project that dependent projects also need
catkin_package(
# INCLUDE_DIRS include
# LIBRARIES rover_drive
# CATKIN_DEPENDS rospy
# DEPENDS system_lib
)
###########
## Build ##
###########
## Specify additional locations of header files
## Your package locations should be listed before other locations
include_directories(
# include
${catkin_INCLUDE_DIRS}
)
## Declare a C++ library
# add_library(${PROJECT_NAME}
# src/${PROJECT_NAME}/rover_drive.cpp
# )
## Add cmake target dependencies of the library
## as an example, code may need to be generated before libraries
## either from message generation or dynamic reconfigure
# add_dependencies(${PROJECT_NAME} ${${PROJECT_NAME}_EXPORTED_TARGETS} ${catkin_EXPORTED_TARGETS})
## Declare a C++ executable
## With catkin_make all packages are built within a single CMake context
## The recommended prefix ensures that target names across packages don't collide
# add_executable(${PROJECT_NAME}_node src/rover_drive_node.cpp)
## Rename C++ executable without prefix
## The above recommended prefix causes long target names, the following renames the
## target back to the shorter version for ease of user use
## e.g. "rosrun someones_pkg node" instead of "rosrun someones_pkg someones_pkg_node"
# set_target_properties(${PROJECT_NAME}_node PROPERTIES OUTPUT_NAME node PREFIX "")
## Add cmake target dependencies of the executable
## same as for the library above
# add_dependencies(${PROJECT_NAME}_node ${${PROJECT_NAME}_EXPORTED_TARGETS} ${catkin_EXPORTED_TARGETS})
## Specify libraries to link a library or executable target against
# target_link_libraries(${PROJECT_NAME}_node
# ${catkin_LIBRARIES}
# )
#############
## Install ##
#############
# all install targets should use catkin DESTINATION variables
# See http://ros.org/doc/api/catkin/html/adv_user_guide/variables.html
## Mark executable scripts (Python etc.) for installation
## in contrast to setup.py, you can choose the destination
# install(PROGRAMS
# scripts/my_python_script
# DESTINATION ${CATKIN_PACKAGE_BIN_DESTINATION}
# )
## Mark executables and/or libraries for installation
# install(TARGETS ${PROJECT_NAME} ${PROJECT_NAME}_node
# ARCHIVE DESTINATION ${CATKIN_PACKAGE_LIB_DESTINATION}
# LIBRARY DESTINATION ${CATKIN_PACKAGE_LIB_DESTINATION}
# RUNTIME DESTINATION ${CATKIN_PACKAGE_BIN_DESTINATION}
# )
## Mark cpp header files for installation
# install(DIRECTORY include/${PROJECT_NAME}/
# DESTINATION ${CATKIN_PACKAGE_INCLUDE_DESTINATION}
# FILES_MATCHING PATTERN "*.h"
# PATTERN ".svn" EXCLUDE
# )
## Mark other files for installation (e.g. launch and bag files, etc.)
# install(FILES
# # myfile1
# # myfile2
# DESTINATION ${CATKIN_PACKAGE_SHARE_DESTINATION}
# )
#############
## Testing ##
#############
## Add gtest based cpp test target and link libraries
# catkin_add_gtest(${PROJECT_NAME}-test test/test_rover_drive.cpp)
# if(TARGET ${PROJECT_NAME}-test)
# target_link_libraries(${PROJECT_NAME}-test ${PROJECT_NAME})
# endif()
## Add folders to be run by python nosetests
# catkin_add_nosetests(test)

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@@ -0,0 +1,8 @@
<launch>
<group ns="drive">
<node name="" pkg="rover_drive" type="rover_drive_node.py" launch-prefix="taskset -c 5" output="screen">
<param name="port" value="/dev/ttyUSB0"/>
<param name="baud" value="2000000"/>
</node>
</group>
</launch>

View File

@@ -0,0 +1,7 @@
bool first_motor_direction
bool first_motor_sleep
uint16 first_motor_speed
bool second_motor_direction
bool second_motor_sleep
uint16 second_motor_speed

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@@ -0,0 +1,65 @@
<?xml version="1.0"?>
<package format="2">
<name>rover_drive</name>
<version>0.0.0</version>
<description>The rover_drive package</description>
<!-- One maintainer tag required, multiple allowed, one person per tag -->
<!-- Example: -->
<!-- <maintainer email="jane.doe@example.com">Jane Doe</maintainer> -->
<maintainer email="caperren@todo.todo">caperren</maintainer>
<!-- One license tag required, multiple allowed, one license per tag -->
<!-- Commonly used license strings: -->
<!-- BSD, MIT, Boost Software License, GPLv2, GPLv3, LGPLv2.1, LGPLv3 -->
<license>TODO</license>
<!-- Url tags are optional, but multiple are allowed, one per tag -->
<!-- Optional attribute type can be: website, bugtracker, or repository -->
<!-- Example: -->
<!-- <url type="website">http://wiki.ros.org/rover_drive</url> -->
<!-- Author tags are optional, multiple are allowed, one per tag -->
<!-- Authors do not have to be maintainers, but could be -->
<!-- Example: -->
<!-- <author email="jane.doe@example.com">Jane Doe</author> -->
<!-- The *depend tags are used to specify dependencies -->
<!-- Dependencies can be catkin packages or system dependencies -->
<!-- Examples: -->
<!-- Use depend as a shortcut for packages that are both build and exec dependencies -->
<!-- <depend>roscpp</depend> -->
<!-- Note that this is equivalent to the following: -->
<!-- <build_depend>roscpp</build_depend> -->
<!-- <exec_depend>roscpp</exec_depend> -->
<!-- Use build_depend for packages you need at compile time: -->
<build_depend>message_generation</build_depend>
<!-- Use build_export_depend for packages you need in order to build against this package: -->
<!-- <build_export_depend>message_generation</build_export_depend> -->
<!-- Use buildtool_depend for build tool packages: -->
<!-- <buildtool_depend>catkin</buildtool_depend> -->
<!-- Use exec_depend for packages you need at runtime: -->
<exec_depend>message_runtime</exec_depend>
<!-- Use test_depend for packages you need only for testing: -->
<!-- <test_depend>gtest</test_depend> -->
<!-- Use doc_depend for packages you need only for building documentation: -->
<!-- <doc_depend>doxygen</doc_depend> -->
<buildtool_depend>catkin</buildtool_depend>
<build_depend>rospy</build_depend>
<build_depend>std_msgs</build_depend>
<build_export_depend>rospy</build_export_depend>
<build_export_depend>std_msgs</build_export_depend>
<exec_depend>rospy</exec_depend>
<exec_depend>std_msgs</exec_depend>
<!-- The export tag contains other, unspecified, tags -->
<export>
<!-- Other tools can request additional information be placed here -->
</export>
</package>

