Fix experiment_process.py parameter sending protocol.

dstat_interface/core/dstat/experiment_process.py

@@ -123,22 +123,22 @@ class BaseExperimentProcess(ABC):
                 logger.warning("Expected RQP %s got: %s", n_params, reply)
                 continue
 
-            tries = 5
-
             for i in params:
-                while True:
+                tries = 5
+                while tries:
                     self.serial.write(f"{i} ".encode('ascii'))
                     try:
                         reply = get_reply()
                         if reply == f"@RCVC {i}":
                             break
-                    except serial.SerialException:
-                        if tries <= 0:
+                        elif reply == "@RCVE":
                             continue
+                    except serial.SerialException:
                         tries -= 1
-                        pass
-                    else:
-                        break
+                        continue
+                else:
+                    logger.error('Communication failure')
+                    return False
             return True
         return False