start draw

serialdraw/serialdraw.py

+#
+# serialdraw.py
+#
+# Neil Gershenfeld 7/13/21
+#
+# This work may be reproduced, modified, distributed,
+# performed, and displayed for any purpose, but must
+# acknowledge this project. Copyright is retained and
+# must be preserved. The work is provided as is; no
+# warranty is provided, and users accept all liability.
+#
+
+from tkinter import *
+import serial,signal,multiprocessing
+#
+# global variables
+#
+delay = 0.001
+maxcount = 5000
+forward = b'f'
+reverse = b'r'
+#
+# shared memory variable
+#
+count = multiprocessing.Value('i',0,lock=False)
+#
+def Jog0CW():
+   print('jog 0 cw')
+#
+def Jog0CCW():
+   print('jog 0 ccw')
+#
+def Jog1CW():
+   print('jog 1 cw')
+#
+def Jog1CCW():
+   print('jog 1 ccw')
+#
+#  check command line arguments
+#
+if (len(sys.argv) != 1):
+   print("command line: serialdraw.py")
+   sys.exit()
+#
+# open serial port
+#
+#ser = serial.Serial(port,115200)
+#ser.setDTR()
+#
+# set up GUI
+#
+root = Tk()
+root.title('serialdraw.py (q to exit)')
+root.bind('q','exit')
+root.configure(bg='white')
+pad = 2
+#
+row = 0
+Label(root,text='Steps/mm:',bg='white').grid(column=0,row=row,padx=pad)
+StepsPerMM= StringVar(root,'10')
+Entry(root,textvariable=StepsPerMM,width=15).grid(column=1,row=row,padx=pad,pady=pad)
+#
+row += 1
+Label(root,text='Jog steps:',bg='white').grid(column=0,row=row,padx=pad,pady=pad)
+JogSteps = StringVar(root,'100')
+Entry(root,textvariable=JogSteps,width=15).grid(column=1,row=row,padx=pad,pady=pad)
+#
+row += 1
+Label(root,text='Jog time: ',bg='white').grid(column=0,row=row,padx=pad,pady=pad)
+JogTime = StringVar(root,'0.01')
+Entry(root,textvariable=JogTime,width=15).grid(column=1,row=row,padx=pad,pady=pad)
+#
+row += 1
+Label(root,text='Motor',bg='white').grid(column=0,row=row,padx=pad,pady=pad)
+Label(root,text='Port',bg='white').grid(column=1,row=row,padx=pad,pady=pad)
+Label(root,text='Jog',bg='white').grid(column=2,row=row,columnspan=2,padx=pad,pady=pad)
+#
+row += 1
+Label(root,text='0',bg='white').grid(column=0,row=row,padx=pad,pady=pad)
+Port0 = StringVar(root,'/dev/ttyACM0')
+Entry(root,textvariable=Port0,width=15).grid(column=1,row=row,padx=pad,pady=pad)
+Button(root,text='CW',command=Jog0CW,bg='white').grid(column=2,row=row,padx=pad,pady=pad)
+Button(root,text='CCW',command=Jog0CCW,bg='white').grid(column=3,row=row,padx=pad,pady=pad)
+#
+row += 1
+Label(root,text='1',bg='white').grid(column=0,row=row,padx=pad,pady=pad)
+Port1 = StringVar(root,'/dev/ttyACM1')
+Entry(root,textvariable=Port1,width=15).grid(column=1,row=row,padx=pad,pady=pad)
+Button(root,text='CW',command=Jog1CW,bg='white').grid(column=2,row=row,padx=pad,pady=pad)
+Button(root,text='CCW',command=Jog1CCW,bg='white').grid(column=3,row=row,padx=pad,pady=pad)
+#
+# worker event handlers
+#
+def worker0(id,count):
+   localcount = 0
+   while (1):
+      0
+#
+# alarm event handler
+#
+def alarm(signum,stack):
+   count.value += 1
+   if (count.value == maxcount):
+      count.value = 0
+#
+# start workers
+#
+'''
+p0 = multiprocessing.Process(target=worker0,args=(0,count))
+p0.start()
+p1 = multiprocessing.Process(target=worker1,args=(1,count))
+p1.start()
+p2 = multiprocessing.Process(target=worker2,args=(2,count))
+p2.start()
+p3 = multiprocessing.Process(target=worker3,args=(3,count))
+p3.start()
+'''
+#
+# start alarm
+#
+signal.signal(signal.SIGALRM,alarm)
+signal.setitimer(signal.ITIMER_REAL,delay,delay)
+#
+# start mainloop and wait for alarms
+#
+root.mainloop()
+while (1):
+   0

serialstep/serialstep.1.py

@@ -21,6 +21,8 @@ port = serial.Serial(device,baudrate=baud,timeout=0)
 count = 0;
 maxcount = 5000;
 forward = b'f'
+reverse = b'f'
+forward = b'r'
 reverse = b'r'
 #
 # alarm handler