stream.py for python3

[dlbraun]

I did a first pass at updating doc/scripts/stream.py for Python3. If one of the developers wants to check it over and add it to the distribution that would be great. It basically works. There is an issue where after uploading all the lines from the g-code file it sometimes enters an infinite loop of printing IDLE:....

stream.txt

[mitko125]

What is the possibility of getting your "stream.py"? I'm not experienced in python and I'm having trouble converting the original to python3.

[dlbraun]

Here it is. I haven't looked at it in a while. Best, David

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On Sat, Oct 5, 2024 at 2:41 PM Mitko125 ***@***.***> wrote: What is the possibility of getting your "stream.py"? I'm not experienced in python and I'm having trouble converting the original to python3. — Reply to this email directly, view it on GitHub <#1248 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABIA2GRIOYGLRYQEOI6WVN3Z2AXGNAVCNFSM6AAAAABPNSFLR6VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDGOJVGE2TGOBZGU> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[mitko125]

Thank you.
But I can't figure out how to download "stream.py" at all?

[dlbraun]

#!/usr/bin/env python """\ Stream g-code to grbl controller This script differs from the simple_stream.py script by tracking the number of characters in grbl's serial read buffer. This allows grbl to fetch the next line directly from the serial buffer and does not have to wait for a response from the computer. This effectively adds another buffer layer to prevent buffer starvation. CHANGELOG: - 20170531: Status report feedback at 1.0 second intervals. Configurable baudrate and report intervals. Bug fixes. - 20161212: Added push message feedback for simple streaming - 20140714: Updated baud rate to 115200. Added a settings write mode via simple streaming method. MIT-licensed. TODO: - Add realtime control commands during streaming.