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@@ -0,0 +1,104 @@
#!/usr/bin/env python
#####################################
# Imports
#####################################
# Python native imports
import serial.rs485
import minimalmodbus
import time
import rospy
from rover_drive.msg import RoverMotorDrive
# Custom Imports
#####################################
# Global Variables
#####################################
NODE_NAME = "rover_drive"
DEFAULT_PORT = "/dev/ttyUSB0"
DEFAULT_BAUD = 2000000
MOTOR_TOPIC = "motoroneandtwo"
FIRST_MOTOR_ID = 1
SECOND_MOTOR_ID = 2
COMMUNICATIONS_TIMEOUT = 0.3 # Seconds
MOTOR_DRIVERS_DIRECTION = {
"FORWARDS": 1,
"BACKWARDS": 0
}
MOTOR_DRIVER_REGISTER_MAP = {
"DIRECTION": 0,
"SPEED": 1
}
MOTOR_DRIVER_DEFAULT_MESSAGE = [
MOTOR_DRIVERS_DIRECTION["FORWARDS"],
0
]
#####################################
# RoverDrive Class Definition
#####################################
class RoverDrive(object):
def __init__(self):
rospy.init_node(NODE_NAME)
self.port = rospy.get_param("port", DEFAULT_PORT)
self.baud = rospy.get_param("baud", DEFAULT_BAUD)
self.first_motor_modbus_id = rospy.get_param("first_motor_modbus_id", FIRST_MOTOR_ID)
self.second_motor_modbus_id = rospy.get_param("second_motor_modbus_id", SECOND_MOTOR_ID)
self.motors_subscriber_topic = rospy.get_param("topic", MOTOR_TOPIC)
self.first_motor = minimalmodbus.Instrument(self.port, self.first_motor_modbus_id)
self.second_motor = minimalmodbus.Instrument(self.port, self.second_motor_modbus_id)
self.motors_subscriber = rospy.Subscriber(MOTOR_TOPIC, RoverMotorDrive, self.__motor_message_callback)
self.__setup_minimalmodbus_for_485()
self.run()
def run(self):
while not rospy.is_shutdown():
time.sleep(0.25)
# try:
# self.first_motor.write_register(1, 10000)
# except IOError, error:
# pass
#
# try:
# self.second_motor.write_register(1, 30000)
# except IOError, error:
# pass
def __setup_minimalmodbus_for_485(self):
self.first_motor.serial = serial.rs485.RS485(self.port, baudrate=self.baud, timeout=COMMUNICATIONS_TIMEOUT)
self.first_motor.serial.rs485_mode = \
serial.rs485.RS485Settings(rts_level_for_rx=1, rts_level_for_tx=0, delay_before_rx=0, delay_before_tx=0)
self.second_motor.serial = serial.rs485.RS485(self.port, baudrate=self.baud, timeout=COMMUNICATIONS_TIMEOUT)
self.second_motor.serial.rs485_mode = \
serial.rs485.RS485Settings(rts_level_for_rx=1, rts_level_for_tx=0, delay_before_rx=0, delay_before_tx=0)
def __motor_message_callback(self, data):
first_motor_register_data = list(MOTOR_DRIVER_DEFAULT_MESSAGE) # Makes a copy
first_motor_register_data[MOTOR_DRIVER_REGISTER_MAP["DIRECTION"]] = int(data.first_motor_direction)
first_motor_register_data[MOTOR_DRIVER_REGISTER_MAP["SPEED"]] = data.first_motor_speed
print first_motor_register_data
self.first_motor.write_registers(0, first_motor_register_data)
#####################################
# Main Definition
#####################################
if __name__ == "__main__":
drive = RoverDrive()

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@@ -0,0 +1,31 @@
import rospy
import time
from rover_drive.msg import RoverMotorDrive
rospy.init_node("drive_tester")
pub = rospy.Publisher("/drive/motoroneandtwo", RoverMotorDrive, queue_size=10)
speed_step = 500
last_dir = 0
sleep_time = 0.01
while not rospy.is_shutdown():
drive = RoverMotorDrive()
last_dir = not last_dir
for i in range(0, 65535, speed_step):
drive.first_motor_direction = last_dir
drive.first_motor_speed = i
pub.publish(drive)
time.sleep(sleep_time)
print i
for i in range(65535, 0, -speed_step):
drive.first_motor_direction = last_dir
drive.first_motor_speed = i
pub.publish(drive)
time.sleep(sleep_time)
print i