develop version with initial source doc

Author: ECOM-Engineering

PySimpleGUI.py

@@ -0,0 +1,49 @@
+copy UPS2 files to Projects/UPS2
+
+Raspi zero for graphic desktop (if no desktop display):  
+sudo apt-get install lxde
+und ev. tkinter, falls ups2_GUI nicht funzt:
+sudo apt install python3-tk
+
+für parallel mode (--> pi zero). GPIOD library installieren:
+sudo apt install python3-libgpiod
+
+
+ADD IN CONFIG.TXT
+==================
+###ECOM UPS-2 for parallel mode
+#set GPIO20 as Input with pullup high
+gpio=20=ip,pu 
+
+
+###ECOM UPS-2 for serial mode
+enable UART in config.txt
+
+Edit /etc/rc.local 
+===================
+--> sudo chmod +x rc.local    //wird beim Start ausgeführt
+
+#serial mode
+python3 /home/pi/Projects/UPS2/ups2_serial.py & 
+
+#parallel mode
+python3 /home/pi/Projects/UPS-2/ups2_portHandler.py &
+
+Edit /etc/xdg/lxsession/LXDE-pi/autostart
+=========================================
+#serial mode
+python3 /home/pi/Projects/UPS2/ups2_serial.py & 
+
+#parallel mode
+python3 /home/pi/Projects/UPS-2/ups2_portHandler.py &
+
+#GUI, falls Autostart gewünscht
+python3 /home/pi/Projects/UPS-2/ups2_GUI.py
+
+
+HAT EEPROM
+===========
+Tools: 
+https://blog.gc2.at/post/hat-eeprom/
+https://www.raspberrypi.org/forums/viewtopic.php?t=108134
+

__pycache__/PySimpleGUI.cpython-37.pyc

@@ -0,0 +1,97 @@
+import gpiod
+import time
+import sys
+import os
+import argparse        
+''' shutdown control using simple switch and LED. '''
+
+def getArgs():
+    '''call script from file /etc/rc.local including path'''
+
+    ledDefault = 21
+    switchDefault = 20
+    powerDefault = ''
+ 
+ 
+    parser = argparse.ArgumentParser()
+                                        
+    parser.add_argument("-l","--ledPort", type=int, default=ledDefault, metavar='',
+                        help='Enter LED output bcm port default = ' + str(ledDefault))
+    parser.add_argument("-s", "--switchPort", type=int, default=switchDefault, metavar='',
+                        help='Enter switch control input bcm port default = ' + str(switchDefault))
+    parser.add_argument("-p", "--powerPort", type=int, metavar='',
+                        help='optional bcm port for ext. power timer')
+
+    args=parser.parse_args()
+    worker(args)
+#    return args
+
+def worker(ports):
+#    ports = getArgs()
+    print('LED: GPIO'+str(ports.ledPort),
+          'Switch: GPIO'+str(ports.switchPort),
+          'Power: GPIO'+str(ports.powerPort))
+
+    chip = gpiod.Chip("0")
+    inPort = chip.get_line(ports.switchPort)
+    inPort.request("UPS-2", type=gpiod.LINE_REQ_EV_BOTH_EDGES)
+
+    outPort = chip.get_line(ports.ledPort)
+    outPort.request("Py_Shutdown", type=gpiod.LINE_REQ_DIR_OUT)
+    outPort.set_value(1) #signal raspi is up
+
+    counter = 0
+    t_keyrelease = time.time()
+    while True:
+        try:
+            keyAction = "NO_KEY"
+            #wait for key pressed
+            event = inPort.event_read() #falling edge: key pressed
+            print(event)
+            print("type", event.type)
+            print('timestamp: {}.{}'.format(event.sec, event.nsec))
+            if (event.type == 1):
+                print("first event should be falling --> ignore")
+                continue #retry wait for falling edge
+            counter = 1
+            t_keypress = event.sec + (event.nsec * 10e-10)
+            pauseTime = t_keypress - t_keyrelease 
+            
+            #wait for key released
+            event = inPort.event_read() #rising edge: key released
+            print("type", event.type)
+            print('timestamp: {}.{}'.format(event.sec, event.nsec))
+    #        startTime = time.process_time() 
+            t_keyrelease = event.sec + (event.nsec * 10e-10)
+            pulseTime = t_keyrelease - t_keypress
+    #        print("calc time: ", time.process_time() - startTime)
+
+            counter = counter + 1
+            print("counter =", counter,
+            "  pulse time= ", pulseTime, "s"
+            "  pause time = ", pauseTime)
+
+            #analyze command
+            if pulseTime < 0.5:
+                if pauseTime < 0.5: #this is a double click
+                    keyAction = "DOUBLE_PRESS"
+                    os.system("sudo shutdown -r now")
+                else:
+                    keyAction = "SHORT_PRESS"
+            elif pulseTime > 5:
+                keyAction = "SUPER_LONG_PRESS"
+                os.system("sudo shutdown -h now")
+     
+            elif pulseTime > 2:
+                keyAction = "LONG_PRESS"
+                os.system("sudo shutdown -h now")
+
+            print("keyAction =", keyAction)             
+                    
+        except KeyboardInterrupt:
+            chip.close()
+            break
+    print("ciao")
+
+if __name__ == "__main__":
+    getArgs()

__pycache__/ups2_Interface.cpython-37.pyc

@@ -184,7 +184,7 @@ def ecFormatDisplay(sysStatus, window):
     if event in (None, 'Quit'):
         break
     if event == 'Power OFF':
-        if ecPopWin(5, 'Pwr OFF') != 'cancel':
+        if ecPopWin(5, 'POWER OFF') != 'cancel':
             ups.ecReqUPSPowerDown(ser)
             os.system('sudo shutdown -P now\n')
     elif event == 'Restart':

installation.txt

@@ -7,7 +7,7 @@
 import fcntl
 
 def ecInitSerial(device = '/dev/serial0'):
-    '''Opens serial device and returns a handle to to the device'''
+    '''Opens serial device and returns a handle'''
 
 
     ser = serial.Serial(
@@ -47,7 +47,7 @@ def ecFormatAnalog(analogStr):
     return l                 
 
 def ecGetUPSValues(ser):
-    '''Requests values from UPS-2 by serial interface service ups2_serial.py.'''
+    '''Requests values from UPS-2'''
     try:
         request = "r?status\n"
         fcntl.flock(ser, fcntl.LOCK_EX)

s_shut.py

@@ -61,13 +61,7 @@
 
         print("keyAction =", keyAction)             
 
-            
-                
     except KeyboardInterrupt:
         chip.close()
         break
 print("ciao")
-        
-        
-    
-

ups2_GUI.py

@@ -1,4 +1,6 @@
 """
+This is the interface to the UPS-2 power supply
+
 Place a call to this service in /etc/rc.local:
 python3 /path/to/ups2_serial.py &
 """
@@ -26,7 +28,7 @@ def ecReadline(ser):
 
 
 def ecExecSerCommand(rxLine):
-    """Check if command comes from UPS and execute."""
+    """Check if commands come from UPS and execute."""
     command = "--"
      #linux system commands from UPS
     if rxLine[0:2] == "u!":  #prefix