Added clocks and powersupply

TCD1304.py

@@ -0,0 +1,60 @@
+"""
+The Sensor shall be connected to the PSLab as Following:
+Pin 1 of the sensorboard: master_clock --> SQ1 on PSLab
+Pin 2: sh_clock --> SQ2
+Pin 3: icg_clock --> SQ3
+Pin 4: +5V --> PV1
+Pin 5: GND --> GND
+Pin 6: OS --> CH1
+"""
+
+import numpy as np
+import time
+import math
+from pslab.instrument.waveform_generator import PWMGenerator
+from pslab.instrument.oscilloscope import Oscilloscope
+from pslab.serial_handler import SerialHandler
+from pslab.instrument.logic_analyzer import LogicAnalyzer
+from pslab.instrument.power_supply import PowerSupply
+
+FREQUENCY_MASTER_CLOCK = 2e6
+INTEGRATION_ELEMENTS = 3694 
+INTEGRATION_TIME =  10e-6 
+OSCILLATOR_FREQUENCY = 128e6 
+MICROSECONDS = 1e6
+MIN_VOLTAGE_OUTPUT = 2.0
+MAX_VOLTAGE_OUTPUT = 4.0 
+SAMPLES_PER_ELEMENT = 2
+READ_OUT_TIME = INTEGRATION_TIME*INTEGRATION_ELEMENTS
+
+class TCD1304:
+    def __init__(
+        self,  ): 
+        self.pwmgen = PWMGenerator()
+        self.scope = Oscilloscope ()
+        self.ps = PowerSupply()
+
+    def set_power_source():
+        self.ps.pv1 = 4
+
+    def start_icg_clock(self):
+        self.pwmgen.set_state(sq3=True)
+        time.sleep(READ_OUT_TIME)
+        self.pwmgen.set_state(sq3=False)
+
+    def start_master_clock(self):       
+       prescaler = int(math.log(OSCILLATOR_FREQUENCY / FREQUENCY_MASTER_CLOCK) / math.log(2))  
+       self.pwmgen.map_reference_clock(["SQ1"], prescaler)    
+
+    def start_sh_clock(self):         
+        self.pwmgen.generate(["SQ2"], 1/INTEGRATION_TIME, [0.5] ) 
+
+    def read_signal(self):
+        self.scope.select_range('CH1', MAX_VOLTAGE_OUTPUT)   
+        self.scope.configure_trigger(channel = 'CH1', voltage = MIN_VOLTAGE_OUTPUT ) 
+        self.scope.capture(channels=1, samples=INTEGRATION_ELEMENTS*SAMPLES_PER_ELEMENT, timegap=INTEGRATION_TIME/SAMPLES_PER_ELEMENT, block=False)
+        self.icg_clock()
+        y, = self.scope.fetch_data() 
+        return y 
+
+