fix(ConveyorApi):Fix the problem that no data is returned (#167)

* add MyCobot 280 X5PI API

* add MyCobot 280 X5 PI doc

* Fix MyCobot 280 X5 Pi doc errors

* add MyCobot 280 X5 PI sokcet sever&client

* MyCobot 280 X5 PI server compatible with python2

* rename MyCobot280x5pi to MyCobot280RDKX5

* fix MyArmMControl bugs

* fix MyArmC bugs

* fix myArmM&C demo bug

* update M&C demo

* fix MyCobot280 rdkx5 bug

* fix MyArmM&C bugs

* fix bugs

* fix bug

* fix ThreeHand api bug

* Fixed the issue that Pro630 could not read data

* fix MyArmM bug

* MyArmM&C adds get_joints_coord interface

* fix Pro630 bug

* fix Pro630 bugs

* Fixed the pro630 socket communication bug

* Optimize MyCobot280 RDK X5 interface parameter error prompt

* Optimized the way MyAGV reads MCU data

* feat(myagvpro): add myagvpro api

* fix(ConveyorApi):Fix the problem that no data is returned

---------

Co-authored-by: Mrkun5018 <76215701+Mrkun5018@users.noreply.github.com>

Author: K-Shuffler

pymycobot/conveyor_api.py

@@ -2,7 +2,18 @@
 import threading
 import time
 import struct
-from serial import Serial
+import serial
+
+
+def setup_serial_connect(port, baudrate, timeout=None):
+    serial_api = serial.Serial()
+    serial_api.port = port
+    serial_api.baudrate = baudrate
+    serial_api.timeout = timeout
+    serial_api.rts = False
+    serial_api.dtr = False
+    serial_api.open()
+    return serial_api
 
 
 class CommandGenre(object):
@@ -40,7 +51,7 @@ def get_params(self):
         return self.__params[0] if self.__length == 1 else self.__params
 
     def __str__(self):
-        return " ".join(map(lambda bit: hex(bit).upper(), self.to_bytes()))
+        return ' '.join(f'{x:02x}' for x in self.to_bytes())
 
     def __bytes__(self):
         return self.to_bytes()
@@ -69,7 +80,6 @@ def unpack_args(cls, *parameters):
                 bits_pack_list.extend(list(pair))
             else:
                 bits_pack_list.clear()
-        print(bits_pack_list)
         return bits_pack_list
 
     @classmethod
@@ -100,9 +110,7 @@ def __init__(self, comport, baudrate, timeout=0.5):
         self._comport = comport
         self._baudrate = baudrate
         self._timeout = timeout
-        self._serial_port = Serial(port=comport, baudrate=baudrate, timeout=timeout)
-        self._serial_port.rts = True
-        self._serial_port.dtr = True
+        self._serial_port = setup_serial_connect(port=comport, baudrate=baudrate, timeout=timeout)
 
     def open(self):
         if self._serial_port.is_open is False: