import numpy as np
import utils
import constants as c
from kinematics import Kinematics, getInitialPlatformHeight
trans = [0, 0, 0]
rot = [-5, 5, 0]
base_anchor = utils.getAllBaseAnchor()
platform_anchor = utils.getAllPlatformAnchor()
beta_k = c.BETA_K
kin = Kinematics()
alpha = []
for i in range(6):
alpha.append(
kin.inverse_kinematics(trans, rot, base_anchor[i], platform_anchor[i],
beta_k[i]))
# print(base_anchor)
# print(platform_anchor)
# print(beta_k)
print(', '.join(str(x) for x in np.array(alpha) - np.array(c.REST_ANGLE)))
'''
+5 deg about x - SOUTH
[16.28929038, 17.3132488, 1.57780453, -1.42523919, -16.94926673, -16.62537064]
-5 deg about x - NORTH
[-16.33266239, -17.09930114, -1.54961138, 1.47727662, 17.42187392, 16.48079246]
+5 deg about y - EAST
[-10.95487981, -8.22894901, 20.40388639, 18.90780741, -8.19305569, -11.24629653]
class Connector():
def __init__(self, parent, com_port, baud_rate, max_tries=10):
self.connected = False
self.parent = parent
self.kinematics = Kinematics()
self.comport = com_port
self.baud_rate = baud_rate
self.ser = self.connect(com_port, baud_rate, max_tries)
if self.ser is None:
p = multiprocessing.Process(target=self.retryConnect)
p.start()
self.stateObservers: [StateObserver] = []
self.textObservers: [TextObserver] = []
self.legStateObservers: [LegStateObserver] = []
self.requestState()
def connect(self, comport, baudrate, max_tries):
try:
ser = serial.Serial(comport, baudrate)
except:
return None
ser.write(b'5173')
x = ''
counter = 0
while '5173' not in x:
if counter >= max_tries:
print("Error: Maximum tries to establish connection exceeded")
return None
if ser.inWaiting() > 0:
x = ser.readline().decode('utf-8')
time.sleep(0.1)
counter += 1
print("Connection established")
self.connected = True
return ser
def retryConnect(self):
while self.ser is None:
time.sleep(5)
self.ser = self.connect(self.comport, self.baud_rate, 10)
self.requestState()
def writeInterpolatedMotion(self, jointValues, duration=1000):
if self.has_connection():
valueStrings = [str(value) for value in jointValues]
valueString = 'r' + ';'.join(valueStrings) + ';' + str(duration)
self.ser.write(valueString.encode('utf-8'))
def writeAngles(self, jointValues):
if self.has_connection():
valueStrings = [str(value) for value in jointValues]
valueString = 'x' + ';'.join(valueStrings) + ";100"
self.ser.write(valueString.encode('utf-8'))
def shift_point_of_mass(self, x, y, z, duration=300):
self.writeAngles(self.kinematics.shift_point_of_mass(x, y, z))
def writeCommand(self, cmd: str):
if self.has_connection():
self.ser.write(cmd.encode('utf-8'))
def write_coords(self, coords: tuple, interpolate=False, duration=None):
angles = self.kinematics.inverse_kinematics(coords)
if interpolate:
if duration is not None:
self.writeInterpolatedMotion(angles, duration)
else:
self.writeInterpolatedMotion(angles)
else:
self.writeAngles(angles)
self.parent.single_tick()
def write_leg_coords(self, coords: tuple, leg):
angles = self.kinematics.inverse_leg(coords, leg)
self.writeAngles(angles)
def checkForData(self):
try:
bytesToRead = self.ser.inWaiting()
if bytesToRead > 0:
readString = self.ser.readline().decode("utf-8")
if readString.startswith("t"):
self.notifyText(readString[1:])
else:
currentState = [
float(x) for x in readString.split(';')[0:-1]
]
self.notifyState(currentState)
self.notifyLegState(self.kinematics.forward(currentState))
return True
else:
return False
except serial.SerialException:
self.connected = False
p = multiprocessing.Process(target=self.retryConnect)
p.start()
return False
def requestState(self):
if self.has_connection():
self.ser.write(b's ')
def has_connection(self):
return self.connected
def registerLegState(self, observer: LegStateObserver):
self.legStateObservers.append(observer)
def unregisterLegStateObserver(self, observer: LegStateObserver):
self.legStateObservers.remove(observer)
def registerState(self, observer: StateObserver):
self.stateObservers.append(observer)
def unregisterState(self, observer: StateObserver):
self.stateObservers.remove(observer)
def registerText(self, observer: TextObserver):
self.textObservers.append(observer)
def unregisterText(self, observer: TextObserver):
self.textObservers.remove(observer)
def notifyState(self, values):
[x.connectorCallback(values) for x in self.stateObservers]
def notifyText(self, value):
[x.connectorCallback(value) for x in self.textObservers]
def notifyLegState(self, values):
[x.connectorCallback(values) for x in self.legStateObservers]
def set_kinematics(self, kinematics):
self.kinematics = kinematics
