Styjun

If you have multiple situational racial save bonuses and are in a situation where they all apply do they stack?

How do you build a Dominant 7th chord?

Can I disable a battery powered device by reversing half of its batteries?

extract lines from bottom until regex match

Where does the expression "triple-A" comes from?

Is it appropriate for a professor to require students to sign a non-disclosure agreement before being taught?

Renewed US passport, did not receive expired US passport

Do any aircraft carry boats?

Is the union of a chain of elementary embeddings elementary?

Tracks in the snow

Why was "leaping into the river" a valid trial outcome to prove one's innocence?

What is the purpose of libraries like Pyomo and Google OR tools?

Contract Employer Keeps Asking for Small Things Without Pay

Is Salesforce Classic being deprecated?

How to work with a technician hired with a grant who argues everything

The case of the pranking snowplow

Gas pipes - why does gas burn "outwards?"

Kingdom Map and Travel Pace

Defining a function which returns a function pointer which also returns a function pointer without typedefs

Does a gnoll speak both Gnoll and Abyssal, or is Gnoll a dialect of Abyssal?

What's the biggest organic molecule that could have a smell?

I asked for a graduate student position from a professor. He replied "welcome". What does that mean?

Can I use ratchet straps to lift a dolly into a truck bed?

Converting multiple assignment statements to single comma separated assignment

Not able to retry the write operation from pyserial after timeout. It just retry on read operatiom

PySerial can read but not writePySerial write() instant timeoutDebugging pySerial write timeoutblocking read(1) with timeout in pyserialNot able to read anything from serial using pyserialread write communication pySerialpySerial can write, but not readRead and write to UART pyserial using timeout functionalityUnable to Read/Write using pyserial on Linux (Xubuntu 18.04)

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;

0

The timeout retry I implemented to read every time after 5 seconds but it's not doing what I expect. I just timeouts from the read operation in serial and line and keep waiting for the read. Actually, I want to exit completely and write once again and wait for the read.

Can someone tell me how to retry write and read three times and exit from the operation?

timeout = x: set timeout to x seconds (float allowed) returns
immediately when the requested number of bytes are available,
otherwise wait until the timeout expires and return all bytes that
were received until then.

My retry logic is not correct.

---

My output is: I want to retry write and read three times and exit from the operations but it just retry on read operation not on write.

python3 test.py 
rc:0
Writing b'Zxa5x01 =xffx01x00xa1xfe'
b''
b''
b''
b''

---

This is my implementation.

#!/usr/bin/env python3

import os
import sys
import glob
import serial
import time
import binascii

uart1 = '/dev/cu.usbserial-AK067XIB'
TEST_END=b'test_donen'

def serial_ops():
 retry_counter = 0
 try:
 device = serial.Serial(uart1, baudrate=115200, bytesize=8, parity='N', stopbits=1,
 timeout=5, xonxoff=False, rtscts=False, dsrdtr=False)

 #retry logic, exit after three attempts
 retry_counter += 1
 print('rc:%s' % retry_counter)
 if retry_counter == 3:
 print("I am exciting after three attempts no answer!")
 device.flsuh()
 device.close()
 sys.exit(1)

 except serial.SerialException as e:
 print("Not able to open port")

 except TypeError as e:
 device.flush()
 device.close()
 return None

 device.reset_output_buffer()

 packet = bytearray()
 packet = b'x5AxA5x01x20x3DxFFx01x00xA1xFE'
 device.write(packet)
 print("Writing %s" % packet)
 time.sleep(0.5)

 device.reset_input_buffer()
 run = True
 while run:
 data=device.readline()
 print(data)
 if (data == TEST_END):
 print("TEST DONE *****")
 run = False
 device.flush()
 device.close()

serial_ops()

python-3.x serial-port pyserial

share|improve this question

edited Mar 28 at 9:10

danglingpointer

asked Mar 28 at 8:58

danglingpointerdanglingpointer

3,04333 gold badges1414 silver badges3131 bronze badges

add a comment | 

0

The timeout retry I implemented to read every time after 5 seconds but it's not doing what I expect. I just timeouts from the read operation in serial and line and keep waiting for the read. Actually, I want to exit completely and write once again and wait for the read.

Can someone tell me how to retry write and read three times and exit from the operation?

timeout = x: set timeout to x seconds (float allowed) returns
immediately when the requested number of bytes are available,
otherwise wait until the timeout expires and return all bytes that
were received until then.

My retry logic is not correct.

---

My output is: I want to retry write and read three times and exit from the operations but it just retry on read operation not on write.

python3 test.py 
rc:0
Writing b'Zxa5x01 =xffx01x00xa1xfe'
b''
b''
b''
b''

---

This is my implementation.

