Modified the scripts to run on Raspberry Pi.

Script will check if it is run on a PI, in that case a different I2C serial library is used.

I2C_serial_pi.py

@@ -42,7 +42,7 @@ class I2C:
  #           sleep(0.2)
         except IOError, err:
             ret_ack = 0
-            ret_value = 0
+            ret_value = 'ffff'
             if DEBUG:
                 print("Reading error")
         return ret_ack, ret_value
@@ -50,17 +50,20 @@ class I2C:
     
     def read_last_reg(self, bytes_to_read):
         bus = smbus.SMBus(self.bus_nr)
-        ret_value=[]
-        for cnt in bytes_to_read:
+        rd_value = []
+        ret_value = ''
+        for cnt in range(bytes_to_read):
             try:
-                ret_value.append(bus.read_byte(self.I2C_Address))
+                rd_value.append(bus.read_byte(self.I2C_Address))
                 ret_ack = 1
  #               sleep(0.2)
             except IOError, err:
                 ret_ack = 0
-                ret_value = 0
+                rd_value.append(0)
                 if DEBUG:
                     print("Reading error")
+        for cnt in range(bytes_to_read):
+            ret_value += (hex(rd_value[cnt])[2:])
         return ret_ack,ret_value
   
     def write_bytes(self, register, data):