quickhack: improved stability, had lockups befor this change - now the python module sends out a command that causes the loop to start again - including sending a new request

Author: ch-aurich

arduino/arduino.py

@@ -8,6 +8,7 @@ class Arduino(object):
 
     def __init__(self, port, baudrate=115200):
         self.serial = serial.Serial(port, baudrate)
+        self.serial.write('99')
 
     def __str__(self):
         return "Arduino is on port %s at %d baudrate" %(self.serial.port, self.serial.baudrate)

prototype.pde

@@ -34,6 +34,10 @@ void loop() {
         case 4 :
             //read analog value
             Serial.println(analogRead(readData()));
+        case 99:
+            //just dummy to cancel the current read, needed to prevent lock when the PC side
+            //dropped the "w" that we sent
+            break;
     }
 }