#!/usr/bin/env python3

import os
import sys
import glob
import serial
import time
import binascii

uart1 = '/dev/cu.usbserial-AK067XIB'
TEST_END=b'test_donen'

def serial_ops():
 retry_counter = 0
 try:
 device = serial.Serial(uart1, baudrate=115200, bytesize=8, parity='N', stopbits=1,
 timeout=5, xonxoff=False, rtscts=False, dsrdtr=False)

 #retry logic, exit after three attempts
 retry_counter += 1
 print('rc:%s' % retry_counter)
 if retry_counter == 3:
 print("I am exciting after three attempts no answer!")
 device.flsuh()
 device.close()
 sys.exit(1)

 except serial.SerialException as e:
 print("Not able to open port")

 except TypeError as e:
 device.flush()
 device.close()
 return None

 device.reset_output_buffer()

 packet = bytearray()
 packet = b'x5AxA5x01x20x3DxFFx01x00xA1xFE'
 device.write(packet)
 print("Writing %s" % packet)
 time.sleep(0.5)

 device.reset_input_buffer()
 run = True
 while run:
 data=device.readline()
 print(data)
 if (data == TEST_END):
 print("TEST DONE *****")
 run = False
 device.flush()
 device.close()

serial_ops()

python-3.x serial-port pyserial

share|improve this question

edited Mar 28 at 9:10

danglingpointer

asked Mar 28 at 8:58

danglingpointerdanglingpointer

3,04333 gold badges1414 silver badges3131 bronze badges

add a comment | 

The timeout retry I implemented to read every time after 5 seconds but it's not doing what I expect. I just timeouts from the read operation in serial and line and keep waiting for the read. Actually, I want to exit completely and write once again and wait for the read.

Can someone tell me how to retry write and read three times and exit from the operation?

timeout = x: set timeout to x seconds (float allowed) returns
immediately when the requested number of bytes are available,
otherwise wait until the timeout expires and return all bytes that
were received until then.

My retry logic is not correct.

---

My output is: I want to retry write and read three times and exit from the operations but it just retry on read operation not on write.

python3 test.py 
rc:0
Writing b'Zxa5x01 =xffx01x00xa1xfe'
b''
b''
b''
b''

---

This is my implementation.

#!/usr/bin/env python3

import os
import sys
import glob
import serial
import time
import binascii

uart1 = '/dev/cu.usbserial-AK067XIB'
TEST_END=b'test_donen'

def serial_ops():
 retry_counter = 0
 try:
 device = serial.Serial(uart1, baudrate=115200, bytesize=8, parity='N', stopbits=1,
 timeout=5, xonxoff=False, rtscts=False, dsrdtr=False)

 #retry logic, exit after three attempts
 retry_counter += 1
 print('rc:%s' % retry_counter)
 if retry_counter == 3:
 print("I am exciting after three attempts no answer!")
 device.flsuh()
 device.close()
 sys.exit(1)

 except serial.SerialException as e:
 print("Not able to open port")

 except TypeError as e:
 device.flush()
 device.close()
 return None

 device.reset_output_buffer()

 packet = bytearray()
 packet = b'x5AxA5x01x20x3DxFFx01x00xA1xFE'
 device.write(packet)
 print("Writing %s" % packet)
 time.sleep(0.5)

 device.reset_input_buffer()
 run = True
 while run:
 data=device.readline()
 print(data)
 if (data == TEST_END):
 print("TEST DONE *****")
 run = False
 device.flush()
 device.close()

serial_ops()

python-3.x serial-port pyserial

share|improve this question

edited Mar 28 at 9:10

danglingpointer

asked Mar 28 at 8:58

danglingpointerdanglingpointer

3,04333 gold badges1414 silver badges3131 bronze badges

python3 test.py 
rc:0
Writing b'Zxa5x01 =xffx01x00xa1xfe'
b''
b''
b''
b''

#!/usr/bin/env python3

import os
import sys
import glob
import serial
import time
import binascii

uart1 = '/dev/cu.usbserial-AK067XIB'
TEST_END=b'test_donen'

def serial_ops():
 retry_counter = 0
 try:
 device = serial.Serial(uart1, baudrate=115200, bytesize=8, parity='N', stopbits=1,
 timeout=5, xonxoff=False, rtscts=False, dsrdtr=False)

 #retry logic, exit after three attempts
 retry_counter += 1
 print('rc:%s' % retry_counter)
 if retry_counter == 3:
 print("I am exciting after three attempts no answer!")
 device.flsuh()
 device.close()
 sys.exit(1)

 except serial.SerialException as e:
 print("Not able to open port")

 except TypeError as e:
 device.flush()
 device.close()
 return None

 device.reset_output_buffer()

 packet = bytearray()
 packet = b'x5AxA5x01x20x3DxFFx01x00xA1xFE'
 device.write(packet)
 print("Writing %s" % packet)
 time.sleep(0.5)

 device.reset_input_buffer()
 run = True
 while run:
 data=device.readline()
 print(data)
 if (data == TEST_END):
 print("TEST DONE *****")
 run = False
 device.flush()
 device.close()

serial_ops()

share|improve this question

edited Mar 28 at 9:10

danglingpointer

asked Mar 28 at 8:58

danglingpointerdanglingpointer

3,04333 gold badges1414 silver badges3131 bronze badges

share|improve this question

edited Mar 28 at 9:10

danglingpointer

asked Mar 28 at 8:58

danglingpointerdanglingpointer

3,04333 gold badges1414 silver badges3131 bronze badges

asked Mar 28 at 8:58

danglingpointerdanglingpointer

3,04333 gold badges1414 silver badges3131 bronze badges

asked Mar 28 at 8:58

danglingpointerdanglingpointer

3,04333 gold badges1414 silver badges3131 bronze badges