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--------------------- The MIT License (MIT) Copyright (c) 2012-2017 Sungeun K. Jeon Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. --------------------- """ import serial import re import time import sys import argparse import threading RX_BUFFER_SIZE = 128 BAUD_RATE = 115200 ENABLE_STATUS_REPORTS = True REPORT_INTERVAL = 1.0 # seconds is_run = True # Controls query timer # Define command line argument interface parser = argparse.ArgumentParser(description='Stream g-code file to grbl. (pySerial and argparse libraries required)') parser.add_argument('gcode_file', type=argparse.FileType('r'), help='g-code filename to be streamed') parser.add_argument('device_file', help='serial device path') parser.add_argument('-q','--quiet',action='store_true', default=False, help='suppress output text') parser.add_argument('-s','--settings',action='store_true', default=False, help='settings write mode') parser.add_argument('-c','--check',action='store_true', default=False, help='stream in check mode') args = parser.parse_args() # Periodic timer to query for status reports # TODO: Need to track down why this doesn't restart consistently before a release. def send_status_query(): s.write('?') def periodic_timer() : while is_run: send_status_query() time.sleep(REPORT_INTERVAL) # Initialize s = serial.Serial(args.device_file,BAUD_RATE) f = args.gcode_file verbose = True if args.quiet : verbose = False settings_mode = False if args.settings : settings_mode = True check_mode = False if args.check : check_mode = True # Wake up grbl print "Initializing Grbl..." s.write("\r\n\r\n") # Wait for grbl to initialize and flush startup text in serial input time.sleep(2) s.flushInput() if check_mode : print "Enabling Grbl Check-Mode: SND: [$C]", s.write("$C\n") while 1: grbl_out = s.readline().strip() # Wait for grbl response with carriage return if grbl_out.find('error') >= 0 : print "REC:",grbl_out print " Failed to set Grbl check-mode. Aborting..." quit() elif grbl_out.find('ok') >= 0 : if verbose: print 'REC:',grbl_out break start_time = time.time(); # Start status report periodic timer if ENABLE_STATUS_REPORTS : timerThread = threading.Thread(target=periodic_timer) timerThread.daemon = True timerThread.start() # Stream g-code to grbl l_count = 0 error_count = 0 if settings_mode: # Send settings file via simple call-response streaming method. Settings must be streamed # in this manner since the EEPROM accessing cycles shut-off the serial interrupt. print "SETTINGS MODE: Streaming", args.gcode_file.name, " to ", args.device_file for line in f: l_count += 1 # Iterate line counter # l_block = re.sub('\s|\(.*?\)','',line).upper() # Strip comments/spaces/new line and capitalize l_block = line.strip() # Strip all EOL characters for consistency if verbose: print "SND>"+str(l_count)+": \"" + l_block + "\"" s.write(l_block + '\n') # Send g-code block to grbl while 1: grbl_out = s.readline().strip() # Wait for grbl response with carriage return if grbl_out.find('ok') >= 0 : if verbose: print " REC<"+str(l_count)+": \""+grbl_out+"\"" break elif grbl_out.find('error') >= 0 : if verbose: print " REC<"+str(l_count)+": \""+grbl_out+"\"" error_count += 1 break else: print " MSG: \""+grbl_out+"\"" else: # Send g-code program via a more agressive streaming protocol that forces characters into # Grbl's serial read buffer to ensure Grbl has immediate access to the next g-code command # rather than wait for the call-response serial protocol to finish. This is done by careful # counting of the number of characters sent by the streamer to Grbl and tracking Grbl's # responses, such that we never overflow Grbl's serial read buffer. g_count = 0 c_line = [] for line in f: l_count += 1 # Iterate line counter l_block = re.sub('\s|\(.*?\)','',line).upper() # Strip comments/spaces/new line and capitalize # l_block = line.strip() c_line.append(len(l_block)+1) # Track number of characters in grbl serial read buffer grbl_out = '' while sum(c_line) >= RX_BUFFER_SIZE-1 | s.inWaiting() : out_temp = s.readline().strip() # Wait for grbl response if out_temp.find('ok') < 0 and out_temp.find('error') < 0 : print " MSG: \""+out_temp+"\"" # Debug response else : if out_temp.find('error') >= 0 : error_count += 1 g_count += 1 # Iterate g-code counter if verbose: print " REC<"+str(g_count)+": \""+out_temp+"\"" del c_line[0] # Delete the block character count corresponding to the last 'ok' s.write(l_block + '\n') # Send g-code block to grbl if verbose: print "SND>"+str(l_count)+": \"" + l_block + "\"" # Wait until all responses have been received. while l_count > g_count : out_temp = s.readline().strip() # Wait for grbl response if out_temp.find('ok') < 0 and out_temp.find('error') < 0 : print " MSG: \""+out_temp+"\"" # Debug response else : if out_temp.find('error') >= 0 : error_count += 1 g_count += 1 # Iterate g-code counter del c_line[0] # Delete the block character count corresponding to the last 'ok' if verbose: print " REC<"+str(g_count)+": \""+out_temp + "\"" # Wait for user input after streaming is completed print "\nG-code streaming finished!" end_time = time.time(); is_run = False; print " Time elapsed: ",end_time-start_time,"\n" if check_mode : if error_count > 0 : print "CHECK FAILED:",error_count,"errors found! See output for details.\n" else : print "CHECK PASSED: No errors found in g-code program.\n" else : print "WARNING: Wait until Grbl completes buffered g-code blocks before exiting." raw_input(" Press <Enter> to exit and disable Grbl.") # Close file and serial port f.close() s.close()

On Sat, Oct 5, 2024 at 3:28 PM Mitko125 ***@***.***> wrote: Thank you. But I can't figure out how to download "stream.py" at all? — Reply to this email directly, view it on GitHub <#1248 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABIA2GVHDAPQMZCKOI5ANLDZ2A4UHAVCNFSM6AAAAABPNSFLR6VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDGOJVGE3DMMJXGA> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[mitko125]

Unfortunately, as you sent me the file, I cannot insert it directly into "VS Code". I started to redo it and noticed that expressions like:
print "Initia.....
are for python2 and not for python3 which wants:
print("Initia...

So I don't need it, but thank you for the effort.