diff --git a/dwescape/Adafruit_PWM_Servo_Driver.py b/dwescape/Adafruit_PWM_Servo_Driver.py
index 35c993c..6d10385 100644
--- a/dwescape/Adafruit_PWM_Servo_Driver.py
+++ b/dwescape/Adafruit_PWM_Servo_Driver.py
@@ -50,7 +50,7 @@ class PWM :
     self.i2c.write8(self.__MODE2, self.__OUTDRV)
     self.i2c.write8(self.__MODE1, self.__ALLCALL)
     time.sleep(0.005)                                       # wait for oscillator
-    
+
     mode1 = self.i2c.readU8(self.__MODE1)
     mode1 = mode1 & ~self.__SLEEP                 # wake up (reset sleep)
     self.i2c.write8(self.__MODE1, mode1)
@@ -77,6 +77,17 @@ class PWM :
     time.sleep(0.005)
     self.i2c.write8(self.__MODE1, oldmode | 0x80)
 
+  def getPWMFreq(self):
+    if (self.debug):
+      print "Getting PWM frequency Hz"
+
+    prescale = self.i2c.readU8(self.__PRESCALE)
+
+    print "Got pre-scale: %d" % prescale
+    print 25000000.0 / 4096.0 / ( float(prescale) + 1 )
+    return 25000000.0 / 4096.0 / ( float(prescale) + 1 )
+    #24576000.f / 4096.f / (data + 1)
+
   def setPWM(self, channel, on, off):
     "Sets a single PWM channel"
     self.i2c.write8(self.__LED0_ON_L+4*channel, on & 0xFF)
diff --git a/dwescape/dwescapeHAT.py b/dwescape/dwescapeHAT.py
index 5542ef4..2f63f2e 100644
--- a/dwescape/dwescapeHAT.py
+++ b/dwescape/dwescapeHAT.py
@@ -64,15 +64,15 @@ class dw_PWM:
 
         def setPWM(self, value):
                 if(value > 0):
-                        self.MC._pwm.setPWM(self.pin, 0, value)
+                        self.MC._pwm.setPWM(self.pin, 0, int(value) )
                 if(value == 0):
                         self.off()
 
         def setPWMmS(self, length_ms):
-                self.setPWM( math.round( length_ms * 4096 ) / ( 1000 / self.freq ) )
+                self.setPWM( round( length_ms * 4096 ) / ( 1000 / self.freq ) )
 
         def setPWMuS(self, length_us):
-                self.setPWM( math.round( length_ms * 4096 ) / ( 1000000 / self.freq ) )
+                self.setPWM( round( length_us * 4096 ) / ( 1000000 / self.freq ) )
 
         def run(self, command, speed = 0):
                 if not self.MC: