fix peak fifo (#95)

* fix peak fifo

* remove print

ldk/drivers/spectrum.py

@@ -26,9 +26,6 @@ def __init__(self, client, verbose=False):
         self.wfm_size = 4096
         self.max_current = 40  # mA
         self.sampling = Sampling(self.wfm_size, 125e6)
-
-        self.fifo_start_acquisition(1000)
-
         self.avg_on = True
 
         self.spectrum = np.zeros(self.wfm_size, dtype=np.float32)
@@ -39,8 +36,6 @@ def __init__(self, client, verbose=False):
 
         self.noise_floor = np.zeros(self.wfm_size, dtype=np.float32)
 
-        # self.set_offset(0, 0)
-
         self.set_address_range(0, 0)
 
         self.set_demod()
@@ -204,24 +199,9 @@ def set_averaging(self, avg_status): pass
     # === Peak data stream
 
     def get_peak_values(self):
-        @command(classname='Spectrum')
-        def store_peak_fifo_data(self):
-            return self.client.recv_uint32()
-
-        self.peak_stream_length = store_peak_fifo_data(self)
-
         @command(classname='Spectrum')
         def get_peak_fifo_data(self):
             return self.client.recv_vector(dtype='uint32')
+        data = get_peak_fifo_data(self)
+        return data
 
-        return get_peak_fifo_data(self)
-
-    @command()
-    def get_peak_fifo_length(self):
-        return self.client.recv_uint32()
-
-    @command()
-    def fifo_start_acquisition(self, acq_period): pass
-
-    @command()
-    def fifo_stop_acquisition(self): pass