Added software reset

tests/query_device.py

@@ -8,7 +8,7 @@ f'''{argv[0]} ADDR [BAUDRATE] [{{read [REGISTER ...] | write VALUE REGISTER}}]
 where:
     - ADDR is Modbus address (use 0 for broadcast; note that only write can be broadcast)
     - BAUDRATE is (optional) baud rate; default value is 19200
-    - action can be "read", "write" or can be omitted (defaults to "read all")
+    - action can be "read", "write", "reset" or it can be omitted completely (defaults to "read all")
     - REGISTER can be either human-friendly register name (e.g. "CO2") or register number (30001)
     - read may have list of REGISTER arguments (combining both register numbers and names)
     - VALUE is 16-bit integer in decimal format
@@ -78,7 +78,7 @@ while arg_index < len(argv):
 # sanity check
 if not action:
     action = 'all'
-if action != 'read' and action != 'write' and action != 'all':
+if action != 'read' and action != 'write' and action != 'all' and action != 'reset':
     print(f'Unknown action {action}')
     exit(-4)
 if action == 'write' and value == None:
@@ -140,4 +140,11 @@ elif action == 'write':
     except ValueError:
         print(f'Register number {reg_number} cannot be written')
         exit(-9)
-exit(0)    
+elif action == 'reset':
+    if not s.reset():
+        # reset should throw NoResponse; if it doesn't, reset failed
+        print('Device reset failed!')
+    else:
+        print('---- Device reset ----')
+
+exit(0)